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

IBM 3742, 3740, 3741 Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual