IBM 3741 Data Station Reference Manual

GA21·9183·4

Systems

IBM

Data

3741

Station

Reference

Manual

Fifth Edition (November 1977)

This

is a major vertical line by a bullet

revision of,

at

the

(e)

at

left

the

of

left

and

obsoletes, GA21-9183-3. Changes are indicated by a

the

change; new

of

the

figure

or

extensively revised illustrations are

caption.

denoted

Changes are periodically subsequent

Requests to

the

A Reader's

revisions

for

copies

IBM

branch office serving

Comment removed, address Rochester, Minnesota

©Copyright

International Business Machines Corporation

made

or

of I BM

Form

your

55901.

to

technical newsletters.

publications should

is

at

comments

Comments

the

information

your

the

back

to I BM

locality.

of

this publication.

Corporation, Publications,

become

in

this manual and will be

be

made

to

your I BM

If

the

property

1973,

of

1974,

reported

representative

form has been Department

IBM.

1975,

245,

1976,

in

or

1977

Preface

This

publication

specific This

information

publication

application personnel, system analysts, engineers gramming for

3741

Data

The

IBM

3741

Entry

System.

els (Models 1 and

Model 2

nications capabilities

Like

the

3741

Work

Station

The

3741

els (Models 3 functions mable Work This

publication

grammable Work

Data

Station.

In

this

publication,

tion

Models 1

mable Work

not

under

about

the

der

control

4 Programmable Work Station General Information,

and

GA21-9196,

Work Station Programming Reference Manual,

This

publication

and

a~pendixes:

• Chapter

view

of

• Chapter 2. Operation Modes and Considerations pro-

vides

information

and related considerations

• Chapter 3. Program Information provides

on

program coding, program chaining,

is

a reference manual

about

the

is

intended

who

wish specific

and

operational

information

Station.

Data

and

is

The

the

Data

part

Station

3741

2).

addition

Station,

of

The

on

Model 2.

the

is

Data

only

of

the

IBM

Programmable Work

and

4).

The

3741

as a

3741

Data

Station

is

under

provides

Station

information

only

references made

or

2 apply (respectively)

Station

control

3741

of

1.

the

Model 3

of

an ACL program).

Programmable Work

an ACL program, see

or

IBM

3741

Models 3

is

IBM

divided

3741

into

Data Station provides an over-

3741.

about

buffers, modes

that

provides

IBM

3741

Data

for installation

sup~rvisors,

and

system

on

the

considerations

part

of

the

IBM

Station

difference

binary

Station

consists

synchronous

IBM

3741

3740 Data

consists

between

Programmable

Entry

Programmable Work

unless

the

3741 Program-

control

of

an ACL program.

about

when it

or

functions

to

the

3741

to

the

4 (when Models 3

For

Station

IBM

3741

and

4 Programmable

the

following chapters.

of

concerning

the

and

Station.

pro-

of

the

IBM

3740

Data

of

two

Model 1

commu-

System.

of

two

Station

the

3741

as a

3741

Data Sta-

3741

Program-

and

information

when it

is

Models 3

GA21-9194.

operation,

3741.

information

operator

guidance.

mod-

Pro-

4 are

un-

• Chapter 4. Production Statistics provides

on

the

production

ing

of

the

counters.

• Chapter 5. Online Field Totals Offline

Field

and offlfne field

• Chapter

7.

disk search,

is

added

to

• Chapter 8

how

• Chapter 9

about

..

to

initialize

..

" Self-Check Feature provides

self-checking

statistic

counters,

and

Totals provide

totals

Second Disk provides

and

copy

the

3741.

Disk Initialization provides

or

check

when

information

capabilities.

operations

a diskette.

using

modulus

information

when

information

and

the

Chapter

on

the

information

10

display-

6.

online

on

second

second disk

or

modulus 11.

• Chapter

the

10.

binary

Communications provides

synchronous

communications

information

feature

of

3741.

• Chapter 11.

provides Printers are used

• Chapter

tion

about

IBM

3713,

information

when

12.

Proof

the

numeric

IBM

3715,

and

IBM

3717

Printers

on

how

the

3713, 3715,

attached

Keyboard Feature provides informa-

key

to

the

3741.

rearrangement

for

and

the

proof

keyboard.

• Chapter 13. Data Recorder A ttachmen t Feature pro-

vides and

5496

information

Data

on

how

the

129 Card

Recorder are used

when

Data

Recorder

attached

to

3741.

• Chapter 14.

the

3741

• Appendix A. Timings provides

for

searches, offline field

ization

•

Appendix

I/O

Adapter provides

can

transfer

data

directly

information

to

or

information

totals,

copies,

and

operations.

B.

Card Punch to Hexadecimal Conversion.

from

a system.

on

disk initial-

on

timing

on

the

3717

a

how

iii

This

publication

data

entry

techniques

tents

of

the

following

•

IBM

3740

System Summary

•

IBM

3741 Data Station Operator's Guide, GA21-9131.

•

The

IBM

Diskette General

GA21-9182.

•

IBM

3742

GA21-9184.

assumes

Data

that

the

reader

and

is

also familiar

manuals:

Entry

System

and

Installation Planning, GA21.-9152.

Information

Dual

Data Station Reference Manual,

is

familiar

with

Manual,

the

with

con-

iv

Contents

CHAPTER 1.

IBM

3741 Data Station Keyboard Display Diskette

Standard Functions and Available Features

CHAPTER 2.

CONSI DE

Buffers

Current Record Previous Record Hold Program

Power On Modes

Read Index Data Modify Enter Mode (E) Update Mode (U) 13 Verify Field Correct Mode Search Mode Field Totals Mode (F) 18

Hexadecimal Data

Multipunch Hexadecimal Display

Deleted Records.

Mode Considerations

Record

Adding Records Data Recovery Bad

Spots on Disk 23 No Record Found (2) Error Seek Disk Read (4) Disk Write (5) Error CE

CHAPTER 3. PROGRAM

Program Coding •

Program Field Descriptions Creating and Storing Programs Displaying Changing a

Program Chaining

Program Chaining Example

Operator Guidance

Prompting Messages.

IBM

3741

DATA

Overview.

Unit

OPERATION MODES

RATIONS

Buffer

Buffer.

Buffer

•

Buffers.

Information

of

Operation.

Index Mode (X)

Track

Data

Set

Set Label Error Checking

Index Mode (M)

Mode (V)

(S)

Operations.

I nsert Feature

Insert Mode Characteristics

to

(3)

Error

Mode.

Programs

Program

Labels

(C)

.

• 15

for

a Batch

Error.

INFORMATION

in

a Program

•

STATION

AND

Deleted Records

Buffer.

•

CHAPTER 4. PRODUCTION STATISTICS

Counters. 2 2 3 4

5 5 5 5 5 5 5 6 6 8

11 11 12

13

15

18 19

19

19 20 20 21 22 22

23 23 23 24 24

25 Copying a Record

25

25 28 30 30 30 31

31 32

Keystroke Counter . Record

Counter.

Verify Displaying Production Statistics Track

CHAPTER 5. Online Field Totals

Programming Online Field

CHAPTER 6. Offline

Programming

Control

CHAPTER 7. SECOND Dual Disk Operation on the 3741 • Search Operations Copy .

CHAPTER 8. Initialization Procedure Disk Checking

CHAPTER 9. SELF-CHECK Computing the Self-Check

Correction Keystroke Counter

to

Record Conversion Table

ONLINE

Displaying Field

Accumulate Totals Fields

Read Out/Reset Field

Online Field

Example.

Auto

Field Totals Operation

Displaying

Accumulate Totals Fields

Read Read

Control Statement Format Character Description Examples. Unconditional Offline Program Program Program Offline

Copy Copy Copy Up

Modulus Modulus

Total

Balance Example •

OFFLINE

Offline

Out

Field Totals Fields

Out/Reset Field Totals Fields

Statements.

Program

Field Totals Example

Buffer

5

Buffer

6

Buffer

7

Field Totals Setup Example

on

All

(Image Copy)

All

(Image Copy) to

a Specified Record on Disk 2

DISK

10

11

FIELD

Total

FIELD

Total

Buffer

DISK

or or

Digit

TOTALS

Fields

TOTALS

Accumulators

Fields •

Selection.

Part Part

FEATURE

Operation.

Totals.

Restrictions

Field

the Second Disk

INITIALIZATION.

of

Disk 2

of

a Data Set

34 34 34 34 34 34 35

36 36 36

36 37 37 38 38 39

40 40 40 41 41 41 41

42 43 45 46 46 47 47

47 47

49 49 49 50 50 50 50 50

51 52 53

55 55 55 56

)

I

v

CHAPTER

Features .

Communication

Transmit/Receive Mode Examples

Operating Procedures

Line

Termination

Track

COMMUNICATIONS

CHAPTER

3717

IBM

Functions

Printer

W

Editing

10.

Networks.

Synchronous Clock . Terminal Operator Keylock

Expanded Communciations Feature

Expanded

Control

Programming

Transmit Expanded Communications Transmit-Transparent Mode Transmit Receive Mode Receive Mode Transmit/Receive Mode (B) Expanded Communications Transmit/Receive

Mode Transmit-Transparent/Receive Mode (D) . Writing

Transmitted

Inquiry Binary

Termination

Inquiry BSCA BSCA

Status BSC Error

PRINTERS

COMMUNICATIONS

Identification. Identification

.

Communications/Multipoint

Feature

Support

Modes.

Mode (T) .

Mode Examples . .

(R)/Expanded Example.

(K)

of

Received Data Over Previously

Data .

Mode (I)

Synchronous Communications Summary

and

of

Mode

Termination.

Error

Conditions

Disk Errors

and Sector Indicators

Message

Status

11.

Format

IBM

CE

Recovery Procedures

Card Reader

Transmit

(P)

Error

the Data Call .

Line.

Conditions

and Indications

.

THROUGHPUT

3713,

IBM

•

3715,

Data

Mode (J)

Communications Receive

AND

IBM

Link

3713 Printer

IBM

3713 Adjustable Margins Feature

IBM

3713 Forms Stand Feature

3715 Printer 96

IBM

3715 Forms Stand Feature 96

3717 Printer 97

IBM

3717 Forms Stand Feature • 97

Printer

Modes 97

Printer

Formatting

Local

Format

Control Horizontal Local Processing

U

Error

Editing Editing

Tab

Format

Error

on

and Vertical

Control

Unit

Format

Conditions

(Printer) 110 (Printer

the

Consideration

Example 114

Format) 110

3715 and 3717 •

Skip

Example 104

Control

Stop Characters 102

57 59 61 61 61 62 62 63

66 68 68 69

69

70 71

72

74

76

77

80 81 82 89 89 89 89 90 91 92 92 92 94

95 95 95 95

97

98 99

107 110

111 111

CHAPTER

FEATURE.

CHAPTER

ATTACHMENT

Punch Operations

Read Operations

Format Card Read/Punch

Function How

CHAPTER File

Error

APPENDIX

CONVE

CARD

HEXADECIMAL

CARD

PUNCH

GLOSSARY.

INDEX

12. PROOF

13.

Punch Modes

Read

Modes.

Current Record

Program Level A Card

Read/Punch

Card Read/Punch

Switches .

Format

Control

14.

Transfer.

Mode 1 Mode 2 Mode

3

Mode 4 Mode 5 Summary

or

Disk Errors . System Channel

of

Write)

Recovery Procedures

A.

TIMINGS

B.

CARD

RSI ON •

PUNCH

TO

PUNCH

TO

ORDER)

KEYBOARD

DATA

RECORDER

FEATURE

Buffer

Format

Control

Format

Control

Format

Instruction

Works

Examples

I/O

ADAPTER

File

Transfer Operations (Read

Errors.

•

PUNCH

HEX

ORDER)

HEX

TO

HEXADECIMAL

CONVERSION

Programs.

Set

..

(IN

CARD

116

117 117 117 118

118 119 120 120 121 121 122 123 124

130 130 131 131

131

132 132

133 134

134 134

135

136

137

138

140

vi

Chapter 1.

IBM

3741 Data

Statio~

IBM

3741 DATA STATION OVERVIEW

The

IBM

3741 Data

System.

used I

BM

Model 1 (Figure keyboard

and a control

Model 1, with munications adapter.

Once

the

use only,

• Converted

The

to

record data

diskette.

unit,

data

has been recorded

data

can be

of

binary synchronous

or

for

Models 1 and 2,

Station

tBM 3741 Data

on

1)

is a standalone

one display unit, one

unit. Model 2

the

addition

transmitted

to

tape

Display Unit

is

Station

a data recording

(not

of

a binary

on

to

communications.

the

by using

part

of

the

is

a key medium

device which has

or

two

pictured)

synchronous

the

diskette

another

the

data

IBM

location

can be:

3747

3740

Data

entry

device

called

one

diskette

is

the

same as

com-

by

the

3741,

through

For Model 2

Data Converter

Entry

the

units,

the

• Processed by

els 3

or

• Used with which provides direct

• Printed by

Note:

The

4, operates as a 3741 Data

Station

Work

program Model 3 has Model 1;

able features as

4 Programmable Work Station Programming Reference Manual,

mable Work

GA21-9194, for

Diskette Unit

the

3741 Programmable Work

4

the

IBM

3540

Diskette

input

capabilities

the

3713,

3715,

or

3741 Programmable Work

Station,

is

under

Application

control.

and

When operating as a

the

same

functions

the

Model 4 has

the

Model 2. See

Station,

under ACL program

No.2

the

information

Diskette Unit

Input/Output

to a System/370

the

3717

Printer

Station,

unless

the

Control

and

same

IBM

Language (ACL)

Data

Station,

available features as

functions

3741 Models 3 and

on

the

3741 Program-

control.

No.1

Station

Unit

Models 3 and

Programmable

and

Mod-

the

avail-

Control Unit

)

Figure 1.

IBM

3741 Data

Station

Keyboard Unit

IBM

3741 Data

Station

Keyboard

The

keyboard function and switches. Data keys provide 64

different codes can be keyed with function keys as indicated by top

row

in

green,

(Figure

keys,

function

displayable characters.

select keys are used

of

keys.

is

associated with

the

The

2)

consists

select keys,

the

two

lefthand

use

to

rows

the

of

data

two

the

means

All

of

the

redefine

of

labels above

function

upper

row

keys, special

rows of labels,

of

keying

256

EBCDIC

HEX key.

the

select key, lettered

of

top

labels

The

row

the

(that

of

is,

redefines

of

labels), which are also green. select key, row

of ADV, RESET, etc.) perform specific entry. automatic functions. keys

Guide,

the

top

row

of

keys according

The

lettered

labels.

The

record advance, and program numeric shift

and

switches, see

GA21-9131.

in white,

The

special keys (DUP,

switches provide

For a complete

the

IBM 3741 Data Station Operator's

is

associated with

automatic

description

to

the

righthand

FI

functions

skip/duplicate,

of

function

the

ELD BKSP, REC

during

the

keyboard's

top

lower

row

data

Figure

2.

3741 Keyboard (Model 1)

Display

The

display (Figure 3) provides program Data screen. Line 1 indicates the display the and (underscore) character

A

information,

Station

first eight positions (total

display

6 are used

complete

uses six 40-character lines

either

data

mode

is

to

be

description

and

or

program information, depending

selected. The last

for

the

operator

used

to

entered.

indicate

of

station

status

data

on

the

screen.

of

the

station

status. Lines 2, 3, 4,

of

128

positions)

30

positions

guidance feature. A cursor

the

position

the

display

is

provided

IBM 3741 Data Station Operator's Guide, GA21-9131.

2

information,

The

3741

display

and

of

line 5

of

line 5

of

the

upon

Status Line

Guidance Message

Figure

3.

Display

3 A A

ADDRESS

112

Unit

with

01001

MAIN

STIIIIIIIIIIIIIIIIIII

Operator

Guidance

Cursor

E R

(

Diskette

The

disk

Unit

unit

Figure 4 shows

tion

of

the I BM

see

dling,

The

GA21-9182.

reads

and

writes

on

one

side

of

the

the I BM

diskette,

IBM

diskette.

its

For a complete

layout,

care,

storage,

Diskette General Information Manual,

diskette.

descripand

han-

Figure 4. I BM

Diskette

)

IBM

3741 Data

Station

3

STANDARD

Figure 5 for

shows

the

3741.

Standard or

Feature

Function

Communications

FUNCTIONS

the

standard

AND

AVAILABLE

functions

IBM

(Models 1 3741 Station*

Standard

Model 2 available

1 or 3

FEATURES

and

available

3741

Data

Station

and

2)

Programmable

(Models 3

on

the

3741

or

4;

not

on

Model

features

and

Work

and

IBM

4)

Standard or

Second

Function

Feature

disk

Synchronous

Terminal

1200

identification

bps

integrated

modem

clock

IBM

3741 (Models 1 3741

Programmable

Station*

Feature

Data and

2)

(Models 3

on

Model 2

on

Model 2

Station

and

Work

and

or

IBM

4)

4

Expanded communications

Entering

and

updating

records

Operator

Program

Record to

Search

Sea rch

Search

128

guidance

chaining

length

characters

on

content

on

end

on

record address

on

sequential

content

Ten levels

of

program

control

of

1

data

Feature

or

4

Standard

on

Model 2

Nonswitched

Switched answer

3713

Printer

3715

Printer

3717

Printer

Feature

group

Disk

initialization

Offline field

Online field

Production

Self-check

(modulus modulus

with

A:

totals

statistics

number

10

and

11)

auto

Feature

Data

recorde r attach

Disk

copy

Keylock

Operator card

Proof

Record

*Not

Figure 5 (Part 1

4

reader

keyboard

insert

under

identification

ACL

of

program

2).

Standard

ment

control.

Feature

Standard

Feature

Functions

and

on

second

on

Model 2

on

Model 2

Available Features

disk

or

Verify

*Not

under

ACL

Figure 5 (Part 2

program

of

2).

control

Standard

Functions

and

Available Features

4

Chapter 2.

Operation

Modes

and

Considerations

Entering, disk

is

performed

modes

of

formed

directly operating. fore, is

BUFFERS

Buffers data are hold

Current

The are buffer. current

by

dependent

the

different

are

between

the

current

buffer,

current

keyed.

Data record

updating,

operation.

the

control

Each

use

of

in

each

temporary

the

record

and

Record

record

Records

displayed

buffer.

verifying

by

the

The

upon

mode

buffers,

mode.

keyboard,

program

Buffer

buffer

read

data

sequence

unit

within

the

of

operation

keys,

storage

buffer,

buffers.

receives

from

on

the

or

searching

stations

the

mode

and

information

areas used

display,

disk

display

using

of

operations

data

in

which

is

unique,

and

disk.

record

characters

are

also

screen

of

data

different

station

the

and,

displayed

for

transferring

The

buffer,

placed

is

from

on

a

per-

is

station

there-

buffers

as

they

in

the

this

Program

The and A.

is

that field contain requ ired See Chapter 6. Program prompting guidance,

Buffers

3741 has 10

The

control

totals

some

in

program

record

format

operations,

field

totals

order

to

perform

Offline

buffers

are

also

message

see Operator Guidance

records.

buffers

the

control

usually and program

the

Field Totals

used

For

numbered 1 through

contain

processing.

buffers

statements

field

for

to

contain

information

in

Chapter 3. Program

totals

more

operator

For

will also

that

operations.

programs

offline

are

information.

guidance

on

operator

9

Information.

POWER ON

When

record, program selected. disk

status

and

current

the

status

INFORMATION

the

3741

and

hold

buffers

The

(N),

disk

line

is

turned

buffers

are filled

status

the

address

are

blank.

on,

the

are filled

with

I ine displays

read

index

00000. All

current

with

blanks,

N's.

Program

the

machine-not-ready

mode

(X),

other

record,

buffer 0 is

program

positions

the

level 0,

on

)

previous previously is

written

buffer

is

by

the

control

in

the

current

Hold

Buffer

The

hold when

in

during

search

operati

ons.

Record

record

displayed

on

the

buffer

verify

Buffer

disk

unit

record

contains

mode.

on

content

buffer

in

the

from

which

for

duplicating

buffer.

the

This

contains current this

or

search

the

record buffer. characters

The

into

duplicate

record

contains

on

sequential

record

buffer.

to

be

the

that

was

Data

obtained

fields

verified

search

content

record

mask

Closing changes

is

volume

allow acter) the Then

A positions 9 and other

If

since

If

Sector label

read

disk

write

the??

all

tests

defines

the

but

label

(field

use

of

cannot

the

3741

test

disks

continues

the

machine

08

contains

cover

machine

not

displayed,

is

checked.

is

blank)

a disk. If

waits

is

made;

should

are

successful,

required

on

the status

be

processed

for

10

of be

to

cannot

the

diskette

to

and

The

or

inhibit

the

accessibility field

and

the

diskette

if

not

successful, ??

the

status

inserted

be

displayed,

write

sector

first

data

information

Index Track Data Set Labels in

information). can

now

Data

be

performed.

entry

or

other

that

has

been

wait

(W).

The

the

accessibility field in

accessibil

(field

to

this

ity

contains

an A error

to

line.

If??

see if

the??

call I

records

08

on

is

read

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Figure 8 shows following set label.

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Operation Modes

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incorrect

begin-

is

other

is

from

is

read,

set

If

data

Modify

The

the be modified

Index

modify index

index

track.

volume label,

Mode

Fields

by records can also be index

mode

function_

To

perform a modify

record advance

record

to

select

modify

.only;

(M) modify

are give a to

mode

if it

error

mode.

the

only

function

read index

selection

to

be modified, key

by can

is

selected from

occurs. No

DELET~

valid keys

not

after

of

modify

(M)

mode

is

used

or

using

deleted

get

in a data

other

the

index

to

the

set

records

modify

with

function,

appropriate

the

pressing. FUNCT

be

selected

from

another

other

mode

REC, RESET,

in

the

modify

available (F)

the

first

keystroke

mode.

to

modify

label, new

on

the

index

mode.

the

use

of

record backspace

record

to

SEL

lower and

the

read

mode, a mode

can

be

and

mode.

error.

The

following

records

data

index

Any

the

modify

index

track

be

written,

index

selected

REC ADV

All

mode

on

the

set labels,

track

can

of

the

then

M.

The

mode

selection

from

the·

others

reverts

the

or

\

)

/

Operation Modes and Considerations

11

Enter

Mode

(E)

Enter

mode

is

mode

can

be

selected selection any

write

mode,

As current a

record ferred record previous record

The

mode current set keyed

(M)

other

position

new

information

press FUNCT

the

operator

record

advance occurs,

to

the

is

being

data

flow

is

selected,

record

to

blanks.

into

the

previous record

the

most

error

results if

on

SEL

keys a

buffer

keyed

is

written

is

summarized

the

disk

buffer

The

station

current

basic

from

the

disk.

on

lower

record,

until

the

into

on

and

the

record

mode

of

the

index

enter

mode

Enter

the

disk.

To

and

the

data

the

record

completed

buffer.

the

current

the

disk.

in

Figure

is

positioned

previous record

is

then

ready

buffer.

operation.

track

is

selected from

mode

select

then

press

is

stored

is

completed. record

While

record

9.

When

at

BOE;

to

accept

Enter

only; a mode

is

used

to

the

enter

ENTER.

in

the

When

is

trans-

the

enter

the

buffer

are

data

Alternate Record Advance in Enter Mode

An

alternate

be

selected

dash

will

record advance all fields of

record advance are

fields being

record

REC ADV the

disk

automatic

normal record advance duplicate tion

at

To

return

FUNCT power

method

by

appear

that

follow

executed.in

advance.function

key

exactly

duplicate

and skip fields

the

time

the

SEL

lower

on

will also establish

of

pressing FUNCT

in

position

function

the

is

pressed,

as

the

or

of

record advance.

machine

and

record

advance in

SEL

lower and

39

in

the

in

enter

mode

position

not

normal ent'er

has

operator.

skip

may

that

to

K. Inserting a.disk

of

executed

the

fields are

cause changes

the

in

this

.advantage: When

record

sees it on.

are

beyond.the

normal

the

is

status

is

contrast

mode.

always

executed).

enter

mode.

Right Adjust Fields

enter'

then

line.

changed so

cursor

at to

The

written

the

display (no

in

automatic cursor

mode,

or

turning

mode

R.

The

that

the

time

these

alternate

the

The

posi-

press

can

A

on

the

As

data

is

stored

in

the

record

buffer displayed screen.

.-At

record

the

data

is

to

the

buffer

written The is to to

current

filled

allow key

data

on

with

the

keyed,

current

and

on

the

advance,

moved

and

the

disk.

record

blanks

operator

record.

Flow

it

is

.....

for

f-----

Enter

•

Mode

Keyboard

[f

Display

01

0

Disk

Programmed right

current

pressing be record. exit pressed, in boundary.

J]

•

first depends See Right

Pressing right

The

the units an 3=L, if right 21 and

field

the

at

least

two

In

enter

a right

the

field (up

keyed

on

Adjust

the

adjust

dash

(-)

programmed

number

(rightmost) position

alpha

equivalent

4=M,

5=N,

the

digit

adjust

is

entered

the

dash key

(negative

21).

adjust

to

be moved

RIGHT

adjust

3741

Fill

character

the

ADJUST

characters

mode,

the

field. When

shifts

to

the

cursor

characters

as required.

field

definition

the

Fields in

RIGHT

field

and

is

field have

ADJUST

enters

fill

key,

when

used in a right

for

numeric

then

causes

if

the

6=0,

7=P,

O.

The

numbers

their

in a five-position,

is

pressed,

fields allow

to

the

long

RIGHT

characters

position)

are

Chapter

characters

shift,

the

of

the

digit

8=0,

numeric

the

data

right field

key. Right

and

can

ADJUST

the

RIGHT

inserted

The

character

3.

key

in

the

into

gives a negative value

field

to

negative

is 1 through

9=R)

in

the

other value.

zero

fill, right

field will

entered

.boundary

adjust

fields

be as long as a

key

is

ADJUST previously to

the

to

the

fill

character

used

first position

adjust

be

number

or

the

contain

entered

right field

left

of

for

the

entire

field

exited.

9 (1=J, 2=K,

hex

code

positions

For

example,

adjust

0002J

into

the

by

must

whole

used

key

is

the

used

the

field.

of

field.

that

is

to

The

contains

DO

of

the

field

to

a

if

12

Note: Performing a

will cause

the

right

character

adjust

fieJd

advance

to

be

or

field advance

exited

in

enter

mode.

Update

Use review

FUNCT

Data selected update tioned

the the selection (M) error. However, changes occurs matically changes

operation.

mode beginning-of-extent set

If record advance reaches EOD

mode

However, if label (a

set

Record

disk record displayed. changes are

into buffer.

Record

transfers previous and reads into buffer. If changed written

the

record update

is

the

is

into

current

flow

empty.

of

data

full (an

Mode (U)

update

or

modification.

SEL

lower

is

summarized

from

the

is

selected

at

BOE; if

at

the

mode

to

the

during

the

An

is selected

operation

an

automatic

set

is

write

protect,

end

is

read

current

buffer

and

Any

keyed

record

advance

data

to

record

data

the

record

to

disk.

mode

to

and

read

index,

from

update

current

from

update

mode

enter

to

update

empty

data

when

the

address;

automatically

protected

G,

of

extent,

from

.....

'----

-----t~

buffer

---------------1

record

was

is

read To

select

then

in Figure

the

index

is

selected

disk address

the

enter

when

mode.

mode

set

end-of-data

return

by a write

error

E,

Keyboard

records

press UPDATE.

search,

in

the

10.

track,

from

mode

the

mode record

The

search

at

the

(Y)

error

other

words,

during

changes

to

index

is

displayed)

error

is

DL--I

from

update

Update

or

verify

the

is

reread. Selecting

results

automatically

backspacing

end

occurs

address

update

to

track

protect

displayed).

_-I

•

o

...

-------

Disk

n:

(

ACM[(ORPQRATIOh

l

]

~

Display

the

disk

mode,

mode.

disk

verify

in a mode

mode

of

equals

when

mode,

enter

is byte

or

if

for

press

mode

can

If

is

posi-

mode,

also

auto-

a search

if

update

the

data

the

mode.

performed

in

the

data

1

"

~

Verify

Mode (V)

Use

the

verify

mode

to

check

be

already

when

similar is automatically in

do

To then

index

verify

matically filled is

Verify Selecting verify event

rections

source displayed.

changes

record

Next from hold

The transferred

advance record

displayed.

on

errors

to

rekeyed

the

record

not

compare,

select

press

or

mode

read

into

mode

that

to

record

made

is

record disk

buffer.

~

record

to

buffer

the

disk and

are

found.

that

of

entering

from

the

source

compared

in

the

current

a verify

the

verify

mode,

VERI

FY.

Select

update

mode.

is

selected,

with

blanks,

the

current

can also

the

is

By selecting verify

to

redisplayed.

is

into

.

IS

at

record

the

and

mode

operator

record

being used

the

record

read

......

f------

the

current

be

from

being

____

to

make

The

data.

document,

with

mismatch

press

For

the

record

selected

discovers,

to

t

Keyed

data

is

com-

pared

with

the

data

in

the

~u:::~;

transfers previous

Data

only changed.

Figure

:~~~~~:uffer.

data

to

record

is

written

if

data

11.

was

Data

on

Flow

buffer.

the

for

~

z-w~~<

disk

-.-;.-----------1

Verify

the

accuracy

corrections

process

record

the data

verify

displayed,

are ignored

of

As

the

corresponding

buffer.

(V)

FUNCT

verify

flow, see Figure

record

the

first

buffer.

from

mode

after

verify

the

mode

from

01

Disk

.~I

Display

_.

Keyboard

Mode

of

to

verifying

data

for a record

each

character

If

the

error

occurs.

SEL

mode

from

buffer

non-deleted

verify

mode.

is

provided

making

that

the

record

verify

and

the

____

o

data

records

the

data

character

characters

lower

read

11. is

some

wrong being

mode,

entire

•

_.

~

records

is

and

When

auto-

record

in

the

cor-

all

--'

Figure

10.

Data

Flow

for

Update

Mode

Operation Modes and Considerations 13

Display

Duplication Functions

During verification, not

including record current tion,

or

ing

the

is

displayed (1)

record

buffer,

(3)

when

RESET

key

cursor

an

Error Correction

If a

character corresponding following

The

1.

2. A verify status

The

3.

4.

The

Use

RESET

the

character

The

first

the

character

current

If

the

first accepted, The

correction

have been

keyed

character

occur:

keyboard

mismatch

line.

cursor

entire

record

to

reset

in

error.

character

keyed

record

buffer

character

a verify mismatch (V)

process

made

to

Skip Functions

If

SKIP

is

pressed

tered

during

verification,

of

the

field

is

checked

is

encountered,

action

terminates, displayed. can

be

replaced

then

continues

blanks.

the

After

with

to

the

data

record

position. However,

after

the

record

(2)

after

a record backspace opera-

error

occurs.

returns

is

key

the

or a programmed

and

pressing RESET,

check

the

normal verify display

while verifying

in

the

current

locks.

(V)

error

under

the

position

is

displayed.

the

error

condition

following

agrees

with

either

or

the

character

key

pressed following

error

is

continued

record.

the

entire

for

blanks. If a

cursor

stops

in

a verify mismatch (V)

a blank

by

the

remainder

pressing SKI

is

displayed

is

moved

The

keystroke

is

not

record

code

is

in

error.

and

the

error

the

that

is

again displayed.

until all

skip field

field

or

nonblank

that

position,

the

non-blank

of

up

the

entire

into

follow-

the

same as buffer,

displayed

then

correct

is

accepted

character

caused the

error

corrections

is

encoun-

the

remainder

character the

error

character

P.

The

the

field

to

the

mode.

on

in

the

is

skip

is

station

for

but

the

if

the

error.

not

Pressing DUP during verified current characters in acters acter

in

is

posted. previous record record

comparing

When using

in

the

characters in program

or

entering a programmed

data

verification causes automatically. record

buffer

the

previous record buffer. If

in

the

record disagrees

the

previous record

After

RESET

buffer

by

pressing DUP.

the

field.

the

auxiliary

current

record are

The

are

compared

is

pressed,

can

be

duplication compared

buffer

the

characters

with

buffer,

inserted

The

4.

Right-Adjust Fields

If a right-adjust field

the

cursor stays

first

data

key

depending

first character

When fill

of

the

at

the

To

exit character (-) field's sign, unless used right-adjust field is

verified in

tion

If a verification right-adjust field, a right adjust sign The sign can dash key twice.

Press RIGHT from every even ther

Failure right-adjust field causes right data

on

data

character

in

the

characters

field, When

first non-fill

from

the

in

the

key. RIGHT

to

verify a

the

in

the

field.

be

ADJ

programmed

when

one

and

when

to

press

keystroke.

is

encountered

in

the

first position

is

pressed.

the

field. If

right-adjust field

field, press

numeric

is

same

error

changed

right-adjust field immediately follows ano-

right-adjust fields

RIGHT

The

fill characters are

field

definition

keyed

is

compared

neither

are in

error,

data

does

not

character.

either

ADJ

and

the

dash key also verify

the

field

is

alphabetic. (The dash key

field having a minus sign.) If

alphabetic,

way

occurs while verifying

or

the

as a

by

pressing

dash key, if applicable,

right-adjust

ADJ

or

adjust

duplication

rest

of

the

of

the

with

the

one

the

corresponding a verify the

characters, and

agree, an the

match,

after

RIGHT

last

character

contain

the

mismatch

character

into

the

device

then

feature,

with

the

while verifying of

the

field until

with

error

cursor

the

verifying

ADJ

character

in

(X)

error

of

RIGHT

fi

eld. Press

all fill characters.

dash

key

(R)

error

field

to

be

record

in

the

corresponding

of

the

char-

error

from

the

current

continues

the

characters

corresponding

data,

the

compared

then

the

first nonfill occurs.

is

at

the

start

cursor

is

the

last

or

the

dash

the

in

the

field

any

other

posi-

the

sign

of

a

is

displayed.

ADJ

or

the

to

exit

the

key

at

the

end

on

the

of

a

14

When a right-adjust field record

on

the

3741 and RIGHT is

In verify

only

129

ADJ

for

when

has

the

mode,

the

not

3741,

RIGHT

cursor

is

the

yet

been pressed,

and

the

ADJ

is

in adjust field (to verify a zero field

is

full

(the

cursor

will have moved

of

the

If

these keys are pressed

sor

is

in

any

other

position, a right

Signs

If

the

units

a negative

position

number

of a numeric

(0

zone), field are verified separately. units

position

ed,

only

not

affected.

The

dash key also verifies

If

the

units

(dash)

but pared. If from

the

ter

in a

with

the

verifies

the

digit

To

position

the

corrected,

field using

numeric

dash key.

the

digit. I f

portion

exit

field

is

from

of

a right-adjust field has a 0

is

alpha,

the

entire

RIGHT

right-adjust field, press ALPHA SH 1FT

the

last field in a

128-character

field has been verified

the

cursor

is

not

displayed.

or

the

dash

key

the

first position

or a blank

field)

to

the

of

when

adjust

(R)

right-adjust field the The

changed.

the

field, use

the

sign.

the

character

ADJ.

sign and

first

entire

the

keystroke

the

character

The

sign

the

character

is

changed. Exit

To

verify a dash charac-

but

position

should

be used

the

right-

or

when

the

first position

the

cur-

error

occurs.

contains

value

of

the

for

the

is

correct-

(0

zone)

dash key.

zone

is

com-

function

Pressing record advance the automatic

remaining

and

the

first manual

skip

automatic

operator

position

and

manual fields

duplicate

is

forced

to

verify

the

when

the

cursor

is

in

other

of

a record causes all remaining

to

be verified as blanks;

fields

are

verified

record.

than

and

bypass

fields are bypassed.

Verification Code

After

the

last record in a verification field

of

the

to

a read index

of

extent

(E)

code

data

alert

(V)

set

mode,

data

is

automatically

label,

the

is

displayed,

data

set

has

mode

set

and

been

inserted in

of

operation

label

program

verified, a

is

displayed,

level 0

the

verify

changes

end

is

selected.

Correct

is

Field

correct

with a minimum

mode

can be selected

the

field moves field can of

the

field

first position

correct

to

the

be

Mode (C)

mode

number

mode,

first

rekeyed

is

reached,

of

the

may

be used

from

press

position

as if

the

field

of

keystrokes.

the

verify

FIELD

of

the

in

the

enter

cursor

and

the

to

correct

mode

COR.

current

mode. then mode

an

The

only.

The

field,

moves

changes

entire

field

cursor

and

When

back

to

field

correct

To

select

the

to

the

verify.

end

in a mode

mode character field.

Mode (S)

mode

on

record address

mode.

to

end

on

content

on

sequential

mode.

flow

information,

correct

Selecting field

Hexadecimal Data

Verify hexadecimal

Press HEX.

1.

data

in

the

same

way

it

is

entered:

while processing a

mode

results and CHAR ADV are valid in field

correct

field

or

current

2_

Press

two

character decimal digits the

last

keystroke

keys

wanted.

for

corresponding

The

character

that

character.

to

is

verified

the

hexa-

after

Search

Use search

Record Advance

• Search

When a record advance the

record

is

rewritten

were

no

corrections

record advance. If

taken

place

has tion

of

the advance record.

the

cursor

I

/

record,

pressing REC ADV will

and

record, pressing REC ADV causes a record

function

If

a

correction

is

positioned

to

no

verification

the

to

occur

is

performed

on

the

record,

cursor

without

had been

at

the

disk as

it

or

is

in

verification

made

first

manual

not

the

cause a

on a corrected

corrected.

is

not

correction

If

rewritten

to

first manual posi-

of

to

the

record,

position

record

there

during

a record

the

and

of

the

advance

enter

• Search

• Search enter

For

data

mode

programmed

selection

changes back

backspace

to:

of

data

from

content

when

not

automatic

(M)

the

field to

the

moves

the

from

read index,

index,

read

index

from

see Figure

in

verify

field in verify

error.

correct

verify

cursor

enter,

or

update

read

index,

12.

mode

FIE

LD mode. mode

out

update,

update

mode.

or

ADV

The

when

of

the

or

mode.

update,

a

or

Operation Modes and Considerations

15

Note:

After

. EOD,

but

before pressing R

can be canceled

RETURN

and

Mask the

brter

Mask hold start

Records are read current and the buffer is

found.

found

TO

UPDATE.

is

keyed

current

compared

mask in

record

ar

displayed.

is

transferred

buffer

at

of

the

search.

record

until a

The

is

displayed.

the

pressing

match

any

search key,

EC

AD V,

by

pressing FUNCT SEL lower and

INDEX

into

the

buffer

with

record

or

~

to

into~

hold

by

pressing FUNCT

.

Kr~::.

:=;b=":=:r=.:=====.

t )

\...::::::=====~

Display

0

__ ' __

o

Disk

except the

search

•

-1

for

search

operation

SEL

=,

:-"l)

lower

The

track

and

sector

of

extent

address,

the

address Select operation Selecting other

The

search record record

displayed record changes

updated

or

reviewed,

A search address

is

specified

equal of-extent

the

index

sor moves

play screen.

Search job.

verify

displayed.

Search to End

of

any

the

search

from

the

search

mode

causes a

stops

at

the

specified address

buffer

and

to

the

or

reviewed. Once

another

incorrectly,

to

the

end-of-data address

address

track.

to

the

on

record address can be used

This

is

done

mode

when

of

address specified can be

the

end

of

data

address minus

record

between

mode

to

do

the

read index,

by

record address

mode

selection

on

the

record address specified and

the

previous record

at

the

end

update

mode.

search can be initiated

(I)

error

is

if

the

for

the

data

If an invalid address was

first position

by

initiating

the

record

Data

these

a search

update,

is

displayed.

of

the

search

The

record can

the

record has been

displayed if

address

or

set,

or

of

the

search

at

the

beginning

one,

two

addresses.

by

record address

or

enter

mode.

function

(M)

buffer

the

is

greater

less

than

if

the

data

to

specified address

from

error.

The

current

contain

and

the

mode

now

updated

from

search address

than

the

beginning-

address

entered,

line

on

the

continue

and

then

this address.

a verify

or

any

the

be

or

is

on

the

cur-

dis-

selecting

is

IL-

___

~.

(.:::""""n;,

l

Display

Figure

12.

Data

Flow

for

Search

Mode

Search on Record Address

Search

on

record address allows set using record addresses. Search especially useful if specific records have you

know

the

To

search address. where

TT

The

record address

the

display.

addresses

for

a record in a

The

specified address

is

the

track

number

is

keyed

of

the

data

into

you

to

on

records.

set,

key its

must

have

and

SS

positions 1

record address

is

search

to

be

track

the

format

the

sector

through 5 of

updated

.,

)

through a data

is

and

sector

TTOSS

number.

Search

to

end

the

last

data

records

data

EOD. Select the other

When set is set operation

to

set,

press FUNCT

read

index,

mode

the

search

equal

to

displayed.

equal

to

changes

the

of

data

record in a

data

set.

the

search

enter,

results

in a mode

is

completed,

the

last record

The

contents

the

current

to

is

used data To

SEL

to

the

or

update

in of

record

update.

when

you

want

set

and begin adding new

search

to

the

last record

lower

and

then

end

of

data

function

mode. Selecting

selection

the

buffer

(M)

current

data

previous record

disk address

set

and

the

to

search

to

of

a

press SEARCH

from

any

error.

is

the

record

buffer

mode

of

is

16

Search on Content

Use search the tion called a mask. of

a record and character search will match character

the

in

ly

as a field ABIbCD contains in

the

EBCD

field.

Searching by beginning the

Select or

update

mode

Following a search contains the been searched and no record a search

To

continue press FUNCT ADV in

If a the search

momentarily deleted record deleted

on

content

current

3741

deleted

data

of

specified

of

the

identifying characters and

The

mask can be

may

positions

stop

between

is

mask;

character

in

a record

is

used,

AB

last

two

IC

characters

with

sector

the

search

mode.

causes a

the

is

in

(S)

that

in

the

continues

record

do

only

the

record

used

to

identify

therefore,

within contains the

search will

in

the

first

positions

might

content

the

on

content

Selecting

mode

operation,

same

data

update

error

is

displayed.

searching for records using

SEL

lower, SEARCH CONTENT,

order.

record

Do

is

deleted

and a deleted

on

the

status matches is

displayed.

to

find records

character

include

not

need

on

a record

and

the

a mask.

ABIbCD

two

of

be in

is

accomplished in a forward

record.

all previous sectors are

selection

as in

mode.

not

read during a search

record

the

that

positions.

their

anyone

the

entire record.

to

that

the

positions

blank

cannot

For

stop

positions

the

field.

the

The

function

this

function

(M)

the

current

If

the

found;

reenter

does

record (6),

line. However, if

mask,

or

be

contiguous. contains

search mask.

that

be

example,

and

the

search mask

on

the

of

the

Any

of

third

position

records

from

error

to

previous record

record

entire

data

the

search

the

search mask.

on

not

match

error

the

search

are identified by

The

specifica-

positions

more

are

used successful-

first record

field and CD

the

contained

the

occur.

same mask,

content

the stops

is

positions

The

mask

The

an

exact

The

blank

not

included

if a certain

256

of

the

direction,

not

checked.

read index

any

other

buffer

and

set

has

stops

and

REC

and

the

mask,

appears

data

in

and

that

in

the

SMITH was was initiated, it

SMITHSON (with SMITH in positions 1

a

match

encountered

If

the

displayed,

operation

the

if

To

reduce ping a search the

mask, it is suggested

fields

keyed

is

if

the

machine

SMITH.

machine

record can be

that

stops

the

operator

from

the

or

eliminate on

contain

record

in positions 1

possible

no blanks.

that

encountered

the

search

should

address

found.

the

that

where

possibility

does

the

through

the

machine may find

SMITHSON

with

the

continue

the

search

of

not

completely

search be

Search on Sequential Content

Search

on

sequential

but

is

faster. Search

just

as search

tent

only

when

the

search fields are in ascending

each succeeding record

preceding record). See Figure which can and

Having searching because

Search or

backward when the

If a search fails is

displayed. Failure

the

meet a search failure, a search the to

the

data

be

which

characters

the

search fields in ascending

on

sequential

direction;

the

search

record being searched.

record

is

in

the

requirement

same search mask.

index

track

set.

content

the

used

to

of

is

started

to

find

the

data

in

content

on

records in a

determine have higher values

the

content

to

order

is

similar

sequential

does. Use search

data

order

must

have a higher value

13

for

character

skipping

therefore,

at

the

find a record can

set

of

ascending

on

To

of

operates

a record can

a higher address

record

sought,

if

one

content

do

this

to

search

content

set

the

order

records.

or

more

order.

may

operations,

through

5 and

the

search

through

wrong

the

to

on

are arranged so

(the search field

collating

than

in

either

occur

be

5)

to

before

record

search

content

stopped

machine

match

performed

search

on

content,

requires a mask

sequential con-

than

sequence

values

others.

permits

a search (S)

records

Therefore,

faster

a forward

be

located

than

that

even

do

initiated

first

return

the

entire

be

it

to

see

stop-

on

that of

the

of

error

though

not

after

using

Occasionally,

length,

pf

the

This

is

keyed, searching that

the

of

the

tion

)

the

of

record

when

the

search

may

field in

the

record being displayed

because

and

record

a field

the

compares

for

the

data

blank positions

that

will

could

the

operator

searching

stop

machine

the

mask

that

in

not

satisfy

desires.

on

fields

on

a record in

takes

to matches the

mask

be

checked.)

the

mask even

For

that

are variable

which a portion

matches

the

mask, in

records in

the

identify

example, if a mask

the

mask.

(Remember

the

Therefore,

though

the

mask.

positions

data

set

positions

a por-

it

is

not

of

Select search enter

or

update

displayed

and

on

sequential

mode.

the

3741

content

When a

is

in

Operation Modes and Considerations 17

match

update

from

occurs,

mode.

the

read

the

index, record

is

EBCDIC

Order in

the

Sequence

1

(lowest)

2' 3

4 5 6 7 8 9 10 $ 11 12 13 ; 14 15 16

17

18 % 19

20 21 22 23 24 25

26

27

28

29

30 C

31

32 E

33 34 35 36 37 38 39 40 41 42 0 43 44 45 46 47 S 48

49 50 51 52 53 54 55 56 57 58 59

60 61 62 7 63 64

(highest)

Figure 13.

Collating Sequence

Character

81ank

¢

<

(

+

I

&

!

*

)

1

-(minus)

/

-

(underscore)1

>

?

:

#

@

(apostrophe)

=

"

A

8 0 F

G

H I

J

K

L

M

N

P

Q

R

\

T

U

V

W

X

Y

Z

0 1 2 3 4 5 6

8 9

Collating Sequence

Corresponding

Hexadecimal Number

40

4A 48 4C 40 4E 4F

50 5A 58 5C 50 5E 5F 60 61 68 6C 60

6E 6F 7A 78 7C 70

7E 7F C1 C2 C3 C4 C5 C6 C7 C8 C9

01 02 03 04 05 06 07 08 09 EO E2 E3 E4 E5

E6 E7 E8 E9 FO F1 F2 F3 F4

F5 F6 F7 F8 F9

Occasionally, when searching on fields

length,

the

search

may

stop

on

a record

of

the

field

in

the

record being displayed matches

This

is

because

keyed, and compares searching for that

the

of

the

record

tion

of

a field could satisfy

the

record SMITH was keyed in positions 1 was initiated, it SMITHSON (with SMITH a

match

encountered If

the

machine

played,

the

proper

operator initiate

to

the

see if

To reduce or eliminate ping a search the

mask, it fields

that

the

machine

the

data

that

blank positions

that

will

the

operator

is

possible

if

the

mach ine

SMITH.

stops

the

operator

can backspace a few records

record can be

should

perform a return

search

content

the

record can be

on

a record

is

suggested

contain no blanks.

takes

the

mask

to

records

matches

in

the

not

be checked.) Therefore, a por-

the

desires.

the

mask identify

mask even

For

through

that

the

machine may find

in

positions 1 through 5)

encountered

SM

search with

found,

If it

to

function

,using

found.

the

possibility

that

does

not

that

the

search be performed

Field Totals Mode (F)

Field

totals

can be used

times referred

that

require totals.

to

as

"hash

The

for

batch

totals",

3741 has

auditing, a process some-

or

two

capability: online and offline.

The

online field from records while entering or

verify mode.

obtain

totals

or

verified.

totals

feature

The

offline field

from records

can be used

the

records

that

have been

totals

HEXADECIMAL DATA

The

HEX key provides a

256

EBCDIC characters

are:

0,1,2,3,4,5,6, characters are two

hex

digits. Hexadecimal

entered

method

of

into a data

7,

8,

9,

A, B, C,

by pressing H

data

is

record. Valid hex digits

manner. HEX can also be used like a keypunch are sometimes be keyed

machine

different

in

a certain

except

from

order.

that

the

keypunch

characters

that

are variable

in

which a

portion

the

mask,

in

the

positions

in

the

data

set

mask.

(Remember

the

positions

though

it

is

example, if a mask

5 and

the

search

to

ITHSON

the

wrong record dis-

cannot

index

the

of

the

completely

for

other

kinds

in

feature

entering

0,

EX

and

verified in

multipunch

before

to

be

found,

function

same mask

machine stop-

match

applications

of

field

to

obtain

enter,

update,

is used

entered,

any

updated,

of

E, F. Hex

then

keying

the

same

key

see if

and'

totals

the

combined

and

they

mask.

not

of

be

it

the

on

to

on

a

must

(

18

MUltipunch

Operations

Example: Assume

the

display looks like this:

HEX can on punch

The with valid

11

the

(0

a

numeric

12

the

o Punch:

E key

9. If

then

a zero

twice

be

used

card

keypunch

to

hexadeci mal conversions.

important

11,12,

and

for

overpunching

Punch:

0 key

through

Punch:

C key and

0,

For

or

the

9).

field indicates a negative value.

For

and

then

the

numeric

press

the

do

not

use HEX, just press

with

a zero

resulting in no change

to

perform

machines. See

multipunch

0 punch.

numerics 0

the

11

punch,

dash

(-)

The

11

overpunch in

the

12

punch,

then

press

the

the 0 punch,

the

numeric

is

a 1,

the

6 key and

on a punched

then

the

equivalent

Appendix B for

operations

The

following

first press H EX,

key,

first press HEX,

numeric

first press H EX,

key procedure

the

from

are

through

and

then

the

(0

if

the

numeric

1 key. I f

the

0 key. (Overscoring a

card

punches

a single zero

of

mUltipunch

card

overpunching

procedures

9.

then

the

numeric

units position

then

through

is

to

9).

then

press

is 2 through

press HEX,

the

numeric

the

same hole

punch.

are

press

key

of

press

the

.....

The

first hex digit

is

a

O.

The

Assume

is

The

is

another

first

8 + 4 + 2 =

-

...

_

...

is

8 + 4 + 1 = 0

hexadecimal value

display looks like this:

..

...

_

.....

......

.....

......

hex

digit

E.

_

The

.....

...

.....

......

is

8 + 4 + 1 = 0

hexadecimal value

is

8

4

hex

8 4

8

4

2

and

DO.

and

the

is

second

hex

DE.

hex digit

~

)

Hexadecimal Display

When

hex

data

is

keyed

or

displayed,

represents displayable characters such as an A B C ...

o 1 2 3 ... When

character, a hexadecimal display the

eight

on) looks like this:

bit

code

the

for

hex

the

data

data.

keyed

not

is

not

is

provided

The

basic display

all

of

the

a displayable

that

represents

H

Other

lines are

the

EBCDIC code.

Bit Position Bit Position

0-

1

-

23-

4-

5-

6-

7-

----

added

to

the

HEX Value

-8

-4

-2

-1

-8

-4

-2

-1

display for each

of

Add

these

to

get

the

Only

add

gether

for

}

ed.

Add

these values

to

get

the Only gether ed.

add

for

}

bit

that

values

first hex digit.

those

values to-

the

I ines display-

second

those

values to-

the

I ines display-

data

or

(no

bits

is

on

together

hex digit.

DELETED

A record the of sector

If a record record as

delete can be preserved character character

and

in

delete a

acter

Station Operator's Guide,

When

mark address displayed in for must

To

record record

Index

press REC ADV.

RECORDS

is

identified as

data

address

the

record. This address

of

the

then

record

of

the

to

see if

mark

a 0 in

use

change a

must and

mode,

mark

a disk)

is

deleted,

deleted.

record,

or

D.

To

delete

of

the

data

press NUM

and

data

record

3741 reads a record, it

the

indicates

the

status

the

first position

the 6 error

deleted be

rewritten.

press REC ADV.

press FUNCT

either

deleted

which precedes

mark

not

part

of

the

data

address

Depending

the

first

automatically

record, press

SHIFT

automatically

record

to

record

on

character

a record

with

a

GA21-9131.

is a deleted

the

record

line. Since

of

the

identify

to a non-deleted

To

do

To

SEL

Operation Modes and Considerations

or

non-deleted

the

first

(one

of

two

data

and

is

mark

the

procedure

of

the

data

replaced

and

FUNCT

DELETE REC.

replace

0,

see

examines

is

the

data

deleted

this, key a

rewrite a record in

lower, press

with

preserve

SE L lower

the

IBM

3741 Data

the

record. If

deleted,

3741 does

record,

records.

character

in each

not

displayed.

identifies

used

record

the

first

To

first char-

data

address

the

data

a 6

error

not

the

operator

record,

change

M,

to the

and

by

the

to

is

check

the

then

19

Notes:

1.

In

the

Index

mode, a record

change

is

keyed

to

the

a D

in

the

first

position

record.

the

3747,

2. When record, first

address

position with to a attached preserving

If

see

Station Programming Reference Manual,

for

Diskette General

it

position

mark

in

an

error

be

processed

3742,

or

the

diskettes

IBM

3741 Models 3 and 4 Programmable Work

information more

3540,

examines

the

if a

3741,

the

information,

both

in

the

data

identifies a

data

condition.

by

other

data

set

the

procedure

first

data

are processed

on

deleted

Information

record

is

rewritten

record.

but

the

or

any

other

the

data

record for a

deleted

is

not

Therefore,

than

a 3741 Model 1

is

used as

for

character

by

records

see

Control

Manual,

That

record

a 3741 Model 3 or

even if

is,

the

record

is

not a deleted

system

reads a

address

record,

a D, a

input

deleting records

should

mark

D.

If

the

but

the

halt

will

if

the

diskettes

from a

not

be used.

GA21-9194,

requirements.

Records

in

GA21-9182.

or

directly

The

no

and

data

first

occur

2,

has

the

are

or

and

4,

Also,

IBM

When a hold non-deleted passing all is record vious record

When deleting a record, record function

Search Mode: Using

blanks

at and If

both

deleted

record

buffer

(next

record

deleted

encountered

is

read

buffer

is

performed.

the

current

the

first manual

the

record

the

search

the

current

record.

advance

sequential record

is

records

during record backspacing,

into

the

buffer

unchanged.

remains

DELETE

record

position.

at

the

operation

and

occurs

read

into encountered.

current

the

contents

unchanged

buffer

The

current

terminates

and a deleted

is

deleted),

the

current

If a

record

buffer

of

the

and

a record advance

REC

during

and

positions

record

buffers

record

the

record

deleted

the

deleted

with

the

record

record,

contain

is

in

record

the

pre-

mode

cursor

buffer

the

by-

Mode

Considerations

Enter Mode: Using

the

current first unchanged.

Update Mode: If,

record

deleted

record

transferred

record previous record

When

D in

content

Verify Mode: When selecting verify

track,

into

manual

is

read

buffer

record

advance

is

encountered

deleting

the

current

in

the

first

the

current

record

position.

will

to

the

for

DELETE

buffer

during

into

the

contain

is

in

the

occurs

the

buffer

a record,

record

current

nondeleted

record

Deleted

REC during

and

positions

The

previous record

update

current

during

is

record

the

current

record

not

the

first

buffer,

record

buffer.

record buffer,

same

update

changed.

"and

buffer

mode

record

character

Records

enter

the

cursor

buffer

selection, a deleted

the

deleted

buffer.

the

in

buffer

mode

remainder

remains

mode

the

data

record.

when

the

If a

is

changed

unchanged.

from

set

mode

at

is

a

record

deleted

the

of

the

is

read

blanks

the

is

to

a

the

index

not

RECORD

With

this

as

shown

BOE 01001

I

To

insert records

performs

for

the

number

deleted

have a D

002.

The

INSERT

feature, below.

Current

Record

Address

01005

an

operation

of

records in

in

position

remainder

FEATURE

you

can insert records

01006

Records

1

2

3

into a data

records

the

001 and a \ (inverse slash)

of

a

which

space

the

A A

set,

creates

to

be

created.

record

the

record

space in

inserted.

The

is

blank.

01005

within a data

EOD

10026

to

be inserted

insert

function

the

data

The

3741

deleted

records

in

position

set

EOE 15026

1

set

puts

If verify

the

non-deleted

I n

20

mode

currently

either

is

selected

displayed record

record

is

case,

the

from

into

record

update

or

is a deleted

the

current

buffer

is

verify

one,

record

blanked.

mode

the

buffer.

and

If

you

want

to

with sector

in

sectors

To create space from the

data

as

the

example

05,

05

through

the

current

set.

The

number

of

creating space for five records:

insert five records

the

3741 would

09.

in

the

data

record address

3741 moves these records as many sectors

of

records

to

on

track

put

five deleted records

set,

the

3741 moves

through

be inserted (up

01

the

last record

to

beginning

the

records

99). An

in

Update Mode

The

machine searches

Then

it reads records

rewrites these records

all

the

records,

fied disk address for

Verify

Mode

the

3741 adds deleted records

to

the

last record in

in

groups starting

at

their

new addresses.

the

number

the

at

this address· and

After at

of

records specified.

data

the

set.

moving

speci·

Last Record

in

Data

Set

10020

--------4.~~

1

0025~Last

in

data

after move

BOE

01001

Current

Record Address

01005

[

I

L...-----+---l

101005

0\0\

Space filled with

deleted records.

When using space between label.

That

have

40

sectors available, (from

set, an error occurs.

If

all

of

the

deleted records will be ignored when processing data. If

have deleted records,

error

which

Therefore, if enough space was

of

records not be used at

some

get

to

the

to

search for

other

0\

the

record insert

EOO

and

is, if

you

want

space created

you

the

3741 displays with each deleted record.

be inserted,

deleted record (6) error. Search

the

time.

--------'

010091

0 \ 0 \

function,

EOE

specified

to

insert

is

not

must

reset

not

you

will realize it

0\

when records will be inserted

there

50

E00

to

used,

the

specified for

must

in

the

data

records,

EOE)

in

remaining

deleted record (6)

when

on

content

be enough

set

but

only

the

data

the

number

you

do

record

set

you

can

The

Record Insert mode

is

in

the Verify mode. The 3741

mode before

Read Index Mode

The

3741 moves all records

mode. Then

address.

Search Mode

The

action

was

in

above.

When with deleted records, of

the

The

machine goes

you

were deleted record (6) error, goes hold buffer.

the

Record Insert mode

the

machine adds deleted records

taken

by

prior

to

selecting Search mode. See

all

the

records have been moved and

first record

in

previously.

the

of

to

the

update

cannot

machine

3741 returns

space created.

The

be selected while

must

be placed

is

selected.

in

the

data

set as if

depends

to

mode

regardless

machine also displays a

to

program

in

at

on

the

one

of

the

space filled

the

disk address

of

0,

and blanks

the

in

Update

the

mode

the

3741

BOE

it

mode

the

Record Insert Mode Characteristics

Enter Mode

No

records are moved create a space within want

to

add later. Deleted records are added starting

the

current

specified.

disk address

in

your

for

this

data

mode

the

set for records

number

but

it allows

of

records

you

to

might

at

Operation

Modes

and

Considerations

21

ADDING RECORDS

operations,

Verify counts

can indicate are missing have

to

be

added Records become been keyed.

The the (by using search position in last record in presses REC data added

Some sensitive. tive with

available

easiest

end

of

can

to

data

data,

the

may

way

the

be

the

sets

To

the

Disk

may

be

somewhere

also have

after

to

batch.

EOD

data

the

data

ADV

entered.

data

may

handle

following

Copy

batch

add

to

set.

TO

A BATCH

control

that

records are missing. Records

added

to

the

records To operation)

set. When

set

get

to

The

consist

addition

procedure

feature.

totals, and

to

the

end of

the

in

the

middle

be

added

to a batch

batch

to

which

to

a batch

do

this,

the

operator

to

the

end

the

search

is

displayed.

the

missing records can

of

records

of

The

that

records

can be used

to

3747

batch,

of

the

if

they

belong has

is

to

add searches

of

the

is

finished, operator

then

are

sequence

on

record

or

batch.

they

them

data

where

be

3741 's

that

may

the then

sensi-

to

DATA

RECOVERY

The

most significant recovery

re-establish

data

label

•

The data mode, returned

•

The before

displayed

was pressed.

Recovery

is

a simple

If

the

procedures should assist

the

for

the

set.

The

old EOD address

under

the

operator

set

that

performed

to

operator

return

on

of

the

data

EOD address

data

set

EOD address

following conditions:

inadvertently

contains

at

the

index track.

removed to

index

the

status

data

sets original EOD address, if

set

label modification

is

by

finding

currently

least

the was pressed

line

not

known,

in

determining

the

step

in

data

of

the

partially

is

destroyed

selected a

valid

one

record advance

diskette

when

RETURN

one

last record

data

data,

from

or

before

of

the

of

the

recovery

of

is

to

destroyed

on a data

set selected

the

EOD field.

following

EOD address

the

set

label

of

enter

and

then

disk drive

X R was

TO

INDEX

known,

data

set.

a

Determine

1.

be inserted, according

Insert

2.

into

3.

Insert a scratch

onto

4.

Press FUNCT

5.

6.

Press FUNCT shift address

you

7. Press FUNCT shift

8. When

have been copied

displayed.

Enter

9.

10. Press FUNCT shift

remainder

11. When and

22

the

diskette

the

disk 2 disk drive.

this

diskette)

key, press SEARCH ADDRESS,

of

the

wish

to

key,

and

the

address

the

records

key,

and

of

the

copy

RETURN

proper

address

to

the

from

which records will be copied

diskette

SEL

press COPY.

SEL

press COPY. This

the

is

TO

(the

into

the

lower

and

upper

and

lower, hold

record

after

to

write.

upper,

hold

entered onto

to

records still

complete,

INDEX.

disk 1

be

added.

upper,

is

hold

at

which records

sequence

records wil!

disk drive.

ENTER.

DISK 2 RET TO INDEX.

down

reached, all

except

on

press FUNCT

the

down

step

disk 2

of

the

key

address

the

for

the

copies

onto

data.

be

copied

numeric

in

the

at

numeric

the

records

the

record

numeric

the

disk

SEL

must

which

lower

Procedure 1:

• Modify estimated

• Execute a search EOD record displayed. If as a valid record record, using a higher record data the

Procedure 2:

• If

field in

and perform a search last record as the

When following:

1. Press R

2.

1.

3.

the

EOD field

EOD address.

return

to

estimated

is

not

recognized as a valid record

set, press record backspace until

data

set

is

found.

the

last record

the

data

the

last record

the

last record

Write

Perform a

EC

down

entered

ADV.

the

return

in

the

data

operation

the

displayed record

within

the

data

the

index

track

EOD address. If

content

set

search mask. When

is

known,

label

to

the

on

content

should be displayed.

of

the

data

set

address.

to

index

operation.

set label

and

set

and

EOE address plus

operation

is

examine

but

is

repeat

the

modify

the

found,

with

the

is

recognized

not

the

procedure 1

the

displayed

within

last record in

the

using

search stops,

perform

an

last

the

EOD

one

the

4.

Modify recorded address.

5.

Execute

address.

6.

If valid corrected.

On

occasion, an disk drive before pressing RETURN TO INDEX. When this happens, will

not

is

updated

ed.

The

situation.

BAD

SPOTS

If a record

copy

function

then

manually key

depend

Enter

diskette.

new records and clear itself; if set (see Adding Records to a Batch

the

EOD field in

a search EOD

the

operator

data,

the

operator

there

is

be

correct

is

preceding

on

mode -return

when

the

ON

DISK

cannot

can be used

the

mode

Verify

then

record advance

not,

delete

because

procedures

be read from

the

data

set label

operation

had originally keyed over

records should be examined and

will remove a

the

possibility

the

only

return

to

should also be used

to

copy

bad record.

the

station

to

index and

or

Update

the

record and add it

to

diskette

that

time

index

function

or

written

surrounding

Alternate

is

in

when

continue

mode

- backspace several

to

see if

in

this

validate

currently

from

the

EOD address

that

the

is

onto

methods

the

error

the

problem

to

section).

with

the

address perform·

for

disk,

data

batch

the

and

occurs:

the

EOD

the

this

the

on

wi

data

• For

all

other

modes,

found

record

When

the

no record

appropriate

3741

copy

Follow recovery copying. record

tive

diskette

Seek (3)

A seek

is

defective. When

returns depending persists, all

of

Guide,

a

procedures in the

II

seek

the

diskette

defective.

copy

Data

Station Operator's Guide,

procedures.

the

procedures

when

the

Be

sure

found

error

should

Error

error

occurs

to

the

index

on

the

perform

the disk.

GA21·9131 provides

The

the

error

occurs while copying.

on

which

The

defective

the

error

is

found

operation

in

no

record

to

identify

occurred

be

initialized.

when

the

seek

track

mode

the

appropriate

record read prior

displayed.

error

persists,

to

copy

the

operator's found

error

the

diskette

as being defective.

the

address

error

occurs,

or

remains

of

operation.

copy

GA21·9131

within

perform

data.

guide

occurs on

which

that

identifies a

the

When

the

operation

to

for

3741

IBM 3741 Data Station Operator's

copy

procedures.

operator's

the

diskette

guide for

seek

error

Be

occurred

should

recovery

sure

to

as being

be initialized.

the

The

IBM

provides

error

while

The

data seek

to

Follow

identify

no

the

no

defec·

track

either

set error

copy

the

when

The

following are recovery procedures

3,4,

and

errors 2,

No Record

A no record found identifies

• If

•

the

error

mode,

the

error

update

mode,

key

space

For

verify

found

error

not

the

The

operator

of

the

current

displayed

verified.

current

5 persist.

Found

(2)

Error

error

occurs

location

occurs

display

occurs

was pressed remains displayed.

mode,

after

of

a record

when

is

blank.

when

the

record displayed

the

record

occurred

can reset

is

the

record being verified- and displayed. '

the

record, and press R

pressing R

to

follow

when

the

address

on

disk

is

defective.

record advancing in

record backspacing in

when

the

on

which

the

no

to

be verified

error,

EC

complete

ADV

EC

is

ADV.

the

record just

verification

The

when

disk

that

update

enter

or

record back·

record

Disk Read (4) Error

error

A disk read

the

entire record read

which

the

portion persists be performed

Note:

occurred

record being verified can reset and

read

If you can correct

(5) occurs,

it should be read

For

then

error

or

after

is

the

press R

the

occurs because a

read

error

all

of

the

being reset several

to

try

verify

mode,

the

EC

occurred

identify

data

and press record advance. If no

the

record has been

properly.

is

in error. However,

occurred

record

and

record

and

ADV.

is

then

what

is

in

correct

the

record

to

be v.erified,

displayed.

complete

The displayed.

data

is

portion

displayed even error.

times,

the

verification

record

incorrect

written

of

If

the

following can

error.

on

which

not

Therefore,

on

which

in

to

disk

the

record

though

read

the

of

the

record,

correctly

record,

error

read

current

operator record

the

write

or

on

a

error

and

Operation Modes and Considerations

23

If a write

the

perform a delete

operation

the

If record operation

then

and which

sector

end

the

delete

cannot

manually

sector

the

error

does

is

probablY defective. Reset

record

is

successful (no

of

the

data

record

be

added

can be used

key

address

error

occurred.

Disk Write (5) Error

write

error

A correctly. record

(no

ful

occurs

When a

operation.

write

error),

set.

If

the

delete

record

cannot

copy

operation

and

then

track

and

on which

be

added

can be used

manually key

sector

address

the

error

initialized.

occur

operation.

set.

operation

to

copy

in

the

record.

on

the

external label

when

write

error

If

the

delete

add

the

operation

to

in

the

on

occurred.

after

pressing record advance,

the

write

If

the

delete

write

error), add

is

not

successful,

the

end

of

the

data

the

surrounding

Be

sure

to

of

the

The

diskette

a record

is

should

not

written

persists, perform a

record

operation

record

to

the

end

is

not

successful,

the

end

of

the

data

to

copy

the

surrounding

record.

the

The

Be

sure

external label

diskette

should

the

or

set,

data

write

diskette

be

of

or

set,

to

of

error

and

record

to

if

the

copy

and

the

track

on

initialized.

on

disk

delete

is

success-

the

data

if

the

data

write

the

diskette

be

CE MODE

CE

mode

is

used

by

the troubleshooting describe points

how

out

Pressing FUNCT machine in positions

how

38,

the

this

it

CE

39

the

equipment.

mode is

entered

SEL

mode.

and

40.

Pressing RESET several index

mode

with

the

machine leaves CE 3741 may The

indicator used

should be checked

CE

when

be

changed and

mode

field

CE

may

of

the

mode

and

modify

data

was selected.

customer

works

and

lower,

NUM

The

times

returns

label from

mode,

the

therefore

the

set

label for

corrected

engineer when

This manual does

or

how

it

is

used

how

to

get

out

shift, and C

status

line displays CER

the

machine

sector

08

displayed.

program

buffers

should be

EOD field and

the

data

Therefore,

if in error.

testing

not

but

merely

of

the

puts

the

to

of

checked.

the

verify

set

being

those

or

mode.

in

the

After

the

fields

24

IBM 3741 Data Station Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual