IBM 3742, 3740, 3741 Reference Manual

GA21-9151-0

Systems

IBM IBM IBM

3740

3741

3742

Reference

Data

Entry

Station

Dual Data

Manual

System

Station

Preface

(

This publication cations personnel wish specific information and

the

IBM

Information

3742

unless specified otherwise. Chapter 1 presents a general overview 3742,

listing Chapter Chapter data Chapter ters 5

2 presents 3 deals with

flow, modes

4 defines

through and features, them.

Appendix

causes,

and

is

a reference manual for

and

key

entry

supervisory personnel

about

the

IBM

3742

Dual Data

in this manual pertains

of

the

3740

the

standard

information

operating

of

operation,

the

12

~eal

and

programming information required

A gives a list

system and functions

display

with

specific details

Station.

to

both

the

and features available.

about

the

characteristics in

disk unit, and buffers.

unit

and

the

of

possible

possible recoveries.

customer

3741 Data

3741

IBM

keyboard. Chap-

about

error

the

3741

and

Diskette.

terms

codes,

appli-

who

Station

and

the

of

functions

by

their

First Edition (January 1973)

Changes are continually made

in subsequent revisions

A Reader's Comment Form your comments

Minnesota

to

55901.

IBM

to

the

specifications herein; any such changes will

or

Technical Newsletters.

is

at

the

back

Corporation, Publications, Department

of

this publication. If

1973

the

245,

form

is

gone, address

Rochester,

be

reported

Contents

CHAPTER System Overview

CHAPTER Disk

CHAPTER

INFORMATION

Buffers Modes

Starting Record Advance Operation Deleted

CE

CHAPTER Display Keyboard

CHAPTER Program Coding • Loading a Program Selecting a Program • Displaying a Program Modifying Program Chaining Operator Guidance .

CHAPTER Counters .

Displaying Production Statistics

CHAPTER Online Field Totals .

1.

IBM

3740

DATA

IBM

3741 Data

Station Overview

Layout

Index

Track

I ndex

Track

of

Operation Enter Mode (E) Update Mode (U) Verify

Mode Field Correct Mode (C) Search Mode Read Index Mode Modify Field Totals Mode (F)

Information

Records. Mode Considerations Mode.

Switches Function Character Keys Function

a Program

Keystroke Counter .

Record Counter . Verify

Correction Keystroke Counter

Displaying Field Read Out/Reset Fields . Online Field Example.

Station

2. I BM

DISKETTE

.

Layout

Data Set Labels

3.

DATA

STATION

(V)

(S)

Mode (M)

4.

Select Keys

Keys

5.

6.

7.

(X)

OPERATOR

PROGRAMMING

PRODUCTION

FIELD

TOTALS

Totals.

Total

Restrictions

for

and

Deleted Records

INTERFACE

ENTRY

IBM

OPERATING

STATISTICS

SYSTEM.

3742

INFORMATION

Dual Data

Offline

Field

Totals.

Offline

Selecting

3

6 6 7 8

10 10 Copy 10 10 11 11 13 13 16 16 16

17

17 Computing the Self-Check 18 18 18

19 19 20 20 20 21 21

26 26 26 26 28

28 28

29

30 30 30

30

30 BSCA Error Conditions and Indications 30

31

31 31

31

Mask Statements Displaying Writing Field Totals Example.

CHAPTER 8. SECOND Dual Disk Dual Disk Operation Search Operations on the Second Disk Copy .

CHAPTER 9. I

nitialization

Disk Checking

CHAPTER 10.

CHAPTER 11.

Programming

Features

Operating Procedures

Communication

Communications Example .

Line

Preparation on

All

Copy

All

Copy

Up

Handling Disk Errors

All

or

Part

Modulus

Teleprocessing Bibliography

Networks Communications Communications 3741 Transmission Modes .

Synchronous Clock Feature Terminal Operator

Keylock Feature

Transmit Transmit-Transparent Mode Receive Mode (R) Transmit/Receive Mode (B) Transmit-Transparent/Receive Mode (D)

Termination

BSCA Disk Errors Track

and Sector Indicators

Status

Message

Field Totals

Offline

Field

Total

into

DISK

on

the 3741 and 3742 . 37

or

Part

of or to

DISK

Procedure

10 42 11

Support

Identification Identification

Mode

Disk 2 .

Part

of

a Data Set

a Specified Record on Disk 2

of

SELF-CHECK

COMMUNIGATIONS

of

that

Disk 2

INITIALIZATION

Facilities. Throughput

Modes.

(T)

and Error Conditions

Data Call

Format

Accumulators

Record

on

Disks

3742

Occur While Copying

FEATURE

Digit

Feature

Card Reader Feature

(P)

•

32

33 33 33

34 34 34

37 37

38 38 38 38

39

40 41 41

42 42

43

44

44 45 45 46 46

49 49 49 50 50 51 51 51 51 56 56 57 57 57 58

58

59 60 61 61

CHAPTER 12. Uses

•

Hardware.

Adjustable Margins Feature Forms Stand Feature

Functions

Printer Modes Printer Formatting

IBM

3713

PRINTER

62 62 62 62 62 62 62 63

APPENDIX Disk

Initialization

INDEX

A. ERROR

Errors

AND

ALERT

CODES.

71

79

81

ii

iii

Chapter 1. IBM 3740 Data

Entry

System

SYSTEM

The that

3740 ized, and are

The

are keyed

OVERVI

IBM

3740

Data

satisfies a variety

system

entered

is

remote

much

equally

key

like

characters are

and

written

EW

Entry

of

adaptable

entry

they

entered

on

System

key

is

a family

entry

requirements.

to

centralized, decentral-

environments. Original records

are

on a standard

in

temporary

the

disk

after

has been keyed.

A key

element medium, means

of

card.

One

of

one

box

be used over

the

disk can be easily

ting

the

of

the

the I BM

storing

data

disk holds

of

80-column cards.

and

over,

rekeying

of

3740

diskette.

and replaces

1898

and

corrected

entire

system

is

This disk

the

records, roughly

Furthermore,

data

that

has been

and

updated,

records

and

cards.

The

3740

system devices are:

•

IBM

3742

Dual Data

Station:

Designed for

use in a centralized transcription location.

•

IBM data or

remote

tion

3741 Data entry

area.

Station

Models 1

use as a stand-alone

location as well as

and

station

in

a centralized transcrip-

of

products

The

keypunch.

storage as

the

they

complete

record

a magnetic recording

is

an economical

standard

the

punched

the

equivalent

the

disk can

entered

thus

elimina-

scrapping

data

2: Designed

on

of

entry

for

in a decentralized

Thus, as shown in Figure 1, integrated data ments for data

In

a centralized lation includes a for recording

entry

transcription

number

data

on verter would be included inch, 9-track

tape

for processing

the

IBM

3740

is

actually

system answering

today's

in various operating environments.

environment, a typical instal-

of

IBM

3742

Dual Data

diskettes. An

to

convert

by

IBM the

the

3747

data

host

to

central pro-

cessing unit.

In

a decentralized transcription environment, several 3741 Data site. bution part manufacturing entered by a other

In

a remote one locations, or, if Data Stations. Perhaps parts are house The disk as transactions occurred. Periodically be

transmitted Station

Stations

For

instance,

department

movement

control

departments

environment,

or

more

IBM

to

several divisions

inventory

Model 2

would

one

station

and

used by

information.

departments

person. A

or

to

a location having a converter.

3741 Data

the

work

data

would

to

the

warehouse via an

with

binary

be located

throughout

might be

the

inventory

Other

stations

where requests for

diskette

a typical

load

situation

Stations

is

heavy,

at

distributed

of a company

be

entered

via

IBM

synchronous

in

the

might

would

various offsite

IBM

3742 from

located miles

the

data

the

3741 Data

communications.

require-

Stations

Data

one-half

a business

parts

clerk

be in parts be

sent

Dual

a ware-

station

data

an

Con-

IBM

distri-

to

enter

are

to

include

apart.

on

would

•

IBM

3747

Data Converter: Designed entered netic vert the

•

IBM provide hard

on

magnetic disk by

tape

for use

data

from

3740

system.

3713

Printer: Designed

by

magnetic

copy

output.

the

other

9-track systems

tape

data

to

disk for updating

to

attach

to

convert

stations

and

to

the

data

to

mag-

to

3741

conby

to

IBM

3740

Data

Entry

System

Central ized

Location

IBM 3742 Dual Data Station

IBM

System/360

IBM System/370

CPU

or other

9-

Track Systems

\

IBM 3747 Data Converter

Receiving Device

\

IBM 3742 Dual Data

Station

IBM 3742 Duai

Station

Data

IBM

3742 Dual

Data

Station

IBM 3742 Dual ' I Data Station I

-------

-

____

Decentral ized

-

--p

I',t

I

,~

/

,'I

"I

1'1

I

'I

I

'I

, I

I I

, I

I

..

1

Remote Location (offsite)

IBM 3741 Data

Station Model 2

Remote Location (offsite)

IBM 3741 Station Model 1

Figure

1.

2

An

Integrated

Data

Entry

System

IBM 3741 Data

Station Model 2

Legend:

Hand Transported - - - -

IBM

3741

Overview

The

IBM

alone

device

board

unit, control binary

synchronous

Data Station

3741 Data

with

one display

unit.

In

and

IBM

Station

one

operator

unit,

addition,

the

communications

3742

Dual Data Station

Model 1 (Figure 2)

station,

one

Model 2

or

which

two

disk

is

equipped

adapter.

is

has

units,

a standone key-

and a

with

a

The

IBM

3742

Dual Data

device

with

two

operator board and and one shared display

For each mation priate index reference

a listing

of

the

about

disk

unit. The

of

standard

data stations,

these

functions

Station stations, each 3742

unit

.

functions

see

s.

(Figure 3)

with its

has

only

one

and features available

Figure 4.

and features,

For

detailed

see

is

a stand-alone

own

key

control

the

unit

infor-

appro-

-

on

Control

Unit

Display

Unit

\

Keyboard

Unit

Disk

Unit

s

Figure 2.

IBM

3741 Data

Station

IBM

3740

J

Data

Entry

System 3

Standard

Function

or

Feature

IBM

3741 Data

Models 1

and

Station,

2

IBM

3742

Dual Data

Station

Entering

Search

and

updating records

on

record address

on

sequential

on

content

on

end

of

Program chaining

Operator

Levels (per

guidance

of

program

operator

station)

Record length

Verify

Production

Self-checking (modulus

statistics

number

10

and 11)

content

data

control

Standard

Ten standard

Standard 1 to

Feature

128

characters

Standard

Feature

Standard

Not available

Six

standard;

four

available with a

Standard

Feature 1

80

characters

to

128

Standard

Feature

additional

feature

characters

Offline field

Onl ine field totals

Disk

copy

Disk initialization

Second

Printer

Binary

communications:

Keylock

Terminal identification

Synchronous

Operator

totals

disk

attachment

synchronous

clock

identification

Feature

Standard and

not

Feature

card reader

Figure 4. Standard Functions and Available Features

on

the

3741 Model 2

available

on

Model 2

on Model 2

Modell

Feature

Not available

Feature

Not available

Not

available

Not available

IBM

3740

Data Entry

System

5

Chapter 2.

The

IBM tained within a protective cartridge Data

is

way

data

IBM

Diskette

diskette (Figure 5)

recorded and read serially on

is

processed on magnetic tape. Records can be

is

a flexible Mylar* disk con-

about

8.0 inches square.

the

disk

in

the

same

accessed directly as with system-attached magnetic disk

The

drives. one-half inch magnetic city and functional characteristics. batch of

the added advantage fits easily into

diskette falls between the punched card and

tape

in

terms

of

data storage capa-

It combines

data

storage properties

features

of

one-half inch magnetic

of

the

direct access.

procedures

of

punched cards with many

tape

In

addition,

of

most punched card instal-

the

and

the

small

has diskette

lations, replacing cards with minimum changes required.

When compared

to

the

punched card,

the

disk has

the

lowing advantages.

the

fol-

• Reusability

• Ease

• Very favorable ratio One small disk can usually hold from

to

reduce media cost.

of

erasure and error correction.

of

size and weight

the

typical key

entry

station.

the

to

entire

• Improved data readout speeds. This speed

the

geous when either verter

is

attached

3741 Model 2 or

to

a data processing system

munications.

•

The

ability

to

easily back

in

case

of

mission

communication errors.

• Portability and mailability

• Machine-assisted direct access

DISK LAYOUT

The disk The physical disk circles similar ided

unit

reads and writes

layout

of

is

divided into an index track and

to

the

grooves on a record. The.track

into

26

sectors. Thus, any by an address consisting number. Twenty-six records can be

written

1898

data

*Trademark

6

on

records.

of

E I

duPont

each track.

up

and reread data for retrans-

of

useful quantities

to

offline batch data files.

on

only

one

the

disk

is

shown

in

73

data tracks

data

record can be located

of

a track number and a sector

of

up

to

128

characters each

The

capacity

de Nemours & Co., Inc.

data stored.

day's

output

is

advanta-

3747

data convia

com-

of

data.

side

of

the

disk.

Figure 6. Each

or

is

div-

of

the

disk

is

Figure 5. 18M- Diskette

Figure 6. Physical Disk

1 Data Record

Address: Track

Sector

07

Layout

03

Sector

07

Each

of

the

26

sectors has a sector identification field and a data field. A field designated for a specific use. tains

the

track tion fields are prerecorded for initialization process and are ing normal disk use. sical record. record length, cal record length

128 characters. On

is

length record

always

of 1 to

Sector Contents After Writing

is

a predefined number

The

number

The

is

128

and sector number.

the

not

The

data

field has space for

maximum record length, called physical

always

128

characters. However,

on

the

3741 can be anywhere from 1

the

standard

80

characters; a variable length logical

characters

is

of

data

positions

identification field con-

The

identifica-

entire disk during an

rewritten

3742,

available

or

changed dur-

the

logical record

as

a feature.

one

the

phy-

logi-

to

Index Track

The

first track bered 00, contains a maximum data set information. can be used for

Each record

of

80 acters. first seven sectors information or information location remaining sectors (08-26) may contain data which are used

Layout

on

a disk, called

All

data

records.

~n

the

index

characters and a physical record length

The

index

track

format

of

the

of

tracks

that

have developed errors in use.

to

define

the

index

track

of

26

records for system

remaining tracks (01

track

has a logical record length

is

shown

in

index track may

about

the

data

sets resident

contain

the

diskette, such as

and num-

through

of

128

Figure 7.

system

set

labels,

on

the

or

73)

char-

The

the

The

disk.

Sector 1

Sector 2

Sector 3 Position 1: machine

Sector 4

Sector 5 Positions 1-5: ERMAP; positions 6-80: blanks

Sector 6

Sector 7 Volume label: positions

80

blanks

80

blanks

test

character for a write

80

blanks

If 1 or 2 bad tracks were specified, positions 7 and 8 indicate the first bad track and position 9 contains a

0; positions

80

blanks

123456789101112

11

and 12 indicate

the

second bad track and position

______________

test

13

contains a

7677787980

O.

VOL11~D

Volume

Sectors 8-26

Figure 7. Index Track Layout

Data set labels

I D 12 through

Accessibil ity Any nonblank character means disk accessible

1

tJ~_tJ

contain blanks

is

not

76

'\

tJ

Sector sequence

information

w

IBM

Diskette 7

Index

Track

Data

Set

Labels

Sectors 8

as mation extent and the

Position

through

data

set labels. A about a data

(BOE), end

the

record length

data

set label, see Figure

by

Position Representation

26

of

the

data

set label defines

set

on

of

data for

the

index

track

are used primarily

pertinent

the

disk such as beginning

(EOD),

data

end

set.

of

For

extent

8.

of

Data

exact

on

Field Name Position Purpose

Header 1 1-4

Label identifier for system appl ication;

5 Reserved

Data set name

6-13

User name

14-22 Reserved

Record length 23-27

Logical record length *

infor-

of

(EOE),

layout

of

the

Index Track in

for

data

set

Any

One

Sector

of Sectors 8-26.

must

be H D R 1. *

Beginning extent

End

of

(BOE)

extent

(EOE)

Bypass

data

Accessibility

Write

protect

set

28

Reserved

29-33 Identifies

contain contain

34

35-39

40

41

Reserved

Identifies

Reserved

The

IBM

If a B

is

processed. This coding allows

same disk.

42

43

This field

If this field be a blank,

the

address

the

track

the

sector

the

address

3747

data

present,

must

contains a P, in

which case

number,

number.*

converter

the

data

contain

of

the

first sector of

position

of

the

last sector reserved for

requires

set

is

ignored. If a blank

the

user

a blank in

the

both

order

disk can be read only. Otherwise this field

reading

the

31

must

that

to

store

for processing

and

writing are

data

set. Positions

be 0, positions

th

is

this field

contain

is

present,

programs and

to

permitted.

data

32

take

and

set. *

a B

the data

place.

29

33

or

a blank.

data

on

and

set

the

30

is

must

* Indicates an

Figure 8 (Part 1 of 2). Data

8

entry

required' by

Set

Label Layout

the

3740

system.

Position

by

Position

Representation

of

Data

on

the I ndex

Track in

Any

One

Sector

of

Sectors

8-26.

Field Name

Multivolume indicator

Verify

mark

End

of

data

**When preparing

for

the

interpretation

Figure 8 (Part 2

of

data

2). Data

Position

44

45

46-72

73

74

75-79

80

for

conversion

of

the

Set

Label

Purpose

diskette;

This field verified.

by

the

multivolume

Layout

Reserved

A blank in

indicates

Reserved

Identifies

Reserved

3747,

byte.

this

field indicates a

a C indicates a

the

last

diskette

must

contain

the

address

check

the

of

IBM

data

set

is

not

data

a V

the

on

or

a blank.

is

continued

V indicates

unused sector.

continued

on

another

data

set

the

on

or

diskette;

resides. * *

data

set

from

has

another

an

L

been

3747 Data Converter Reference Manual,GA21-9153,

IBM

Diskette 9

Chapter 3. Data Station Operating Information

The

entering, updating, verifying

is

performed operation. control upon store

and

communication

Each

mode buffers, keys, and each

mode.

The

mode

the

status operation display codes are:

by

the

data

stations

The

sequence

unit

within

the

mode

in which

transfer

of line for

Mode

Enter Update Verify V Field

Search S

Read index X Modify M

Field

data

between

of

operation

of

the

3741

correct

totals

(offline)

of

the

data

the

within

the

is

the

information

is

display unit. Some

and

or

finding

using

operations

station

unique,

indicated by a

3742

is

station

is

the

station

keyboard,

and,

displayed

and

Display

directly depende.nt

functioning. Buffers

their

of

data

different

performed

to

allow

disk,

and

therefore,

is

different

code

displayed

of

the

modes

corresponding

Code

E U

C

F

on

modes

by

display.

the

a disk

of

the

use

for

on

<?f

of

MODES

Enter

can

results if on on lower and

As current a record advance occurs, ferred record

previous record

The

mode current set

keyed

OF

Mode (E)

is

the

be selected

enter

the

disk.

the

disk.

then

the

operator

record

to

the

is

being

data

flow

is

selected,

record

to

blanks.

into

the

OPERATION

most

basic

from

the

mode

is

Enter

mode

To

select

the

press ENTER.

keys a record,

buffer

until

previous record buffer. While

keyed

into

is

written

is

summarized

the

disk

buffer

and

The

station

current

mode

of

operation.

index

track

selected when

is

used

to

write

enter

mode,

the

data

the

record

the

completed

the

current

on

the

disk.

in Figure 9. When

is

positioned

the

previous record

is

then

ready

record

buffer.

Enter

only;

an M

error

in

any

other

new

information

press FUNCT

is

stored

is

completed. record

is

the

enter

at

BOE;

the

buffer

to

accept

mode

position

SEL

in

the

When

trans·

the

are

data

BUFFERS

to

buffers

hold

record

buffer.

also be

is

communicate

are

buffer,

buffer

information

buffer

dupl

used

Buffers are used and disk. record buffer,

The keyed update from

The completed buffer record buffer.

The

processed when verifying

search operations.

10

The

current

or

receives records

mode. Data

the

current

previous record

record. Data

and

can

hold

buffer

with

the

and several

stores

that

normally

is

written

icated

to

store

data

current

record buffer, previous

format

data

characters as

are read from disk during

displayed

contains

on

the

and

placed in

the

to

store a mask used

keyboard,

buffers.

on

the

disk

from

the

record

to

display,

they

screen

last

this

current

be

are

is

during

As

data

is

keyed,

stored

in

the

record

buffer displayed screen.

At the the

buffer record

with blanks.

same time next being keyed, record

record

written

Figure

on

record advance,

data

is

previous record

and

buffer

data

record

in

the

buffer

on

9.

Data

current

and

the

moved

the

current

is

At

that

the

disk.

Flow

it

to

filled

the

is

for

is

~

Keyboard

Disk .....

Enter

Mode

0,--1

_____

__

•

o

-'I

OJ

Update

Use review

FUNCT

Data flow selected update tioned the the error. However, update enter to error data other

Record disk record displayed. changes are into buffer.

Mode (U)

the

update

or

modification.

SEL

lower and

is

summarized in Figure 10.

from

is

selected

at

BOE; if

record

at

the

update

mode

mode.

The

mode

occurs

if

address equals

words,

when

is

read

into

current

buffer

Any

keyed

current

record

the

when

and

mode

to

read records To

select

then

press UPDATE.

read index, search, from

the

index

update

current

from

the

search

at

update

is

selected

disk address

the

enter

mode

automatically

record backspacing occurs during

mode

the

end

of

mode

is

the

beginning-of-extent address;

the

data

set

the

track,

from

mode

also

automatically

a search

selected

is

empty.

011.-

from

update

Update

or

verify

the

is

reread. Selecting

results in an M

changes

operation.

when

------'I

o

from

...........

~

---

Disk

the

disk

mode,

mode

mode.

disk

is

the

verify mode,

the

•

for

press

can be

If

posi-

to

the

changes

A Y

end-of-

in-

If record advance reaches EOD during mode

of

operation However, an data

set

is

protected

error

is

G displayed) .

Verify Mode (V)

Use already when similar

is

automatica'ily

in

do

To

then index

verify

mode,

with

current

displayed)

the

verify on

the

errors are

to

that

rekeyed

the

not

select

from

record in

compare,

the

press VERI FY. Select

or

update

mode

the

previous record

blanks,

record

automatically

auto

return

to

by a write or

if

the

mode

to

check

disk and

found.

of

the

compared

the

verify mode, press FUNCT

mode.

is

selected

and

buffer.

to The

entering

source

with

current

a V

error

For

from

the

first non-deleted record

changes

index

track

protect

data

set

the

accuracy

make

corrections

process

data.

As

document,

the

corresponding

record

buffer.

occurs.

the

verify

data

flow, see Figure 11. When

read index

buffer

is

DL-I

Next record

from

hold buffer.

disk

is

into

read the

......

'-----

update

is

of

the

automatically

to

enter

is

performed

byte

in

full (an E

of

to

verifying

data

for

each

character

If

SEL

mode

from

mode

__

mode,

the

data

the

lower

or

is

read

----oJ

•

o

the

mode.

if

the

label (a

error

is

records

data

is

a record

is

character

characters

and

read

update

filled

into

the

Record advance

transfers

previous record and into

buffer. changed, written

Figure

data

reads

current

If

it

to

10.

data

is

disk.

Data

to

buffer

record

was

Flow

for Update Mode

nm~

~~

Keyboard

Disk

The

record

is transferred advance record buffer

to

at

the

record

and

current~

diSPlayel

Keyed data pared with

~:;:~~

transfers

previous record buffer.

Data

only changed.

Figure

is

com-

the

data

in

:~~~~c:uffer.

data

to

written if

data

11.

to

disk Keyboard

was

Data Flow

~~

for

Verify Mode

Data

Station

__

lIM

i

f~~'"

_ ___ 1

__

_

Operating

Information

11

Error Correction

If a

character corresponding following

1.

The

2. A V

keyed

character

occur:

keyboard

error

while verifying

in

locks.

code

is

displayed

the

is

current

on

not

record

the

status

same as buffer,

line.

the

Display

During verification,

not

including record current tion,

or

ing

the

is

displayed (1)

record buffer, (2)

(3) when an

RESET key returns

the

data

cursor

position. However,

after

the

after

error

occurs.

the

record

is

displayed

record

is

a record backspace opera-

The

keystroke

normal verify display mode.

the

moved

up

to

entire

into

follow-

but

the

3.

The

cursor

stops

under

the

4.

The

entire

record

is

displayed.

Use

RESET

the

character

The

first

the

character

current

If

the accepted, process the

record.

character

record

first

character

a verify

is

continued

to

reset

in

keyed

buffer

the

error

condition

error.

key

following

agrees with

or

the

character

key pressed following

error

is

again displayed.

until all

corrections

Record Advance

When a record advance the

record

is

rewritten

were

no

corrections record advance. has

taken

place

and

tion

of

the

record, pressing R

advance

record. Pressing REC ADV when

than

ing manual fields

dup

function

the

first manual position

fields are verified

is

performed

on

the

disk as

to

the

record, it

If

no

verification

the

cursor

EC

to

occur

without

of

to

be verified as blanks; remaining

and

bypass fields are bypassed.

Skip Functions

If

SKIP

is teredduring of

the

field

is

encountered,

action

terminates,

ing RESET, a blank check

by

the

pressed

rest

or a programmed

verification,

is

checked

the

pressing SKIP.

of

for

the

cursor

and

a V

nonblank

the

field

the

entire

blanks. If a

stops in

error

character

The

for

blanks.

position in error.

and

then

correct

the

error

is

accepted

either

the

character

that

caused

the

error

The

correction

have been made

on a corrected

corrected.

is

not

rewritten

or

correction

is

in

the

first manual posi-

ADV causes a record

verification

the

cursor

a record causes all remain-

skip field

field

or

the

nonblank

that

position,

is

displayed.

can be replaced with

station

then

continued

If

to

of

is

in

other

is

encoun-

remainder

character

the

After

record,

there

a record

the

if

in

the

error.

is

not

during

auto

skip

press-

to

Verification Code

After

the

last record verification field to

a read index

alert

code

of

the

data

is

displayed, and program level 0

(V)

set

label,

mode,

in a data

Duplication Functions

Pressing DUP during verified current characters acters in acter

in

After

RESET

record

by

pressing DUP.

field.

When using in

the

ters

in

or

entering a

data

verification causes automatically. record

buffer

in

the

previous record buffer. If

the

record disagrees with

the

previous record buffer, a verify

is

pressed,

buffer

can be inserted

The

the

auxiliary

record are

the

compared

program

buffer

Right-Adjust Fields

If a right-adjust field

the

cursor

first

data depending first

data character error

occu rs.

To

exit

from

character

(-)

key.

RIGHT sign, unless verify a

adjust

verified in in

the

numeric

field

field.

stays in

key

on character in

in

the

is

pressed. The fill characters are

the

field

keyed

the

field. If

the

right-adjust field

the

field, press

ADJ

the

field

is

field having a minus sign.) If

is

alphabetic,

same way as a

set

has been verified, a

is

automatically

the

mode

the

data

programmed

The

characters

are

compared

the

character

into

device

then

duplication

with

4.

is

encountered

first

position

definition

is

compared

the

characters

either

and

the

dash key also verify

alphabetic. (The dash

the

last

character

inserted in

of

operation

set

label

is

selected.

the

rest

of of

with

the

corresponding

from

the

current

continues

feature,

the

corresponding

while verifying of

the

characters, and

with

do

after

verifying

RIGHT

character

in

the

verify

changes

displayed, an E

duplication

the the

the

corresponding

one

error

the

field until

the

not

ADJ

in

any

field

to

record in

of

the

is

posted.

comparing

the

characters

charac-

data,

compared

then

first nonfill

agree, a V

the

or

the

key

is

used

the

right-

the

field

other

position

be

the

char-

buffer

the

last

dash

field's

to

is

12

If a verification right-adjust field, an X error

changed by

Press RIGHT ADJ

error

two

depressions

occurs while verifying

is

displayed.

of

RIGHT ADJ

or

the

dash key, if applicable, every programmed right-adjust field. Press when

one

right-adjust field immediately follows

when

right-adjust fields

to

press RIGHT ADJ

adjust

field causes an error

contain

or

the

all fill characters. Failure

dash key

on

the

data

the

sign

The

sign can be

or

the

key even

another

end

of

keystroke.

of

a

dash key.

to

exit

a right-

from

and

Field

Correct

Field

correct

with a minimum

mode

can be selected

the

field

moves

Mode (C)

mode

correct

to

the

first position of

number

mode, press

field can be rekeyed

of

the

field

is

reached,

first position

of

the

may be used

of

keystrokes.

from

the

FI

the

as

if in

the

cursor

field and

the

to

correct

verify

mode

ELD COR.

current

enter

mode. When

then

moves back

mode

changes

an entire field

The

field

correct

only.

To

The

cursor

field, and

to

verify.

the

to

select

end

the

When a right-adjust field

record

on

the

3742

or

3742

with

the

128

but

RI

GHT

ADJ has tion ture,

indicator

or

81

for

is

129

3742,

In verify mode, RIGHT ADJ

only

when

the

cursor adjust field field of

the

sor

is

(to

verify a zero

is

full (the cursor will have moved

in

any

other

is

the

last field in an 80-character

or

a 128-character record

feature

not

for

and

is

and

yet

been pressed,

the

3741

the

cursor

or

in

the

first position

or

the

field has been verified

or

3742

is

not

the

dash key should be used

a blank field)

position, an R error occurs.

Signs

If

the

units position

a negative

number field are verified separately. units position verifies ed,

only

the

digit

is

not

affected.

The dash key also verifies

If

the

units position

(dash)

but

the pared. If from ter with

corrected,

the

field using RIGHT ADJ.

in a numeric right-adjust field, press ALPHA

the

dash key.

To

field

of

a numeric right-adjust field

(0

zone),

the

sign and

The

first

keystroke

the

digit. I f

portion

exit

is

from

the

of

a right-adjust field has a 0 zone

is

alpha,

the

entire

the

changed.

the

field, use

sign.

the

entire

character

To

character

The

character

verify a dash charac-

Hexadecimal Data

Verify hexadecimal

data

in

the

same way

1. Press HEX.

2. Press

two

character decimal digits the

last keystroke for

keys

wanted.

correxponding

The

character

that

character.

the with

displayed.

of

to

the

when

the

sign

the

is

changed.

it

is

on

the

3741

cursor

posi-

the

128 fea-

the

right-

or

when

the

first position

the

cur-

contains

value

of

the

for

the

is

correct-

(0

zone)

dash key.

is

com-

Exit

SH

1FT

entered:

to

the

hexa-

verified

after

Selecting field while processing a programmed

results

valid

in

changes back

backspace moves

correct

in

an M error. FIELD ADV

the

field

to

mode

correct

the

verify mode

the

cursor

mode.

out

when

auto

The

of

not

in

field in verify

and

CHAR ADV are

field

when

a field

the

current

verify mode

mode

correct

mode

or

character

field.

or

Search Mode (S)

Use

search

mode

to:

• Search

is

For

Note: After pressing any search key,

R

EC sing FUNCT SEL lower and RETURN pressing FUNCT

enter

data

ADV,

on

record address from read index,

mode.

to

end

of

data

from

read index or

on

content

on

sequential

from

content

read index

from

mode.

flow

information, see Figure 12.

the

search

SEL

operation

lower

can be canceled by pres-

and

UPDATE.

update,

update

or

update.

read index,

but

before pressing

TO

INDEX

or

mode.

update,

or

by

or

Search on Record Address

To

search for a record in a

location.

The

track beginning-of-extent address, one,

or

the

address

ses. Select

operation Selecting other

the

search mode

from

the

search by record address

mode causes an M selection error.

data

and

sector

the

of

any record

to

read index,

set, key its

track

and

sector

address specified can be

end-of-data address minus

between

do

a search

update,

these

by

or

enter

function

two

addres-

record address

mode.

from

any

the

Data

Station

Operating

Information

13

. .

Mask

IS

keyed Into _

the

current

buffer and

record

. d Keyboard

dlsplaye .

I

Mask

is

transferred hold buffer start

Records are read into current until a match

Records are read into

current

compared

and

the

mask buffer until a match is

found.

Figure 12. Data

at

of

the

search.

record buffer

is

record buffer

in

the

Flow

the

found.

with

hold

for

The search stops

at

record record buffer and

4j'iflllI~

to

DL-I

__

.....I

•

"""'

......

____

_

o

Disk

Search Mode

the

end

of

mode.

An

I

error incorrectly, if end-of-data address address track. to

If a search address

set, a Y error occurs.

occurs during a search

station

Search

To address minus one), press FUNCT

press SEARCH EOD. Select

function Selecting it

When set equal is set operation changes selected when of-extent found to

for

If

an invalid address was

the

first position

returns

to

search

from

the

to

displayed. The

equal

to

error

the

data

on

the

record address specified. The

the

specified address

the

previous record

the

search and

is

displayed

the

data

to

the

End

of

Data

to

the

last record

the

from

any

search

is

the

last record

contents

the

current

the

address, a Y

occurs during a search,

set

label.

the

if

the

address

read index, enter,

to

end-of-data address equals

is

or

less

than

set,

or

if

of

the

data line on

operation

If

a seek

to

record address

data

set

of a data

other

mode gives an M error.

completed,

in

of

record

update.

error

occurs. If a seek

greater

is

displayed.

mode changes

search address

than

the

beginning-of-extent

the

address

entered,

is

attempted

or

no record

label.

SEL lower

the

search

or

the

current

the

data

the

previous record buffer

buffer

If

this search

the

The

buffer

to

is

or

equal

is

on

the

cursor

the

display screen.

on

found

operation,

set

(end-of-data

to

the

update

disk address

set

and

the

operation

data

station

current

are equal

the

update

specified

to

the

index

moves

an

empty

error

the

and

then

end-of-data

mode.

the

record

mode

of

the

beginning-

or

no

record

returns

at

data

is

To

search

on

record address:

11.

EC

SEL lower.

ADDRESS. Pressing this key puts

the

numeric shift, blanks

the

cursor

to

level

O.

address

07011

number

ADV

of

the

record

of

the

in

the

format

and S

is

the

is

the

address of a record

to

start

the

search.

you

current

sector

1. Press FUNCT

2. Press SEARCH the

keyboard in record buffer, moves selects program

3. Enter

4. Press R

14

the in positions 1 through 5 The

address must be

is

the

track example, sector

the

current

position 1, and

are searching

record buffer.

TTOSS where T

number. For

at

track

for

07,

Search on

Use search on the tion called a mask. The mask can be of

a record character positions search

match between

character

in

the

ly as a character within a mask. field in a record contains ABIiCD ABlICD contains

in

the

acters might be in

Content

content

of

specified character positions.

the

identifying characters and

and

may include

will

stop

the

is

used

mask; therefore,

is

used,

AB

in

the

last

two

positions

to

find records

the

do

not

need

only on a record

record and

to

identify positions

the

search will

first

the

third

two

of

the

blank

positions

the

position

stop

field.

that

are identified by

The

specifica-

their

positions anyone entire record.

to

that

cannot

For

or

more

positions

The

be contiguous. The

contains

search mask. The blank

that

example, if a certain

and

the

on

the

of

Any

of

the

an

exact

are

not

included

be used successful-

search mask

first record

the

field and

of

the

256

field.

is

mask

that

CD

char-

Searching by

beginning with

the

current

Select

or

update

mode

content

the

search on

content

mode. Selecting this

causes an M

error

is

accomplished

record.

all

The

previous sectors are

function

to

occur.

To

in

a forward direction,

records

from

search

function:

Press FUNCT SEL lower and SEARCH CONTENT.

1.

The

record

into

the

current

display screen for review

2.

Key

the

search mask

Do

this

by modifying

ferred

into

the

current

the

mask

that

record buffer as

currently

the

record

in

the

record buffer

into

the

current

record

buffer

was

just

transferred

the

mask can be used

hold

buffer

and

displayed

or

modification.

the

current

mask

that

was

buffer

or

and entering new data. Also,

into

ing it.

Note: On mask includes be certain is

correct. FUNCT acters during

3.

Press R when data is

displayed. the CONTENT, and REC ADV reenter

Following a search

fer and data.

record

the

3742

with

the

128

feature

all

128

that

the

To

blank

SEL

lower and DELETE REC. Blank char-

in

a mask indicate

the

search

EC

ADV

to

the

data

station

characters.

portion

the

current

the

operation.

start

the

finds

The

of

the

record

record buffer, press

position

search.

the

The

record containing

being searched for (search mask), and

To

continue

same mask, press FUNCT

the

search mask.

the

previous record

If

the

entire

found,

the

search stops

searching

operation,

data

set

for

SEL

lower, SEARCH

in

that

order. Do

the

current

buffer

contain

has been searched and no

and

an S

played.

If a

deleted

the

data

search

momentarily

deleted

deleted record

record

is

in

the

deleted record does

continues

and a deleted record warning 6 appears

on

the

record matches

is

displayed.

read during a search

not

status

line. However, if

the

mask,

the

search

on

match

contained

not

checked.

the

read index

any

other

on

content

is

transferred

on

record

buffer.

just

trans-

by blanking

the

current

without

the

search

operator

not

displayed

is

not

compared

search stops

the

records using

not

record buf-

the

same

error

is

content

the

mask,

the

data

stops

and

in

the

chang-

must

the

record

dis-

and

the

in

the

For example,

the

part search on the

following procedure:

Press FUNCT SEL lower

1.

The

into

Press FUNCT SEL lower

2. the

Key

3.

the

4. Press REC ADV

When

the

AB

126

is

displayed.

repeat steps 1

that

data set

search stops and an S

to

search a

number

in

AB

126

content

record the

current

the

current

data

using

currently

current

record buffer.

part

number

record buffer.

station

positions 15-19,

To

find

and

4. If

that

contains

data

in positions 15-19,

AB

126

in

record buffer.

AB

to

start

finds

the

AB

error

is

Search on Sequential Content

Search

on

sequential

but

is

faster. Use search

the

records

fields are

in a data

in

ascending ceeding record record). Having faster searching because

on

Search

sequential or backward direction; from within a than

the

location

tion

will locate

If

a search fails played. Failure record

is

in

the

requirement

search failure, a search

same search mask.

track

in

order

content

on

set

are arranged so

order

must

have a higher value

the

search fields in ascending

of

the

content

therefore,

data

set

at a track

of

the

specified record,

the

specified record.

to

find

the

record sought, an S

to

find a record can

data

set

if one

of

ascending order. Therefore,

content

To

do

this, first

to

search

through

set

for

all records containing

perform

as

the

search mask. Use

and

SEARCH CONTENT.

the

hold buffer

and

126

the

first record

search

DELETE REC

in

positions 15-19

search.

stops

is

transferred

containing

and

the

record containing AB126,

search

cannot

126

in positions 15-19,

find a record

displayed.

is

similar

sequential

(the search field

to

search

content

that

the

than

on

only

search

of

each suc-

the

preceding

order

skipping

operates

of

records.

in

either

a forward

if

the

search

is

and

sector address higher

the

search opera-

started

error

occur

even

though

or

more records

do

not

after

may be initiated using

return

to

the

index

the

entire

data

set.

a

to

blank

of

record

in

~he

content,

when

permits

is

dis-

the

meet

a

the

Data

Station

Operating

Information

15

Select search on sequential enter

or

update

mode.

To

content

select this search:

from

the

read index,

10.

The other

fourth

than

position

1.

of

the

header

1 field

is a number

Press FUNCT

1.

TENT. The record transferred into played.

2.

Press FUNCT SEL lower and DELETE REC the

screen.

3.

Key

the

4.

Press R

When

the

record

Read Index Mode (X)

The

read index mode displays records representing system delete records

The have been

data. A special procedure

3741

or

met

SEL

search mask

EC

ADV

is

found,

the

volume label,

in

this mode.

3742

checks

in

the

data

lower and SEARCH

currently

the

current

to

start

it

to

set label:

into

in

record buffer and dis-

the

current

the

search.

is

displayed.

the

data

is

For

data

see if

the

SEQ

CON-

the

hold

buffer

to

record buffer.

on

the

index

track

set labels, and

required

to

write

flow, see Figure 13.

following

conditions

is

blank

other or

11. The record has been deleted.

When a header 1 record the

3741 or previous I ist. I f any displayed.

When from one

of

Modify Mode

Use

the

index track. Key modify mode can be selected from is

selected

mode

REC, RESET, and REC ADV are

modify mode.

to

read index

of

modify

3742

update,

the

can be selected from

verify,

index

track,

the

11

conditions

(M)

modify mode

by pressing FUNCT SEL lower and

from

another

All

after

mode.

checks

of

these

enter,

all

to

the

others

the

first

in

sectors

the

first eight

conditions

or

search

11

conditions

is

present, a B

write

data

record

the

read index

mode, an M

the

modify

give an F error.

keystroke

08

through

conditions

exist, a B

mode

are

error

or

to

delete

to

be

written,

error

mode. DELETE

the

only

following

26

is

read,

in

error

is

attempted

checked.

is

displayed.

records

then

M.

The

mode

only; if it

occurs. No

valid keys

The

mode

the

is

If

any

on

select

modify

other

in

the

reverts

selection

1. The beginning-of-extent address sector

01.

2.

The

end-of-extent address

sector

26.

3.

The

end-of-extent address

of-extent

4.

The end-of-data address extent

5.

The end-of-data address tor

6.

The

7.

The for not

8.

The of

address.

address plus 1.

01.

sector

record length

the

3741 or

equal

third

extent,

is

00

or

the

to

80

for

character

end

of

extent

greater

is

equal

3742

the

of

the

is

3742.

or

is

greater

is

less

greater

than

to 0 or

with

record address

end

O.

is

than

26.

the

of

less

than

the

than

the

than

track

greater

128

feature

data

track 01,

track

beginning-

end-of-

75, sec-

than

of

beginning

is

other

74,

128

or

than

I ndex record from disk current and displayed.

Record advance

transfers to

previous record

is

buffer.

Figure 13. Data

Field Totals Mode (F)

into

record

the

is

read the buffer

record

Flow

..........

for

------

Read

Index

•

o

Disk

Mode

9. The last record read track

00,

sectors 1 through

16

and

currently

.7.

displayed

is

from

Select field

the

read index

totals

or

mode

update

to

perform offline field

modes.

totals

from

STARTING

INFORMATION

Using

this

key

when

at

end

of

extent:

When

the

3741

or

3742

record, previous blanks, status the address blank.

Closing changes

the blank, and

A position 9 and have been successful,

RECORD

Use REC ADV

record buffer the current

Pressing REC ADV

record

Pressing search

read index

read,

but

volume

the

write

current

and

line displays

00000.

the

3741

test

on

are

disk address

displayed in

REC ADV

operations.

record,

the

program

the

mode

All

cover

on

disk

status

it

is

not

displayed,

label

is

checked.

disk

cannot

or

3742

is

made;

10

of

ADVANCE

during

the

index

transferred

record

buffer

power

is

turned

and hold

buffers are filled

machine-not-ready disk

(X), program level 0,

other

positions

the

diskette

to

wait

be

processed,

waits

if

not

the

status

sector

OPERATION

read index

track.

to

the

contains a deleted

is

incremented

during the

current

during

buffers

on

that

(W).

The

and

the

accessibility field in

If

the

accessibility field

an A error

for

the

disk

successful, ??

line.

If

08

is

read.

mode

The

contents

previous record

by

modify

search

index

sector_

mode

on,

the

are filled

with

and

the

status

has

been inserted

volume

to

be removed.

is

displayed in

all

read

of

the

buffer

record.

one.

mode

starts

current

N's.

status

current

line are

label

is

displayed,

the

current

writes

one

of

with

The

(N),

is

tests

The

the

disk

not

Gives an E

1.

Selects

2.

3.

4.

Pressing this

1.

2.

3.

4. Increases

If

data

read, R

step

3. The

reaches

Pressing

to

check automatically tion

error record record in fer

and

the

and

program

Selects read

Displays

key

Transfers to

the

and

moves

the

record.

Replaces

not

EC

ADV

mode

the

EOD address.

REC

for

blanks

occurs, verification

is

moved

the

displayed.

error.

level

O.

index

mode.

the

data

set

label.

in

update

mode

the

contents

record

the

cursor

to

the

old

record

buffer.

the

current

been

performs

changes

ADV

during

verify all trailing

into

hold

buffer

The

disk address

entered

all

to

verify

in

all remaining manual fields

the

previous record

is

then

current

is

read

into

(if

data

was

entered):

of

the

current

buffer.

into

the

first manual

on

the

since

the

of

the

enter

when

mode

auto

is

completed.

moved

disk address increases

the

record

current

disk

with

by

1.

current

preceding

record

causes

fields. If

buffer.

to

the

hold

buffer.

record

The

buffer

position

contents

record steps

except

advancing

the

station and

no

verifica-

present

The

current

buffer

of

was

buf-

by

1,

Pressing REC ADV

1. Transfers to

the

fields

and

2.

Writes

3.

Adds

one

disk address.

4.

Sets

the

Moves

5.

during

the

record

previous record

executing

the

record

on

to

the

end-of-data address

current

the

cursor

record

to

the

enter

mode:

from

the

current

buffer

skipping all manual

all

automatic

disk.

buffer

to

first manual field

fields.

and

blank.

record

the

position.

buffer

current

If a verification that

caused corrections ADV causes corrections ADV

is

pressed

tion

of

a record,

when a modification

alternate

An be selected dash will record advance skip

and cursor

at

return

the

lower

and

also establish

error

the

error.

to

the

record

are

made,

when

the

method

by

pressing

appear

in

function

duplicate

the

time

machine

K.

Inserting a disk

the

record have been made, pressing REC

fields

of

normal

occurs,

current

to

of

position

record advance are

to

the

cursor

When verification

to

be

written

the

record

is

the

cursor

is

record

the

present

record advance in

FUNCT

the

Data

39

in

enter

that

normal

mode.

Station

SEL

in

the

mode

follow

mode,

or

turning

stops

is

on

the

not

rewritten.

in

the

first

is

not

verified,

record has

enter

lower

status

is

changed

the

position not

press

the

Operating

at

the

complete

disk. If

If R

manual

been

mode

and

then

line.

The

so

of

executed.

FUNCT

power

Information

column

and

no

EC

posi-

except

made.

can

R.

that

the

To

SEL

on

will

A

17

DELETED RECORDS

Every

nondeleted immediately preceding mark

is

not

is

mark the

a D

and SEL and

modify

Mode Considerations

changed

record as being written

preserve

lower

NUM

SH I FT.

index

record

displayed.

to a control

in

the

first

the

data

and

then

mode

deleted.

simultaneously press DELETE REC

To

must

on

a disk has a

the

data

characters; this address

For

a deleted record, this address

address mark which identifies Deleted records normally have

data

position.

in

the

first position, press FUNCT

delete

records

be used.

for

Deleted Records

To

on

data

delete

the

address mark

a record

index track,

When a record advance occurs and a hold

buffer

(next

sequential record nondeleted passing all deleted records

is

encountered record vious record

When record

function

record

is

read

during record backspacing,

is

read

into

the

buffer

unchanged.

deleting a record,

buffer

remains unchanged

is

performed.

into

encountered.

current

the

contents

the

record

and

deleted

is

current

record

deleted),

record

If a

deleted

the

deleted

buffer

with

of

the

buffer

the

is

in

pre-

the

by-

Enter Mode: Pressing DELETE REC during

blanks

the

current

at

the

first manual position.

unchanged.

Update Mode: If,

index

track, a

the

buffer, deleted

buffer

the

If a ing,

When

D in content beep sor deleted

Verify Mode: When selecting verify

track,

into

If verify

the

nondeleted

either

previous record

record. If a

when

record

is

deleted

the

previous record

deleting a record,

the

current

in

the

occurs when

is

positioned

record.

the

first

the

current

mode

currently

case,

record

buffer

and positions

The

previous record

during

update

deleted

a record advance occurs during

not

record

current

displayed record

record

the

record

deleted

transferred

is

encountered

buffer

the

record

buffer,

record

the

delete

at

the

first manual position displaying

nondeleted

record buffer.

is

selected

previous record

is

from

read

is

read

buffer

record

to

the

is

first

character

and

buffer

function

record in

update

is

into

the

buffer

mode selection

into

will

contain

is

in

the

previous record buffer.

during record backspac-

not

changed.

the

remainder

remains unchanged. A

is

complete.

mode

the

data

or

a deleted one,

current

is

the

verify

blanked.

enter

mode

the

cursor

buffer

from

the

current

update

is

changed

from

set

record buffer.

the

is

mode

the

record

same

record mode,

to

of

the

The cur-

index

read

and

a

the

Search Mode: Pressing

blanks

at

the

first manual position.

and

the

search

the

current

record.

CE

MODE

CE

mode troubleshooting cribe

how points mode.

Pressing FUNCT machine in positions

Pressing RESET several times index

mode

the

machine leaves CE

3741

may

The

EOD and verify mark current should

In

the

current

record

at

operation

and

previous record buffers

is

used

the

this

mode

out

how

it

the

CE mode.

38,

39

and

with

be changed

when

the

be checked.

DE

record

buffer

current

by

is

SEL lower

the

CE

disk address are unchanged. If

terminates

the

customer

equipment.

works

entered

40.

label

mode,

and

mode

LETE REC during search

and

The

previous record

on a deleted

engi neer when testi

This manual

or

how

and

how

followed

The

status

returns

from

sector

the

program buffers

therefore

of

the

data

was

entered

positions

it

is to

by

line displays CER in

the

08

should

set

the

record,

contain

does

used

but

get

out

the"

key

machine

displayed.

be checked.

label

that

may be in

the

merely

of

mode

cursor

buffer

both

deleted

ng

not

the

puts

to

the

After

of

the

was

error

or

des-

the

and

18

(

Chapter 4. Operator Interface

DISPLAY

Station are displayed 3741, 1 indicates positions tion, 30 guidance feature_ Figure play screen. On 40-character lines 2 lists

The two acters porated of

modes

status

information,

for

operator

the

station

of

depending

positions

and

status

3742 40-character lines

of

data

into

the

128-character record

are used_

uses six

station

line 5 display

upon

of

line 5 and line 6 are used

the

lines

3 for

data

line positions

uses

one

in

two

the

128

status. Lines 2, 3,

the

3742,

of

display: line 1

or

line

for

lines, scrolling capability was incor-

feature. Scrolling changes

data,

and

program

use

on

a display screen. On

40-character

4,

either

data

or

display

14

program

for

data.

mode

shows

information

each

operator

for

information.

both

the

3741 and

displaying status, leaving only

In

order

that

is

displayed.

information

lines

of

display. Line

and

the

first

program informa-

selected.

for

the

on

station

status

Figure the

to

view

the

Three

the

eight

The

last

operator

the

dis-

uses

three

and

15

3742.

128

char-

portion

display

Display mode A shows

data

display line second 80 second line. Display

second line.

The the

position

B.

the

When a record advance occurs,

A unless the

ic

When the cursor mode B to

line. Display

on

the

first line

120

on

the

first line

choice

of

display

cursor. When

80

to

81,

Moving

the

cursor

display from

beyond

position

cursor

fields, past position

the

cursor moves backward

display changes

from position

mode

characters 1 through

and

characters 41 mode

B shows

and

characters

mode

C shows

and

characters 121

mode

is

the

cursor

the

display changes

from

position mode B to 128

is

from

A.

(to

000)

moved,

80.

mode C to

81

to

mode

80

through

characters

81

through

characters

through

controlled

moves forward

does

the

by

means

changes

from

120

C.

Moving

not

display

from

mode

the

by

to

change

of

position 121

40

on

the

80

on

the

41

through

120

on

81

through

128

the

position

from

character

mode A to

121 changes

the

cursor

the

display.

returns

leading

B.

display

to

automat-

Moving

from

first

the

on

mode

to

120,

the

of

Status

Line

Figure

ACME

Guidance Message

14.

Display

3

CORPORATION

ADDRESS

112

MAIN

Unit

with

Operator

Guidance

A A

112

MAIN

01001

ST

_~---I

ST/////////////////////

Cursor

E R

Operator

Interface

19

Display Position

Meaning

Display Position Meaning

1-3

7-8

9-10

12

17

20

25-29

31-35

38

39

Figure

Indicates is by 01 with

Codes tional

played

the

being processed. This

the

cursor.

for

the

3742

128

feature.

displayed

error

such as a keying error. Codes dis-

in position 8 indicate a disk

as a read error.

Codes

displayed in these positions indicate a

write

failure.

Number

of

the

formatting.

Field

definition

field (for example, alpha).

Program

Current

Disk 2 -

I ndicates station used

E

U

V

C S

shift

disk address indicator.

current

the

is

currently

modes

and

Enter Update Verify Field

correct

Search X Read index M - Modify

A dash indicates

nate

procedure

15

(Part 1

of

2).

Line 1, Device

particular position in a record

is

the

position

The

first position

and 001

in

for

the

position 7 indicate a func-

program level used

character

indicating

of

a record

3741

error

for

occupied

or

3742

such

data

type

character.

disk address.

machine

mode

operating. Most

their

codes are:

the

machine

in

which

is

frequently

using

the

for record advance.

Status

Line

that

is

of

data

alter-

40

Indicates

the

current

status

of

codes are:

Not

N -

ready (disk

not

loaded)

W - Wait

R - Ready

**For

error

code

listing, see

Figure

15

(Part 2

of

The

128

feature

and

a scroll backward (SCRL BKWD) key. Pressing FWD moves mode B to

moves

the

includes a scroll forward (SCRL FWD) key

the

display

mode

C.

cursor

to

Pressing SCR L BKWD while in to

mode

B.

Pressing

ges

the mode the

display

A positions

record.

to

2).

Line 1, Device

from

Pressing

column

SCRL

mode

A. Pressing

the

cursor

Appendix

mode A to

SCRL

000.

mode

BKWD

to

the

A.

Status

Line

mode B or

FWD while in

C changes

while

in

SCRL

first manual position

KEYBOARD

The

3742

keyboard

board

is

shown

of

keying

64 HEX key, all to

the

data switches, a Using

the

keys

various

data

keys,

group

station

is

shown

in Figure 16;

in Figure 17. The

different

256

displayable characters. Using

EBCDIC codes can be

there

are

two

of

special keys,

and

switches in specific sequences

operations

data

function

and

by

selecting

keys provide a means

keyed. select keys,

two

tions and machine modes.

Switches

The

functions

of

the

three

switches

on

the

listed in Figure 18.

Function

The

perform

above

green

also green.

white

Select

two

FUNCT

the

functions

the

keys.

is

associated with

The

is

associated with

Keys

SEL

keys redefine

noted

on

the

The

lefthand

the

FUNCT

upper

righthand FUNCT

the

lower

the

top

two

rows

SEL

set

of

labels, which are

SEL

key

set

of

labels, which are

also white.

the

disk.

The

SCRL from

mode

the

display

mode

B chan-

BKWD while in

the

3741

key-

the

In

addition

three

rows

of

labels.

controls

certain

keyboards

row

of

labels

key

lettered

func-

are

keys

just

in

C

of

to

in

20

~

......

....

,

.,.....

,

.... ,

.........

.....

..,."

Ofr«.y

.

Figure 16.

Character Keys

All capability, alpha and the keys overrides

Function

Function function or

feature

ALPHA

numeric SH I FT

3742

Keyboard

character keys

as

indicated

numeric. Normally

active program; however, pressing the alpha

the

Keys

keys, used alone

keys

or

operation

SHIFT

:

shift.

Simultaneously

and

the

desi red character key.

with

128

except

A and Z have dual character

on

the

key

the

program

character keys,

Use

to

this

the

shift

or

3741

key

in

to

Feature

, provided shift

selection .

combination

define

or

3742.

override programmed

hold

down

by

is

determined

with

a specific

ALPHA

two

shifts,

or

numeric

other

function

by

CHAR

ADV

:

position position error.

without

. This key

CHAR BKSP:

previous manual except in cuted.

COMM:

ications mode .

COMPUTE

offline

manual

position

verify

Use

FIELD

field

totals

Use

this

key

to

move the cursor

changing the data stored in the present

is

invalid in

Use

this

position. If

of

a record,

mode where leading

this

key

to

TOTALS:

in

read index

verify

mode, giving

key

to

return

the

cursor

the

CHAR

auto

place the 3741 Model 2 in

Use

this

key

or

update mode .

cursor

is

in the

BKSP

fields

to

forward

is

perform

an

to

the first ignored,

are

re-exe-

commun-

one

L

Operator

Int

erface

21

Figure 17. 3741

Keyboard

(Mod

el 1)

COPY: Use this key

simultaneously

with

NUM

SH I FT

to

perform

the

disk

copy

functions.

DASH: Use this key

in a numeric

right

adjust

field instead

of

the

right

adjust

key

to

insert a negative sign in

the

units

position

of

the

field,

in

addition

to

performing

the

right

adjust

function

.

DISK

2 REC

ADV:

Use this key

to

read

the

tial record from disk 2

or

to

perform

search

operations

on

disk 2. This key

is

invalid

when

the

disk

is

positioned

at

track

~O,

sector 26.

If

a disk 2 record advance

is

the

first

disk 2

operation

after

the

second

disk has been inserted,

the

data

set label

at

track

~O,

sector

08

is

displayed. An E

alert

is

displayed if this key

is

pressed

when

already

at

the

last record

of

the

data

set. All disk 2 record advance

operations

end

with

the

disk 2 address displayed and

the

cursor in position 1

of

the

record.

22

DISK

2 REC BKSP: Use t his key

to

read

and

display

the

previous record

from

disk 2. The disk 2 record backspace

operation

ends with

the

disk 2 address displayed and

the

cursor

at

position 1

of

the

record. If a disk 2

record

back-

space

is

the

first disk 2

operation

after

the

second

disk has

been inserted,

the

data

set

label

at

track

~O,

sector

08

is

displayed.

DISK

2 RETURN

TO

INDEX:

Use this key

to

read and

display

the

data

set

label associated with

the

current

data

set

on

disk 2.

If

a disk 2

return

to

index

is

the

first disk 2

operation

after

the

second

disk has been inserted,

the

data

set label

at

track

~O,

sector

08

is dis

played .

DISPLA Y DA TA: Use

this

key

to

display

the

data

in

the

current

record.

Switch

AUTO DUP/SKIP

AUTO REC ADV

PROG

NUM

SH I FT

Function

When

in

the

OFF

position, all skip

and

dup

fields are fields. When skip and

dup

treated

in

the

ON

fields are handled as

programmed.

When in

the E in the automatically

This switch

under trol. When in

position,

through

the

ON position and either

end

o~

the

logical record

the

data

program

that

is

encountered,

has been keyed

written

is

active

on

only

program numeric shift con-

the

NUMBERS ONLY

only

the

characters 0

9,

dash

(-),

space, and

plus (+) are valid. When in CHAR position, ter

restriction.

there

is

as manual

position,

or

is

disk.

when

the

ALL

no charac-

an

DELETE REC: Use this key during

modes

to

delete records

index, enter,

or

search

DUP: Use this key in data

already

and

NUM

tion

of copied from field. valid in

Press

data

in

The

characters in

with

the buffer. If position

ENTER: Press new

data

entered

SH I FT

data

from

the

In

a right-adjust

the

first position.

this

key

in

the

present

corresponding characters in

the

characters differ,

that

is

different,

this

set.

on

the

disk. Use it during read

mode

to

blank

the

enter

or

in

the

previous record. Pressing DUP

at

the

same

time

program

buffer

4.

present field position

or

self

check

verify

mode

to

automatically

field position

the

current

to

record buffer are

the

and

a V error occurs.

key from

the

index

update

and verify

the

display.

update

mode

to

copy

causes auxiliary duplica-

In

both

cases,

data

is

to

the

end

of

the

field, this key

the

end

of

is

verify

the

field.

only

the

compared

the

previous record

cursor

stops

in

the

track

to

enter

a

Figure 18. Switch

DISPLA Y

30

characters

positions

DISPLA Y

three

field

beginning

the

display and redisplay

R.

R resets

DISPLA Y

characters

of

line 5

on

Functions

FIELD

of

FIELD

of

FIELD

PROG: Use this key

of

the

current

line 5

on

the

TOTALS: Use this key

total

accumulators

a field.

the

To

accumulators

NAME: Use this key

of a prompting

the

display screen.

program field in

display screen.

when

remove

the

data

to

message in

DISPLA Y PROG: Use this key

program.

to

the

field totals

display

to

cursor

up

the

last

display

is

at

data

the

from

record, press RESET

zero; RESET does not.

to

display

the

display

last

the

30

positions

current

up

to

30

the

to

or

30

FIELD

position in is

FIELD

first position

in

cursor

ADV:

Use this key

of

the

field

from

invalid

in

verify

BKSP: Use this key

of

the

first position

back

to

the

which

mode,

the

current

of

the

first position

to

move

without

the

advance

is

giving an L error.

to

move

field. If

current

of

field,

the

field. Field backspacing over a record

permitted. in verify mode

FIELD

time when making several this key changes correct. current

ing,

the

cursor

machine returns

If it

is

attempted,

the

leading

no

auto

COR: Use this key during

corrections

the

mode

of

operation

The

cursor

moves

to

the

field. The record

cursor position. After

returns

to

the

to

is

displayed

first position

verify mode.

the

action occurs

fields are

the

first position

entire

of

the

cursor

to

the

changing

the

made. FIELD ADV

the

cursor

back

the

cursor

is

already

the

key moves

previous manual

boundary

is

not

except

executed.

verify

mode

to

a field. Pressing

from

verify

to

of

the

up

to,

but

not

includ-

field

is

keyed,

the

field,

and

the

first

to

the

that

save

field

data

the

DISPLA Y PROD STAT: Use statistics in read index

or

enter

this

mode.

key

to

display

production

HEX:

Use

this

codes. Press H

repeat

this for each mal digits are 0 D can be

entered

key

to

enter

EX

followed by

two

anyone

hexadecimal digits. The hexadeci-

of

two

hexadecimal digits;

through 9 and A through

by pressing

the

dash

the

256

EBCDIC

F. Hexadecimal

(-)

key.

Operator Interface

23

NEW

LINE:

printer.

NUM SHIFT: Use this key shift

or

the

NUMBE

down

to

NUM

Use this key

override

RS

ON

SHIFT

the

PROG

L Y position. Simultaneously hold

and

the

to

skip

to

a new line

to

override programmed alpha

NUM

SH I FT

desired

character

on

switch when

key.

the

in

RESET: Use this key

keyboard

To

RESET. Use RESET

the

1.

lockout

correct

disk errors, hold

following:

A search while

the

(the

content

search

to

reactivate

keyboard

down

in

any mode

or

search sequential

is

taking place.

the

keyboard

is

made inoperative) occurs.

NUM

SH I FT

of

operation

when

and to

content

press

cancel

function

PRINT

being displayed. returns pressing

PRINT

or

3741 printed. This key

this

and entered.

PROG

store

FUNCT

corresponding

REG

record.

REG:

Use this key

to

the

mode

PRINT

TO

EOD: Use this key

to

print

from

is

in

the

read index mode,

key

in

the

enter

displays

ADV:

the

LOAD:

auxiliary duplication

SEL

lower, PROG LOAD, and

to

Use this key

to

After

the

printing

of

operation

REC.

the

current

is

invalid mode changes

data

set

label

Use this key

data

a program key.

to

print

the

record

currently

is

complete,

being used before

to

print

an entire

disk position

the

entire

in

the

verify mode. Pressing

the

mode

of

the

current

to

store new programs and

for program level 4. Press

then a number

move

to

the

to

data

the

set

to

read index

data

sequential

3741

data

set

the

is

set being

to

2. A pending program selection

3. A modify index

4.

A

hex

~eying

5. Functional error.

6.

Function

RETURN

index mode. Pressing RETURN TO INDEX causes

following actions:

1. Returns

2.

3.

4.

TO

INDEX:

to

Displays

Makes

equal

Updates label if a record has been

the

to

the

function.

sequence.

select.

Use

current

contents

data

current

contents

end-of-data address field in

data

of

or

this key

the

of

to

set

label.

set

label.

previous record

the

current

entered.

program load

change

to

buffer

record buffer.

the

operation.

read

the

data

set

REG

BKSP: Use this key

first manual position already in the vious record. the

mode

Pressing R results correct search

24

cursor

current

changes

in

mode

the

first manual position of

moves back

The

previous record buffer

record buffer. Pressing REC BKSP

the

mode

EC

BKSP

no

action. Record backspacing

causes an L error. Record backspacing

is

limited

of

to

from

to

move

the

cursor

the

to

the

current

update

record. If

the

current

first manual field

is

made equal

mode.

beginning-of-extent address

in

the

current

record.

back

the

of

in

field

to

the

cursor

record,

the

pre-

enter

in

to

the

I nserts a blank in

5.

has been

is

mode.

6. Selects program level

The

EOD field in end-of-data address address when RETURN TO INDEX tion

is

needed

If

this

happens, press RETURN TO INDEX. This

the

EOD field been released in processing

completion

written

in

is

completed,

of

the

data

is

equal

case

enter

the

data

the

enter

function.

the

verify

in

enter

mode

O.

set

label

to

the

mode

set

label until

mode. When

a beep occurs

mark

field if a record

or

changed in

is

not

updated

beginning-of-extent

is

pressed. This protec-

is

selected

the

to

indicate

if

by

accident.

protects

first record has

end-of-data

the

update

the

RIGHT

ADJ:

Use this key

to right-adjust field. RIGHT ADJ programmed

shifts

cursor characters characters are

as right-adjust fields. Pressing RIGHT ADJ

the

characters keyed in

position

to

the

either

the

left

right field

of

the

first keyed character.

zeros

or

definition character.

exit

from a programmed

is

valid

only

for

the

field

up

to

the

boundary

and

blanks depending

fields

current

inserts fill

The

fill

on

the

field

SKIP: Use this key

tions

of

the

present field.

field, this key

SCRL FWD: This key

128

feature. Use this key

the

record forward.

is

invalid

to

enter

after

is

only

to

In

blanks

into

a right-adjust

the

first position.

contained

move

the

displayed

the

remaining posi-

or

sel

f-check

on a 3742

portion

with

the

of

SEARCH ADDRESS: Use this key

by

record address.

SEARCH CONTENT: Use

SEARCH

tial

SEARCH EOD: Use this key

recorded in a

SEL PROG: Use this key

desired in 3742,

the

SEQ

content.

conjunction

or

a 0

128

feature.

CONTENT: Use

data

set.

through 9 or A on

this

key

this

to

search

to

select

with keying a 0

the

to

search for a record

to

search by

key

to

the

program

to

content.

search sequen-

the

last record

.Ievel

through 6 on

3741 and

the

3742

with

SCRL BKWD: This key

the

128

feature. Use this key

of

the

record backward.

TAB: Use this key with

UPDA TE: Use this key

VERIFY:

Use this key

is

only

the

to

change

to

change

contained

to

move the displayed

print

feature

to

for

update

to

verify mode.

on a 3742

formatting.

mode.

with

portion

Operator

Interface

25

Chapter 5. Programming

Information

Programs similar

can

be

written entered data. than from

into

from

The 3741 storage through

numbered 1 through

used

manual line.

on

Normally, programs

data.

the

current

the

current

disk.

for

9 and A.

is

displayed in

control,

to

control

disk using

Programs are

record

and

the

3742

up

to

ten

The

program

PROGRAM CODING

The

first

character character, field begins. being processed

position

the

An E

or

continuation

long

3741

character.

When ter

R

EC

characters

character

blanked, and

in

position

defines

long,

appropriate

character

for

the

or

the

cursor

in

the

program, a record advance occurs if

ADV

switch

in

is

and

000

on

00

in each field, called a field

the

The

field

is

displayed.

the

first

field

normally

character.

3742

or

3742

with

reaches a

is

the

status

set

to

E,

the

position

the

3741

or

000

those

used

on

the

data

set

format.

the

same

procedures

are

stored

loaded

into

buffer.

buffer

with

different

3742

6.

The

the

status

type

definition

continuation

that

the

on. If this switch

line are changed:

the

field

or

3742

causes a

Programs

from

the

128

programs,

stores

up

number

line. When

level 0

is

displayed in

of

field and indicates

character

If a field

character

characters.

follows

are

the

Programs

128

featu re

position

continuation

indicator

with

Terror.

characters

the

IBM

029 Programs are used

in a different

the

program

can

either

the

feature

numbered

to

six

programs,

of

the

program

operating

of

is

more

is

followed

last

program

that

are

long

do

not

containing

is

off,

the

field

character

is

set

to

00

128

feature.

Card Punch

to

enter data

buffer

be

entered

keyboard

provide

1

being

under

the

status

definition

where

the

field

than

one

definition

80

characters

for

the

use

the

an E charac-

the

AUTO

following

definition

is

on

the

3742

Keying

set

or

each

by

E

LOADING A PROGRAM

To

load a

program:

1.

Press PROG LOAD.

2.

Press

the

key indicating

the

program ber 1 through 6 on 9

or A on

The

contents

into

the

selected

buffer

is

filled

To

cancel a

error

is

posted

the

of

the

program

with

program

in verify

is

to

be loaded. This can be

the

3741

or

current

blanks,

load

function,

or

SELECTING A PROGRAM

To

select a

the

gram

can be

3742

3742. number

In

order being used first program an 0 at

the displayed. program advance selected.

program

numeric

buffer

containing

any

number 0 through 9 or A on

with

128

Pressing

gives a P

to

select a program,

and

position

is

not

error

is

start

of

The

is

selected

function

for

key

corresponding

feature,

any

key

error.

the

program

on

a field

at

the

displayed;

a field

or

program

at

occurs

start

end

data

the

'or

other

or

if

the

in

after

the

program

3742

or

the

3742

record

buffer

buffer;

the

then

and

program level 0

field

correct

entry,

to

the

program

any

number 0 through 6 on

than

a valid

both

the

being selected

end

of

a field

program

end

of

a record, a P

control

of

record

the

program has

does

buffer

any

number 1 through

with

128

are

the

current

press RESET.

modes.

press

SEL

number

you

want

the

program

must

a record. If

or

the

end

to

be selected

not

condition, a record

where

any

num-

feature.

then

loaded

record

is

selected.

An

M

PROG

and

of

the

pro-

to

use. This

3741

or

the

buffer

currently

be in

the

current

of a record,

is

error

is

change. If a

been

the

not

For

a list

of

field

definition

see Figure 19.

Figure

20.

26

For

other

characters

character

code

and

their

meanings, see

meanings,

Field Definition

Characters

Keyboard

Shift

Meaning

N

A

B

J

R

0*

U*

S*

K*

v

w x

Numeric

Alpha

Numeric

Alpha

Numeric

Alpha

Numeric

Alpha

Numeric

Alpha

Numeric

Numeric field

Alphabetic field

Unconditionally bypass the field

Right adjust numeric field with blank fill characters

Right adjust numeric field with zero fill characters

Right adjust alphameric field with blank fill characters

Automatically duplicates

Automatically skips

Bypass numeric field during verify mode only

Bypass alphabetic field during verify mode only

Bypass right adjust numeric field with zero fill characters during verify mode only

y

z

H

c

F*

G*

L*

M*

Any fields definition character followed

by

1,2,

or

3

*These are

Figure 19

automatic

(Part 1

of

2).

fields

Field

Numeric

Alpha

Numeric

only

with

Definition

the

AUTO/DUP

Characters

Bypass right-adjust numeric field

with blank fill characters during

verify mode only

Bypass right-adjust alpha field with blank fill characters during verify mode only

Self-check, modulus

Field totals

switch on.

entry

10 field

11

field

10 skip field

11

skip field

10 duplicating field

11

duplicating field

Programming

Information

27

Field Characters

Any by

4, 5,

Any

by

7, 8,

Figure

19

Definition

8 field followed

or

6

8 fieI'd followed

or

9

(Part 2

of

2).

Field

Keyboard

Shift

Definition

Characters

Meaning

Field

totals

Field

totals

readout

field

and

reset field

Character

- (dash)

. (period)

E

Figure

20.

Additional

DISPLAYING A

On

the

3741

the lines 2, screen On

the

3,4,

by

pressing

3742,

and

only lines 2

display.

To

display last FUNCT

the characters

30

positions

field

the

SEL

is

longer

of

upper

the

Keyboard

Shift

Numeric

Alpha

Not

applicable

Character

PROGRAM

program the

first

FUNCT

field in

of

the line 5 and

than

field

are

in

control

eight

SEL

and

program

on

the

DISPLAY

30

characters,

displayed.

Meaning

Continuation for

numeric

Continuation for

alphameric

Indicates

the

Codes

the

program

can be displayed

positions

lower

3 can be used

of

line 5

and

DISPLAY PROG.

for

being processed in

display screen, press

FIELD

only

the

character

fields

character

fields

end

of

on

the

program

the

PROG. If first

30

PROGRAM

Program formats

CHAINING

chaining

are

being processed

programs are

is

to

be selected appropriate program with gram program the

128

termination

Acceptable

o

through 6 for

for

the

128

number

for

feature.

program

3742

of

characters

(corresponding 128

feature.

are

part

of

the

as

numeric

If

program

feature,

ter

between characters. preted their

continuation

chaining

there

the

Otherwise

as field

chaining

is

used

to

be

selected

when

number

and

feature.

is

When

indicated

and

The

program

the

current

for

3742

and 0 through 9 and

to

program

If

the

program

programmed

is

used

must

be

field

definition

the

totals

characters

function.

where

in

automatically.

record

advancing in

position

record

in

position

record.

program

level A)

chaining

field,

characters.

on

at

least

one

chaining

records having

sequence

position

128

for

and

is

indicated

80

3741

backspacing,

79

of

127

for

3741

selection

occurs

chaining are

for

3741 and

characters

the

characters

the

3741

with

field

continuation

character

and

characters

in

addition

different

corresponding

The

by

of

the

current

or

3742

the

pro-

the

current

or

3742

at

the

numbers

hex

FA

3742

specified

are

treated

the

field

charac-

the

chaining

will be inter-

to

performing

the

with

totals

MODIFYING A PROGRAM

To

modify ALPHA The buffer now follow correct

28

SHIFT

current

and

be

modified

the

mode,

an existing

or

NUM

program

level 0

by

standard

this

reloading

procedure

program,

SHIFT,

is

then

keying.

press

and DISPLAY PROG.

placed in

is

selected. To

reload

procedure.

gives an M

FUNCT

the

current

The

program

this

program,

I n verify

error.

SEL

lower,

record

can

or

field

OPERATOR GUI DANCE

On

the

3741

operator displaying information and 6. Line 5 displays

prompting

the

message. Line 6 displays

current

field up

positions within

ter

(f).

The

prompting ters long buffers. Each program in

that

is

The they

and

are

prompting

the

is,

the

prompting

associated with

maximum.

are stored in program levels

guidance assists

on

the

to

the

field are indicated by

messages may be

stored

in

record

the

program

number

of

the

last

current

cursor

position. The remaining

the

even

record

is

numbered

stored

prompting

2,4,6,8,

the

operator

30

positions

of

lines 5

program field or a

the

data

entered

the

slash charac-

up

to

30

charac-

numbered

associated with

program

the

program buffer;

in program buffer 2

in program buffer 1.

records

is

and

five,

A.

by

and

into

The

first character delimiter character, asterisk message consists

followed by

field

must

have a corresponding prompting message

record. If no message

in

t~e

of a prompting

of

the

same

prompting

(*).

characters

delimiter

record will

record

must

Each

prompting

to

be displayed

character. Every

prompting

is

desired,

contain

delimiter characters (delimiter characters are

be

the

pro~ram

message in

then

the

only

the

not

displayed).

the

two

Programming

Information

29

Chapter 6. Production Statistics

Production statistics

on

the 3741. Production statistics provide statistics on data

production errors, and accumulate totals on:

• Number

• Number (includes

COUNTERS

Keystroke Cou nter

This 6-position

keystroke,

1.

2. Keystrokes with a pending error condition

3.

4.

for

job

of

all

except

RESET.

or

(dash)

R key when used ing production statistics.

Field totals.

is

standard on

use

in

measurement

accounting. Three counters are used

keystrokes

records processed

characters corrected during

characters keyed

counter

& when used

the

following,

(000,000

to

restore

the

3742

and a feature

of

workload, analysis of

the

verify mode

in

field

correct

to

999,999)

in

all modes

to

reset a self-check error.

the

display after display·

counts

of

mode).

operation.

except

to

every

from the first manual position of counter

counter

flow condition

Verify

This during mode adjust field a self-check error. The verify correction counts reaches

dition

DISPLAYING PRODUCTION STATISTICS

To display

stroke counters during index mode, press FUNCT SEL low-

er and DISPLAY PROD STAT. The in

-

The record

count

Press RESET display is

counts

to

a maximum

reaches 065,535, it

is

indicated.

Correction Keystroke Counter

counter

the

returned

counts

the

number of characters corrected

the

verify modes or entered during field

except

when a sign

or

when a dash or ampersand

to

a maximum

065,535,

is

indicated.

first

in

columns 9-14, and

in

columns 16-21.

the

it

the

keystroke, record, and verify correction key-

21

positions with a blank between each counter.

count

is

to

redisplay

data set label and zero

to

position 1

is

of

065,535. When

is

reset

displayed

the

of

the

record. The record

of

065,535. When

is

reset

to

000,000.

changed on a numeric right-

is

keystroke

the

to

000,000.

in

the

verify correction keystroke

data set label

the

record.

No

counters

columns 2-7,

the

counters. The cursor

the

No over-

correct

used

to

override

counter

overflow con-

are displayed

the

keystroke

or

press R

to

re-

Any keystrokes during disk copy, print, communica-

5.

or

tions, offline field totals,

Any FUNCT

6.

When

the

keystroke

is

reset

to

000,000.

Record

The record cessed vances been entered into vances in the verify mode are

30

Counter

counter

in

the

in

the

SEL key sequence.

counter

No overflow condition

counts

enter,

updaie, and verify modes. Record ad-

update

mode are

the

current

search.

reaches 999,999,

the number

not

counted

record buffer. Record ad-

not

counted if performed

the

is

indicated.

of

records pro-

unless

counter

data

has

the

To display

tions

must

1.

Must be under program level

2. No data has been entered into buffer and no leading executed

3.' On length

When production statistics are displayed cursor written counters

counters

be true:

in

the

3741 or

is

21

is

positioned in column 22. The statistics can be

by

pressing REC ADV. Production statistics

cannot

in

the

current

the

or greater.

be reset

enter mode,

O.

auto

dup/skip fields have been

record.

3742

with

in

enter

mode.

the

following condi-

current

128 feature, record

in

enter

record

mode, the.

Chapter 7. Field Totals

Field totals can be used for batch auditing, a process sometimes referred where totals are required, such individual items cost.

Two

read

out

to

as

hash totals, or

on

an invoice

or

more fields within a record can be added and

into a

summary

field

for

as

summing

to

obtain

in

the

other

applications

the

total

same record

prices

order

or

a

of

following record (crossfooting).

Field totals can be process offline, 3741 or

of

entering, updating,

in

a separate scan

3742.

ONLINE FIELD

Three 19-digit accumulators are provided with

Data can be algebraically from

specified fields in any summation specifies three

that

accumulators

fields are identified by following a field with a 1, 2, ulators the to

is

to

field definition

be accumulated

order

14

digits accumulator. If overflow accumulator, it will

In

addition

may include any

the

low-order accumulate with numeric values 0 through 9. All codes accumulate with a numeric value

in

which

the

bits equal

to B or

done

(1) online

or

verifying records,

of a batch

TOTALS

summed

or

all records in a batch.

is

under

control

a field

is

the

or

3 which specifies which

be used.

character in

of

a field

of

the

to

be

summed

sum will be placed. Field total

The

second and

may be used

two

or

three

total

field are added

beyond

not

be indicated.

to

the

numbers 0

of

four

the

bits

through

256

EBCDIC codes.

of

the

codes equal

units position codes have

D are considered negative.

on

the

3741 during

of

records,

in

these

accumulators

program;

the

and in which

definition

of

the

three

third

positions

to

cause

accumulators.

into

19

digits occurs

9,

a field

All

to 0 through

of

zero.

the

high-order

All

or

(2)

on

either

this

feature.

The

program

of

the

character

accum-

after

the

The

low-

a specified

in

an

total

field

codes with

other

All

fields

four

other

the

field

9

fields are considered positive.

In online field only

when

plished by pressing

when entering a field in a record

read

out

totals

and reset

field totals

totals,

the

accumulators are reset

the

power

is

turned

on,

when

the

R key with field

that

is

and reset field. A good practice

the

accumulators before starting an online

operation.

to

zero

a reset

is

accom-

totals

displayed,

programmed

is

to

display field

as

During an online field

is

added

to

an

accumulator change comes

tracting

that

into

enter

mode, when

is

always blank

the

amount amount added amount

entered. I n

is

zero unless added the

amount

of

occurs

the

added

initial

the

field.

The accumulators represent the

most

advanced record

tions

on

the

current

a record

or

backspacing partially entered, accumulated fields are algebraically

totals

in

that

field from

field until

and

the

its

to

cursor

the

numeric

accumulator

update

the

field

is

the

algebraic difference

amount

of

written

operation,

a given field

cursor leaves

comes

value

or

verify mode,

is

modified, and, if so,

the

field

the

amount

is

equal

the

time

the

field. In

into a field,

is

zero;

therefore,

is

equal

to

the

obtained

field from

on

the

totals

operations

disk and any opera-

record being processed. When deleting

to

a previous record from a

updated,

or

verify-corrected record, all

subtracted

that

to

cursor

the

amount

by sub-

final

from

the

field

the

to

the

specified accumulators.

Displaying Field

Field

totals

is

at

the

beginning TOTALS. Any from

the accumulators are displayed. accepts only the

field totals display, displays

resets all accumulators

the

field totals display

not

reset

Read

Out/Reset

In

enter

mode, field definition to

be read

specified by

or

a

9.

In

lators

update

is

added

Totals

accumulators

of

data

screen, and

two

keys, RESET

the

accumulators.

Fields

the

code,

out

into

7,

accumulator

and

verify modes,

to

the

can be displayed when

the

a field by pressing DISPLAY FIELD currently the

to

and

numbers

B,

the

field and reset.

amounts

being displayed

amounts

At

this

and

the

currently

point R. Pressing R removes data

residing

the

set

label, and

is

removed

system

zero. Pressing RESET removes

displays

cause

the

record,

7, 8,

and

9 following a bypass

the

specified accumulator(s)

but

does

Accumulator 1 is

2 by

8,

and

accumulator

the

amount

that

already exist in

in

the

accumu-

the

cursor

in

the

3 by

field.

Field Totals

31

Online Field Total Restrictions

To

ensure

the

accuracy

remember

• When using all programs used

• When deleting a record

record, select

spacing over

record.

• A field

the accumulator.

• Backspacing over a previous record with a field programmed allowed.

• After a record in grammed affected

this field

that correct that

•

cursor

• Selection of functions, should be avoided

• Program load level 0

the

following restrictions:

more

record

from

a partially

the

programmed lator read grammed manual field and

In

update

it

is

into

same record by a field

to

have an

updating

the

to

accept

by

the

total

the

accumulator

program level,

is

to

contain

mode,

not

executed

enters

second

and

to

maintain

of

the

field

total

than

one

program

must

have identical field

or

backspacing

entered,

the

same program

record

that

was used

to

have

the

it

must

be preceded

must

totals

accumulator

a record, deleting a record,

verify mode,

an

operation

operation,

the

a field

if R

that

field.

disk functions,

print

functions

to

functions

online

all

accumulator

must

record advance

is

to

be read into, select

and

field advance over

total.

that

EC

ADV

maintain online field

should

field

to

updated, for

deleting

contents

by

not

field relating

read into

succeeding fields pro-

total

be

executed.

is

to

have a

is

pressed

communications

other

than

be

done

totals

in

the

accumulator,

process a record,

total

fields.

to

a previous

or

verified

and

back-

to

create

that

of

an accumu-

at

least

one

be followed

that

to

total

before

print

under

integrity.

to

that

it

is

not

or

correcting

were

To

the

record

the

read

the

record

total

integrity.

program

within

execute

field

pro-

into

Example

The

transactions

Item

31621 1621 10897-

41621

10021 121 21100

Each

transaction cost. Each the

transaction determine if the

entering process. computed, total summary

pared with

equal, all

not smaller

or

duplicated. subtracting the entered

To

use

accumulator

N

To

read the the

N----

and

cost

from record.

the

equal,

the

total

transaction

on

the

cost

----

R 2

--------

accumulator 2 into accumulator summary

B8--------E

for

one

day

of

business are:

Number

Total Cost

record

contains

item sold

any

transactions

to

4463

2, use

is

considered

records are

of

programmed as a field totals field,

the

accumulator

Then

precomputed

larger

determine

For

example, if

from

for

item

disk.

as a field

the

entered,

the

transactions were

To

do

this

the

field

were

total

can be

which

5197

number

totals

following program:

Item

1621

1100

5197

the

item

one

transaction.

the

cost

must

be read

totals

total can be com-

total cost. If

entered.

subtracted

transaction

the

field

gives

734

which indicates

10897,

field

to

be

E

the

summary

to

zero, use

record:

the

following program

Cost

734

number

operator

skipped

field

must

into

the

totals

If

the

totals

from

was

totals

total

cost

734,

accumulated

record

and

After

must

during

be pre-

and

the

a

are

the

skipped

is

4463,

that

was

not

and

reset

for

item

in

32

OFFLINE

The records The accumulators

fic fields

include

EBCDIC characters.

equal

.

All units

or

B

In

addition online fields allows

into a record

FIELD

offline field

that

offline field

into

any

to 0 through

other

codes have

positions

TOTALS

totals

have already been

totals

to

add,

the

assigned

number 0 through

9 are added with a value 0

the

codes

D are negative fields.

to

the

field

total

feature,

the

user

to

read field

without

feature

under

accumulator.

All

codes with low-order

value

have

the

totals

the

resetting

Selecting Offline Field Totals

The

offl ine field read index the

mode

the

status

field

totals

the

other

totals

or

update

changes

to

line. On

display

keyboard.

feature

mode. When this

field

totals

the

3742,

from

either

is

used

to

obtain entered, uses

program

updated,

the

three

control,

A field 9 and

anyone

of

O.

All

fields in which

high-order

four

capability available

offline field

totals

from

the

accumulator.

totals

an

accumulator

can be selected

feature

and

an F

is

selecting field

station

prevents

totals

or

verified.

19-digit

data

in speci-

total

of

the

256

four

bits

through

bits equal

with

feature

from

the

is

selected~

displayed totals

mode

the

use

from

may

9 .

the

to

the

on

or

of

The

the

specified accumulators. Overflow

an

accumulator

passed. Disk errors

the

field

If

AUTO REC ADV

stops,

is

displayed. Press REC ADV

played

during a field

a

mode.

At

the

retain

,reached,

changes

Mask

A mask to

process a particular

has

either

<FCCCWM 1 ,M2,M3

<FCCCNM1,M2,M3

low-order

total

and

the

and

advance

end

of

the

field totals. If

the

data

to

read

Statements

statement

of

14

digits

of

a field

is

not

indicated. Deleted records are by-

and

invalid mask

operations.

is

turned

off,

record following

to

the

totals

operation

a field

total

set

label

index

mode.

the

to

process

changes

operation,

the

end-of-data address

is

displayed,

causes a particular program

type

of

record.

the

following

formats:

totals

field are

beyond

statement

the

field

19

errors

totals

added

digits in

operation

last record processed

the

record dis-

the

mode

to

the

accumulators

is

and

the

mode

to

be selected

The

mask

statement

into

stop

update

To

perform

offline field totals:

1. Insert disk and close cover.

Load

the

2.

3.

4.

obtain

If in

record

Turn

programs

the

field totals.

the

update

to

be used in

AUTO R

and

mode,

the

EC

ADV switch

mask

position

field

record advancing.

Press

5.

FUNCT

SEL

upper

TOTALS.

The

accumulators operation the tion number. field which

begins. Records are processed

program

characters are ignored,

Field

definition

of

the

are reset

specified in

totals

fields are identified

character

three

accumulators

the

with

to

zero,

mask

except

a 1, 2,

statements

the

totals

on

and

COMPUTE

and

statements.

those

or

is

to

be used.

disk

needed

to

the

to

first

operation.

for

automatic

FIELD

the

field

totals

under

control

Field defini-

followed by a

by

following a

3 which specifies

of

The

characters

in

the

mask

meanings listed in Figure

The

mask record program tains

either

The

mask record

program

not

contain

The

& can

function.

AND

statement

is

processed by

buffer

A,

statement

is

processed by buffer

either

be

101 OWA,B,C means

the

1 if position

B,

or

C.

1010NA,B,C means

the

1 if position

A,

B,

or

used in a mask

For

example,

1001WA,B&010WZ means

by

the

field

totals

program in program

001

of

the

data

record

contains

of

the

record

contains

Z.

statement

21.

offline field

010

of

offline field

010

of

C.

statement

the

mask

that

the

an A

format

that

totals

the

data

that

totals

the

data

to

statement

data

record

buffer

or B and

have

the

program

record

the

program

record

perform

is

1 if

position

the

data

in

con-

data

in

does

a logical

processed

position

010

Field

Totals

33

Characters

<

F

CCC

Meaning

This

character as a field be

in

the

gram

buffer

The F stands through 9 or A on 3742

with acter 1 through character program statement

CCC

stands ber indicating record

that

mask.

(001 (001 - 128) 3741

identifies

totals

mask

first position

used for mask

for

the

128

6 on

indicates which field

is

to

be selected if this mask

is

satisfied.

for

a 3·digit position num-

the

is

to

080)

format

any

character

the

feature

the

position

be

compared

3742

128

the

of

every pro-

statements.

3741

or

3742.

of

or

3742

feature

program

and

must

1

or

on

the

any

char-

The

totals

the

data

with

the

If none

record, program.

Displaying

To the

ing:

1.

2.

3.

The then

To redisplay press lators lators. displayed.

of

the

mask

statements

the

data

record

is

Offline Field Total

display

the

contents

display screen while

Turn

AUTO

Press FUNCT

Press DISPLAY FIELD TOTALS.

data

currently

replaced

remove field totals

either

to

by

the

data

RESET

zero. Pressing RESET does

All

other

of

in

REC ADV off.

SEL

upper.

being displayed

the

data

that

was replaced

or

R.

keys are inoperative

are satisfied

not

processed by

Accumulators

the

field

total

field

totals

on

in

the

accumulators.

from

the

Pressing R also resets

by

the

accumulators

mode,

the

display screen

display screen and

by

the

field totals,

not

change

when

field

do

the field

the

totals

data

totals

on

follow-

is

accumu-

are

Wor

N

W indicates

record

must

in

the

mask in

be satisfied. N indicates

position

character.

M

Figure

21.

If

more

than

buffer,

each mask

colon

(;).

either a colon

the

mask program comma, period indicates program ditional program selection.

buffer. When a

the

number

M stands the This

must

Mask

Statement

one

mask

statement

The

last

(:)

or

statements

colon

is

the

followed

record position

is

called

separate mask characters.

Format

statement

character

a period (.).

are

continued

treated

end

of

that

the

position in

contain

must

for

the

must in a program

colon

as a mask character.

the

by

the

character

order

for

the

search

that

the

not

have

the

mask

character

the

mask. A

Characters

is

be

The

in

is

specified

last mask

a period indicates an uncon-

with which

is

to

be

compared.

comma

specified in a program

separated

buffer

colon

indicates

a higher

after a W,

statement.

the

used

to

record

(,)

by

a semi-

must

be

that

numbered

N,

The

A

or

Writing

After tents

record

into character specified, cified, accumulator

9 specifies

If

read order field in digits),

mainder

Example

An offline field data The the

Field Totals

accumulating

of

the

on

disk.

which

the 8 followed the

the

accumulator

the

field in

into

is

digits

the

of

set

that

field

totals

content

accumulators

1, a 5

shorter

of

record

total

the

of

into

field

To

do

this, program

total

is

to

by a 4,

accumulator

is

or

8 specifies

the

record

than

the

accumulator is

larger

is

right adjusted in

field

is

filled with zeros.

totals

operation

contains

several

operation

the

records.

Records

totals

in

can be

written

be read with

5,

6, 7,

is

not

reset. If

reset

to

accumulator

3.

that

the

accumulated

are read

than

the

is

different

to

be

performed

on

Disks

the

accumulators,

into

the

field in

the

field

8,

or

9. If 7,8,

zero. A 4

accumulated

the

to

total,

into

field

be

performed

kinds

depends

or

a field

the definition 4,

5, or 9 is 7 specifies

2,

and

total

only

the

field. If

total

and

the

of

records.

the

con-

in

the

record

or 6 is

spe-

a 6

or

is

to

the

(19

re-

on

a

upon

be low-

the

34

Figure

22

shows

for each record

first

column

second be

performed.

Depending

types

column,

of

field

in

upon

the

type.

the

total

field

totals

If

the

figure

contains

operation

type

of

operations

operation

record

in

the

record,

are

to

type

indicated by

the

data

indicated

third

column

one

of

four

performed:

be

performed

needs

different

the

by

the

to

Program positions program in program

B----------------------------

buffer 2 contains

30-35

of

the

data

buffer

N2----

~

Field

in positions

the

record

2 is:

E

totals

program

into

field

30-35

to

add

the

accumulator

field in

2.

The

1.

Add a field

2.

Add

Read

3.

record

4.

Add

Four

different

example

This

Program

positions 30-35

2. definition tor. those

In programmed as bypass fields. buffer

buffer 1 contains

To

program a field as a field

All field

used by field

this

example all fields

1 is:

B----------------------------

to

both

accumulators

the

field

to

accumulator

the

contents

buffer

the

field

programs are

used program buffers 1-4

of

followed by 1, 2,

definition

of

and reset

to

accumulator

the

data

characters

totals

fields are ignored.

except

N 1

2---

E

'-..t-'

1 and 2.

2 only.

accumulator 1 into

the

accumulator.

3.

required

record

or 3 to

program

into

totals

indicate

in

the

field

The

program in

to

do

these operations.

for

these programs.

to

add

accumulators 1 and

field, use any field

the

program

totals

the

current

the

field

accumula-

except

field are

program

in

Program buffer 3

accumulator 1 is

into positions 1 also causes in program

B 7

--------

---.-

Program in positions conditions through

buffer 4 is:

E

Field

that

buffer 4 contains

3 are

contains

to

be read into.

through

accumulator 1 to

buffer

3 is:

accumulator 1 is

30-35

of

the

to

use

the

programs in

not

satisfied.

B----------------------------N 3----

the

program

10

of

the

be

read

the

program

record in

The

E

for

The

accumulator

record.

reset

to

zero.

into

to

accumulator

program

the

record

The

program

The

add

the

buffers 1

in

program

is

program

field

3 if

that

read

the

Field

totals

positions

in

Type

of

Data

Record

2

3

4

Figure 22. Field Total Operations

field

30-35

Contents

A in position

Numbers

Blanks in positions

All records of

the

10

and B or

in

position

that

do

other 3 types

50

through

not

of

satisfy

records

C in position

55

the

conditions

25

Desired

Add

the

record

Add

the

record

the

Read into

the

reset

accumulator

Add

the

record

Operation

field in positions

to

accumulators 1 and

field in positions

to

accumulator

contents

record in positions 1-10

field in positions

to

accumulator

of

1.

30-35

2.

accumulator

30-35

3.

of

the

2.

of

the

1

and

of

the

Field Totals

35

To

cause

the

program be selected automatically, write mask mask

statement fied before a program this

example

ment

end

of statements mask

statements

Program Buffer 5

<1010WA&025WB,C

~

Selects program level 1 if position contains position

a B

begin in program buffer 5. Each mask state-

is

separated

program buffers 5

are

an A and

25

or a C.

that

is

to

indicates

by a semicolon. The

continued

follow:

10

contains

the

is

selected.

and 6 to

in

conditions

the

;2050WO,1,2,3:

---------

Selects program level 2 if position This mask continued buffer 6.

process each record

The

indicate

that

mask

colon

that

program buffer.

50 statement in

program

Each

must

be satis-

statements

is

used the

is

numeric.

is

type

at

mask

The

to

for

the

Program Buffer 6

<,4,5,6,7,8,9;3050Wo&051Wo&052WD&053Wo&:

~-

Continued from program buffer 5

Program Buffer 7

<054Wo&055WD;4.

~~

Continued

program

from

buffer

6 program level has

Selects program level 3 if positions 50-55 are blank. (The b represents a blank space.) This mask is

continued

Selects program level 4 if

in

program

not

---

statement

buffer

another

been selected.

7.

36

Chapter 8. Second Disk

Dual disk capability additional disk drive provided by On

the

3742, station the primary

The following:

1.

2.

3.

4.

5.

DUAL DISK PREPARATION

For dual disk

1.

2.

by disabling

secondary

station

purpose

Duplicating a disk in

copy

or

a defect.

Merging records keyboard.

Pooling

Extended program storage; programs can be loaded into

the

disk

without

Expanded storage

feature.

Make sure tion and mode.

On

the

and

then

in

position

2

operations

disk.

is

obtained

dual disk capability

the

secondary

stations

of

to

the

program storage buffers from

preparation,

that

secondary

press A. An A will appear in

disk

has

the

power

second disk

salvage

from

data

from

removing

for

that

a disk

the

secondary

station,

36

and

the

on

the

on

the

3741 by means

the

second disk feature.

is

obtained

station

from

the

primary

on

switch).

operations

order

data

from

a disk with records

several disks

the

use with

ON

do

the

is

loaded in

keyboard

primary

is

to

have more

a disk

primary

the

3742

following:

station

press FUNCT SE L lower

will be inactive. Disk

station

and

to

that

onto

disk.

communications

the

is

now

of

on

the

primary

controlling

station

permit

the

secondary sta-

in

the

(the

the

than

one

has developed

from

the

one

disk.

second

the

index

status

line

control

this

an

DUAL DISK OPERATION ON

After

insertion

of

any

of

disk 2

at

label.

• DISK 2 REC ADV

• DISK 2 REC BKSP

• DISK 2 RETURN TO INDEX

The

address

the

status

posted

or formed. Insertion by

the

machine and

a disk 2 address or remove an existing disk 2 address; likewise, removing disk 2 does address SEL address.

Disk 2 communications

following keys:

• DISK 2 REC ADV

• DISK 2 REC BKSP

• DISK 2 RETURN

•

to

lower and

is

COpy

The

regular search keys with

down

of

a disk

the

following

track

00,

of

disk 2

line in positions 31

changed only

be removed

the

read

but

operations

sector

is

displayed

when

and

removal

therefore

from

A key will remove

not

written

mode). Disk 2

TO

THE

3741

in

the

second

disk drive,

activates disk 2, positions

08, and displays

at

the

through

disk 2

inserting a disk

not

cause

the

on

INDEX

35.

operations

of

disk 2 are

the

display. Keying FUNCT

the

(except

is

controlled

the

numeric

AND

3742

the

sector

08

righthand end

The

address

are per-

not

monitored

does

not

existing disk 2

on

3741

in

the

by

the

shift

key held

first

of

post

is

To

return

the

3742

to

normal

1. Press FUNCT

2. Press

the A character.

SEL

lower

two-station

on

the

primary

operation:

station.

Second Disk 37

SEARCH OPERATIONS ON THE SECOND DISK

The following procedures are used

to

search

on

disk 2:

Position disk 1

3.

copying should begin. For a full disk the

disk

to

sector 01.

on

the

index track

to

the

copy,

sector

position

where

Press FUNCT SEL lower.

1.

Hold

down

the

NUM

2.

CONTENT, SEARCH. ADDRESS.

Press FUNCT SEL lower and DELETE

3.

display and key

Press FUNCT SEL

4.

the

first

using

is

always

content

the

same search mask can be accomplished

done

After content follows:

Press FUNCT SEL lower, hold

1.

and press SEARCH CONTENT.

Press FUNCT SEL

2.

COpy

Copying

SHIFT

SEa

the

search data

upper

search, subsequent searches by

upper and DISK 2 REC ADV.

from

disk 2

key

and

CONTENT,

or

and

then

down

to

disk 1.

press SEARCH

or

SEARCH

to

clear

the

address.

DISK 2 REC ADV.

as

NUM

SHIFT,

4. Position disk 2

extent

(EOE) where copying

disk

copy,

value

of

position

EOE.

to

the

to

label

the

5. Press FUNCT SEL upper;

SH I FT copying operation).

6. When copying

and

Copy

All

The primary purpose

two

or

2

to

the

sequence

the

into

tors

onto

To

copy

1.

and

simultaneously press

is

completed,

then

RETURN TO INDEX.

or

Part

of

a Data

Set

of

this function

more disks

end

of

disk 2 drive and pooling

one

all

Insert a disk in

onto

one

disk by adding data from disk

of

the

data already recorded

such copies can involve loading several disks

disk. Deleted records are

or

part

of a data

the

disk 2 drive.

set,

that

contains

is

to

label with

then

hold

COpy

press FUNCT SEL lower

is

the

work

do

the

stop.

For

the

highest

down

(starts

to

pool

data

on

disk 1. A

of

several opera-

not

copied.

following:

end

a full

NUM

of

the

from

Copy

All

or

Part

of

Disk 2

copy

This

with

last record extent the

Each record sector address; of

disk 2 will be copied All deleted records, records outside

normal

and

To

function

the

sector

is

(EOE)

start

of

the

records will be copied regardless

data

the

end

copy

disk 2

1. I nsert

Insert

2.

copies disk 2

in track

copied from

of

copy

is

copied

that

records between

of

data

to

the

disk

the

disk

the

is,

disk 1,

00

the

label

at

function.

into

the

record from track 02, sector 14

into

(EOD).

do

to

be copied from

to

be copied

where disk 1

sector located

which disk 2

track 02, sector

the

onto

disk 1, beginning

is

positioned. The

is

corresponding

of

content,

of

defined

beginning

following:

onto

in

the

extents,

at

the

end

positioned

track

and

14

of

disk 1.

including

and

of

extent

disk 2 drive.

disk 1 drive.

of at

(BOE)

Insert a disk

2.

3.

Position disk 1 begin

by

either:

a. Pressing

position disk 1

b. Pressing

REC ADV

(for pooling).

4.

Position disk 2 on

copy

Press FUNCT SEL upper;

5.

SHIFT record

6.

When SEL

FUNCT SEL lower,

FUNCT SEL lower, SEARCH EOD, and

is

to

begin

and press

in

the

copy

lower,

then

in

the

disk 1 drive.

at

the

address where

at

the

beginning

to

position disk 1

the

label

of

or

on

the

first record

then

COpy.

data

operation

RETURN TO INDEX.

Copying stops

set has been copied.

has finished, press FUNCT

then

at

the

hold

copying

ENTER

of

extent

the

end

data

set

to

down

is

to

(BOE).

of

data

where

be copied.

NUM

when

the

last

38

Copy

Up

to

a Specified Record

This function can be used

with records used

to

set.

All

but

not

copy

To

copy

following:

that

are keyed

insert missing records

records

including,

function,

except

the

specified record.

the

specified record

up

to

a specified record on disk 2,

deleted records are copied up

on

Disk 2

to

merge records from disk 2

from

the

keyboard. It can be

or

added records into a

At

the

end

is

displayed.

do

the

of

data

to,

the

Handling Disk Errors of

Disk 2

that

Occur While Copying All

Recovery

When a disk error occurs, display flashes and a numeric

line.

For

a 2, 4,

or

5 error:

the

copy

function stops.

error

is

displayed in

The

the

or

Part

status

1.

Insert a disk in

2.

Insert a disk in

3.

Position disk 1 begin either:

a.

Pressing FUNCT SEL lower,

tion

disk 1

b. Pressing FUNCT

REC

ADV

(for pooling).

4.

Position disk 2 on

copy

is

to

begin or

5.

Press FUNCT SEL lower;

SHI

FT and press SEARCH CONTENT ADDRESS and key or record

Press FUNCT SEL upper;

6.

SHI FT and press

content).

the

disk 2 drive.

the

disk 1 drive.

at

the

address where copying

at

the

beginning

SEL

to

position disk 1

the

label

on

the

search mask (either an address

COpy

is

to

then

ENTER

of

extent

lower, SEARCH EOD, and

at

the

of

the

data

first record

then

hold

down

then

hold

down

(starts

the

copying).

(BOE).

end

of

set

where

to

be copied.

NUM

or

SEARCH

NUM

to

data

posi-

1. Record

same address in this

2. Hold tinue copying.

When copying

3.

mode address recorded

For a 3 error:

1. Record

2.

copying.

3.

After date recorded

Hold

the

disk address (disk 1 and disk 2 have

copy

down

NUM

SHI FT and press RESET

is

finished, use

to

correct

the

down

the

mode

the

defective record located

instep

disk address.

NUM

SHIFT

copying has finished, use

to

in

correct

step

all sectors

1.

Termination Without Recovery

To

terminate with disk errors ALPHA index track.

SHIFT

and press RESET. Both disks

mode).

station 1 in

1.

and press RESET

station

of

the

without

recovery, hold

update

track

return

the

to

con-

at

the

to

continue

1 in up-

down

to

the

Second Disk 39

Chapter 9. Disk Initialization

All

disks are initialized before mer. Reinitializing should be avoided unless necessary; it is

required only if:

they

are shipped

to

a custo-

Sector 8 contains

HDR1 in positions 1-4

the

following data

set

labels:

The disk was exposed

1.

2.

3.

The purpose of initialization is:

1.

2.

3.

4.

After

80

blank characters. If one

the 8 second bad track will be with a zero in position 13.

positions 1 through 4,

through

78, a W of

defect

A

initialization can be used of area.

A sector sequence on

To all active tracks on a disk.

To

maximum permissible number

To write a record All

in

To write 80-character records

the

blanks each. Sector 5 contains ERMAP followed by

number

of

sector

the

first 80.

occurred

service and add

the

disk

is

needed.

write identification fields, one for each sector

write

the

bad track code

records are filled with

track 00.

track

is

written, sectors 1 through 4 and 6 contain

of

the

first bad track will be

5 with a zero in position 9,

10,

the

sector sequence code

in

position

80,

to

a'strong magnetic field.

in

one

or

two tracks.

to

take the bad track(s)

one

or

two

tracks from

other

than

the

sequence existing

in

defective tracks. The

of

bad tracks

in

each sector

or

two

in

positions

Sector 7 contains va L 1

the

volume I D

and blanks

of

each active track.

the

blank character

in

track 00.

bad tracks were specified,

in

the

11

and 12

in

positions 5

is

in

all

remaining positions

In

positions 7 and

number

positions 77 and

this case,

the

spare

is

two.

except

of

sector 5

in

out

the

in

75

DATA in positions 6-9

080

or

128

depending on

positions 25-27

01001 in' positions 29-33

73026

in

positions 35-39

01001

in

positions 75-79

all

other

blank in

Sectors 9 through following

As

that

content:

DDR1

in

positions 1-4

DATA

in

positions 6-9

Sector number

080

or 128

74001

in

positions 29-33

73026

in

positions 35-39

74001

in

positions 75-79

Blank

in

all

a final step, disk initialization checks

it

is

written correctly.

positions

26

in

positions 10-11

in

positions 25-27

other

positions

the

contain deleted records with

input specification

the

disk

to

in

the

see

40

INITIALIZATION PROCEDURE

The

disk

to

3742

be sure

be initialized

the

second

must

be

disk drive does

in

the

index

not

track.

contain

On

the

a disk.

• Bad tracks code

are displayed in

10

show

the

bad track.

that

first

have

bad

been

marked with

the

first

track;

data

line. Positions 9

11

and

12

the

show

bad

the

track

and

second

To

initialize

1. Load disk.

2. Press FUNCT

3. Key

4.

Any or volume I D blank field. quence

26). If will scan the

bad fied, initialization track

the

disk,

the

following

Volume I D in positions 1-6

Sector

sequence in positions 7-8 (normally left blank)

track

Bad

Blank in positions

Blank

L for record length

Press FUNCT

all

of no

track

code

1 in positions 9-10

track

2 in positions 11-12

for

record length

of

the

data

is

left

blank,

If

the

sector

sectors will be in

bad

tracks

the

disk

to

code.

operations

and

will

try

do

the

following:

SEL

lower,

then

data:

13-14

of

080

of

128

in position

SEL

lower,

then

in

step

3 may be left blank. If

the

volume I D will be

sequence

numeric

are listed, find When

to

the

any defective tracks

one

or

do

not

initial ize all

DELETE.

in position 15

press

the

is

left

blank,

order

(1, 2, 3,

initialization

two

bad

tracks

check

other

15

2 key.

written

marked

for

the

tracks.

the

as a

the

se-

....

operations

with

are speci-

bad

25,

• Tracks

Only encountered

If errors are displayed

was errors tion

successive retries,

tive. Initialization can be retried by specifying

in

the

bad tracks errors in more

that

showed

data

line 2 beginning in

shown

is

written space. The first ber and encou

the

third

ntered:

Missing I D field

I

CRC

C

S Deleted record

10

tracks with

not

successful.

and

occurs. If

keyed

error

in a

track

initialization

particular

those

data

of

that

can be specified

than

errors

with

three

two

characters

character

errors

is

displayed.

after

The

disk

tried

tracks

step

3. Since

two

tracks

when

checked

cursor

position 4

characters

indicate

indicates

can

be displayed;

initialization,

should

be removed

again until. a successful opera-

show

should

the

is

2, disks with

cannot

are

t.

followed

the

type

the

persistent

be

considered

maximum

be used.

DISK CHECKING

The

initialization

for

disk tracks exhibiting errors. follows:

1. Load

tracks

the

feature

marked

disk.

provides a means

with

the

bad

The

procedure

of

track

code

for checking

shown

in

Each

track

by a

track

num-

of

error

first

error

initialization

to

clear

errors

in

defec-

those

tracks

number

persistent

checking

and

for

is

a

as

of

the

When positioned unless errors were following will be displayed:

initialization process

at

track

00

and

encountered.

the

is

complete,

label in

In case

sector

of

errors,

the

disk

08

is

displayed

the

Press FUNCT

2.

3.

Press FUNCT

4.

Press

At

the

end

the

same

izing.

If petitively peated

operations

the I character

of

the

scan, a

format

as used

errors are

and

only

reported,

tracks

should

SEL

lower

SEL

lower

report

for

reporting errors

the

that

show

be considered bad.

and

is

disk

posted

DELETE

on

should

persistent

Disk

REC

the

display in

after

initial-

be

checked

errors

Initialization

re-

in re-

41

Chapter 10. Self-Check Feature

The self-check entry

in

check

digit.

and

has been

algorithms,

Self-check fields are specified in

the

following

H Modulus

C Modulus

F Modulus

G

L M-

feature

numeric

The

precomputed

modulus

characters:

Modulus Modulus Modulus

provides a

fields

that

self-check

10

or

10 11 10

skip

11

skip

10

dup

11

dup

method

contain a precomputed

digit

is

the

by

using

modulus

the

for

last digit

either

of

11.

program

checking

self-

in

the

two

by

the

use

the

field,

of

If

self-check

are:

1.

2.

Press error ter

or

Press error the

high

errors

occur,

RESET condition.

the condition,

to

backspacing

dash

order

3. Press NUM SH I

condition, high

order

(b) overscore hex

three

unlock

the

This

permits

to

correct

key

with

either

(b) overscore

hex

0,

and

FT

and

the

C,

and

(c)

methods

keyboard

entry

a preceding

shift

the

(c)

e~it

& key

the

units

exit

from

of

error

recovery

and

remove

of a new

key

units

from

to

(a)

position

self-check field.

charac-

character.

to

(a) remove

position

the

field.

remove

with

the

with

error

the

Fields

defined

when

the

AUTO/OUP/SKIP

self-check fields

defined

Fields

when

the

AUTO/OUP/SKI

self-check fields

When

dup

or

skip

the

self-check self-check switch

Blank fields

C

error

skipped

Numerals 0

values 0

by

totaled

to

the

low-order

error

backspace,

check

in

verify

in

enter

through 9 and

through

as

the

by

the

characters F and G act

when

the

by

the

characters

when

it

and

self-check are

is

performed

is

found,

and

correctly mode. mode

and

9 in

the

hex

digit value.

value zero·.

as

skip

switch

is

on

and

as manual

AUTO/OUP/SKIP

Land M act

P switch

is

off.

after turn correct

This allows a self-check field

entered

all

low-order hex digit

off

in

the

other

the

is

combined

auto

the

self-check

enter

later in verify

characters

All

switch

as

dup

on

and

as manual

in a field,

function.

AUTO/OUP/SKIP

number.

mode,

but

mode.

with

are

totaled

other

characters

fields

is

off.

fields

If a

cause a

to

be

the

are

COMPUTING

Modulus

127 digits long.

1.

2.

3.

The

10

can be

Multiply of

the

basic

by

2.

Add

the

basic

number

Subtract ending

in

difference

THE

SELF-CHECK

computed

To

compute

the

units

number,

digits in

that

the

sum

zero.

is

the

self-check digit.

position

excluding

the

products

were

from

DIGIT

for

any

modulus

and

not

multiplied.

the

10,

do

the

every

alternate

the

self-check digit,

to

the

digits in

higher

number

from 2 to

following:

position

the

For

Basic

example:

number

Modulus 11

To

6

4

2

8

compute

modulus

11,

do

the

following:

Units position and every

alternate basic

position

number

of

Multiply

Digits

not

multiplied

Add

in

number

0

ending

Subtract

Self-check digit

6 2 8

12

4

1+2+1+4+4+1+6=19

20

-19

16

1.

Assign a weighting basic

number.

etc. starting with

excluding the

Multiply each digit by its weighting

2.

Add

3.

4.

Divide this sum by 11.

5.

Subtract

The difference

For

example:

Basic

the

high-order digit.

the

products.

the

is

the

number

Weighting factors

Multiply

Add

factor

These weighting factors are 2-7, 2-7,

the

units position

self-check digit, and progressing

remainder

self-check digit.

6

6+10+12+12+10=50

to

each digit position

of

factor.

from

11.

3 4

2

4

5

12

10

the

3 2

12

of

number,

toward

5

10

the

Divide 50-;-11=4 plus a remainder

Subtract

Self-check digit

11-6=5

5

of

6

Self-Check Feature

43

Chapter 11. Communications

The

teleprocessing

allows

the another ferred

characters various

The

facilities synchronous

as

portions

IBM

using

binary

3740

enable

capability

orderly

are

transfer

communication

coded

required

of

the

Data

Entry

the

user

data

over

IBM

Teleprocessing SRL

Bibliography,

IBM

System

GA24-3090

of

the

of

data

facilities.

characters.

with

each

message

common

Teleprocessing

Summary,

System

to

send

GA24-3089

and

and carrier

IBM

3740

System

from

one

location

The

data

is

trans-

In

addition,

control

telecommunications

receive

facilities

control

to

delimit

its transmission.

binary

or

Programming Information

to

equivalent

perform exchange and

Teleprocessing Bibliography

Figure processing language

System/370 System Summary,

System/360 Programming Systems

(BPS,

OS/VS1 Planning

OS/VS1 Release Guide,

OS/VS2 Planning Guide,

OS/VS2 Release Guide,

all

identification

perform

23

lists

support

BOS,

facilities.

functions

terminations

the

publications

information

being used.

TOS,

DOS),

and

The

BSC

necessary

sequences,

and

appropriate

GC24-3420

Users

Guide,

GC24-5092

GC28-0600

GC28-060

adapters

to

disconnect

that

GA22-7001

used

by

establish line

send

and

receive

procedures.

contain

to

Summary

GC24-5090

1

the

detailed

system

the

3740

connections,

data,

tele-

and

Figure

44

IBM

3740 System Summary Installation Planning,

GA21-9152

IBM

3740

tem Programmer's Guide,

GC21-5071

General Binary Communications,

GA27-3004

23.

Teleprocessing

Data

Entry

and

Data

Entry

BSC

Information

Synchronous

Bibliography

System

Sys-

DOS/360

DOSNS

as

OS/VS1

GC27-6980

as

Guide,

OS/VS1

Programming Guide,

BTAM

and 2 BTAM

TCAM

GC30-2024

and 2 TCAM

Reference Manual,

Reference Manual

I

GC30-5001

GC27-6978

GC30-2004

Reference Manual,

and

Programming

Reference Manual

GC30-2034

and

PROGRAMMING SUPPORT

Communications

with

System/360-370

can be via an:

Teleprocessing programming the

3741 Model 2

by

the

following access

operating systems:

System/370

DOS/VS BTAM OS/VS1 BTAM OS/VS2 BTAM OS/VS1 TCAM (level 4) OS/VS2

In

addition

can

communicate

3747

The support System/360-370 is

transparent

BSC2 in

Because

TCAM (level 4)

to

this

Model 2.

3741 Model 2

which exists in

through

the

previously listed access

of

this capability,

programming

with

either a 3747

is

transparent

System/360-370

OS BTAM

the

device classes

the

provided:

System/370

DOSBTAM OS BTAM OS

TeAM

(level 5)

support

System/3

RPG

support,

to

the

and

TeAM.

methods.

following

System/360

DOSBTAM OSBTAM OS

TeAM

will be provided

methods

Disk

and

Systems

II

the

3741 Model 2

with

BSCA

or

teleprocessing

DOS BT

The

of

support

3741

BSC1

AM

Model 2

and

is

(level 5)

for

another

and

•

IBM

2710

Data

Adapter

•

IBM

2703

Transmission

•

IBM

3705

Communications

In

addition,

communication

place via an Integrated

In

BTAM and TCAM,

BSC2 depending

facility

is

designation

is

blank

and cations

The for

specifications.

3741 Model 2

point-to-point

switched facilities.

on

being used.

is

BSCA

in

the

remote

is

communications

whether a nonswitched

Operation

serial-by-bit, serial-by-character.

Unit

Control

Unit

Controller

with

System/370

Communications

the

on

In

the

terminal

System/3

designation

RPG II,

file description specification

device field

supported

as a

standard

on

is

half-duplex,

The transmission using EBCDIC directly as line

code.

Networks

The

3741 can use a switched

point-to-point

communication.

or

nonswitched"

See Figure 24.

can

Adapter

is

or

switched

the

terminal

of

the

telecommuni-

BSC terminal

switched

synchronous,

BSC allows

the

communications

network

take

(lCA).

BSC1

or

non-

data

or

for

Point-to-Point Nonswitched

3741 Model 2

Point-to-Point

Switched

Network

3741 Model 2

Figure 24.

Point-to-Point

Telecommunications

Network

Modem

Networks

~

Modem

~

3741 Model 2 3747

or

3741 Model 2 3747

or

3741 Model 2 3747

or

Communications

or

CPU

45

Nonswitched Common Carrier, Voice Grade

A nonswitched, cated,

private,

the

3741 Model 2 with processing unit). On a nonswitched are physically communication

determined

mitted over

connected,

Switched Common Carrier

A switched

cate

with many dedicated by access lines

their

respective locations. A

path

is

established

of

time

in which data transmission takes place. The connection of

the

remote

Communications

The 3741 Model 2 operates appropriate

• Switched common-carrier network 2400

bps.

point-to-point

or

leased communication .lines

the

connected:

network consists

remote

terminal

that

is,

the

lines are continuously established

time

periods during which

the

lines. Since

no

dialing

network

allows

other

communication

to

the

terminals are

is

required.

the

3741 Model 2

terminals

or

CPUs

lines. The terminals are

common

carrier exchanges servicing

complete

between

is

established by dialing the

terminal

terminals only

or

CPU.

Facilities

in

half-duplex

modems over

the

following networks:

of

that

or

CPU (central

network,

the

circuits making

data

may be trans-

continuously

to

communi-

without

and

continuous

for

the

telephone

mode

via

at

1200,

2000,

dedi-

connect

terminals

up

for

pre-

requiring

connected

data

period

number

or

• Nonswitched common-carrier, voice-grade, private-line data

channels (or equivalent privately

at

1200

or

2400

bps.

owned

facilities)

the

The

modem

by I

BM,

identical

face

must fied by EIA patible with ment nated

circuits described

required

the

common

on

both

conform

Standard

the

is

made via a

by a 25-pin

by

the

3741 Model 2 may be supplied

carrier,

ends

to

or

the

customer

of

the

network.

the

electrical characteristics as speci-

RS-232C

and

be

operationally

3741 Model 2 modem interface. Attach-

modem

in

interface cable

connector

plug.

RS-232C are used by

2:

Connector Pin

1 AA Protective

2 3 4 5

6

7

15**

17**

20 22

**Used

modems.

Additional modem-interface information your I BM

representative.

Communications

RS232C Designation Circuit Description

BA BB

Transmitted

Received CA Request CB CC AB

Clear

to

Data set ready

Signal return)

DB

Transmit timing

DD

Receiver signal

timing

CD

Data terminal

CE Ring indicator

only

when operating with

Throughput

and

The

modem

that

is

termi-

The

following

the

3741

ground

data

to

send

ground

signal

(common

element

ready

synchronous

is

available from

must

inter-

com-

Model

be

Note: The grade

tioning

The

must

private-line channels may be half-duplex

point-to-point. Although

of

channel

be as specified

the

and

type

by

the

modem

3741 Model 2 half-duplex mode, duplex private-line facilities are recommended publications, General

Communications,

Systems Sum,mary,

pertaining

46

to

minimize line-turnaround times. Refer

Information

GA27 -3004, and

GA24-3090,

to

communications

Binary Synchronous

IBM

for

additional information

facilities.

of

channel condi-

supplier.

or

duplex,

operates

to

Teleprocessing

in

the

Figure

25

illustrates be processed per facility, and

modem

the

typical

minute

as a

speed. Actual

by:

• Record sequence

• Modem

type

turnaround

used

on

the

strapping

• Disk latency (rotational

advance

to

the

read head)

number

function

disk

time

required

of

throughput

options

records

that

record size, line

is

affected

for

the

record

can

to

Facility - Nonswitched

Baud Rate -

2400

bps

260

r---

L.

.

'4/

Nok

:

-n\:~

IS:

-n

~

c

lft~

n

[\

r'r

loc,~'-

(i

,;,.,

.

J.x..

.

Records/ Minute

Facility - Switched

Baud Rate -

2400

bps

240

220

200

180

160

140

120

100

80

120

[\

40

\

'"

I

50

,

"

'",

"~

'\

'"

!

I'

60

...

. ,

~

I"'"

........

70

Characters/R ecord

80

''"''

"

\

-

--

90

100

ro'-

........

r--

'"'

"

--

110 120

-

..............

"'-

128

Transmit

Receive

Figure 25 (Part 1

--

Records/ Minute

-

---

of

3). 3741

110

100

BSC

Throughput

90

80

70

60

50

"

40

"-

50

"-

"

...

"

~

i",_

.....

"

............

'"'

\

.......

..............

t'-_

~

--

r--

~

r---

\

60

70

80

Characters/Record

90

100 110

120

Communications

128

47

Facility - Switched Baud Rate - 2000 bps

Records/ 70

Minute

100

90

80

60

~

"'"

"' ...

[~

.............

""

\

r-......

...........

....................

-r--..

r-

...

~

r--...

r--

I"'"--

,

Facility - Nonswitched Baud Rate - 1200 bps

Records/ Minute

50

40

130

120

110

100

90

80

70

60

40

1\

\

,

'\.

'\

~

50

~

'"

60 70

\

\.

'\

1\

"-

\

I

,

'"

80

Characters/Record

~

"

""""

"

,

90

..........

~

100

r-.........

"""

110

r---.......

""

1\

120 128

-.......

r-..........

r---

50

40

Transmit

Receive

Figure

48

25

---

(Part 2

of

3), 3741 sse

Throughput

I

40

50

60

70

Cha racters/R ecord

80

90

100

"

110

120 128

Facility - Switched

Baud Rate -

Transmit

Receive

Figure

25

____

(Part 3

1200 bps

of

3). 3741 SSC

Records/

Minute

---

80

70

60

50

40

30

Throughput

t--...

40

'"

"'''

50

.........

..........

\

,

60

r-.....

~

r............

'1"-

\

70

80

Characters/R ecord

t"-,,-

90

r----

1'--

100

r--

\

110

r---

r--

120

r-

128

Throughput mode mers desiring ing those parameters (where appropriate) available

3741 Transmission Modes

The 3741 can transmit

the

information on a disk, or

part

of

the

disk. The 3741

transmit.

single

Y+--------Transmit

~--------

~----:rransmit

....

--------

is

due

to

the

throughput.

a disk and

All

or

multiple

particularly affected while

disk read check after a disk write. Custo-

to

optimize teleprocessing should

all

the

information

then

cannot

transmit

data

transmit

receive information

receive information and

and receive segments can consist

sets.

Receive

----;~~I

t(~--

One Disk

the

---------~

Receive

--------~~

in

the

receive

try

adjust-

to

achieve best

on

a disk, receive

information on

on

the

rest

then

----

of

...

,..-1

...

~

With

the

second disk feature,

with

one

disk are available with However, when operating mode and transmitting from disk 2,

continuation

t=

Transmit

t

,t(

*This

data

FEATURES

of a previous

Disk 1

Transmit

Receive

,-

Transmit

must be a

3796

continuation

the

in

the

combined

data

set

r

*

Records Maximum

of

the

same

two

the

on

disk 1:

Receive

~

..

data

functions

disk system.

data

~

offered

transmit/receive

can only be a

Disk 2

Receive

I

-----

set

on disk 1.

~-

~

..

,.

---

----..

......

~MI

f,z;"'"-----1898

Records Maximum

-----~~~I

Synchronous

The synchronous clock feature provides business machine clocking The

bit

used only when clocking. The terminal cating with clocking.

Clock Feature

of

the

data

onto

and

rate for this feature

the

attached

that

must

also be equipped with business machine

off

of

the

transmission line.

is

1200 bps which should be

modem

the

does

not

3741 Model 2

Communications

provide such

is

communi-

49

Terminal Identification Feature

The

terminal identification

terminal identification sequence and

identification

sequence with a keyed-in sequence.

feature

transmits

compares

a 4-character

a received

Transmitting the Terminal Identification Sequence

The

BSC terminal sequence a line bid

If

the

a switched

is

the

when

on

3741

network

following sequence:

transmits

initiating a line bid

a switched

is

the

network.

calling

after a connection

PPPSS

a 4-character identification

or

when responding

station,

the

first transmission

has been established

EP

to

on

AAAYYTABCNA

If

the

3741

is

the

receiving a line bid

DDDNN

called

station,

is

the

following sequence:

QD

the

first transmission

after

PPPSS A P

AAAYYTABCCOA

If

the

terminal

following

is

not

sequence

DDDNN

prepared

is

transmitted:

PPPSS

K D

to

receive a line bid,

NP

the

AAAYYTABCAA

DDDNN

The

terminal

A 3-character sequence will be a factory-installed sequence assigned by

of

sists set

with

ACK, OLE, NAK, SYN, ETB, US, NUL, DEL,

type

I

BM

characters

the

exception

character T is

from a master

from

all

positions of

of

SOH, STX, ETX, EOT, ENQ,

KD

the

lowercase v

list. The master list con-

the

(hex'

EBCDIC

and

code

EO.

A5').

The

operator sequence mode. A sequence with

the buffer last

character

first position, indicating

keyed, identification sequence

transmission terminal identification cursor characters have been keyed, an

FUNCT

After

the terminal pressing The

keyed ferred sequence cations

When sequence the

operator

the

response

or

receive response sequences

up

bid

When

identification sequence to

the the

terminal gives a positive response

mit

or

the

terminal does

for

a valid sequence.

Operator

keys

the

remote

while

the

station of

first

character

and

the

cursor

of

the

BSC terminal accepts

or

reception

is

left in a position indicating

SEL

and

COMM

identification sequence

is

placed in

FUNCT SEL, COMM,

remote

to

another

is

mode.

the

terminal

of

data

is

do

to

14

the

terminal

operator

receive

terminal identification

buffer

stored

as long as

is

the

response

keyed sequence. If

is

positive, blocks. If

negative,

not

match,

times before disconnecting.

is

keyed

data

blocks. If

not

is

in

up

to

15

in

position 1

in

the

that

of

up

of

data

feature

are pressed.

one

of

the

and

erased

the

calling

to

its I ine bid

the

terminal prepares

the

terminal disconnects. If

the

called

of

the

sequence. If

respond,

Identification Card Reader

terminal

the

characters

no

to

were

error

communication

and

sequences

terminal

station,

received line bid

the

but

identification

update

or

must

of

the

current

position followi

the

cursor

is

characters have been

any

remote

15

characters,

occurs as

not

that

is

completed,

the

from

terminal

station,

the

sequences

the

sequences

does

terminal

though

installed.

more

displayed

desired

sequence

the

is

in a

the

identification

is

compared

match

retransmits

the

remote

sequences match,

and

prepares

do

continue

Feature

read index

be positioned

record

ng

the

left

in

the

and

the

If

the

than

15

after

the

BSC

modes by

mode

key.

is

trans-

display. This

communi-

with

match

and

to

transmit

and

the

its line

terminal

is

compared

to

trans-

not

match,

to

look

Remote Terminal Identification Compare

This

function characters the

communications

data

begins matches

the

keyed sequence.

as

50

compares

to

a terminal identification

after

character

an

line.

The

the

received terminal identification sequence

for

character

operator

transmission

and has

keyed

sequence

received

or

reception

the

identical length

of

on of

This

feature

and

transmit

to

accept passed if terminal.

When

the letter B is tor

must

reader.

the

terminal

action

is

used

to

the

information

only

valid sequences. This

the

3741 terminal

displayed

then

After

recorded

the

card has been read,

is

ready

and

read an

to

the

operator

to

a CPU

is

transmitting

is

in

one

of

to

the

mode

identification card

transmit;

if an

card may

identification card

that

is

programmed

feature

the

be

can be by-

to

transmit

indicator.

into

the B is

error

is

read again.

another

modes, a The

the

erased

detected,

opera-

card

and

no

(

Keylock

This feature

In

used and

Feature

controls

the

locked position

in

the

use

communication

unlocked position it can be used. terminal can also be locked mitting once used removed,

communication

the

3741

is

to

permit re-entry. Also, if

with a

removed

communications

of

the

communication

mode

in a communications

remote

from

mode

terminal. However,

COMM,

the

first or second disk

is

discontinued.

cannot

key

mode.

be

The

3741

mode per-

must

be

When

the

3741

is

in

transmit

the

telephone line

mit

data

from

The

procedure

ting

one

or

sires

to

start

is

disk, he can position set

with normal key

start

the

transmission

through

the

disk

in

the

two

disks in

transmission

entry

previous paragraph was for transmit-

the

of

mode, it can be

modem,

to

the

remote

their

entirety.

from

disk

to

and subsequently trans-

location.

any position

any record

If

the

connected

operator

on

of

any

operations, and subsequently

data

from

that

point.

the

to

de-

first

data

OPERATING PROCEDURES

An overview

of

the

general operating paths

Figure 26. Procedures pertaining

depending on

Figure 27 illustrates

CRT display

COMMUNICATION MODES

Figure

data

sets

further

the

status

28

summarizes

in

the

explains

modem

the

type

status

indicators displayed

line during BSCA

the

effect

various BSCA modes. The following

the

individual BSCA modes.

Transmit Mode (T)

The

transmit

disk

or

a

remote mitted, an mit

mode A T will display

mode will be used

two

disks (if

the

second

location. After loading

operator

can place

by pressing FUNCT

then

to

indicate

be displayed

the

on

transmit

the

SEL

the

to

modem

installed.

operation.

of

disk label

to

transmit

disk feature

the

disks

3741 terminal

upper, COMM,

status

line

mode.

is

shown

in

keys may vary

on

status

on

data

from

is

installed)

to

be trans-

in

a trans-

and

of

the

CRT

the

one

to

T_

If transmission occurs with the

display's mission. parency error occurs,

status

mode indicator

status

line

to

If

a disk error, invalid

TI

will be displayed in

line

to

indicate an incompleted transmission.

is

TT

or

TI,

answer a telephone call. If

(as

it

would if a line check,

aborted

call and will

place

If not

since this unique

error occurred),

as

the

customer

write as

retransmit

original call.

intends

data

a %

character

condition

the

to

diagnostics procedure.

no

errors, a

indicate a

data

the

3741 will

the

mode indicator remains T

remote

the

3741 will answer a

data

use any

in

is

reserved for initiating a BSCA

TT

completed

set label,

abort,

beginning

transmit

position 1

is

displayed

trans-

or

a trans-

the

display's

not

automatically

or message

telephone

at

the

mode, he

of

sector

same

on

If

the

must

01001

Communications

51

Start

Loado=l

Position of or First Record

Turn Keylock

to

Data Set

Start

Label

Yes

No

On

No

52

Key

FUNCT

COMM

Figure

Remote I D

SEL

Upper and

26

(Part 1

of

3).

Operator

Procedure Overview

(

Key M

Transmit Mode T

Transmit

Transparent Mode P

Transmit/ Receive Mode B

Insert Card

Transmit/

Receive

Transparent

Mode

0

REC

ADV

Receive Mode R

Procedure Complete

Figure

26

(Part 2

of

3). Operator Procedure Overview

Push Auto Answer Button

on Modem

Procedure

Complete

Communications

53

Yes

Push

CPU/3747/3741

No

Talk

Button

Dial

Remote Gets

Including

Ready Push

Data

Button

Auto

No

Yes

Push Data

Button

Procedure

Complete

Figure

26

(Part 3

of

3). Operator Procedure Overview

54

Status Indicators

BSCA

Mode

Communications Transmit Transmit-Transparent

Receive R Transmit/Receive B T Transmit-Transparent/ Receive D T

Mode

Col 38 Col 39

~

C

T

P

~

T

t

C C

C

J

Transmission Complete

Transmission Incomplete

Reception Reception Incomplete

Note: During

that

is

used by

Figure 27. Status I ndicators on Status Line

Disk Data Set Label

HDR1

Label:

Must have a 1

-

Must have valid extents and record length

-

Must be accessible

-

Must

-

Bypassed

-

not

Must

not

Must have a 1 Must be accessible Must

not

Must have a

in

be deleted be bypassed

Label:

in

be deleted

"B"

position 4 of label

position 4

in

column

of

41

label

~

Complete

BSC

operations, line 6 of the CRT displays diagnostic information

the

Customer Engineer during trouble calls.

-------------

-----------------'

Transmit

Will transmit

Will

not

transmit

of

CRT

Display During BSCA Operations

. Receive

Will receive transmit

Will Will

receive transmit

Transmitting Receiving

Will

not

On Disk 1

.....

Transmit/Receive

Will

not receive because it was disk trans-

mitted

Will

receive

last

after trans- .

mitted

data set

On Disk 2

Transmitting

Will

transmit continuation from previous transmitted

Will

not

transmit

Receiving

if

Will after

data set

Will

receive

last

HDR1

Deleted/Non

The label

-

a 1

Figure 28. BSCA Modes

in

position 4

is

Label:

deleted or does

not

have

Will

not

transmit

Will

not

receive transmit

not

Will

not

receive

Will

not

trans·mit

Communications

Will

not

receive

55

Transmit-Transparent

The

transmit-transparent communications data.

After 3741 in a SEL

upper,

the

status

transparent

mode

This

with

the

exc.eption

mode.

PI

lines all

loading

the

transmit-transparent

COMM, and

line

of

the

mode.

of

operation

that

indicates an incompleted

mission; PT indicates a

Receive Mode (R)

The

receive

mode

is

used location the

disks,

and

store

second disk

an

operator

that

feature

can pressing FUNCT SEL then

be

displayed

indicate

The

3741

the

can through a modem remote

location

receive

ttJen be

and

on

mode.

and

Mode (P)

mode

256

EBCOIC

disks, an

P.

A P

CRT

display

is

identical

data

is

completed

to

receive

data

on

is

installed).

place

the

upper,

COMM,

the

status

connected

subsequently

store

it

on

is

used

to

bit

operator

transmit

combinations can place

over

the

mode by pressing FUNCT

will

then

be

to

indicate

to

the

transmit

transmitted

in

transparent

data

from a remote

one

disk

or

two

After

loading

3741 in receive

and

R.

line

of

the

CRT

to

the

telephone

receive

data

the

disk(s).

displayed

the

transparent

transmission.

An R will

transmit-

mode

trans-

disks (if

the

mode

by

display

line

from

on

the

as

to

The

labels

for

the

data

set

to

be

received

HOR1

(or

bypassed) labels

BSCA

feature

Record Length: The record length

length was positioned

selected

on

a record

mined

will

modify

of

the

first

record received in

on

the

communications

within

the

by

the

record length specified in

the

data

mode. If

data

and

must

following fi.elds

set

label

set,

the

label.

Beginning

not is

made data 29 operation.

End

equal

End

end received. In are made equal

changed

equal

set

for

summary

of

Extent:

to

of

Data:

of

extent

of

Extent:

on

the

to

the

all succeeding

of

)

The

the

record address

The

plus 1,

this

case,

to

the

The

label

end

extents

end

of

except

the beginning

beginning

of

the

first

of

data

(EOO)

data

sets received. (See Figure

generated

of

extent

of

the

data

(EOO)

when a null

end

of

must

not

be

is

determined

the

data

when

the

disk was

record length

the

corresponding

of

extent

data

set

of

the

during

(EOE) address

last

recorded

is

made

data

and

end

of

extent

address.

be

valid

deleted.

of

the

from

set

if

operator

positioned

is

(BOE)

received

record.

equal

set

is

of

extent

The

label:

the

deter-

mode

is

made

to

the

disk

is

and

the

Oata records received with

transparent

received in

First received

mode; records received with a OLE STX are

the

transparent

data

an

STX are received in

mode.

set

on

BOE

of

the

label BOE +

the

non-

EOD

first disk records received

data

sets

Succeeding first

or

second disk

data

first

set

or

second disk

First

a

transmitted

on

First received

on

second

Figure 29. 3741 Model 2 Generated Extents

disk

on

following

data

set

data

set 01001 BOE +

Previous EOO BOE +

records received

Previous EOE + 1

BOE +

records received

records

while

in Receive Mode

Multivolume Indicator:

first disk overflow multivolume

L

to

other

number

is of

indicate

label

information

of

changed

the

first disk indicator the

last disk

EOE

EOO - 1 (if null

to

set, EOO)

number

of

EOO - 1 (if null

set, EOO)

number

r·eceived

of

EOO - 1 (if null

ECJO)

set,

EOO - 1 (if null

set, EOO)

The

multivolume

a C

(continued

is

written

of

the

second disk

of a continued

is

left

unchanged.

data

on

data the

is

data

indicator

set)

when

second

changed

set.

of

disk.

to

All

I

the

The

an

(

56

If

the

operator

any

position

the

disk

to

any record

entry

operations,

recording

If RC

completed

If a disk

displayed

one

or

is

displayed

data

two

reception

error

on automatically indicates correct

RC

or

bypass

data.

If

the

mode

remote

abort, will answer a ning

at

the

same place as

Note:

STX

STX (when parent

text

will be

deleted

not

prohibit

text

even

though

text

desires

to

start

recording received

on

the

first

disk,

the

of

any

data

and

subsequently

from

that

disk

position.

disks

of

data

are received

on

the

display's

of

data.

occurs

or

if

the

disk(s)

the

display's

answer a

or

RJ. The

the

indicator

or

wrong length

telephone

or

DLE STX in

not

immediately

status

telephone

operator

error

condition

remains R (as it would if a line check,

check

call

and

the

original call.

non-transparent

preceded

will be recognized as

from

the

text.

Other

the

transmission

such

of

characters

operator

set

with

start

receiving

with

status

line

is

full,

line.

The

call if

the

must

intervene

to

continue

occurred),

will receive

by a DLE) in trans-

control

these

are

characters

BSC

products

control

not

supposed

data

can

position

normal key

and

no

errors, an

to

indicate

then

RJ will be

3741

will

mode

indicator

and

receiving

the

3741

the

data

text

or

and may

characters

to

from

a

not

begin-

DLE

be in

in

When

the

3741

has received all

it,

it

will display

and

reception

If a disk the

error

transmission cate a BI status

line. If a disk

during

the

is

indicated in

BJ

display's

rect

If remote

the

or

mode

status

bypass

abort, will answer a beginning indicator abort,

or answer a at

The

telephone

the

same place as

receiving

telephone

same

telephone

tion

with

BC

to

of

data.

or a transparency

portion

in

the

mode

indicator

error

receive

portion

the

mode

line.

The

the

error

indicator

or

remains B (as

message

telephone

at

the

same

remains BT (as

wrong length

call

the

of

data

can

call.

The

receiving

caIJ

only

a CPU.

indicate a

of

or

of

operator

condition.

aborted

call

place as

it

would

check

and

original call.

occur

when

Transmit-Transparent/Receive

of

the

completed

error

this

mode,

position

a disk full

this

mode

indicator

must

it

error

and

will

retransmit

the

original call. If

if a line

occurred),

will receive

on

the

of

data

the

3741

Mode

data

transmitted

has

occurred

the

3741

of

the

condition

of

operation,

position

intervene

would

occurred),

check,

the

data

same

can

take

is

in

(0)

transmission

during

will indi-

display's

occurs

a

of

the

to

cor-

if a line

the

data

the

check,

3741

mode

remote

3741 will

beginning

or

subsequent

place

on

communica-

to

the

Transmit/Receive

The

transmit/receive

data

and

receive

loading

the

transmit/receive

COMM,

status

The

line

3741

and

to

can through a modem. will be

transmitted

index positions

Mode (B)

data

disk(s), an

mode

B.

A. B will

indicate

then

be When beginning

of

disk ble transmission. A C allow two. the

display's

For

the

last

73026.

Now

data

the

same

as

for

transmitting

A BT

first received

label

data

The

can be received

or

the

receive

the

is

indicated

status

line indicating a

is

set

to

set

transmitted

BOE

of

subsequent

mode.

mode

of

without

operator

by

pressing

then

be displayed on

the

transmit/receive

connected

the

connection

with

one

have

in

the

multivolume

continuation

in

the

data

set,

one

more

unless

disk

two

and

telephone

operation operator

can

intervention.

place

FUNCT

to

the

telephone

the

first disk until all

been

interrogated

of

the

mode

indicator

completed

the

beginning

than

the

last EOE

is

always forced

recorded

on

call in

is

used

the

3741

SEL

the

mode.

has

been

indicator

data

position

of

end

of

the

same

to

transmit

After

in a

upper,

display's

line made,

data

for

possi-

will

set

on

disk

on

transmission.

extent

of

extent

of

is

equal

to

01001.

disks

on

manner

The

transmit-transparent/receive

to

transmit

without

After

in a SEL the

display's

data

in

the

transparent

operator

loading

intervention.

the

disk(s),

an

operator

transmit-transparent/receive

upper, COMM, and

status

line

D.

to

indicate

A D will

receive mode.

mode

of

This mode

with

the

transparent

mode.

corresponding

operation

exception

to

is

identical

that

DT, DI, DJ,

BT, BI, BJ

data

and

receive mode.

COMMUNICATIONS EXAMPLE

Figure

30

iIJustrates

drive 3741 Model 2 this

example,

to

the

remote jobs) are and for

to

be received

00012 have

the

two

printer

two

CPU

been

the

status

before

key-entry

and

two

from

set

up

job

data

of

teleprocessing

data

additional

the

(via bypass

sets.

mode

of

operation

mode

and

can

place

mode

by

pressing

then

be

the

transmit-transparent/

to

the

transmit/receive

is

transmitted

and

DC

have meanings

BC

in

the

transmit/

a disk

on

a single disk

is

initiated.

sets are

to

data

sets

be

is

receive

the

3741

FUNCT

displayed

in

the

transmitted

(printer

CPU. Disk labels 00011

status)

to

be

used

data

on

In

Communications

57

Disk Capacity

1898

19 Labels; Track

Sectors

08-+-26

Records

00

-----

Key

Entry Programs Key Entry Key Entry

Job Job

#1

#2

~~~~~~~~~~~~~~~==============================~

w

o

IlJ

Label Address

Status

Label

Beginning

End

Figure 30.

Figure receive mode teleprocessing function was completed. Note that the

disk

LINE

of

Extent

(BOE)

of

Data (EOD)

of

Extent

(EOE)

BSe

Transmit/Receive

31

illustrates

key

entry

without

TERMINATION AND ERROR CONDITIONS

the

status

programs (for example) may be

being affected by teleprocessing.

00008

. Bypass

01001

01020

01026

Example (Before Teleprocessing Initiated)

of

the

disk after

00009

HDRl HDRl

03001 18001

14017

16026

the

transmit!

stored

on

00010

30008

32026

00011

Bypass

01001 01001

01001 01001 74001 74001

73026 73026 73026

data and end the following conditions:

• If a disconnect sequence

1. The mode

2. The mode

• If a disconnect

00012

Bypass

of

extent

is

has occurred.

timeout

00013

Deleted

74001

are

updated

is

R,

RC,

RJ, BJ,

has occurred and either:

(see Figure 29) under

received and either:

BT,

BC,

DT,

or

DJ; and a disk full

or

DC.

00026

Deleted

74001

-

73026

error

Termination

On

switched lines, a

nect

sequence

or

when RESET

out

of a communications

58

of

the

Data Call

data

call

is

terminated when a discon-

is

received, when a disconnect

is

pressed. Pressing RESET

mode

of

operation.

timeout

takes

the

The

end

occurs,

3741

of

The mode

1.

The mode

2.

has occurred.

is

R,

is

RJ, BJ,

RC,

BT,

BC,

DT,

or

DJ; and a disk full

DC.

error

Disk Capacity 1898 Records

~

.,.---

Key Entry Programs Key

Entry

Job

#1

Key

Entry

Job

#2

.----

Printer Pri

nter

Job Job

#1

#2

00010

HDR1

18001

30008

32026

w

o

w

o

W

OW 00

UJW

W

o

19 Labels, Track

Sectors

Figure 31. SSC Transmit/Receive Example (After Teleprocessing Completed)

08~26

Label Address

Label

Status

Beginning of

End of Data (EOD)

End

of

Extent

00

Extent

(EOE)

(BOE)

a:l

00008

Bypass

01001

01020

01026

00009

HDR1

03001

14017

16026

o

a:l

00011

Bypass

33001

46013

46012

00012

Bypass

46013

63025

63024

00013

Deleted

74001

73026

---

w

o

a:l

00026

Deleted

74001

73026

If

the

mode

is

T,

P,

R,

B,

BT,

or

DT,

the

at

the

original position before transmission or reception

took

place, and

answer a telephone call if it

the

mode

DC,

the

modem

call.

BSCA Error Conditions and Indications

Characters error indicator position

the

modem

is

TT, TI, PT, PI,

is

not

conditioned

in

parentheses indicate

of

is

conditioned

is

in

an

auto

RC

RJ, BI, BJ,

,

to

what

the

display's status line.

disk

is

positioned

to

automatically

answer mode.

BC,

01, OJ,

answer a telephone

is

displayed

in

the

If

or

Transparency Check

This error condition occurs when

(T) or a transmit/receive ing characters ENO, ETB, ETX, ITB, STX, ENO

in

place

follows the response with an EDT.

is

of

read

the

(T)

(B)

mode, and

from

disk: SYN, EDT, OLE, NAK,

or

SOH. The 3741 sends

data

link control character, and

the

3741

one

Communications

is

in a transmit

of

the

follow-

then

59

Line Check (C)

A line

check

occurs

bid

timeouts

transmitting

switched

is

on

toring

or

lines, it

nonswitched

the

line for line bids.

when

on a switch

receiving

disconnects

lines,

seven receive

network

of

data.

from

it

goes

into a control

have If

the

timeouts occurred

3741

is

line. If

mode,

or

during

on

the

151ine

the

terminal

moni-

BSCA Disk

If

any

of

the transmitting an

EOT:

•

Read

• Write

Errors

following disk

or

receiving

errors

data,

it

occur

will

when

abort

the

by

transmitting

3741

is

Remote

A sequence

block,

transmission

On

3741 switched timeout

Abort

remote

abort

is

or

following a

nonswitched

to

go

lines, a

causes

(R)

occurs

received as a response

response

block

that

or

switched

into

control

disconnect

the

3741

line.

Message

A message

Aborted

aborted

(Q)

condition

negative responses have

same

data

transmission

following

Received Line

Whenever

line bid

a terminal

received

the

fourth

Bid

the

3741

when

in a responds line bid

negative response.

(V)

is

RJ,

with

indication.

when

an

EOT

or a disconnect

to a data

sent

after

did

not

end

with

lines, an

mode,

sequence

to

disconnect

occurs

been

received as responses

block.

in

the

control

BJ,

OJ,

EOT

monitoring

or a disconnect

after

The

3741

mode

TI,

BI, DI,

a negative response

transmission

receiving a

ETX.

causes

for

line bids.

from

the

four

consecutive

sends

an

and

has received

or

PI

and

data

the

telephone

to

the

EOT

mode,

indicates

On

the

a

• Length

• Seek

No

record

•

found

BSCA Setup Error (H)

This

error

condition

mode

is

selected

•

The

terminal

positioned

•

The

keylock

BSCA Disk(s)

This

error

results

ID

past

is

Full

results

and

one

feature

column

locked.

(D)

from

one

• Whenever all available recorded

• Whenever

• Whenever mitted

into.

no

val id

data

the

last

data

and a continued

when

of

the

is

installed

16

of

record

set

of

data

the

following

of

the

following

positions

labels

the

set

is

current

exist

transmission

communications

conditions

and

the

cursor

record

buffer.

conditions:

have

been

to

receive

is

trans-

indicated.

exist:

is

into.

Wrong-Length Check (W)

Whenever data characters, ent a wrong-length to

set

length

the

3741

has received

with

zero

characters

or

has received succeeding

within

the

check

data

block.

same

and

the

or

with

data

set,

transmits

first

more

the an

Negative Bid Response (X)

Whenever

nect

terminal

60

the

sequence

indicates

3741

receives a negative

as a

response

to a transmitted

a negative bid response.

data

than

data

blocks

terminal

EOT

as a response

response

block

128

of

indicates

or

discon-

line bid,

of

a

differ-

the

Data Set

Whenever

has

been

Not

the

lost,

error.

Operator

Whenever tion,

Initiated

an S is

the

displayed

mitting a status

Ready (I)

3741

detects

the

terminal

Termination

reset

key

message.

that

the

indicates a

(S)

is

used

to

temporarily

data

set

data

terminate

while

the

ready

status

set

not

ready

a BSCA opera-

3741

is

trans-

BSCA Received Data Block (U)

Status

Message

Format

This error results when a and

the

3741

is

in

transmit

Sector

and

sector the

DTwith

abort

Indicators

number

following meanings:

Track and

The

track

status

line has

Modes

T,B,P,D

TT,PT

R,

BT, DT

R, BT, remote error condition;

RC,BC,DC

RJ, BJ, OJ with

disk full error

remote

station

mode.

indicator

I ndicates Address Position of:

Next record

ledged record

00026

or, if

continued,

mitted

from

00026

on

ledged record received.

Label

of

the

Label

of

the

if

the

remote

a

3747.

sends a

on

the

after

the

transmitted.

the

last

data

the

last record trans-

disk 1. Always

disk 2.

after

the

last

data

last

data

terminal

data

display's

last acknow-

set was

last acknow-

set received.

set

received

is

a 3741 or

block

A

status

message

has responded negatively

request or

transmission or reception

(T,

P,

B,

or

error, line check, received

or message

condition has been

or

DT), this occurs when a wrong length check, disk(s) full,

line check,

a

status

message

transmission

The status message

format:

E N

3741

Q

CPU

after

the

0),

this occurs

aborted

or

disk

or

A

C 0

K

is

sent

to

3741 has

(after

encountered.

error

is

sent

when

reception

is

sent

S

0

H

the

remote

to a remote

prematurely

of

a message. I n

when a transparency

data

transmitting

condition

RESET

of

data.

with

V

(h

%

e

x)

station

station's

terminated

block error, disk full error,

a block

In receive

is

encountered.

is

used

the

following line control

Displayed Error

Character

~

S

T

X

T

X

after

line bid

transmit

check, disk

four

mode

to

abort

E

A

C

K

(R, BT,

the

3741

a

mode

times)

Also,

the

Indicator

E

0

T

R,

BT, DT with wrong-length check

or

TI, RJ,

BI, BJ, PI, 01, OJ

Label

or

Record

of

the

last

valid label if

is

a CPU.

in

which

data

set received

the

remote

the

error occurred.

Communications

61

Chapter 12. IBM 3713 Printer

USES

In

many applications data originated

cessed

at

a centralized computer location, and reports or

that

other documents

at

are used

the remote site. If time

are based upon the processed data

the source documents can be spared

may be mailed

to

the

central site, keypunched, processed,

and reports printed and mailed back

~~~~~~~~~~~~~~~~~~~~~~~~~~~QO~8~nche~ffl~a~orms~ma~b~~d~bu~~im~

However, if time

attached

3713

remote site and transmit it

is

important, the 3741 Model 2 with

printer may

be

to cessing over night. After processing, created and transmitted back on diskette and for

following examples illustrate some

The using a printer

offline printing.

in

this type

of

at

a remote site

is

not

important and

at

the remote site, they

to

the

originating site.

used

to

key the data

the

central computer for pro-

output

to

the

remote site for storage

reports are

of

the advantages

application.

at

is

the

pro-

of

HARDWARE

The

IBM

3713 Printer (Figure 32)

attachment on the 3741.

hard copy from disk maximum rate

offline. The matrix printer has a

of

40

characters per second and a maximum

It enables the 3741

is

available

line length of 128 characters. Three different pin feed platens, with pin-to-pin widths inches are

feeding and stacking,

available. Forms with a maximum thickness of

IBM

of

12-1/2,13-1/8,

recommends using no more than

three parts.

Adjustable Margins Feature

An

adjustable margins feature permits the use

tional platen

pin-to-pin. interchanging

widths ranging from 7-1/2

By

manually repositioning margin stops and

platens, the customer can use

to

11-1/2 inches

the

printer forms his applications require.

Improved Customer Service: Retail chain store orders may

be keyed on 3741's at a

periodically

to

the central office computer for a run against consolidated inventory files, and picking slips transmitted the appropriate shipping warehouse for offline printing on the 3713.

regional warehouse, transmitted

to

Stand Feature

Forms

This feature permits above

floor level, and provides for stacking them after print-

placing continuous forms on a stand

ing.

as

a feature

to

prepare

or

of

nine addi-

variety

13-7/8

of

Reduced

above, invoices can

printing and mailing when the goods are shipped, in

Better Business

a 3741 at a construction site, transmitted

UFloat"

of

Funds in the Mail:

be

transmitted

prompt billing and reduced cash

Control:

Labor cost data may be keyed on

In

the example

to

the warehouse for

"float."

to

a central com-

resulting

puter for analysis and cost distribution, and management reports sent back

to

the site for printing there. The timely

receipt of cost analysis by site management permits correc-

tive management action before cost overruns occur.

62

FUNCTIONS

Printer Modes

in

The 3713 can print without printer format

Print record--the current buffer data

•

• Print data set--the current data set

four different modes (each with or

control):

is

printed.

is

printed.

• Print under search contento-the records found within the current data set under search on content are printed.

• Print under search address--the record found under

is

search on address

printed.

(

Figur

e 32.

IBM

3713 Print

er

Printer Formatting

The

format

of

output

on

the

printer

can

be

controlled

in

one

of

two

ways:

1.

2.

Local

format

control--the

location

having

the

printer

can

write printer

format

programs and load these pro-

grams

into

the

program level

buffers

of

the

3741.

CPU

format

control--the

transmitting

stati

on

(usually

a central

computer)

can send

printer

control

charac-

ters

intermixed

with

data.

The

printer

control

char-

acters

determine

the

format

of

the

output.

The

choice

of

format

control

method

depends

on

the

user's

requi rements.

Local

format

control

would

probably

be

selected if :

•

Control

and

flexibility

of

print

formatting

is

desired

at

local site.

• CPU

output

reprogramming can

be

avoided.

CPU

format

control

would

probably

be

selected if:

•

Maximum

teleprocessing

efficiency

is

important

(accom-

plished

by

eliminating

unprinted

blanks, zeros, etc. and

by

packing data

into

large transmissi

on

blocks) .

•

Maximum

data storage

on

disk

(s)

is

desired.

• Central

control

of

printer

formatting

is

desired.

IBM

3713

Pri

nter

63

Local

Format

With local format entry

programs are loaded. Up

loaded

Control

format

programs

at

one

time

program level (A)

forms

control

and

character.

Program Level

level A defines

A:

the program. Figure printer

format

program selections

control,

into

the

program level buffers

(program levels 1

is

reserved

the

The

method

33

summarizes

for

printer

character

of

format

selecting

operator

to

nine

through

horizontal

program selector

in position 1

the

effect

loads

the

formats

9).

and

the

printer

of

printer

just

as key

can

be

One

vertical

of

program

format

position 1

other

on

The

characters in positions 2

through

positions and VFC (vertical forms

tions.

Thus,

it's possible

print

positions wide VFC characters are stop

characters in program level A, additional

representing

both a tab

necessary. Figure

purpose. Figure

VFC

character

35

superimposition.

combined

requires a K in position

to

format

and

128

print

superimposed

stop

position

34

lists

the

shows

an

with

the

position

16

of

over

characters

example

The

program level A.

128

specify

control)

printer

"skip

forms

lines long. Since

the

horizontal

characters

and

VFC

position

defined for

of

horizontal

line

16

"skip

16

tab

character

No

Tab_

.Jl'litlLTalL

Character

tab

to"

up

to

stop

posi-

to

the

tab

this tab

2"

128

are

and

Character of

Program Level A

:

in Position 1

%

: with program

level

a selected

% with position

001

of

the

data

record

containing

a

zero

or

a non-

numeric

character

+

All

other

characters

Meaning

Printer

format

program b

manually selected.

format

Printer is

defined by

in position 001

program level

the

character

of

each

record.

Records are printed record per line with

format

Record

control.

is

printed

with

format.

Pri

nti

ng

control

formatted

characters in

by

stream. See following

section

on

Control.

Records are

CPU

printed

Format

record per line with format

control.

one no

data

one no

data

no

No

VFC

character

Skip

to

initial position

form

set

Skip

to

2

Skip

to

3 3 L

Skip

to

4

Skip

to

5

Skip

to

6

Skip

to

7 7

Skip

ta8

Skip

to

9

End

of

form*

*Character

than

the

is,

if

form

or F is

inserted in position 61.

Figure

34.

is

inserted in

number

Program Level

Forms

is

10"

Control

of

long

on

the

available

(60

print

A:

Horizontal

Characters

position

print

lines

(blank)

1

2

4

5 N

6

8

9 R

E F

that

is

one

greater

lines per form;

per

form),

the

Tab

and Vertical

T

J

K

M

0

P

Q

that

E

Figure

33.

Printer

Format

Program Selection

64

(

Pro Le

gram

vel

A

2 3 4 5 6 7 8 9

%

T

10

11

2

12

13

14

15

16

K

17 18

19

20

21

22 23 24

25

26

27

28

3

4

\

~

rizontal

Ho

b

Ta

-

1

-

2

-

3

-

4

-

5

-

6

-

7

I--

8

I--

9

I---

01--

e

1 2

.....

I---

c

o

2

u

----

3

I---

E

o

14

()

(l)

2

22 23 24 25 26 27

-

5

-

6 2

-

17

89-

1

0-

2

1-

-

"3

f---

r--r---

4

r---

"'~'--

LL

co

·E

>

Figure 35. Program Level A Example

:--

-

~

-

/

~

t

T

I

/

_/

--

9 2 3 5

2

./

...........

---

4 5

/

V

/

./

~

--

~

-

/

//

./''''

V

--

4

~

....

2 8 9 0

t t

+

I

rT

/

7

/

)/

/"

V

/'

./

V P A

V

./

~

V

-L.....

/

rr

I

~-'X

,/

./

/

T

~

1

T

A B C

2

1

H I

~

5

7'

/i~

y

5 5

6

N

M I

5 5

/

R

N S

I

--

Character

/

I

/

I

E L E C

/

14

3

9

z

~O

~

S N

N

E A P

1

0

E

~

W

3

/

T

E

~

3

E L P 0 S

C

A T 0

U

L

Meaning

/

,1'f

t

I

II

/

I

/

R I C C

Jt

L L

F/

I

L

IJ

/

R I

T

E C

T L A K E

E S

A

N K

0

R

l..---:"'-

/

I

/

I N G

S

T

t

I

,

1

Y

I

/

0,

A\

I

M

N

I

C

I

11

N

I

,j

V

Printer Instruction Set:

selected

9) have

printer

the

Character

A

B

format

following meanings:

The

characters

programs (program levels 1

Meaning

Print

data

field: Loads

from

the

record

with acters specified the A format

Print

data ing zeros: Loads the

record specified format

character,

of

leading zeros'.

characters.

field

with

by

the

by

with

the

number

but

appearing

the

number

suppression

print

number

preceding

loads blanks instead

print

number

preceding

buffer

of

characters

in

through

buffer

of

from

the

lead-

the

char-

B

z

D

data

Print

asterisks

print

buffer number number

but

loads asterisks

Print

signed

buffer

from

of

characters

preceding follows last have a D the character

field

that

character

record

with a minus

field

with

substitution

for

leading zeros: Loads

from

the

record

of

characters

preceding

data the

specified

the D format

field

from

zone.

has a D

with

specified

the Z format

(*)

instead

fields: Loads

record

with

by

with a blank

the

record

If

the

last

zone,

an F

zone

sign.

IBM

with

by

character,

of

the

number

character,

if

does

character

loads

the

and

follows

3713

Printer

of

the the

the

zeros.

print

number

and

the

not

from

last

the

65

Character

x

y

F

T

C

Meaning

Prints blanks:

with

the

number

acter.

Skips characters from

over, with acters in ber preceding

Reverse

Skips over, in reverse direction (towards

position 1)

of

characters

the

number

acter. (Note: It skip

beyond

Tab

stop:

blanks

up

tab

stop

the T format

number executed.

Carriage tents

of

forms

the feeds as specified ing

the C format

ter

must

line.

loads

number

the

skip

position.

of

return/line

the

be used

of

blanks specified

preceding

no

action,

the

record specified by

the Y format

characters from

with

no

action,

in

the

record specified

preceding

is

not

record boundaries.)

loads

the

print

to

but

not

including

The

character

tab

functions

feed: Prints

print

buffer

number

of

carriage

by

the

character. This charac-

at

the

print

buffer

the X format

the

record: Skips

number

the

character.

the

number

the F format

permissible

buffer with

the

number

determines

end

that

are

and

then

return/line

number

of

preceding

every

by

char-

of

char-

num-

record:

by charto

to

be

the

con-

per-

preced-

print

Character

Q

N

If a

control control symbol.

Figure the formatted printer

When

program level A printer 3741 1,

and

printer

step

CPU

symbol,

36

shows an example

3741 disk. Figure

printer

format

the

print

format

to

read

branch

format

description of

Format Control

Meaning Terminates

format

the

end

the

next and returns 001

No-op: This

the

first position

printer dition from occurring when this format

symbol

a 1

output,

programs which accomplish

data

set

is

examined

program selection. The % instructs

the

that

instructions. Figure

the

printer

control

of

every

record,

of

the

selected program.

format.

is

manually selected.

is

preceded by a blank

is

assumed

of

37

shows an example

and

mode

to

record ("sold

program level (program level 1) for

formatting

program: This printel

character

printer

terminates

the

format

character

of

It

to

10

data

Figure

is

initiated, position 1

determine

of

must

program. It read

control

must

a manually selected

prevents an error con-

precede

38

to"),

38

the

records residing

of

shows a set

this

the

examine position

provides a step-by-

first record.

the

or

be used

formattin\

to

positior.

be used

printer

another

control

the

desired

of

objective.

of

method

the

at

in

on

of

66

S

R

Vertical skip: Vertically spaces until number is tical spacing results if found in

Read ter to The the action.

the ters were record key was used. It does next used.

preceding

found

in program A.

in

program A. A

position 001

used

when

be

formatted

remaining

previous record are bypassed with

The R character

printing

stored

record when

of

record:

more

with

unformatted

of

the

in

the S format

Continuous

the

number

lS

will also

program A.

The R format

than

one

program level.

characters

initiates

print

buffer

it

and

the

print

the

print

record key

character

is

charac-

record

the

if charac-

not

read

the

ver-

not

stop

no

the

is

of

is

With CPU

level A 33 printer stream. Characters level A provide format

Printer Instruction Set: The following

trol characters (Figure 39) can be recognized stream:

Figure on data loading program level A (Figure output

format

control,

prior

to

initiating printing.

a (+)

in

position 1

to

accept

control characters

the

control.

40

shows an example

the

3741 disk. These records include

stream

printer

is'identical

the

operator

of

program level A instructs

in

positions 2

same

function

of

control

to

characters such

that

previously

As

imbedded

through

in

four

41)

only

was

shown

128

either

printer

data

records residing

the

resultant

shown

loads program

in

Figure

the

in

the

data

in program

local

or

CPU

format

con-

in

the

data

necessary

that

after

printer

in

Figure 37.

Record

r

r.=

I /I

Sold

to

Ship

to Miscellaneous Detail 1 Detail 2 Detail 3 Detail 4 Detail 5

Detail 6 Totals

Character

Position

Figure 36. Sample Records on Disk

,'I"

11]1

,!:

,:

I

4 C

't

zl

<

...

i\

i.·.·.

"'.'.'.'

~

i<'

,

,.'.,

g

i

.,.

>:"

','

(J

'"

P~R

{

""

11

I

'0.

Type

Name

H~r

~

INR

40

10

7.

(je go

87

21

to

this program level

.,

IT

...

"I.

[

,>

I.

I

I}

.•.

IOn

'.

I

'.'.

<6

',.1"

....

2314

5 3

""'::'."

' '

·.,

.'.

ii

.....

1 !ie.

I

Ff

"e

'"

",'

i '

••••

31

CAddress

s~

wlJ:"

T

rr

Ie

l'iiic1

IN

llI<1E

cl,:

rm

ol(]

ninl1

IA

11.1llr

n r

lie

111'f2

for

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PART

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Level 2

Level 3

Level 4

Level A

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Tab 2 times

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Carriage

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Print

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(24

character

return/I

address

Carriage

Tab 2 times

(24

return/line

city/state

return/line

Print

ZIP

Carriage

Terminate

ine feed

2 in

program

character

(24

CODE

return/line

.....

(record

field)

feed

character

feed

(5

program

evel A

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character)

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character

feed

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Figure 38. Sample Printer

Control

Tab

New line

Escape (ESC) A Escape Escape Escape Escape Escape Escape

E~cape

Escape

Note

Note line performed.

Function

(HT) 'OS'

line (NL)

feed

1:

2:

feed

(LF)

(ESC) B (ESC) C (ESC) 0 (ESC) E (ESC) F (ESC) G (ESC) H (ESC) I

The

last ESC

If

the

character,

or

print

function

buffer

or

ESC

Format

is

sequence,

Programs

is

filled

Control

Characters*

'15' '25'

'27'A '27'B '27'C '27'0 '27'E

'27'F

'27'G '27'H '27'1

executed

with

128

a carriage

by

the

characters

return/line

and

line

the

feed

Meaning

Tab

to

Execute

Skip Skip Skip Skip Skip Skip Skip Skip Skip

or

line feed

function

the

to

code

1 in

to

code

2 in

to

code

3 in

to

code

4 in

to

code

5 in

to

code

6 in

to

code

7 in

to

code

8 in

to

code

9 in

control

is

not a new

and a pending

tab

stop

return/line

program program program program program program program program program

character.

escape

in

program

A ** A A A A A A A

A

line,

are

feed

A.

function.

*Numbers

**

An

Figure 39. Data Stream Printer

in

the

column

ESCA will also

stop

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hexadecimal

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Control

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001

notations.

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Print zip code

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Appendix A. Error and Alert Codes

Code

Type

A Not accessible

B

Incorrect label

Causes

in

The accessibility field set

or volume label has a non-blank

the

character.

BOE

is

less

than

track 01, sector 01.

is

EOE

greater

than

track

74,

26.

EOO

is

greater

than

EOE+l.

EOE

or

EOO

is

less

than

BOE.

Record length

the

3742,

than

128

3742

with 128 feature.

BOE, EOE,

than

greater

The

third

or

EOO

is

not

equal

or

is

equal

to 0 or

on

the

3741

or

on

or

EOO

sector

26.

position in BOE, EOE,

is

non-zero.

data

sector

to

80

on Reset and

greater

the

is

00

or

What

To

Do

Remove

Reset and

23

Reset and enter

the

disk.

correct

enter

through 27.

BOE.

EOE.

EOO

EOE

correct

Reset and insert zero.

and/or

length

sector.

EOE.

EOO.

in

positions

One

of

the

following conditions existed when a mode selection was attempted

- The

from track

current

sector

07. label.

- Position 4 in

contain

-

The

label displayed

C Self-check The self-check digit

the

a 1.

pare properly.

The self-check field verify (V) mode.

00:

is

01

through Reset and press REC AOV

label

doesn't

Reset and rewrite

position 4

is

deleted.

doesn't

is

com-

blank in Reset, select field

Reset, key an H in position 1, and rewrite

the

label.

Reset and

the

enter

field.

of

label.

correct

the

label with a 1

error.

correct

Error

to

locate desired

mode and

and

Alert Codes

in

71

Code

Type

Causes

What

To

Do

D Disk 2

E End

F

of

Function available

not

ready

extent

not

The

disk 2 drive isn't ready when

disk 2 R

Attempt 2 set.

Attempt on

The

index

the

EOE was

copy

The selected

The second disk

EC

ADV

is

pressed.

was made

beyond

the

was made

disk 1

beyond

disk has been positioned

track

after

data

set has been verified.

encountered

operation.

to

last record

to

EOE.

the

function

setup

last record in

read from disk

in

the

data

record advance

on

the

on

disk 1 during

isn't available.

is

improper.

Reset and make disk 2 ready.

Reset and

disk.

Reset

Reset.

Reset

on

Reset and rekey FUNCT key

Prepare second disk.

continue

and

modify EOE in label.

and

modify EOE

another

disk.

or

keys for desired

on

another

in

function.

label

SEL

data

or

continue

and

appropriate

set

or

G

H

Write

Copy

protect

setup

Enter (E)

selected with

Attempt disk set

At last record

(U) mode and

record advance with

protected.

After pressing COPY:

- The disk 2 address

track 00, sector 08.

- Disk 2 isn't ready

-

COpy

tion

Disk 1

isn't

or

was made

in

update

protected.

wasn't

with

the

is

on

track

verify (V)

the

data

to

mode

in

data

attempt

pressed

numeric

track

00,

00.

mode

set

protected.

write on

with

the

set

in

was made

the

data

is

less

in

shift

but

disk 2

is

the

data

update

to

set

than

conjunc-

key.

Reset and inspect label.

Reset,

return

to

index,

and

inspect label.

Reset and inspect label.

Reset

and

advance

Reset and press DISK 2 RETURN TO INDEX.

Reset and press

conjunction

Reset and press DISK 2 RETURN

Then

position disk 2

to

proper

the

numeric

with COPY.

to

disk 2 address.

shift

the

correct

key

TO

label.

in

INDEX.

SEARCH

pressed in

72

SEQ

CONTENT was Reset

copy

setup.

and

select

proper

function.

(

Code

J

K

Type

Search address

Print

to

EOD EOD was

Causes

The

search address

decimal

tion

is

non-zero.

The

search address

the

extents

data

set

on

another

character

encountered

and

Keying Uppershift A

PROG

NUM numbers only and in program numeric field

keyed

isn't 0 through

plus.

contains

or

isn't

of

the

data

the

data

disk.

or

Z was pressed.

SH I

FT

and

the

a non- Reset

the

third

posi-

within

set.

on

current

is

continued

is

set

to

character 9, dash, space,

What

To

Do

and

enter

Reset and

Reset

and

enter

insert

Reset and press

Reset

and

press

PROG

NUM

the

SHIFT

correct

address.

disk in sequence.

correct

key.

key

to

all characters.

or

set

l

M

Incorrect

function

Mode selection

One

of

the

two

keys pressed

following

the

hex

isn't a hex

character.

SCRl

FWD,

SCRl

BKWD, CHAR ADV, pressed

REC BKSP

in

field

or

FIELD ADV was

in

verify (V) mode.

or

REC ADV was pressed

correct

(C)

mode.

DISPLAY PROD STAT was pressed

when

not

on

track

00

or in

enter

(E) mode.

Search, offl ine field totals, to

EOD,

or

copy

was

verify (V) or field

Copy was

attempted

correct

print

attempted

(C)

from

update

from

mode.

Search on from

enter

content

(E) mode.

was

attempted

Reset and press

two

Reset and press

Reset

Reset and reselect

(U) Reset

Reset

hex

characters.

and

the

appropriate

press

appropriate

select

reselect

hex

key and

appropriate

correct

mode.

the

key.

function.

Enter (E), modify index initialize from

(I)

other

mode

was

than

index (X) mode.

(M)

or

attempted

Reset and reselect

correct

Error

mode.

and

Alert Codes

73

Code

Type

Causes

What

To

Do

M

Mode selection (continued)

Verify (V)

search (S) mode.

Field

with

1.

2.

3. When

Update (U) from (S)

mode when search was selected

from

Communications from verify (V), (S) mode.

Search from on

the

DISPLAY PROG was pressed in con- Reset and reselect

junction

(V)

mode

correct

one

of

Not

in verify (V)

While in an

the

record

enter

(E)

enter

(E) mode.

on

content

update

last record

with

or

field

from

enter

(C)

mode

was

attempted

the

following conditions:

mode

auto

dup/skip

currently

mode

(U)

either

correct

was

mode

enter

was

mode

in

at

the

attempted

or

from search

was

(E),

attempted

when

the

data

shift

key in verify

(C)

mode.

attempted

or

(E)

or

field

end

of

search

currently

set.

Reset and reselect

Reset

and

reselect

Reset

and

reselect

Reset and reselect

correct

mode.

N

Keyboard

overrun

Disk initialize was one

of

the

following

From

1.

When

2.

on

the

3.

When has a disk inserted

Program select was

correct

Program load was (V) mode

Keying rate exceeded machine capacity. Reset and

(C)

or

the

secondary

the

primary

index

the

secondary

mode.

field

attempted

conditions:

station

track

attempted

attempted correct

(C)

under

station

isn't

station

in field Reset and reselect

in

verify Reset and reselect

mode.

Reset, select primary

disk

from

secondary

correct

continue.

station,

station.

mode.

and remove

74

Code

Type

Causes

What

To

Do

0 Operation

Program select was selected when

the

cursor

isn't

at

the

beginning

the

field.

RIGHT ADJ was pressed right adjust field of

the

record.

SKIP, DUP,

except

or

REC ADV was pressed Reset and position cursor.

in a right adjust field and

first position

SKIP, DUP

of

the

or

REC ADV was pressed in a self-check field and position

of

the

field.

not

in a Reset and press

at

the

end

not

at

not

at

the

DISPLAY FIELD TOTALS was pressed

not

at

the

beginning

of

the

field.

DISPLAY PROD STAT was not

under

program level zero

enter

(E) mode and

entered

been

into

the

data

current

attempted

or

had

record.

of

the

in

Reset and position cursor.

first

Reset

and

Reset, selection program 0

function.

correct

key.

position cursor.

and

reselect

The

P

Program

key following SEL PROG

or

PROG Reset

and

rekey sequence.

LOAD isn't a program number.

A new program was selected while Reset and position cursor

or

not

at

a field begin character.

change program.

Incorrect Program was selected. Reset and modify program

on

field beginning

or

reselect

program.

Q

Field totals No . (period)

or

digit follows

the

Reset and rewrite

the

control

statement.

program character.

The

position

80

for

3742

with

No N

An invalid character follows

the

3742

128

or

W follows

number

or

128

feature.

the

is

greater

than

for

3741

or

position number.

the

mask Reset and rewrite

Reset and rewrite

and

Reset

rewrite

the

control

statement.

(must be ,;:.&).

Program 1 through 6 on

through A

128 mask

on

feature

statement.

is

the

not

3741

specified in

3742

or

3742

or

the

1

with

Reset and rewrite

the

control

statement.

Error

and

Alert

Codes

75

Code

Type

Causes

What

To

Do

Q

Field (continued) position

R Right

totals

adjust

No

"<"

sign was

of

Data key was pressed adjust

field was filled.

Data key was pressed

found

any

program buffer.

in

after

the

characters have been verified.

on

A mismatch occurred acter

for

a right

adjust

ADJ

or

RIGHT

at

the

start

characters

type

of

fill character.

occurs

when

character

RIGHT ADJ

- (dash) was pressed Reset and, if

of

a field

or

contains

the

first non-fill

is

encountered.

or

dash

atill

field

that

isn't

the

wrong

The

(-)

key was Reset and

pressed before all characters

field have been verified.

first

the

right Reset

Reset

skSP

rewrite

and

press RIGHT ADJ

and

reenter

the

field.

control

and

all Reset and press RIGHT ADJ.

char- Reset

all

fill

and

correct,

correct

do

field

the

program.

dash

and

correct.

RIGHT

error

in

correct

the

field;

statement.

or

FIELD

ADJ

are

S

Search

The mask

during a search on

T

Truncation

Attempt beyond

RIGHT ADJ was pressed

of

DISPLAY PROD in

enter

length

U

Printer

didn't

sequential

was made

the

record.

(E)

is

less

has run

match any record Reset and inspect search mask

on

content

logical record length.

STAT

mode

and

than

21.

out

operation.

to

enter

at

was pressed

the

of

forms

or

search

data

the

record

or

the

end

label.

Reset and backspace

record.

Reset

and

advance

to

space

Reset,

Reset

field with in record.

return

to

index,

and

check forms.

to

or

advance

and

data

to

or

back-

inspect label.

set

hardware has failed.

76

JI

Code

Type

Causes

What

To

Do

V Verify mismatch

W Printer

X

format

Right adjust sign

A mismatch occurred between current character

A nonblank character was found during a skip operation a record advance of

A mismatch occurred between characters in the previous record in a duplicate operation.

Invalid printer used.

A sign mismatch occurred

end

(V) mode.

data

keystroke and

in

the

record.

or

operation

the

following manual

the

corresponding character

format

of

a right adjust field in verify

or

current

character was

the

during

in any

skip fields.

record and

in

at

the

data

the

Reset and key

Reset and

Reset and correct character if necessary.

Correct format.

Reset and press RIGHT AOJ

depending on corresponding sign.

correct

character.

character if necessary.

or

dash

(-)

key

y

Z

a

Empty

data

set

Last record In

write error

forming a record advance and

Early disk removal

Verity (V), update (U) mode was equals EOO.

enter

the

EOE.

verify (V) mode,

In

occurred when performing a record advance data set.

Disk was removed while

operations are in process.

attempted

(E)

or

update

write error occurred when per-

on

the

last record

or

search (S)

when BOE

(U) mode,

the

write error

of

the

at

the

disk

Reset and inspect label for desired

Reset, search displayed. Update and record advance

Reset, search reverify record advance

Insert disk and press RESET. Inspect

EOO, and inspect record

the

record if necessary

to

rewrite record.

EOO, select verify

if

necessary and record

to

rewrite record.

NUM

and

modify

SHIFT

label if incorrect.

data

mode

with

set.

and

Error and Alert Codes 77

Code

0

Type

Early

disk

removal

Causes What To

Disk

was

removed while not on

Write down the current disk address

Do

track 00. status line, insert disk, and press

(continued) and RESET

sector 08).

removed, modify the corresponding label with EOD

set

to enter mode but had been since leaving track 00, set

EOD

equal to

record entered. Record advance, write down

current disk address, return

modify the

address.

NUM

(will

position the disk on track 00,

If

in

enter mode when disk

the recorded address.

EOE

and search for the last

to

index, and

label

with

EOD

set

to

in

the

SH

1FT

was

If

not

in

the recorded

Length

No

2

3

4

record found

Seek

Read

The record read from disk did not

have

a logical record length of 80 inspect label for proper data set and extents. for 3742 or did not length specified

No

record corresponding

current disk address

No

track corresponding

disk address

could

equal the

in

the data set label.

to

the

could be found.

to

the current Numeric

be

found.

The record at the current disk address

Numeric shift and reset, return

Numeric shift and reset, and retry operation.

sh

ift and reset, and retry operation.

Numeric shift

and

reset, and retry operation.

to

index, and

could not be read.

5

6

Write'

Deleted record

The record

could not

be

written

disk.

The

6 code indicates that the current

is

record appear momentarily position of the status operations where

passed

SEARCH

COMMUNICATIONS. not

merely

a deleted record. A 6 may

in

the error

line during

deleted records are

automatically such

CONTENT,

DISK

This should

be

interpreted

as

an

indicates the passing of a

error. It

as

COPY,

to

Numeric shift and reset. Record backspace,

enter data, and record advance.

Numeric shift and reset.

deleted record.

??

78

,If

Write test

Data

cannot

be

written on the disk.

Numeric shift and reset, then

reload the disk.

DISK

INITIALIZATION ERRORS

Code

*

Type

Input

specification Track

Causes What

00

is

specified as a bad track.

is

greater

other

or

an

than

than odd

number

Sequence

A character was entered

characters entered in positions 7-12.

Positions 78-99 were specified incorrectly.

Bad

track

specification

Bad tracks

Bad

tracks are

not

ascending sequence.

More

than

two

bad tracks are on

entered in

disk. persists, discard disk.

Write

error Disk error occurred while initializing

the

disk.

0-9

13.

or

blank

of

the

To

Do

Reset**

and

correct

error.

and

reenter in ascending sequence.

Reset** and retry disk initialization.

Reset** and retry initialization.

If

error

**Initialization errors are

must

be

done

over.

not

reset by

the

reset key.

The

disk

is

removed and reinserted. Then

the

initialization

setup

Error and Alert Codes

79

80

Index

abort

error message remote

accessibility

accumulator

60

error

display,

71

offline

field

accumulators

description offline

ADDRESS

31

field

totals

SEARCH

key

33

25 adjustable margins feature 62 alert codes ALPHA AND AUTO AUTO

bad

track check code, error identification specification

batch beginning bibl

iography, teleprocessing

bid

response error, negative

binary

BOE BSC

(see

bibliography

71

SHIFT

key

function

DUP/SKIP REC

ADV

33

switch

21

23

41

writing

40

79

40

error

79

auditing

of

extent

31

field

56

44

60

synchronous communications (see BSC)

field

56

(binary

synchronous communications)

also

communications;

teleprocessing)

44

data set label fields

beginning

~nd

of

end

of multivolume record length

disk

errors electrical error

conditions

extent data extent

indicator

60

circuits

56

5~

56

46

59

of

example 57 facilities features

46

49

indicators

sector status track

modes operating procedures programming support status

description format

throughput

61

51

61

51

45

message

61

46

BSCA

disk(s)

full

error received data setup

error

block

60

error

tot,als 34

56

61

buffers

current definition hold previous record

bypass

field

record

10

definition

10

code

card reader feature, operator carrier,

common CE mode centralized chaining, program

(see

common

1,8

transcription

28

environment,

chaining characters 28 CHAR

ADV

key

CHAR

BKSP key character codes character keys

21

26

21 characters, mask statements checking a circuits, teleprocessing clock codes, error and coding a program COMM key common

disk

41

feature, synchronous

alert

26

21

carrier nonswitched switched

46

71

communications

(see

also

BSC; teleprocessing)

description

44 example 57 facilities modes

compare remote COMPUTE computing

modulus modulus

content CONTENT continuation

field numeric

control

46

51

terminal

FIELD

TOTALS

self-check

10 11

digit 42 43

search, search mode

SEARCH

key 25

characters

26

28

characters,

printer

identification

copy

all

or

part

of

all

or handling up

to

COpy

key

copy setup

a data set

part

of

disk

2 38

disk

errors 39

a specified record on

22

error

72 correction keystroke counter, counters, counters display CPU

crossfooting current

production

format

control advantages description

record

30

63

66

31

buffer

statistics

10

31

identification

carrier)

typical

33

49

key

21

14

66

38

disk

2 39

verify

30

50

installation

sequence

50

Index

81

DASH

key data data call data converter 1

DATA

Data data data data set data set data set

description

index data set mode, data set data station data stream data tracks 6 decentralized

definition

DELETE

deleted record deleted records

description enter mode 18 search mode sector

update mode 18

verify delimiter digit, disk

checking

disk

error

recovery 39

termination disk errors

BSCA

initialization disk(s) disk

initialization disk errors procedure purpose

disk

layout

disk

not

disk removal error, early 77 disk 2

(see

copy not operation 37 preparation 37 search operations

DISK DISK DISK 2 RETURN

diskette

advantages 1 , 6

description 6 display, DISPLAY DISPLAY

22

block

error, BSCA received

termination

DISPLAY

Entry

System overview

field,

sector 7

information

empty

label fields, BSC (see BSC data set label fields) labels

track

not

ready error 60

(see 3741 Data

printer

transcription

characters,

REC key

error

content

mode 18

character,

self-check

handling when copying

60

full

error, BSCA

checking

79

40 6

accessible

also

dual

(see

copy)

ready

error

2 REC

ADV

2 REC BKSP key

verify

mode DATA FIELD

key 22

lines 19

error

40 8

print

control

18

40

prompting

42

41

without

79

41

error

disk)

key 22

TO

key

NAME

58

77

62

field

23

78

recovery 39

60

71

72

38

22

INDEX

12

22

key

61

Station)

characters

environment,

26

record 29

key

22

23

69

typical

installation

DISPLAY DISPLAY

display lines 19

DISPLAY

DISPLA display screen displaying

dual data station dual

dup

DUP key duplex duplication

early electrical empty end

end end ENTER

enter mode

EOD EOD

EOE EOE error error error

error

termination error recovery, self-check errors errors, example

communications 57

offline

online

features

BSC

data station 3 dual data station 3 printer

FIELD

FIELD field

FIELD

field field

FIELD

PROG key

FIELD

TOTALS

PROD

Y PROG key

field

totals offline production a program 28

disk

(see

also

capability copy

(see

operation 37 preparation on search operations 38

fields

mode

disk

circuits,

data set

of

extent error field

of

data

of

data search, search mode

key

data

flow

description 10

field SEARCH error field codes conditions, correction, handling when copying

recovery 39

disk

field

49

ADV

BKSP key

continuation

COR key

correct definition

STAT

19

31

field

total

statistics 30

(see 3742 Dual Data

disk

2)

37

copy)

3742

42

23

46

functions,

removal

error

teleprocessing

error

72

56

field

56

23

10

56

key 25

72

56

71

BSC

verify

without

initialization

field

totals

totals 32

62

key

23

character

23

mode

13

characters

accumulators 34

verify

77

key

23

37

77

59

mode 12

recovery 39

79

34

26

23

key

23

mode 12

46

14

42

26

Station)

(

82

FIELD

NAME

DISPLAY

FIELD

PROG

DISPLAY

field

totals description display error mode offline online

FIELD

TOTALS

31

75

16

33

31

DISPLAY

fields

42

(see

CPU

(see

local

printer

error

73

keys

21

not

available

select keys

for

format

data set label self-check

format

control CPU local

format

error,

formatting, forms

stand feature 62 function function function function functions

BSC

44 data station 3 dual data station 3

printer

half-duplex handling

62

mode

disk

errors when copying

recovery 39

termination

hardware,

without

printer description 62 features 62

hash

totals

key

31

23

HEX hexadecimal data, hold

buffer

IBM

Diskette

IBM

3713

IBM

3740

IBM

3741 Data

IBM

3742

IBM

3747 Data Converter 1

ICA

(integrated identification identification

description

10

(see

Printer

(see

Data

Entry Station

Dual Data

communications card reader feature, operator feature, terminal

50 remote terminal transmitting

identification

terminal

field sector 7 writing

identification identification incorrect incorrect index

40

sequence, terminal sequence compare, remote terminal

function

label

error

track data set labels 8 description 6

layout

7

key

BSC

(see

control)

format

control)

77

63

error 20

46

recovery 39

verify

mode

diskette)

3713

System

(see

Station

identification

error

73

71

23

key

23

BSC

data set label fields)

72

13

Printer)

(see

3740

Data

3741 Data Station)

(see

3742

Dual Data Station)

adapter)

45

50

compare

sequence

50

Entry

50

System)

50

indicator indicators,

indicators, initialization, initialization initialization input instruction

field,

BSC sector track

61 BSC

specification

set, CPU

format

local

format

multivolume

61

error 59

disk

(see

errors procedure

printer

control

79

error

disk

initialization)

41

79

66

65

56

integrated communications adapter

keyboard keyboard overrun keying error keylock keys

feature

20

73

error

51

74

keystroke counter 30

label, incorrect last record length check error, wrong length error line

bid

error, received line check line

termination loading a program local

format advantages description

logical

AND

write

78

error

control

function

71

error

60

58

63

64

TI

60

26

33

margins feature, adjustable 62 mask

14 mask statements matrix

printer

33

62 merge records 38 message,

message mode

mode selection modem modify modifying modulus 10 modulus multivolume

BSC description format

61

aborted

of

operation BSC

51 definition enter

10

field

correct

field

totals modify printer

62 read index search update verify

13

11

46

mode

a program

11

status

61

error

10

13

16

error

16

42 43

indicator

60

73

28

field

56

(lCA)

45

Index

83

negative

bid

response

networks

nonswitched switched

NEW

LINE

no

record nonswitched not

ready data set disk 2

NUM

SHIFT

numeric

offline

continuation

field description display example selection writing

online

field description example restrictions

operating

46

key

24

found

error

network

error

60

72

key

24

totals

33

34

33

on

disk

totals

31

32

information operating procedures, operation operation

operation mode

of

dual disk 37

error

75

(see

operator guidance

operator

operator operator

operator

overrun

guidance feature identification

initiated interface

display

keyboard

error,

termination

19

20

keyboard

pin-feed platens 62 platens, pin-feed 62 point-to-point pooling data preparation previous record print

data set mode 62

print

to

PRI

NT PRINT print

record mode 62

print

under search address

print

under search

of

EOD

error

TO

EOD key

REC key

networks

38 dual

buffer

24

content

printer

(see

also

3713

Pri nter)

control

characters, data stream

description

detailed error

76

format

error format formatting general

instruction

CPU local

modes

77

program selection

63

description

set

format

control

format

62

private line channels

error

60

78

46

characters 28

34

10

BSC

51

mode

of

operation)

29

line

19

card reader feature

60

74

45

disk

on

3742

10

73

24

mode

62

64

1 J

66

control

65

46

37

62

66

50

PROD

STAT

productions

description display

PROG

DISPLAY

PROG

LOAD

PROG

NUM

DISPLAY

statistics

30

key

SHIFT

30

key

23 24 switch

23

program

chaining coding display error information loading modification selection selection

termination program level A programming programming prompting prompting

read

error

read

index

data

description read out/reset fields reader feature, REC

ADV

REC

ADV REC BKSP key REC BKSP receive mode

75

messages records

78

mode

flow

key key,

key,

28

26

28

lines

26

28

26

printer

format

characters

64

information

support

29

16

operator

24

DISK 2 22

24

DISK 2 22

56

19

64

26

for

teleprocessing

29

31

identification

receiveltransmit mode 57 receiveltransmit-transparent mode 57 received data received line

block

bid

error,

error

BSCA

60

61

record address search, search mode record advance,

verify

mode

12

record advance operation

description 17

of

end

extent

17 enter mode 17 enter mode, alternate

modify

index mode 17

search mode

update mode

verify

mode

record

counter

17

30

17

method

17

record length

description 7 error

78

field

record merger record mode, recovery procedures reinitialization remote remote remote terminal

56

38

print

requirements

abort

error

environment,

identification

62

71

60

typical

40

installation 1

compare

RESET key 24

out

fields

reset/read

restriction~,

online

field

31

totals

32

card

13

44

50

84

RETURN RETURN RIGHT right

ADJ key

adjust

TO

INDEX key

TO

INDEX key, DISK 2

25

error

76 right-adjust fields, verify right

adjust

sign

error

SCRl

BKWD key

SCR l FWD key

25

scrolling

backward description display modes forward

keys

search address SEARCH search address search

on SEARCH search

content search

to

19

20

error

ADDRESS

mode, content, CONTENT

mode,

end

of

data,

19

key 25 print

search

key

print

SEARCH EOD key 25 search

error

76 search mask search

data description search search search

search search search SEARCH search

14

mode

flow

13

on

content

to

end

of on on

operations, on

record address, search SEQ

on

sequential

data

record

address

sequential

dual disk 38

CONTENT key

content,

sectors

contents

data

definition

40

field 7

6

identification field 7 indicators

sequence

61

code

40

second disk

advantages 37 copy

to

operation

preparation

search

seek

error

SEl

PROG Key

disk 1

operations

78

37 on

38

3742

25

selecting

offline field

a

program

totals

26

self-check digit

computing

modulus modulus

description self-check self-check

computing

description

error self-check fields

10

11

42 error feature

self-check digit

42

recovery

42 43

71

42

mode

77

73

mode

search

14

content

37

38

33

24

under

25

under

mode

14

13

search

12

14

15

mode

25

42

22

62

14

mode

13

15

SEQ

CONTENT SEARCH key

25.

sequence, terminal identification 50 sequence sequence

sequential

setup sign signs, verify skip fields skip functions, verify

SKIP key starting statement, station statistics,

status status status

switched switches synchronous system

code, compare,

content

error,

BSCA

error,

right

mode 42

25

information

mask

status

production description display

indicators line

19

message, BSC

description

format

network

20

environment,

sector

remote

search, search

60

adjust

13

33

line 19

30

51

61

46

clock

feature

typical installation

40

terminal identification

mode

77

mode

12

17

49

centralized 1 decentralized remote

system

tab

characters TAB key teleprocessi

(see

bibliography description electrical circuits facilities features programming

1

overview

25

ng

also

BSC;

46

49

64

communications)

44

46

support

45

terminal identification

compare,

remote

50

feature

description remote

transmitting

sequence

50

terminal identification

50

termination

characters,

data

line

operator

throughput,

program

call

58

initiated

communications

26

60

46

totals

display, field

31 field (see field totals) offline field

track

check

track

indicators

track

specification

tracks

error

transcription

33

41

61

error

79

environment

79

(see

system

transmission modes, 3741

disk 1 disk 2

49 49

15

compare

sequence

environment)

50

Index

85

transmit mode transmit/receive mode 57 transmit terminal identification sequence transmit-transparent mode transmit-transparent/receive mode 57 transparency check error 59 transparent-transmit mode transparent-transmit/receive mode 57 truncation

UPDATE

update mode

data description

uses,

printer

verification code,

verify

correction keystroke counter

VERIFY

verify

mismatch error

verify

mode data description display 12 duplication error correction 12 hexadecimal data

record advance 12 right-adjust fields signs skip functions 12

verification code 12

vertical forms

error

key 25

flow

key 25

flow

13

51

76

11

62

verify

mode 12

77

11

functions 12

13

12

control

character (VFC)

56

30

64

50

VFC

(vertical forms control) characters

volume identification

write

error 78, 79

write

error, last record 77

write

protect

error 72

writing

field totals on disk 34

wrong-length check error

3713

Printer

(see also printer)

description 1 functions 62 hardware 62 uses

3740 Data

3741 Data Station

3742 Dual Data Station

3747 Data Converter

62

Entry devices 1 overview

description 1 dual disk operation keyboard overview 3 transmission modes

disk 1 disk 2

description 1 dual disk operation dual disk preparation keyboard overview 3

40

System

37

20

49 49

37

20

64

60

37

86

(

READER'S COMMENT FORM

IBM

3740 Data Entry System

IBM

3741 Data Station

IBM

3742

Dual

Data Station

Reference

Manual

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IBM 3742, 3740, 3741 Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual