IBM System 360, Model 30 Operating Manual

Systems Reference Library

IBM

System/360

Operating Guide

Model

30

File

Number

Form

8360-01

A24-3373-2

This

reference

the

IBM 2030

Keyboard

additional

devices,

Bibliography,

(attached

information

refer

publication

Processing

to

the

for

to

the

publications

Form

A22-6822.

describes

Unit

and

IBM

8ystem/360

operation

operator

the

of

listed

IBM 1052

Model

the

various

in

the

procedures

Printer

30).

For

input/output

IBM

8ystem/360

for

Third

Edition

This

is a

released

Form

Number

reprint

in

the

of

A24-3373-1

following

Pages

Technical

Affected

incorporating

Newsletter.

~

changes

N24-0390

Significant contained

subsequent

Copies This Publications, Address

@)

International

ii

of

this

manual

comments

changes

in

this

revisions

and

has

Dept.

20

or

additions

publication

or

Technical

other

IBM

been

prepared

171,

regarding

Business

to

will

publications

by

P. O. Box

this

publication

Machines

December

the

specifications

be

reported

Newsletters

the

IBM

6,

Endicott,

Corporation

in

can

be

Systems

to

28,

obtained

New

this

1965

1966

through

Development

York

13760

address.

IBM

Branch

Division,

Offices.

Product

CONTENTS

IBM

SYSTEM/360

MODEL

30

OPERATING

GUIDE

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

5

IBM

2030

System

Control

Panel

. . . . . . . . .

..

6

Operator's

Control

Panel

(OC

P).

. . . . .

..

6

Console

Controls.

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

..

9

Operation

Controls

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

10

Push

Buttons

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

12

Displays

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

14

Use

Meters

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

18

SYSTEM

OPERATIONS

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

19

System

Power-On

and

Power-Off

.......

19

Program

Load

Routine

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

19

Dis

play

Information

From

Storage

. . . . . .

20

Store

Information

into

Storage

. . . . . . . . .

20

Single-Instruction

Processing

.........

24

Single-Cycle,

Display,

and

Store

Operations.

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

24

Processing a Program

Section.

. . . . . .

25

Starting

at a Specific

Instruction

(Set

IC)

Procedure

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

25

Manual

Intervention

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

27

Microprogram

Test

Routines

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

27

Basic

Test

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

27

Display

Read/Write

Storage

...........

27

Alter

Read/Write

Storage

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

28

Alter a Block

of

Read/Write

Storage

.....

28

IBM 1052

PRINTER-KEYBOARD

..........

29

IBM 1050

OPERATIONS

....

37

EXTENDED

BINARY

-CODED-DECIMAL

INTERCHANGE

CODE

(EBCDIC)

.........

41

GLOSSARY

OF

TERMS

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

44

INDEX

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

46

iii

Figure

1.

IBM

System/360

Model

30

with

IBM

1052

Printer

Keyboard

4

IBM

SYSTEM/360

The

IBM

System/360

state,

high-speed

compatible described tion,

--The processing

Form

operator

with

the

in

IBM

A22-6821.

(turning starting a program) control

board tion

panel

can

be

between

(console).

added

the

operator

documented.

MODEL

Model

data

processi~g

other

models

System/360,

controls

power

are

needed

on

contained

The

to

the

system and

30

OPERATING

30

(Figure

of

Principles

for

and

off

IBM 1052

so

the

system

1)

is a solid-

system

that

System/360

of

normal

and

loading

on

the

2030

Printer-Key-

that

communica-

can

GUIDE

is

as

Opera-

program

and

system

be

5

IBM

2030

SYSTEM

The

IBM

2030 with a number that

permit

modes, tion. on a panel system neer's

console

Panel tons,

indicators. the

panel, Processing all

controls

and

These

control

panel.

is

(OC

three

operation

observation

indicators

(Figure

designated

P).

16-position

Except

the

Units)

and

problem-program

CONTROL

Central

of

indicators

2)

console

The

lower

This

section

for

OCP

is

in

indicators

processing.

PANEL

Processing

and

of

the

system

of

the

and

controls

that

serves

and

an

right-hand

as

the

Operator's

contains rotary the

nomenclature

identical

System/360.

necessary

Unit

manual

in

results

are

as

both

IBM

Customer

portion

four

switches,

on

all

CPU's

The

for

is

provided

controls

any

of

any

assembled

an

operator's

of

Control

push

and

printed

OCP

normal

several opera-

Engi-

the

but-

six

on (Central contains

I/O

devices. sequence units.

Note:

The applying output

1.

devices:

Press

light

2.

Set

3.

Press

4.

Turn

5.

Set

depends

follo\\ing

or

removing

the

to

come

the

Rate

the

power

the

Rate

The

2030

time

on

the

procedure

Stop

on.

switch

Start

on

or

switch

required

number

electrical

key

to

the

key.

off

on

the

to

the

for a power-on of

on-line

must

be

power

and

wait

for

Single-Cycle

I/o

unit.

Process

I/O

used

when

to

input/

the

l\lanual

position.

OPERATOR'S

This

section

has

the

following

Power-On

The I/O

units reset not

the

are

reset. on. storage turbed. and

restored

Key

power-on

starts

function

general-[Xlrpose

as

The

CPU

so

that

Hence,

storage.

The

I/O

If

power power-on On taken reset.

light

for

cannot

sequencing

remains

that

The

CONTROL

of

the

2030

controls

sequence

when

occurs.

are

any

clock

information

system

without

units

are

be

brought

off)

unit.

po\ver-on

PANEL

console

and

for

this

key

All

data-flow

or

floating-point

priorities

is

reset

in

power

destroying

sequenced

up

is

interrupted

until

corrective

All

on-line

sequence

(OCP)

(lower

indicators:

the

CPU

is

pressed.

that

to

prevent

storage

can

information

ON

for a unit,

I/O bypasses

right

and

all

registers

happen

access

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be

turned

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by

further

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action

units

corner)

on-line

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system

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main

one.

Power

is

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6.

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tion.

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procedure

cycle

in accessed. nel

that

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contents

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power

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the

line

continue

any

channel

on.

Power-Off

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I/O

units.

altered

if

\!.,Trite forced just

during

a

storage-read

indicator

to

read

the

console

ensures

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might

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to

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removed

maintenance

terminators

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operations.

must

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key

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any

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power

power-off

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storage

caused

does

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be

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long

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last

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last as

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CPU

storage

operation.

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the

contents

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lost.

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on

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the

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recommended

1.

Press Manual attached

enter

2.

Press

Emergency

The

Emergency electrical units)

with

of

storage

As

the

name

should

be

used

manually

The

system switches. environment

power. system

Contact

power

Key

key.

the

light

I/O

the

manual

the

Pull

power

no

regard

may

implies,

reset

If

the

is

cannot

conditions

is

operated.

are

lost

key

power-off

console

to

come

units

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do

state.

Power-Off

Switch

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Switch

(including

to

be

altered

the

only

if

necessary.

by

the

is

protected

temperature

too

high,

the

Customer

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are

reset

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takes

precedence

procedure

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and

wait

on.

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Stop

not

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the

)

key.

removes

power

to

all

sequencing.

if

this

switch

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by

these

thermal

of

the

switches

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operating

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maintained.

when any

over

for keys

system

all

primary

on-line

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is

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switch

overload

drop whenever

the

pending

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the

is:

the

on

to

I/O

contents

operated. Switch

must

system

the

Test

Indicator

The

Test Check set

to

Load

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This

indicator

and

released.

program

PSW

is

Load

Key

This

key

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1.

An

2.

The

3.

The This

4.

The all storage.

light

Control,

Process

is

successfully

set

into

is

used

functions

automatic

CPU

basic

test

clear

the

flag

is

on

ROS

(normal

turns

It

remains

circuitry).

to

initialize

occur:

System

clock

is

test

microprogram

is

looped

UCW

bytes

whenever

Control,

the

or

processing

on

when

the

on

until

completed

See

the

Reset

started.

128

times.

microprogram

in

the

UCW

Address

Rate

switch

position).

Load

the

load

(the

the

Load

system.

is

performed.

is

performed.

is

run

area

Compare,

is

key

is

pressed

micro-

initial-load

Key

The

to

reset

of

auxiliary

not

section.

f01-

System

This

indicator

the

use

section.

Manual

This

light

and

that

as

the console is

on.

\Vait

Indicator

When

this

no

instruction occurs, program.

(SYS)

meters

)

(MAN)

indicates

no

channel

System

controls

light

processing

Indicator

is

normally

is

running.

Indicator

that

operation

light

is

off).

are

effective

is

on,

the

processing

is

initiated

on

(See

the

CPU

Several

CPU occurs.

whenever

the

clock

is

in

progress

of

only

when

clock

If

as

required

either

Use

Meters

is

stopped

the

manual

this

is

running

an

interruption

by

of

(as

lamp

the

long

but

5.

The analyzes address (load-unit pleted, been turned

Note

that

key

is

pressed.

is

then

Interrupt

When

this

the

external external nizes

this

Switches

These

rotary

operator

load

microprogram switches

of

address).

the

successfully

off.

the

system

effective

Key

key

is

old

interruption

F,

G, H,

switches

for

the

G,

the

program-loading

Initial

Program

set

mask

The

system

as

soon

as

pressed,

PSW

is

altered

is

pending.

only

and

J

are

following

is

begun.

H,

and J to

\Vhen

this

Load

up,

and

the

is

reset

mask

the

IPL

the

interruption

to

indicate

The

if

programmed

normally

operations:

This

determine

I/O

routine

(IPL)

Load

when

in

the

PSW

system

used

routine

device

is

PSW

light

the

load

IPL

is

set

code that

to

by

the

com-

has is

PSW

up.

of

an

recog-

do

so.

8

1.

Manual a ROS

2.

Manual and

3.

Manual

storage

~

described Switch F is tions

(see Feature, particular tions

(see bility

Feature,

address

J).

The

functions

in

also

IBM

Form

significance

IBM

alteration

(F,

entry

of

entry

of a

or

into a data-flow

detail

in

used

System/360

A24-3255).

System/360

Form

CONSOLE CONTROLS

The

manual operator seyeral

controls

to

initiate

modes,

and

system

to

operations.

Note:

Storage main-storage initiated

to

ensure

from

that

Protection

alteration

the

console.

useful

altered.

Data

and

Address

Eight

rotary entering of

data

these

sixteen-position

hexadecimal

A,

B,

C,

and D are

manual

age, switches register Switches

operations

or

to

are

and

F, instruction address, These system

or

four

through

These

set

address,

switches

Entry

switches

or

addresses

digit

(four

used

involving

up a compare

connected

to

the

compare

G, H,

and J are

enter

manual

the A-and

are

of

an

G,

H,

the

load-unit

byte

of

these

other

sections

for

1400

Model

for

1620

Model

A24-3365).

on

the

2030

operation

perform

is

or

display

Care

data

is

Swit

are

provided

into

switches

bits

plus

to

enter

address.

to

the

(match)

a ROS

address, a load-unit

data

are

connected

B-registers.

normally

instruction

and

information

register

four

compatibility

address

J).

address

switches

of

this

1400

Compatibility

(G,

into

(H

and

are

manual.

opera-

or

H,

main

J).

Switches F and G have

compatibility

30,

console

display

not

effective

1620

in

permit

any

and

during

opera-

Compati-

the

of

store

operations

must

be

exercised

not

unintentionally

ches

for

manually

the

system.

provides

parity).

an

address

main

or

auxiliary

main-storage

Switches

These

Each

one

for

stor-

four

address

circuits.

used

to

set

up

an

into

the

system.

to

the

data-flow

used

as

follows:

Switch

A,B,C,D

F,G,H,J

G,H,J

H,J

The

specific

switches

are

detailed

publication.

Switches F and G also

the

1400

and

1620

Display-Storage

This

control

from

(or

do

not addition, into

any

The

dual-concentric

to

access

shown

Use

described

can

store

have

full-time

proviSion

main-storage

the

registers

on

the

dial

of

the

Storage-Display

in

the

into

section.

~s

MS

\ I

~

0

v"

0

/I

5

')

Figure

3.

Display-Storage

Function

A

stop

or matched the

Main

(MSDR)

ter

(WX),

A

main-storage

store

or

An

instruction-Start ROS-Start operation.

The

load-unit

and

channel

the

program

A

data

byte

or

auxiliary

data-flow

functions

in

various

compatibility

Selection

be

used

to

certain)

indicators

is

made

or

auxiliary-storage

rotary

and

(Figure

Display

"'TI

-i

~

3).

and

restart

against

Storage

or

the

display

address

is

to

be

storage,

register.

provided

sections

have

functions

features.

Dial

display

system

on

to

display

switch system

Selector

Store

Selection

address

the

contents

Data

Register

ROS

address

operations.

address

for a manual

(I/O

from

to

be

loaded),

loaded

or

by

these

unique

information

registers

the

console.

from

labeled E is

control

switch

Operations

Switch

to

for

device

which

into

eight

of

this

that

or

location.

points

be

of

regis-

manual

or

a

main

a

to

In

store

used

is

9

OPERATION

Four

rotary

any

of

several

these

controls

Customer

useful

light

the

Process

Rate

The control

to

the

is

on

Switch

three

are:

Engineer,

if

modes

Instruction

When

the

Rate

plete

instruction interruptions) is

pressed. the A-and next

instruction.

identical

is

pressed.

I/O pleted is

pressed next

to

If

an

input/output

instruction

before

instruction

CONTROLS

control

modes

are

normally

programmer

these

four

position.

of

Step

(INSN

switch

(including

is

executed

After

the

B-registers

The

the

stop

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18

SYSTEM

OPERATIONS

SYSTEM

Power system successfully line cannot

Panel

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all

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PROGRAM LOAD ROUTINE

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brought

If

power

an

I/O

unit

power-on

the

Operator's

which

the

(Refer

to

publication

I/O

is

contained

must

apply

read

feed

described

deck

in

key.

to

read

up

during

cannot

that sequence

program

the

appropriate

for

unit

be

initialized.

to

all

by

for

the

read-feed

the

a

be

is

on-

Control

is

infor-

involved.)

in

card

performing

the

par-

program

Tape

I/O

Unit

When a magnetic

the

problem

•

Open

reels

•

Place

the

•

Thread the

•

Wind well

•

Close

•

Press

The

tape

called

Console

With

the

load

unit

1.

Set the

H, channel address

program:

the

and

the

left

reel

the

take-up

the

past

the

unit

on

by

the

Operation

system

set

up:

the

address

program

and.J

(see

address

in

tape

is

Preparation

tape

unit

door

read/write

tape

reel

hub

and

tape

along

reel.

until

the

read/write

access

door.

load-rewind

now

ready

program-load

(Program

power

to

of

be

on

the

loaded

Figure

is

switches

is

being

for

assembly.

containing

lock

it

the

load-

head.

key.

to

be

Loading)

and

the

I/O

load

in

2,

OCP

set

in

s'vvitch G;

Hand

used

access

the

in

place.

tape

path

point

used

routine.

appropriate

unit

rotary

section).

J.

to

the

program

and

marker

as

input

that

switches

the

load

tape

on

onto

is

when

I/O

contains

G,

The

unit

Disk

I/O

Unit

Preparation

When

the

program

disk

unit:

•

Turn

the

•

allows

Place

the

program drive

start

The

disk

storage

is

on.

is

to

disk-drive

device

disk

pack

on

the

disk

key.

unit

be

meter

to

be

containing

drive

is

ready

loaded

switch

used

and

when

from a magnetic

on.

This

for

input/output.

the

desired

operate

its

the

ready

light

disk-

2.

3.

Make

sure Compare, in

the

PROCESS

center

section).

portion

off

only

the

PROCESS

Press

the

2030

console.

OCP

section)

pressed,

has

been

new

PSW

that

and

(see

Figure

when

all

position.

Load

turns

and

it

completed

has

been

the

ROS

Check

position

The

2) of

four

key

on

The

Load

on

turns

(when

completed).

Control,

Control

(see

Test

light

the

of

these

the

OCP

light

when

off

after

the

switches

Figure

20:30

switches

portion

(see

the

Load

the

loading

Rate,

on

the

console

Figure

load

Address are

2,

right

OC P

are

of

key

routine

of

the

all

is

in

the

2,

is

19

A

system

is

pressed.

looped

128 automatically storages. the

contents

program

reset

is

initiated

The

Basic

Test

microprogram

times. A microprogram

It

is

loaded;

resets

mayor

of

core

the

may

storage

this

UC\V's

not

into

is

dependent

when

in

be

necessary

which

the

(ROS)

the

multiplexor

the

upon

Load

program.

After

the

will

proceed loaded this.

Therefore,

the

program

to

be

taken.

the

wait operating action

is

1.

Press light

2.

Load F,

using

section

3.

Press instruction

program

immediately

is

written

determine

If

the

state

after

procedures

to

be

initiated:

the

Stop

on).

Wait

an

instruction

G, H, and J

the

set-IC

of

this

the

start

address

has

unless

in

sue

h a

system

operating

what

system

the

program

may

key

to

enter

for

the

address

into

IC

key

(see

publication).

key

to loaded.

been

loaded,

the

manner

subsequent

is

programmed

has

indicate

that

stopped

system

from

(Instruction

IC

in

start

processing

program

as

to

prevent

procedures

action

been

the

state

light

to

rotary

Counter)

the

Push

DISPLAY INFORMATION FROM STORAGE

The

contents when the

OCP

CPU

Figure

on,

indicates

has

been

cycle

the

status

has

of

any

byte

CPU

clock

is

stopped

is

on)

and

the

Allow-Write

3)

section

is

off.

of 2030

The

Allow-Write

that a read-from-storage

completed

not

been

but

performed.

of

storage

console--Part

that

the

can

(the

Manual

indicator

indicator,

associated

be

operation

key

is

then

to

clear

new

the

and

is

to

go

loaded,

following

(Manual

turn

off.

switches

buttons

at

the

dis

played

light

on

(in

2 of

when

write

to

by

3.

Set

(switch upon is

to

portion

4.

Place

switches

Note:

If

set

rotary

the

desired

If

auxiliary

is

then

set

5.

Press Figure

6.

Make STOR

storage), the display

7.

The displayed (Part address set rectly.

The

8. displayed indicators

9.

When stop the

operator SINGLE-CYCLE and

10.

Only when should

STORE

INFORMATION INTO STORAGE

the

rotary

E) whether be

used

of

the

address

A,B,C,

a

byte

switch A to

MPX is

used,

in

switches

the

2).

sure

(main

is

right

of

(see

address

in

2 of

Figure

desired.

up

rotary

)

data

stored

in

the

system

key

does

turn

on

all

system

display-storage-select

to

the

MS

or

AS

Main

Storage

in

this

operation).

Figure

of

2.) of

and D

auxiliary

LS

the

(Figure

storage

(for

desired

(multiplexor)

the

address

C and D.

display

that

on

the

key

the storage) on.

These

the

main-storage Part

2 of

of

the

accessed

the

main-storage

3). (You

switches

in

the

main-storage

the

2030 and

not

allow a display

should

to

turn

manual

the

preceding

reset

(lower

appropriate

or

A UX STOR

indicators

Figure

Make

may

A,

addressed

console.

wait

set

the

off

light.

be

performed.

position

or

Auxiliary

(See

byte

2).

is

to

Local

Storage)

storage

of

the

left

section

indicator,

address

3).

location

address

sure

this

inadvertently

B, C,

and D incor-

location

data

lights

are

of

rate

switch

the

system

nine

items

switch

(depending

Storage

lower

in

rotary

be

displayed,

or position. desired

of

MAIN

(auxiliary

are

just

register

is

then

register

is

the

have

is

register

on and

storage,

to light

fail,

to

byte

to

the

Procedure

The

contents

played

that

the

essing

1.

Press

console--Figure

the

pending

2.

After cator

when

test

is

in

the

current

the

is

of

any

storage

the

following

light

is

progress):

stop

key

instruction

interrupts

system

off

and

the

out

2).

have

stops,

position

procedure

and

normal

(lower

The

is

been

the

manual

can is

program

left

portion system processed,

serviced.

allow-wrIte

light

20

used

stops

is

on.

be

of

and

dis-

(assume

proc-

2030

after

all

indi-

Store

operations

That

is,

the

be

altered

manual

light allow-write off,

the

store

see

Figure

storage

cannot

Procedure

To

store a byte

1.

When pressed), the

manual

contents

if

the is

indicator

key

2)

is

be

the

system

the

are

similar

of

allow-write

on

(C

PU

is

(on OC P

interlocked

altered.

into

storage:

stops

allow-write

light

is

on.

any

clock on

or

section

to

display

poSition

indicator

stopped).

the

manual

so

that

(stop

key

indicator

of

is

2030

the

has

operations.

storage

off

If

light

can

and

the

is

console,

contents

been

is

off

and

the

of

2.

3.

Select the

rotary (switch into

Main

into

Auxiliary

Figure

Set

the into

rotary

the

area

of

storage

display-storage-selection

E).

Use

the

MS

Storage

and

Storage

the

(see

2).

address

of

switches

the

selected

A,

(to

position

AS

position

lower

B,

C,

be

byte

and

altered)

switch

for

storing

for

section

of

storage

D.

with

storing of

compatibility cedure

from

as

described

Storage

sections.

of a

particular

1.

Set

rotary

auxiliary

modes).

and

Use

this location

switch A to

storage

in

Store

section

Follow

the

Display

Information

to

determine

in

auxiliary

the

(Figure

the

appropriate

Information

desired

5):

in

Storage

the

storage.

area

pro-

address

of

Note:

~ge,

Storage)

If

you

set

or

position.

to

be

used

4.

Set

the

rotary

tation

5.

Press portion).

6.

The

data

main

storage

2030

console.

played

storage

of

Figure

sure

the

desired

Addressing

In

most

instances,

or

display descriptions, reference. are

not

applicable

or

used

only

are rotary

to

the

Then

in

auxiliary

byte

switches

of

byte).

the

store

byte

address

3).

correct

location.

Bytes

in

auxiliary

however,

The

in

special

going

to

store a byte

switch A to

desired

set

switches C and D to

MPX

storage.

of

information

Hand J (hexadecimal

key

(see

Figure

to

be

stored

data

register

The

address

is

stored

Check

of

you

is

displayed

register

these

data

is

AUxiliary

will

have

indicators

entered

Storage

storage.

are

provided

other

areas

of

to

operator

use,

situations

into

l.S

(for

Local

(multiplexor

the

to

be

stored

2,

lower

is

dis

played

indicators

at

which

in

indicators

onto

no

need

The

following

here

auxiliary

or

not

(such

as

auxiliary

storage)

address

in

represen-

in

on

the

dis-

the

main-

(see

Part

to

make

the

to

store

for

storage

used,

for

left

the

2

Figure

5.

Rotary

Switch

A

21

Switch A Setting

MPX

0

Auxiliary

Multiplexor trol

Storage

Words 0 through

Accessed

Channel

Unit

31

Con-

The

desired

register

is

specified

Switch D Setting

byte

in

by

the

selected

switch

floating-point

D

as

follows:

Selected

Byte

MPX

MPX2

MPX3

MPX4

MPX5

MPX

LS

Note:

The

lVIPX 1 and

that

have

MPX

3,

on

2030' s (with

that

have

1

6

MPX 0 setting

MPX 2 settings

16K

or

more

MPX

4,

MPX

32K

the

224

subchannel

Multiplexor Control

159

Multiplexor

trol

Multiplexor

trol

Local

or

Words

\Vords

Words

':Vords

Words

Storage

is

on

main-storage

5,

and

more

main-storage special

Channel

160

Channel

192

all

2030

are

MPX 6 settings

Unit

32

through

Unit

64

through

Unit

96

through

Unit

128

through

Unit

through

Unit

through

consoles.

on

all

2030} s

addresses.

feature.

63

95

127

Con-

191

Con-

223

are

addresses)

8 0

9 A 2 B 3 C

D E 6

F 7

In

all

floating-point tained characteristic 7

contained point 1,2,3,4,5,

CPU-Registers

During are or

1.

in

the

of

byte

O.

In

short

in

formats,

multiplexor-channel

temporarily

store

in

this

Set

switch C to

high-order

is

contained

floating-point

bytes

1,

2,

the

fraction

6,

and

7.

Stored

stored

area:

5.

formats,

bit

formats,

and

in

Local

in

loeal

1

4 5

the

sign

(bit

0) of

byte 0 and

in

bit

positions 1 through

the

3.

In

long

is

contained

Storage

operations

storage.

is

fraction floating-

by

bytes

CPU

To

con-

the

is

registers

display

2.

Set

rotary

3.

Set

the

desired

C

and D as

General-Purpose

C'JBneral-purpose by

setting

equivalent

The

ter

is

switch

Floating-Point Selection

Floating-point lected tively.

22

switch C to

(0

for

desired

specified

poSitions 0 through

registers

by

setting

switch B to

byte

described

Register

registers 0 through

register

byte

by

switch D (bytes 0 through 3 by

Register

switch C to

in

the

O.

address

in

the

Selection

eorres 0, F for

selected

3).

(Special

0,

2,

0,

in

following

ponding

register

Feature)

4,

and 6 are

2,

4,

rotary

15

general

or

switches

sections.

are

selected

hexadecimal

15). regis-

se-

6,

res

pec-

2.

Set

switch D to

follows:

Switch D Setting

8

9

A

B

C

D E

F

Unit

1.

Control

Make

setting

and

Word

sure

(MPX 0 to

features).

Stored

(UCW)

that

switch A is

the

desired

Register

(Instruction

~

}

G

(Instruction

U 1

(Data

vf

L

(Instruction

D

(General-Purpose

Register)

S

(CPU

Selection

MPX

6,

register

Selected

Function)

Operation

Address)

Status)

set

to

the

depending

storage

(Cnmeral

Address)

Length)

Data

proper

upon

as

Code)

IVIPX

model

Switch Unit-Control Words Selected (depends upon

Switch

Figure

2.

3.

switch-A

C

t

0 1

2

3

4

5 6

7 7,23 39,55 71,87

8

9

10,26

A

B

11,27

C

12,28

D

13,29 45,61

E

14,30

F

15,31 47,63 79,95 111,127

A-

MPX 0 MPX 1 MPX 2 MPX

6.

Set

switch C to

in

Figure

Set

switch D to

selected

setting)

32,48

0,16

1,17

33,49

2,18

34,50

3,19

35,51

4,20

36,52 5,21 37,53

6,22

38,54

8,24

40,56 72,88

9,25

41,57

42,58

43,59

44,60

46,62

Selection

6.

DCW

64,80 96,112

65,81

66,82

67,83

68,84

69,85

70,86

73,89

74,90

75,91

76,92 108,124

77,93 109,125 141,157

78,94

of

select

as

follows:

128,144

129,145

97,113

130,146

98,114

99,115 131,147 163,179 195,211 100,116

101,117

102,118

103,119 104,120

105,121

106,122

107,123 139,155 171,187 203,219

110,126

Dnit

132,148

133,149

134,150 166,182

135,151

136,152 168,184 200,216

137,153 169,185 201,217

138,154

140,156

142,158 174,190

143,159 175,191

3

MPX

Control

the

desired

the

desired

UCW

capacity

160,176

161,177

162,178 194,210

164,180 196,212

165,181 197,213

167,183 199,215

170,186

172,188 173,189

MPX

4

Words

DC\V's

byte

from

192,208

198,214

202,218

204,220

205,221

206,222

207,223

5

as

and

193,209

MPX

shown

the

The

format

This

section

of

DCW

bytes.

Channel

Status

Flags Byte

a 1 2

Figure

Channel

Bit

7.

Status

o

1

2

3

4

5

6

7

*Combinations

3

0 0

1 1

of

the

DCW's

presents a description

Op

and

Count

High

Low High

3

Dnit

Control

Word

Byte:

Function

Not

Dsed

(Channel

Channel

Interface

First Status Incorrect

Program

Control

Status

Check

Protection

of

Bits 3 and 4 Indicate:

4

o

Handling

1

Device expecting

o

Status

1

Status

is

Data

4

Format

Received

*

Check

data;

instructed

status

stacked

is

in

shown

of

Address

Low

5

Data

Check

*

expecting

at

Interrupt

in

Figure

the

contents

High

6

Check)

to

stop;

control

Buffer

Address

Low

7

in

2030.

data

unit

7.

(IB)

Switch

D

Setting

0 0 1 1

2

3 3

4 4

5 5

6 6 7 7

8 0

9

A 2 B 3 C 4 D

E

F

Byte

Selected

2

1

5

6 7 7

In

DC\V

(depends

setting

First lected

for

selects C

(Figure one in

of

two

by

example,

MPX 0 and

selects

6),

of

bytes 0 through

DCW

O.

switch D is 3

of

DCW 0 Second lected for selects C (Figure lects

by

example,

selects

~

in

DCW

of

MPX 0 and

6),

upon

switches A and

DCW's

switch

C:

switch

se-

If,

A

switch

DCW's 0 and

switch D selects

7

(Thus,

set is

two

switch

if

to

3,

byte selected.) DCW's

If,

C:

switch

A

se-

switch

DCW's 0 and

switch D se-

of

bytes 0 through

16.

16

C)

Op

and

Bit

o

1

2

3

4

5

6

7

Current

The

various displayed the

allow-write

Flags

Byte

Function

Chain

Data

Command

Suppress-

Length

Skip

Program-Controlled Active

Output

(write)

Decrement

Program-Status-Word

portions

at

any

time

of

that

the

indicator

Address

Chaining

Indication

Data

Address

(PSW)

current

the

CPD

is

off.

(CDA)

(CC)

Interrupt

Selection

PSW

clock

(S

can is

LI)

be

off

(PCI)

and

23

PSW

Field

System

Protection

AScn

Machine-Check Mask

PSW

Wait

Problem

Inte Code

Instruction Code

Condition

Program

Mask

Key

Mode B9

Field

State

rru

ption

Length

Code

Mask

Local

B8

B9

protection

played

B9

Local

B9

(available

storage,

8C

two

register).

BB is spond mask.

BB

Storage

(high-order

(bit

(can

(high-order

in a four-bit

Address

key

from

4)

5)

Storage

(bit

6)

(bit

7)

in

bits

also

high-order

to

the

(low-order

(Hexadecimal)

four

bits).

can

also

the

Q-register.

Address

old

PSW

16

through

be

decoded

bits

of

four

code

branch-on-condition

four

The

be

dis-

(Hexadecimal)

in

main

31).

from

the

G

bits)

This

to

corre-

bits)

the

cessing Data is dewibed. may instructions as That of may cution processing other difference

can of poses)

instruction and

SINGLE-CYCLE, OPERATIONS

Although primarily wish into, essed stopped this

exce

exchanged

not

lost

occur

contrasted

is,

an

I/O

operation

occur

of

the

instructions

affect

the

program

rather

When

the

A-register

single-cycle

for

to

examine

various

one

after

operation:

pt

that

when

Note,

at

different

being

with

I/O

before

in

time-of-occurrence

expected

than

CPU

to

be

Customer

registers.

machine-cycle

the

operation

between

the

interruption

instruction.

interruption

should

processed

indicators.

the

cycle

the

Rate

switch

however,

times

processed

normal

for a relatively

the

have

program

only

stops,

DffiPLAY, AND

contents

instruction

start

been

be

run

one

the

operations

Engineering

An at a time

is

completed.

is

much

slower.

CPU

and

I/O

devices

is

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keyboard

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(or

or

the

enough

the

operation,

keyboard

any

1050

is

written

also

the

to

the locked, is

initiated

being

busy

are

and

data

prints

to

2,

any

1050

can

be

inquiry

on,

start

IBM 1050 OPERATIONS

from

EOT)

trailing

to

return

printer

with

That

be

CCW

zero.

proceed

an

condition

read

until

then

is

(if

storage.

all

printable

the

light

Reader

character

is

character

edge

generate

the

is

locked

and

the

2030

is,

the

only

to

recognize

stopped

(Channel

If

data

automatic

to

any

from

EOB transferred from

a

printable

printers

is

turned

is

read)

is of the

proceed

line

feed

copying

are

preceding

if

the

by

was

light

1050

is

Reader

is

detected.

the

keyboard,

If

data

characters

are

off.

2:

and

the

is

character)

condition carrier printer

initiated

at

provided

key

any

return

copying

from

time

the

has

the

after

keyboard

not

been

read

(after

from

tape,

read

from

the

card

stop.

light an is

the

under

program

requests

channel.

Command

being turned

carrier

printer

placed

2,

on

the

No

to

storage.

was

being

up

deselected

The

is

placed

and

line

the

key-

the

still

pressed).

37

A

cancel

operation

alternate-code

holding

The

the

The

read

proceed

alternate-code

locked, a hold and

an

automatic initiated. to

storage.

to

the

cancel

The

data

character

Programming

characters

key

inquiry

light

is

condition

carrier

cancel

is

executed

and

the

operation

turned

is

character

transferred

is

generated.

by

zero

key

down.

is

off.

placed

return

and is

determines

pressing

while

then

The

keyboard

on

Reader

line

not

to

storage

the

still

terminated.

is

2,

feed

is

transferred

what

is

done

before

the

program,

and a single

during

the

carrier

Off - Line 1050

Home

Component

manner

when

the

line

feed

Functions

the

carrier

returns

occurs.

return.

Recognition

1050

is

operated

automatically

Printing

operates

off-line.

is

suppressed

in

its

normal

Read-Inquiry Recognition

With

the

active

tions

as

Initial

Feature)

Home

in

the

1051,

described

Selection

Printer 1 (either

selected

Execution

If

the

output

for

of

operator

to

monitor

monitoring.

Read-Inquiry

can:

1.

2.

Prefix

before

Put

and

outputs entering

the

PROG/DUP

manually

monitoring

to

program

If

the

operator

to

enter

his

inquiry continuously during

that

tests

portion

Command

Component

Initiated

the

in

1052

the

or

(with Home

Recognition

read-inquiry

following

by

Start

1053)

Command

desires a different

during

on

data,

and

the

off or

inquiry

from

switch

switch-select

outputs.

mode

presses

for

of

(He

must

before

from

the

Reader

entering

home

Reader 2 select-and-ready

the

inquiry

Component

feature

command

paragraphs.

I/O

Instruction

is

automatically

or

an

operation,

the

keyboard

in

the

DUP

the

desired

return

EOB.

reader 2,

the

adapter

operation.

func-

additional

he

mode

the

switch

)

Start

key

1050

I/O

Prefix

Printer Printer

Selection

1

2 Punch 2 on Printer Printer Punch

1 off

2 off

2 off *Ribbon Shift *Ribbon Shift down *Single-

Line

*Double-Line

*Requires

Select

Note: When Reader selected

Operations

If

the

Automatic

feature

the

2,

and

on.

Terminated

execution

in

1050

Punch 1 are

of a

intervention-required

1.

An

automatic attempted printers. from

the

intervention-required

and

before

carrier

but

may

The

keyboard

the

operation.

up

Feed

Ribbon

the

1051.

is

operating

by

command

status:

not

carrier

off-line,

1050

is

Prefix Prefix Prefix Prefix Prefix

Prefix

Prefix Prefix Prefix

Shift

always

1

2

4

5

6 8

A

B C D

and

Line

Feed

on-line,

Reader

automatically

Intervention-Required

is

return

be

executed

may

condition

returned

terminated

and

line

have

to

after

to

feed

to

monitoring

be

returned

the

cause

is

removed,

on-line

by

1,

an

is

of

End

Operation

At

the

end

of

each

read

inquiry

output

Carrier

When right

38

devices

Return

operating

margin

are

deselected.

on-line,

without a carrier

if

the

carrier

command,

return

all

reaches

signal

1050

the

from

2.

3.

If

paper reader The after

stops

paper

the condition returned

If

cards

or

reader

The

cards

tape

cause

is

to

were

stops

must

was

being

within

must of

the

removed

on-line

being

within

be

read,

the

paper

the

record

be

manually

being

repositioned

intervention-required

and

before

the

operation.

punched

manually

the

or

card

released

read,

being

tape

read.

1050

is

the

punch

processed.

or

ejected.

Halt

I/O

EBCDI Figure

code. 13;

for

For

the

PrTC/EBCD

EBCDI

code,

code

Figure

14.

refer

to

Keyboard

If a

halt

I/O entry, The turned status return

flags

Write

If a

command,

immediately.

status An ated.

Read

If a

command, channel-end established. until time

established.

An

tiated

the

keyboard

off.

are

and

are

turned

halt

I/O

and

automatic

Any

from

halt

I/O

the

normal

device-end

automatic

to

any

Entry

command

operation

is

locked

Channel-end

established,

the

line

feed

off.

command

the

current Channel-end

an

interrupt carrier

chaining

Reader

the

2

command

data

transfer

status

and

The

attachment

end

and

Any

chaining

carrier

monitoring

is

terminated

and

is

executed

write

condition

return

flags

is

executed

an

of

media

an

interrupt

return

printers.

executed

the

proceed

status

an

automatic

initiated.

command

status

and

are

turned

is

terminated

interrupt

and

is

flags

and

reached,

are

during a keyboard

immediately.

light

is

device-end

carrier

Any

chaining

during a write

is

terminated

and

device-end

are

established.

line

feed

is

initi-

off.

during a read

and

condition

1050

remain

condition

turned

line

feed

at

are

off.

is

are

busy

which

ini-

Input

The

following

26

10

26

_L

4

Printer

.1

Space

93

All

other

entered

Output

The

follOWing

26

10

26

-~ 1-,+

codes

Lower-case

Upper-case

Numeric

Special

Total

Lower-case

Upper-case

Numeric

Special

graphics

-,

+!

control

backspace)

/blank

1050

control

into

storage.

codes

graphics

are

alphabetic

(0

through

are

alphabetic

(0

through

translated

9)

#@/,-$&.

codes

(line

codes

translated

9)

#@/,-$&.=<;:%'>*)"(¢?

on input:

(a

through

(A

through

=(;:%' > *)"(¢?

feed,

are

deleted

on

(a

through

(A

through

new

output:

z)

Z)

and

z)

Z)

line,

not

tab)

Codes

The

following

between

the

automatic

1050

PrTC/EBCD

translation

and

is

performed

the

System/360

1

Space

16 1050

105

Total

/blank

control

codes

39

UPPER

CASE

PTTC/EBCD Character Space

A B C D

E F

G

H I

J

K B 2 L

M

N

0

P

Q

R S

A

B

A

B

A 2

B

A

B

A

B

A

B

A

B

A

B

A

B

A

B

B I B

B B

B 4 B B B

A

4

8

4

4 4 4

8 8

4 4

4

8 8

2

2 2

2

2 2

2

I

1

I

I I

I i

I I

1 n

I

1

Character Space

a b c d

e

f

9

h

i

k

m

0

p B

q

r s

LOWER

CASE

PTTC/EBCD

8

8 8

4 2 I

4

4 4 4

4

4 4

B

A

B

A

B

A

B

A

B

A

B

A

B

A

B

A

B

A

B

B B B 2 B 4 B

B B

B

A

I

2 2

I

2

I

2

I

2

I I

2

I

2

I

2

T

U

V

W A

X A

Y

Z

+

.....,

-

j

~

?

I

=

<

i

:

%

I

A A A

B

A

B

B 8

A A A

>

* 8

(

)

II

PF

(Punch

Off)

HT

(Harizontal

LC

(Lower

DEL

RES

(Restore)

NL

(New Line) B

BS

(Backspace)

IL

(Idle) B

BYP

(Bypass)

LF

(Line

EOB

PRE

(Prefix)

PN

(Punch

RS

(Reader

UC

(Upper

EOT

(Delete)

Feed)

(End

of Block)

(End

of

Tab)

Case)

On) Stop) Case)

Transmission)

A

B

A

B

A

B

A

B B

B

A A

2

4 4

2

4

2

4

8 8 1

8 2 I

2

8

8 8 8

8 8 8 8 8

8 8 8 8 8 8

2

2 2 I

4 4 4

2

4

2

2 2

4

4 I 4

2

4

2

4

4 I

4 2

4 4

2

4

2

4 4 4

2

4

2

4

I

I I

t u A

v

w A x

Y

z

& B

-

I

I I I

I

I I

I

$

@

/

,

I

2

3

4 4

5 4

6

7

8

9

0

PF

(Punch

Off)

HT

(Horizontal

LC

(Lower

DEL

RES

NL

(New Line)

BS

(Backspace)

IL

(Idle) BYP LF

(Line

EOB PRE

(Prefix)

PN

(Punch

RS

(Reader

UC

(Upper

EOT

Case) (Delete) (Restore)

(Bypass)

Feed)

(End

of

On)

Stop)

Case) (End

of

Tab)

Block)

Transmission)

B B

B

B A B A B A B A B

B B B

A A

A

A A A

A

A A A

A A

4 4 4 4

8 8

8

8 8 2

4 4

8

8 8

4

8

4

8

4

8

4

8

4

8

4 I

8

4 2

8

4

8

4

8

4

8

4

8

4

8

4

8

8 4

4

8

2

2 I

2

2 I

2 2

2

2 2

2

2 2 1

2 2

I I I

I

I I

I

I I

1 1

Figure

13.

Perforated

Tape

and

Transmission

40

Code/EBCn

EXTENDED

BINARY

-CODED-DECIMAL

INTERCHANGE

CODE (EBCDIC)

Figure

14

shows

bit

positions,

bit

patterns,

card-

punch

patterns,

graphic

characters,

and

control

characters

for

EBCDIC.

41

~

sP

,Ci-

&

Jt

/GJ:

PF

RES

BYP

PN

HT

NL

LF

RS

LC

BS

EOB

UC

DEL

IL

PRE

Eor

¢

!

Q§

$

,

<

...

%

( )

-

+

;

>

I

-,

?

Exceptions:

CD

12-0-9

-8-1

®

No Punches

0

12-11-9-8-1

0

12

®

11-0-9-8-1

0

11

8)

12-11-0-9-8-1

®

12-11-0

~

:

*

@

I

=

"

Bit

Positions

0,

1

Bit

Positions

2,

3

'"

CII

..c

u

c

;:)

a..

'0,

c

..

CII

..c

u

c

;:)

a..

'0,

C

"-

-0'

11')'

~'

'"

c

:~

cs

a..

;0

"-

-0'

.0-

~'

C

~

()

a..

;0

®

12-0

@

11-0

@

0-8-2

@

0

Figure

14A.

Extended

Binary

Coded

Decimal

Interchange

Code

42

~

..c

u

c

;:)

a..

'0,

C

@

0-1

@

11-0-9-1

@

12-11

Control

Characters

Punch

PF HT LC DEL

RES NL

Special

¢

Cent

Period, Less-than Sign

<

(

Left Parenthesis Plus Sign

+

Vertical

I

Ampersand

&

Exclamation Point Dollar

$

Examples Type

PF

%

R a

Off

Horizontal Tab

Lower

Case Delete Restore New

Line

GraE!hic

Sign

Decimal Point

Bar, Logical OR

Sign

Control

Character

Special

Graphic

Upper

Case

Lower

Case

Control

Character, function assigned

Characters

not

yet

Backspace

BS

Idle

IL

BYP

Bypass

LF

Line Feed End

of

Prefix

NOT

Sign,

Pattern

234567

Block

Hyphen

EOB

PRE

Asterisk

*

Ri

ght Parenthesi s ?

Semicolon

-,

Logical

- Minus

/ Slash

,

Comma

%

Percent

Underscore

Bit Bit Positions

01

00 00 0100 01101100

11

01

1001 10000001 00

11

0000

Zone

12-11-0

PN RS UC

EOT

SP

Greater-than

>

Question Colon

I

Number Sign

@

At Prime, Apostrophe

Equal Sign

Quotation

Hole

Punches

12

Punch Reader Stop Upper Case End Space

Sign

Pattern

I

-9

- 4

0-8-4

11

';'

9

-0

- 1

-9

- 8 - 1

I

On

of

Transmission

Sign

Mark

Digit

Punches

Figure

14B.

Key

to

Figure

14A.

43

GLOSSARY

OF

TERMS

Auxiliary

Storage

(AUX

or

AS)

1.

Any

storage

media

(tape,

disk,

external

core

storage,

etc)

not

contained

within

the

CPU.

2.

An

addendum

to

CPU

main

storage

containing

CPU

local

storage

and

multiplexor

storage.

Local

storage

contains

the

sixteen

general-

purpose

and

the

four

floating-point

registers,

and

certain

other

areas

that

cannot

be

accessed

directly

by

the

programmer.

Multiplexor

storage

contains

unit

control

words

(UCW's)

that

maintain

records

of

I/O

unit

operations.

Central

Processing

Unit

(CPU).

This

unit

contains

the

controls,

programs,

and

storage

facilities

of

the

system.

Hexadecimal.

A

base-sixteen

numeric

representation

using

four

bits

that

are

arbitrarily

assigned

values

of

8,

4,

2,

and

1.

All

bit

combinations

are

valid.

Binary

Value

Binary

Value

8421

Hex

Value

8421

Hex

Value

0000

0

1000

8

0001

1

1001

9

0010

2

1010

A

0011

3

1011

B

0100

4

1100

C

0101

5

1101

D

0110

6

1110

E

0111

7 1111

F

Hexadecimal

notation

is

used

both

for

addressing

and

arithmetic

functions.

Interruption.

The

interruption

system

permits

the

CPU

to

change

state

as a result

of

conditions

ex-

ternal

to

the

system

(in

input/output

units)

or

in

the

CPU

itself.

Local

Storage.

See

Auxiliary

Storage.

Manual

Light.

The

System/360

Model

30

manual

light

is

on

when

the

CPU

is

in

the

stopped

state.

Certain

manual

operations

(such

as

manual

display)

are

permitted

only

when

the

CPU

is

in

the

stopped

state.

44

Manual

State.

In

the

manual

(or

stopped)

state,

the

manual

light

is

on.

Instructions

are

not

executed,

and

interruptions

are

not

honored.

Mask. A tool

used

by

the

programmer

either

to

allow

or

inhibit

certain

interruptions.

Microprogram.

A

sequence

of

control

operations

within

the

CPU.

Multiplexor

Storage.

See

Auxiliary

Storage.

Operator's

Control

Panel

(OCP).

The

operator's

control

panel

section

of

the

system

console

consists

of

those

controls

normally

required

to

run a job.

These

are:

the

power-on,

power-off,

interrupt,

and

load

keys,

the

load-unit

address

rotary

switches

G,

H,

and

J,

and

the

five

lights

labeled

SYS

(system),

MAN

(manual),

WAIT,

TEST,

and

LOAD.

Problem

Program.

Any of

the

class

of

routines

that

perform

data

proceSSing

operations,

including

routines

that

solve

problems,

monitor

and

control

industrial

processes,

sort

and

merge

records,

perform

computations,

process

transactions

against

stored

records,

etc.

Problem

State.

In

this

state,

all

privileged

in-

structions

are

invalid

and

will

cause a program

interruption.

When

the

CPU

is

in

the

problem

state,

bit

15

of

the

PSW

is

on.

Problem/supervisor

status

is

not

indicated

on

the

console.

Program

Status

Word

(PSW).

The

program

status

word

contains

the

information

required

for

proper

program

operation.

Read-Only

Storage

(ROS).

This

storage

medium

in

the

System/360

Model

30

is

the

control

system,

and

hence

contains

the

microprograms

necessary

to

implement

the

various

functions

of

the

system.

Read/Write

Storage.

Core

storage

is

used

as

required

in

the

execution

of

problem

programs.

Some

areas

of

read/write

storage

are

reserved

(see

System/360

Principles

of

Operation,

Form

A22-6821,

and

Ssstem/360

Model

30

Functional

Characteristics,

Form

A24-3231).

ROS.

See

Read-Only

Storage

Running the

CPU

State.

executes

interruptions

In

the

instructions

(if

not

running

masked

or

(if

off).

operating

not

waiting)

state,

and

Acts

in

or

interrupting

response

to

requirements

the

flow of

for

operations.

altering

Status.

System supervisor, and

stopped/operating.

Stopped

Supervisor executed the

State.

in

following

Controls

Program. A control

the

input/output

Coordinates

Maintains

states

are

wait/running,

See

Manual

supervisor

functions:

system

the

resources.

flow of

defined

as:

problem/

masked/interruptable,

State.

routine,

state,

that

performs

.

operations.

operations

through

which

the

is

CPU.

Supervisor bit

15

Tag.

State.

is

off.

Symbols

operation.

Trap. A change automatically

UCW. See

Wait

State. instructions on.

The

interruptions

initiated

Auxiliary

In are

CPU

clock

are

All

instructions

that

give

information

in

microprogramming

by

some

Storage.

the

wait

state

processed.

continues

executed

unless

are

about

machine

(wait

light

Bit

14 of the PSW

to

run,

masked

valid.

an

that

is

condition.

on), no

however,

off.

PSW-

I/O

is

and

45

INDEX

Address

(1052) 29

Address

Compare

Switch

11

Address

Entry

Switches

9

Addressing

AUX

Storage

21 ADR IN 17 ADR

OUT

17

Allow

Write

15

Alter a Block

of

Read/Write

Storage

28

Alternate-Code

Key

36

Alter

Read/Write

Storage

28

ALU

Output

16

A-Register

16

Assignment

(I/O)

Switches

36

Attend/Unattend

Switch

36

Auto-Fill

Switch

36

AUX

STOR

Indicator

16

Basic

Test

27

B-Register

16

Bus-Out

(MPX)

17

Cancel

Operation

37

CC

17

CD

17

Check

Control

Switch

10

Check

Indicators

(C

PU) 16

Check

Reset

Key

12

Channel

Status

Byte

23

CHNL

CTRL

18

CHNL

DATA

18

CMND

OUT

17

Codes

39,

43

Command

17

COMP

MODE 15

Console

Controls

9

CPU

Check

Indicators

16

CPU

Connect

Switch

35

CPU

Status

Indicators

14

Data

Entry

Switches

9

Data

Register

17

Diagnostic

(Check

Control

Switch)

10

Disable

(Check

Control

Switch)

10

Display

from

Storage

20

Display

Key

13

Display

Operation

24

Display

Read/Write

Storage

27

Displays

14

Display-Storage

Selection

Dial

9

Early

ROAR

Stop

(Address-Compare

Switch)

11

EBCDIC

41

46

Emergency

Pull

Switch

8

EX

14

Flags

17

Floating-Point

Registers

22

General-Purpose

Registers

22

Glossary

of

Terms

44

Halt

I/O

(lO50)

39

Home

Loop

29

IL

18

Inhibit

CF

Stop

(ROS

Control

Switch)

12

INSN

STEP

(Rate

Switch)

10

Instruction

Step

10

Interrupt

Key

8

Interval

Timer

Switch

13

Intervention-Required

Light

36

INT

FACE

18

INTV

(1050) 15

I/O

Assignment

Switches

36

Key

17

Keys

(1052)

30

Lamp

Test

Key

13

Lights

(1052)

30

Line

Loop

29

Load

Indicator

8

Load

Key

8

Load

Program

19

Local

Storage

22

LP

18

LS 22

Main

Storage

Address

Register

(MSAR)

16

Main-Storage

Data

Register

(MSDR) 16

MAIN

STOR

Indicator

16

Manual

Indicator

8

Manual

Intervention

27

Match

15

Microprogram

Tests

27

MPX

CHNL

15

MPX

Storages

22

Multiplexor-Channel

Dis

plays

1 7

Multiplexor

Channel

Tags

17

OCP

6

Off-Line

29

Off -

Line

1050

Functions

38

On-Line

29

Operation Operations Operations

Required Operator's Op

and

OP

IN 17

PCI Power-Off Power-Off Power-On Power-On

Prefix Printer Proceed

Controls

(1050) 37 Terminated

Control

Flags

17

Key

Selection

Keyboard

Light

38

Byte

19

6

19

6

38

(1052)

35 ProceSSing a Program Process Process Process Process PROG

(Address-Compare (Check (Rate (ROS

Control

Switch)

Control

18 Program/Duplicate Program Program PROT PSW PTTC/EBCD

Push

Rate Read Read-Inquiry Read-Only Registers REG Request Request Restart ROAR ROAR ROAR

Switch) ROAR ROAR SYNC ROS ROS

Rotary

Load

Section

18

(Current)

Buttons

Switch

Inquiry

Storage

16

(1050) 15

Key

Light

(Check

Reset

Key

Restart

11

Stop

(Address-Compare

Control

Scan

Switch

(ROS

Switches

19

ProceSSing

23 39 12

10

37

Command

Displays

35

36

Control

12

(Address

Storage

Control

(F,

10

by

Panel

23

Section

Switch)

10

Switch)

Switch

Switch)

Compare

Bypass

12

Switch)

G,

H,

Intervention-

(OCP)

6

29

25

Switch)

10

12

35

25

38

18

10

Switch)

(Address-Compare

Switch)

12

J)

8

11

SAR SAR SAR SEL

Delayed Restart

Stop

CHNL

Stop

(Address-Compare

15 Selector-Channel Selector-Channel Selector-Channel SEL

OUT 17

SERV

IN 17 SERV Set Set

OUT IC IC

17

Key

12

Procedure Single-Cycle Single-Cycle Single-Cycle

Operation

(Rate Single-Instruction SKIP SLI Start STAT Status Stop Stop Store Store

Store SUPP Switch Switch Switches System System System

Tags Test Tests

Unit Use

Wait W-Register

X-Register

17

Key

12

IN 17

Indicators

(Check-Control

Key

13

into

Storage

Key

13

Operation

OUT

17 A 21 E 9

(1052)

Indicator

Operations

Reset

Key

(MPX)

17

Indicator

(Microprogram)

Control

Meters

Word

18

Indicator

18

(Address-Compare

Checks

Displays

Tags

18

25

10

24

Switch)

Processing

(CPU)

14

Switch)

20

24

30

8

19

12

8

27

(UCW) 22

8

Switch)

18

17

10

Switch)

24

,Switch) 11

11

47

A24-3373-2

International Data

Processing

112

East

Post

Business

Division

Road,

White

Machines

Plains,

Corporation

N.Y.10S01

[USA Only]

IBM World 821

[

International]

United

Trade

Nations

Corporation

Plaza,

New

York,

New

York

10017

l>-

tv

~

I W W

'J

W

I

tv

IBM System 360, Model 30 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual