IBM 360 Manual de usuario

Systems Reference Library

IBM

System/360

Model

Operating Guide

File

Number

8360-01

Form

A24-3373-2

This

reference

publication

describes

operator

procedures

for

the

IBM 2030

Processing

Unit

and

the

IBM 1052

Printer

Keyboard

(attached

the

IBM

8ystem/360

Model

30).

For

additional

information

for

operation

the

various

input/output

devices,

refer

the

publications

listed

the

IBM

8ystem/360

Bibliography,

Form

A22-6822.

Third

Edition

This

is a

reprint

A24-3373-1

incorporating

changes

released

the

following

Technical

Newsletter.

Form

Number

Pages

Affected

N24-0390

December

28,

1966

Significant

changes

additions

the

specifications

contained

this

publication

will

reported

subsequent

revisions

Technical

Newsletters

Copies

this

and

other

IBM

publications

can

obtained

through

IBM

Branch

Offices.

This

manual

has

been

prepared

the

IBM

Systems

Development

Division,

Product

Publications,

Dept.

171,

P. O. Box

Endicott,

New

York

13760

Address

comments

regarding

this

publication

this

address.

International

Business

Machines

Corporation

1965

CONTENTS

IBM

SYSTEM/360

MODEL

OPERATING

GUIDE

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

IBM

2030

System

Control

Panel

. . . . . . . . .

Operator's

Control

Panel

(OC

P).

. . . . .

Console

Controls.

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

Operation

Controls

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

Push

Buttons

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

Displays

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

Use

Meters

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

SYSTEM

OPERATIONS

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

System

Power-On

and

Power-Off

.......

Program

Load

Routine

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

Dis

play

Information

From

Storage

. . . . . .

Store

Information

into

Storage

. . . . . . . . .

Single-Instruction

Processing

.........

Single-Cycle,

Display,

and

Store

Operations.

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

Processing

Program

Section.

. . . . . .

Starting

Specific

Instruction

(Set

IC)

Procedure

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

Manual

Intervention

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

Microprogram

Test

Routines

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

Basic

Test

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

Display

Read/Write

Storage

...........

Alter

Read/Write

Storage

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

Alter

Block

Read/Write

Storage

.....

IBM 1052

PRINTER-KEYBOARD

..........

IBM 1050

OPERATIONS

....

EXTENDED

BINARY

-CODED-DECIMAL

INTERCHANGE

CODE

(EBCDIC)

.........

GLOSSARY

TERMS

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

INDEX

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

iii

Figure

IBM

System/360

Model

with

IBM

1052

Printer

Keyboard

IBM

SYSTEM/360

MODEL

OPERATING

GUIDE

The

IBM

System/360

Model

(Figure

solid-

state,

high-speed

data

processi~g

system

that

compatible

with

the

other

models

System/360

described

IBM

System/360,

Principles

Opera-

tion,

Form

A22-6821.

--The

operator

controls

needed

for

normal

program

processing

(turning

power

and

off

and

starting

program)

are

contained

the

2030

system

control

panel

(console).

The

IBM 1052

Printer-Key-

board

can

added

the

system

that

communica-

tion

between

the

operator

and

the

system

can

documented.

IBM

2030

SYSTEM

CONTROL

PANEL

The

IBM

2030

Central

Processing

Unit

provided

with

number

indicators

and

manual

controls

that

permit

operation

the

system

any

several

modes,

and

observation

the

results

any

opera-

tion.

These

indicators

and

controls

are

assembled

panel

(Figure

that

serves

both

operator's

system

control

console

and

IBM

Customer

Engi-

neer's

panel.

The

lower

right-hand

portion

the

console

designated

the

Operator's

Control

Panel

(OC

P).

This

section

contains

four

push

but-

tons,

three

16-position

rotary

switches,

and

six

indicators.

Except

for

the

nomenclature

printed

the

panel,

the

OCP

identical

all

CPU's

(Central

Processing

Units)

System/360.

The

OCP

contains

all

controls

and

indicators

necessary

for

normal

problem-program

processing.

OPERATOR'S

CONTROL

PANEL

(OCP)

This

section

the

2030

console

(lower

right

corner)

has

the

following

controls

and

indicators:

Power-On

Key

The

power-on

sequence

for

the

CPU

and

all

on-line

I/O

units

starts

when

this

key

pressed.

system

reset

function

occurs.

All

data-flow

registers

(but

not

the

general-[Xlrpose

floating-point

registers)

are

reset.

are

any

priorities

that

happen

turn

on.

The

CPU

clock

reset

prevent

access

storage

that

information

storage

not

dis-

turbed.

Hence,

system

power

can

turned

off

and

restored

without

destroying

information

main

storage.

The

I/O

units

are

sequenced

one

one.

power

cannot

brought

for

unit,

further

power-on

sequencing

interrupted

(console

Power

light

remains

off)

until

corrective

action

taken

for

that

unit.

All

on-line

I/O

units

are

also

reset.

The

po\ver-on

sequence

bypasses

off-line

I/O

devices.

The

time

required

for

power-on

sequence

depends

the

number

on-line

I/O

units.

Note:

The

follo\\ing

procedure

must

used

when

applying

removing

electrical

power

input/

output

devices:

Press

the

2030

Stop

key

and

wait

for

the

l\lanual

light

come

on.

Set

the

Rate

switch

the

Single-Cycle

position.

Press

the

2030

Start

key.

Turn

power

off

the

I/o

unit.

Set

the

Rate

switch

the

Process

position.

Press

the

console

Start

key

resume

opera-

tion.

This

procedure

ensures

that

the

system

cycle

which

read/write

storage

not

being

accessed.

Thus,

any

electrical

surge

the

chan-

nel

that

might

have

been

caused

applying

removing

power

the

unit

does

not

affect

the

contents

storage.

power

removed

from

the

last

I/O

unit

(because

maintenance

required)

channel.

the

line

terminators

must

relocated

order

continue

CPU

operations.

The

last

I/O

unit

any

channel

must

long

the

system

on.

Power-Off

Key

This

key

removes

power

the

CPU

and

all

on-line

I/O

units.

The

contents

main

storage

are

not

altered

during

the

power-off

operation.

except

that

storage-read

cycle

has

been

taken

(the Allo\\,-

\!.,Trite

indicator

on),

manual-\\Tite

cycle

forced

ensure

that

the

contents

the

location

just

read

are

not

lost.

READ

ONLY

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DATA

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UTPUT

STATUS

CHECKS

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MATCH

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STOR STOR

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DATA

8-REGISTER I A-REGISTER

1050

1050 B A

ALU

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RESET

D CHECK

RESET

TEST

B B IOIS.LAyl

ROS

CONTROL

INHI81T

PROCESS

ROS

ifop

\ I/

SCAN

ADDRESS

COMPARE

ROAR

SYNC

---\...ROC

ESr~~~'pELAYEO

ROARSTOP~

~SARSTOP

EARLY

--:JI,\,,--SAR

RESTART

ROAR5TOP

~~~~~T~~~ET

R:fr~~T

R~t~RR:;:::~

POWER

CHECK CONTROL

DISABLE

PROCESS

STOP

oIAGNO:=S

I!=START

POWER

INSTRUCTION

ADD

ESS

-R05

ADDRESS

00000

I/O

interruption

conditions

are

reset

when

the

Power-Off

Key

operated.

Therefore,

any

pending

I/O

interruptions

are

lost

during

power-off

opera-

tion.

The

Power-Off

key

takes

precedence

over

the

Power-On

key.

The

recommended

power-off

procedure

is:

Press

the

console

Stop

key

and

wait

for

the

Manual

light

come

on.

(The

Stop

keys

the

attached

I/O

units

not

cause

the

system

enter

the

manual

state.

)

Press

the

Power-Off

key.

Emergency

Pull

Switch

The

Emergency

Pull

Switch

removes

all

primary

electrical

power

(including

power

all

on-line

I/O

units)

with

regard

sequencing.

The

contents

storage

may

altered

this

switch

operated.

the

name

implies,

the

Emergency

Pull

Switch

should

used

only

necessary.

This

switch

must

manually

reset

the

Customer

Engineer.

The

system

protected

thermal

overload

switches.

the

temperature

the

operating

environment

too

high,

these

switches

drop

system

power.

Contact

the

Customer

Engineer

whenever

system

power

cannot

maintained.

System

(SYS)

Indicator

This

indicator

normally

whenever

either

the

use

meters

running.

(See

the

Use

Meters

section.

)

Manual

(MAN)

Indicator

This

light

indicates

that

the

CPU

clock

stopped

and

that

channel

operation

progress

(as

long

the

System

light

off).

Several

the

manual

console

controls

are

effective

only

when

this

lamp

on.

\Vait

Indicator

When

this

light

on,

the

CPU

clock

running

but

instruction

processing

occurs.

interruption

occurs,

processing

initiated

required

the

program.

Test

Indicator

The

Test

light

whenever

the

Address

Compare,

Check

Control,

ROS

Control,

Rate

switch

not

set

Process

(normal

processing

position).

Load

Indicator

This

indicator

turns

when

the

Load

key

pressed

and

released.

remains

until

the

load

micro-

program

successfully

completed

(the

initial-load

PSW

set

into

circuitry).

See

the

Load

Key

section.

Load

Key

This

key

used

initialize

the

system.

The

f01-

10\ving

functions

occur:

automatic

System

Reset

performed.

The

CPU

clock

started.

The

basic

test

microprogram

performed.

This

test

looped

128

times.

The

clear

UCW

microprogram

run

reset

all

the

flag

bytes

the

UCW

area

auxiliary

storage.

The

load

microprogram

begun.

This

routine

analyzes

switches

and

determine

the

address

the

program-loading

I/O

device

(load-unit

address).

\Vhen

this

routine

com-

pleted,

the

Initial

Program

Load

(IPL)

PSW

has

been

successfully

set

up,

and

the

Load

light

turned

off.

Note

that

the

system

mask

reset

when

the

load

key

pressed.

The

system

mask

the

IPL

PSW

then

effective

soon

the

IPL

PSW

set

up.

Interrupt

Key

When

this

key

pressed,

the

interruption

code

the

external

old

PSW

altered

indicate

that

external

interruption

pending.

The

system

recog-

nizes

this

interruption

only

programmed

so.

Switches

G, H,

and

These

rotary

switches

are

normally

used

the

operator

for

the

following

operations:

Manual

alteration

instruction

address

a ROS

address

(F,

and

J).

Manual

entry

the

load-unit

address

(G,

and

J).

Manual

entry

of a

byte

information

into

main

storage

into

data-flow

and

J).

The

functions

these

four

switches

are

described

detail

other

sections

this

manual.

Switch

also

used

for

1400

compatibility

opera-

tions

(see

IBM

System/360

Model

1400

Compatibility

Feature,

Form

A24-3255).

Switches

and

have

particular

significance

for

1620

compatibility

opera-

tions

(see

IBM

System/360

Model

30,

1620

Compati-

bility

Feature,

Form

A24-3365).

CONSOLE CONTROLS

The

manual

controls

the

2030

console

permit

the

operator

initiate

system

operation

any

seyeral

modes,

and

perform

display

and

store

operations.

Note:

Storage

Protection

not

effective

during

main-storage

alteration

display

operations

initiated

from

the

console.

Care

must

exercised

ensure

that

useful

data

not

unintentionally

altered.

Data

and

Address

Entry

Swit

ches

Eight

rotary

switches

are

provided

for

manually

entering

data

addresses

into

the

system.

Each

these

sixteen-position

switches

provides

one

hexadecimal

digit

(four

bits

plus

parity).

Switches

and

are

used

enter

address

for

manual

operations

involving

main

auxiliary

stor-

age,

set

compare

address.

These

four

switches

are

connected

the

main-storage

address

and

the

compare

(match)

circuits.

Switches

G, H,

and

are

used

set

instruction

address,

a ROS

address,

load-unit

address,

enter

manual

data

into

the

system.

These

four

switches

are

connected

the

data-flow

system

through

the

A-

and

B-registers.

These

switches

are

normally

used

follows:

Switch

A,B,C,D

F,G,H,J

G,H,J

H,J

Function

stop

restart

address

matched

against

the

contents

the

Main

Storage

Data

(MSDR)

the

ROS

address

regis-

ter

(WX),

main-storage

address

for

manual

store

display

operations.

instruction-Start

address

ROS-Start

address

for

manual

operation.

The

load-unit

address

(I/O

device

and

channel

address

from

which

the

program

loaded),

data

byte

loaded

into

main

auxiliary

storage,

into

data-flow

The

specific

functions

provided

these

eight

switches

are

detailed

various

sections

this

publication.

Switches

and

also

have

functions

unique

the

1400

and

1620

compatibility

features.

Display-Storage

Selection

Dial

This

control

can

used

display

information

from

(or

store

into

certain)

system

registers

that

not

have

full-time

indicators

the

console.

addition,

proviSion

made

display

from

store

into

any

main-storage

auxiliary-storage

location.

The

dual-concentric

rotary

switch

labeled

used

access

the

registers

and

system

control

points

shown

the

dial

(Figure

3).

Use

the

Storage-Display

Selector

switch

described

the

Display

and

Store

Operations

section.

\ I

0 "'TI

-i

Figure

Display-Storage

Selection

Switch

OPERATION

CONTROLS

Four

rotary

control

switches

are

provided

allow

any

several

modes

system

operation.

Althougb

these

controls

are

normally

used

only

the

IBM

Customer

Engineer,

certain

their

functions

are

useful

the

programmer

and

operator.

The

Test

light

these

four

switches

are

not

all

set

the

Process

position.

Rate

Switch

The

three

modes

operation

provided

this

control

are:

Instruction

Step

(INSN

STE

Position

When

the

Rate

switch

this

position,

one

com-

plete

instruction

(including

all

pending

unmasked

interruptions)

executed

each

time

the

Start

key

pressed.

After

the

instruction

has

been

executed,

the

A-

and

B-registers

contain

the

address

the

instruction.

The

stop

that

then

occurs

identical

the

stop

that

occurs

when

the

Stop

key

pressed.

input/output

instruction

executed,

the

I/O

instruction

and

all

associated

chaining

com-

pleted

before

the

final

stop

occurs.

the

start

key

pressed

again

during

the

chaining

operation,

the

instruction

processed.

Process

Position

This

position

the

Rate

switch

used

for

normal

program

processing.

Single-Cycle

Position

When

the

Rate

switch

this

position,

the

system

advances

only

one

ROS

cycle

each

time

the

Start

key

pressed.

Data

overruns

may

occur

this

mode

used

for

input/output

operations.

Check

Control

Switch

The

setting

this

switch

determines

the

system

reaction

when

error

detected

the

CPU

I/O

channels.

Several

courses

action

are

allowed

follows:

Diagnostic

Position

this

mode,

system

control

case

error

under

control

of a

special

microprogram.

Disable

Position

When

the

system

operated

this

mode,

parity

errors

are

logged

(in

associated

check

circuitry),

but

otherwise

the

failure

ignored.

Note,

however,

that

certain

system

errors

cannot

ignored;

that

is,

automatic

correction

read-only

storage

addressing

not

provided;

and

the

wrong

word

will

accessed.

Results

obtained

while

processing

problem

program

this

mode

may

wrong.

Process

Position

This

position

the

Check

Control

switch

used

for

problem-program

processing.

When a

parity

check

occurs,

the

malfunction

trap

microprogram

automatically

initiated.

This

routine

stores

the

contents

the

machine

check

and

the

pro-

gram

status

word

fixed

main-storage

locations

and

originates

machine

check

interruption

(refer

the

IBM

System/360

Principles

Operation,

Form

A22-6821).

Stop

Position

Detection

parity

error

this

mode

causes

unconditional

CPU

clock

stop,

regardless

machine-

check

masks.

I/O

data

overruns

may

occur

the

system

operated

this

mode.

Restart

Position

When

error

occurs

this

mode,

the

resultant

system

response

dependent

upon

the

setting

the

Address

Compare

switch

follows:

With

the

Address

Compare

switch

set

SAR

Restart,

System

Reset

initiated,

the

basic

micro-diagnostic

and

clear-UCW

routines

are

executed,

the

instruction

counter

set

the

address

specified

switches

and

instruction

cycle

started.

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