dec :: pdp1 :: maindec :: MAINDEC-4 MulDiv

MAINDEC 4

MULTIPLY AND DIVIDE TEST

DIGITAL EQUIPMENT CORPORATION . MAYNARD, MASSACHUSETTS

COPY NO.

This manual contains proprietary information. It is provided to the cus-
tomers of Digital Equipment Corporation to help them properly use and
maintain DEC equipment. Revealing the contents to any person or
organization for any other purpose is prohibited.

Copyright 1963 by Digital Equipment Corporation

AMINDEC 4

MULTIPLY AND DIVIDE TEST

Abstract: Maindec 4 is a maintenance program designed to test the automatic multiply -
divide and the instructions MUS and DIS (multiply step and divide step).

The method of testing is to obtain numbers from a random number generator and multiply or
divide them.

The results are compared with those of a routine which simulates the hardware used. The pro-
gram runs continuously using the typewriter as the indicator for all errors.

TABLE 1 TAPES REQUIRED

Maindec 4 (Multiply and Divide Test)

TABLE 2 SWITCHES

Switch

Setting

Function

SENSE Switch 1

1

Inhibits the testing of divide or DIS,

No effect.

SENSE Switch 2

1

Inhibits the testing of multiply or MUS.

No effect .

SENSE Switch 3

1

Inhibits all error printouts.

No effect .

SENSE Switch 4

1

The random number generator does not
advance .

No effect.

TEST ADDRESS

0000

Starting address for automatic multiply
and divide .

TEST ADDRESS

0001

Starting address for instructions MUS
and DIS.

TABLE 3 LOAD SEQUENCE

1 . Place Multiply - Divide Test in reader.

2. Depress READ IN.

3. The program will start automatically at address 0000. If MUS and DIS
are to be tested, place TEST ADDRESS switches at 0001 and depress START.

4. Check to see that the MUS, MUL, DIS, and DIV switches are
properly set .

TABLE 4 ERROR TYPEOUT FOR A DIS FAILURE

The firsf line typed informs the operator that the failure occurred on a DIS instruction. It
also gives the contents of the AC, I/O, and memory prior to the execution of the DIS
instruction.

The next line typed is what the AC, I/O, and MB should read at the completion of the
DIS instruction.

The third line, typed in red, is the answer obtained from the DIS instruction.

TABLE 5 ERROR TYPEOUT FOR A MUS FAILURE

The first line typed informs the operator that the failure occurred on a MUS instruction. It
also gives the contents of the AC, I/O, and memory prior to the execution of the MUS
instruction.

The next line typed is what the AC, I/O and MB should read at the completion of the MUS
instruction.

The third line, typed in red, is the answer obtained from the MUS instruction,

TABLE 6 ERROR TYPEOUT FOR A MULTIPLY FAILURE

The first line typed informs the operator that the failure occurred when multiply was used. It
also gives the contents of the AC, I/O, and memory prior to the execution of the multiply.

This is followed by the simulator printout, which consists of the SRC, AC, I/O and MB, The
first line printed occurs at the completion of TP-10 CYl . Subsequent lines give the contents
of the AC, I/O and MB at the completion of MDP-5,

The lost line typed is the contents of the registers at the completion of the multiply.

For a flow chart of automatic multiply, refer to Figure 7-5, page A 84 of the PDP-1
Maintenance Manual .

TABLE 7 ERROR TYPEOUT FOR A DIVIDE FAILURE

There are three possible causes for a divide failure. The first is where the division is good and
the answer is correct but the program counter fails to increment.

In this case the error typeout consists of the contents of the AC, I/O and MB prior to the
divide and the result of the divide .

The result is typed in red. The divide simulator is not typed.

The second case is that of bad divide , The term "bad divide" implies that the quotient would
be larger than the AC. The division is not performed.

If the AC or I/O is altered by the divide, the typeout consists of the following:

1. The instruction performed (DIV).

2. The contents of the AC, I/O and MB prior to the execution of
divide ,

3. The first two steps and last step from the divide simulator.

4. The contents of the AC, 1/0 and MB at the completion of the
divide instruction.

5. Those bits which differ from the original AC and I/O and therefore
are In error.

The third case is where the answer from the hardware from a good division does not equal the
answer from the simulator.

The typeout is as follows:

1 . The instruction performed (DIV).

2. The contents of the AC, I/O and MB prior to the execution of
divide.

The lines which follow this typeout tell the shift register to count the contents of the AC,
I/O and MB.

Typeouts occur at the following times:

1. TP-lOCYl.

2. MDP-5 prior to the increment of SCR.

3. MDP-14

TABLE 7 ERROR TYPEOUT FOR A DIVIDE FAILURE (continued)

Refer to Figure l^f page ASS of the PDP-1 Maintenance Manual for a flow chart of the
divide operation .

SUGGESTED APPLICATION

Because of time considerations, it is impossible to multiply and divide ail possible combina-
tions of numbers. Therefore, the numbers used are obtained from a random number generator.

If the multiply - divide logic makes errors only on a particular combination of numbers, the
random number generator may take numerous steps to produce those numbers .

It is therefore desirable to allow the program to run as long as is practical . When a periodi-
cal check of the equipment is made, use of the marginal check facility is recommended.

If a machine malfunctioi occurs and the cause does not become obvious from the typeout,
the following procedure may be useful:

1 . For divide: With the TEST WORD switches, place in memory a

program which divides the same numbers that failed.

2. Unsolder the wire on 2L2-H (MDP-5), and runa clip lead from
2L2-H to 1 Jl-E (the output of the stop pulse amplifier). The stop pulse
may now be used to single step through the divide timing chain. The
results of each timing chain may now be checked against the divide
simulator results.

3. For multiply: With the TEST WORD switches, place a program in
memory that multiplies the same numbers that failed.

4. Unsolder the wire on 2L9-W (MDP-6), and run a clip lead from
2L9-W to 1J1-E (the output of the stop pulse amplifier). The stop
pulse may now be used to single step the multiply. The results of

each timing chain may be checked against the multiply simulator results.

PROGRAM DESCRIPTION

Maindec 4 is a maintenance program designed to detect computer malfunctions in the auto-
matic multiply - divide and the MUS and DiS instructions .

If the program starts at address 0000, it uses the MUL and DIV simulators. If it starts at
address 0001, it uses the MUS and DIS simulators.

The program looks at SENSE switches 4, 1, and 2. A SENSE switch on zero causes the execu-
tion of the appropriate routine .

The method of testing is to compare the results of the hardware with the results from a
simulator. If the results differ, a second pass is made with the simulator typing the results
of each timing chain .

The program runs continuously with no computer halts.

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST

Location

Contents

Mnemonic Code

Remarks

0000

600532

jmp ess

0001

600517

Jmp dss

0002

opt.

0003

26OO23

dap opx

0004

710 006

set^ip aaa,6

0005

241046

0006

200002

lac opt

0007

661007

ral 7

0010

240002

dac opt

oom

21000

and (7

0012

650100

sza i

0013

700020

law char rO

0014

663777

swap

■

0015

663777

0016

730003

tyo

0017

461046

count aaa^opt 4

0020

600006

0021

221001

llo (36

0022

730003

tyo

0023

600023 opx,

jmp a

0024

260065 etl.

dap et3

0025

201047

lac src

0026

671077

rar 77

0027

640005

ssf 5

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0030

600053

jmp eta

0031

76400.0

prl2

0032

663007

0033

663777

0034

663777

0035

650100

0036

700020

0037

663777

0040

663777

0041

730003

0042

764000

pri2

0043

663007 .

0044

663777

0045

663777

0046

650100

0047

700020

0050

663777

0051

663777

0052

730003

0053

221001 eta.

lio (36

0054

730003

tyo

■w

0055

201050

lac ac

0056

170002

Jda opt

0057

201051

lac io

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0060

170002

J da opt

0061

201052

lac mem

0062

170002

jda opt

0063

221002

return

0064

730003

0065

600065 et3.

jmp .

0066

260103 ran.

dap rn

/random number

0067

221053

lio ral

0070

201054

lac ra2

0071

673771

rcr YYl

0072

61053

xor ral

0073

221054

lio ra2

0074

241054

dac ra2

0075

321053

dio ral

0076

663007

rcl 7

0077

401054

add ra2

0100

61053

xor ral

0101

241052

dac mem

0102

241055

dac mel

0103

600103 m.

jmp •

0104

a.

0105

260200

dap ret

0106

200104

lac a

0107

341056

dzm smb

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0110

341057

dzm srm

0111

341047

dzm sro

0112

640200

spa

/if minus

0113

761000

cma

/complement

0114

663777

swap

0115

663777

0116

200104

lac a

0117

640200

spa

0120

441057

idx srm

0121

441047

idx sre

0122

760005

elf 5

0123

321051

dio io

/p sue do in/out

012'-!-

201052

lac mem

0125

640200

spa

0126

441056

Idx smb

0127

201052

lac mem

0130

640200

spa

0131

761000

cma

0132

241052

dac mem

0133

341050

dzm ac

/psuedo ac

0134

640002

szf 2

>

0135

620024

Jsp etl

0136

221051 b.

lio io

0137

672001

rir 1

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location,

Contents

Mnemonic Code

Remarks

0140

652000

spl i

/test io 17

0141

600145

jmp • 4

0142

201050

lac ac

0143

401052

add mem

0144

241050

dac ac

/mb pad and cany

0145

441047

idx src

/increment scr

0146

201050

lac ac

014?

221051

llo io

0150

677001

scr 1

/multiply shift

0151

21003

and (377777

0152

241050

dac ac

0153

321051

dio io

0154

640002

szr 2

0155

620024

Jsp etl

0156

201047

lac spc

0157

521004

sas (22

0160

600136

jmp b

/scr ^2

0161

441047

idx src

0162

76OOI5

stf 5

0163

■

201051

lac io

0164

41050

ior ac

0165

650100

sza i

0166

600173

Jmp ret- 5

0167

201057

lac srm

10

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

r— -

Contents

Mnemonic Code

Remarks

0170

61056

xor smE

0171

640100

sza

/test for sign

0172

600201

Jmp c

0173

640002

szf 2

0174

620024

Jsp etl

0175

201050

lac ac

0176

221051

lio io

OlYT

760005

elf 5

0200

600200 ret.

jiup .

0201

201050 c.

lac ac

0202

761000

cma

0203

241050

dac ac

0204

201051

lac io

0205

761000

cma

0206

241051

dac io

0207

600173

Jmp r3t-5

0210

d.

0211

321051

dio io

0212

260405

dap dre

/divide

0213

760005

elf 5

0214

76OOO4

elf 4

-

0215

341056

dzm smE

0216

341057

dzm snn

0217

341047

dzm src

11

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0220

201052

lac mem

0221

640200

spa

/if mb minus set smb

0222

441056

icbc smb

0223

201052

lac mem

0224

640400

sma

0225

761000

cma-

/comp mb if minus

0226

241052

dac mem

0227

200210

lac d

0230

6^:-0200

spa

/if ac minus set srm

0231

441057

idjc srm

0232

200210

lac d

0233

241050

dac ac

0234

200210

lac Q

0235

640400

sma

/if ac minus

u2jo

600244

jnip . 6

/comp ac io

0237

761000

cma

0240

241050

dac ac

0241

201051

lac lo

0242

761000

cma

0243

241051

dac io

02^lA

640002

szf 2

0245

620024

jsp etl

024o

SO 0266

O'mp e

0247

4410 ^'!7

16.x src

12 '

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0250

201052

lac mem

0251

221050

llo ac

0252

652000

spi i

0253

761000

cma

0254

241052

dac mem

/+ ac comp mb

0255

201050

lac ac

0256

221051

lio io

0257

61005

xor (400000

0260

663001

rcl 1

'

0261

241050

dac ac

0262

321051

dio io

/divide shift

0263

672001

rir 1

0264

652000

spi i

/if io 17, zero

0265

441050

idx ac

/increment ac

. 0266

201050 e.

lac ac

/ones comp add

0267

401052

add mem

/=pad, carry or clear

0270

241050

dac ac

0271

201052

lac mem

0272

640200

spa

0273

761000

cma

/comp mb, if minus

0274

241052

dac mem

Tl

0275

640002

szf 2

0276

620024

jsp etl

0277

201047

lac src

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0300

501004-

sad (22

.

0301

6OO3IO

Jmp s

0302

640100

sza

0303

600247

jmp f

/f = indp-l routine

0304

201050

lac ac

0305

640200

spa

O3O6

600247

jmp f

0307

6OO3IO

Jmp g

0310

441047 S,

Idx src

0311

201050

lac ae

0312

401052

add meiri

0313

241050

dac ac

0314

700002

law 2

0315

210 47

0316

650100

sza 1

0317

600406

Jmp eee

0320

700020

law 20

0321

21047

and src

0322

650100

sza 1

0323

600330

Jmp . 5

0324

201050

lac ac

0325

675001

sar 1

/shift mdp-9

0326

21003

and (377777

/make ac positave

0327

241050

dac ac

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0330

201050 h.

lac ac

0331

650100

sza i

0332

6OO34I

Jnip J

0333

201057

lac srm

0334

650100

sza i

0335

6OO34I

Jnip J

0336

201050

lac ac

0337

761000

cnia

0340

241050

dac ac

0341

201051 h

lac io

0342

650100

sza i

0343

600357

Jmp k

0344

700020

lai^ 20

0345

21047

and src

0346

650100

sza i

-

0347

6OO357

jmp Ic

0350

201057

lac srm

/spq level

0351

61056

xor srab

0352

650100

sza i

0353

6OO357

jmp k

0354

201051

lac io

'

0355

761000

cma

/if(io not •fO)*scr

1

0356

241051

dac io

/spq , comp io

0357

700020 \z,

lavj 20

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (cc^tinued)

Location

Contents

Mnemonic Code

Remarks

0360

21047

and src

0361

640100

sza

0362

600371

jmp 1

0363

201057

lac snii

0364

650100

sza i

0365

6OO37I

jmp 1

0366

201051 ,

lac io

/if scr 0=0 'srm =1

0367

761000

cma

/comp io

0370

241051

dac io

1

0371

221051 1,

lio io

0372

440405

idK dre

0373

321052

dio mem

0374

201050

lac ac

0375

663777

swap

0376

6637YY

0377

241050

dac ac

0400

321051

dio io

0401

760015

stf 5

0402

640002

2Zf 2

0403

620024

jsp etl

0404

760005

elf 5

0405

600405 dre^

jmp ,

0406

221055 eee.

move me 1, mem

0407

321052

16

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

A/\nemonic Code

Remarks

0410

221054

0411

321051

0412

201053

0413

241050

0414

600401

0415

260437

0416

76OOO2

0417

221053

0420

321050

0421

0422

201050

0423

541052

0424

241060

0425

321061

0426

201050

042?

0430

52IO6O

0431

760012

0432

663777

0433

663777

0434

521061

0435

76OOI2

0436

650002

0437

600437

bb.

fm4.

fin2j

move ra2,io

lac ral
dac ac
Jmp dre-4
dap bb2
elf 2
move ral,ac

bb2,

lac

ac

mul

mem

dac

acl

dio

lol

lac

ac

sas

acl

stf

2

suap

sas

lol

stf

2

szf

1 2

;]mr)

•

/mul Inst

U

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0440

640030

szs 30

0441

600437

Jmp bb2

0442

221055

move mel^niein

0443

321052

0444

fni5.

.

0445

221053

move ral,ac

0446

321050

0447

201006

lac (Tlexo mul

0450

640005

szf 5

0451

201007

lac (flexo mus

0452

170567

J da inf

/print aG,io,mem

■ 0453

201050

lac ac

0454

fm3.

0455

620760

jsp ans

/print mach ans

0456

600437

jmp bb2

0457

221010

dd.

load ral^ 257431

0460

321053

0461

221011

load ra2/i 71713

0462

321054

0463

221002

return

0464

730003

0465

650040

szs i ^1-0

0466

620066

3sr> ran

0467

650010

szs i 10

18

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0470

620703

Jsp cc

/divide

0471

650020

szs i 20

0472

620415

Jsp bb

/multiply

0473

600465

Ji;ip .-6

0474

260516 sd.

dap sd2

/simulate dis

0475

201050

lac ac

0476

221051

lio io

0477

61005

xor (400000

0500

663001

rcl 1

/dis shift

0501

321051

dio io

0502

672001

rir 1

0503

642000

spi

/if io 17 a one

0504

761000

cnia

/comp AC

0505

652000

spi i

/add 1 to AC

0506

401012

add (1

/if iol7 is zero

0507

401052

add mem

/mb pad , carry

0510

642000

spi

0511

761000

cma

/if io 17 a one

0512

401013

add (777777

/comp ac

0513

241050

dac ac

/make -0 = -{-0

0514

640002

GZf 2

0515

620024

Jsp etl

0516

600516 sd2.

Jifip .

0517

760015 dss.

stf 5

/start for dis^mus

19

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

" 1

Remarks

0520

221014

load fd2,Jsp sd

0521

320722

0522

320754

dlo fd3

/setup for dis

0523

221015

load flii2,Jsp sm

0524

320427

0525

320454

d1o fm3

/setup for mus

0526

221016 .

load riu4, jsp ss2

0527

320421

0530

320444

d1.o fm5

0531

600457

Jmp dd

/start program

0532

760007 ess.

elf 7

/start for niul,dlv

0533

221017

load fd2,Jda d

0534

320722

0535

320754

dlo fd3

0536

221020

load fm2,Jda a

0537

320427

0540

320454

dlo fni3

/setup for inul,dlv

0541

221021

load fiii4,dzm io

0542

320421

0543

320444

dio fra5

0544

600457

jmp dd

0545

26O55O ss2.

clap . 3

0546

221054

move ra25io

0547

321051

20

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0550

6OO55O

Jmp .

/setup io for mufl

0551

260566 sm.

dap S1119

/simulate mns

0552

201050

lac ac

0553

221051

llo io

0554

672001

rip 1

0555

642000

spi

0556

401052

add mem

/io 17 a one J add

0557

662001

ril 1

O56O

673001

rcr 1

0561

21003

and (377777

■

0562

241050

dac ac

0563

321051

dio io

0564

640002

szf 2

0565

620024

jsp etl

0566

60 0566 sm9.

jmp .

0567

Infj

0570

26O7O2

dap ing

0571

200567

lac .-2

0572

663077

tv/pe

0573

730003

O'Dlk

663077

0575

730003

0376

663077

0577

730003

1 ,..

21

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (conHnued)

Location

Contents

Mnemonic Code

Remarks

0600
0601
0602

0603
0604

0603
0606

0607

0610

0611

0612

0613

0614

0615

0616

0617

0620

0621

0622

0623

0624

0625

0626

0627

764000

730003
201022

663077
730003
663077
730003
663077
730003
201023
663077
730003
663077
730003
663077
730003
764000

730003
201050
170002
201024
663077
730003
663077

space

lac (flexo ac

type

lac (flexo =
type

space

lac ac

J da opt

lac (flexo io

type

/print contents AC

22

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Amnemonic Code

Remarks

0630

730003

0631

663077

0632

730003

0633

764000

space

• 0634

730003

O635

201023

lac (flexo =

0636

663077

tjrpe

0637

730003

0640

663077

0641

730003

0642

663077

0643

730003

0644

764000

space

0645

730003

0646

201051

lac io

0647

170002

J da opt

/print contents 10

0650

764000

•»AV->

<Ai>^->^

SPACE

0651

730003

0652

201025

lac (ilexo liiem

O653

663077

t3rpe

.

0654

730003

0655

663077

0656

730003

'

23

PROGRAM LISTING

MAINOEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0657

663077

0660

730003

0661

764000

space

0662

730003

0663

201023

lac (flexo =

0664

663077

type

0665

730003

0666

663077

0667

730003

O67O

663077

O67I

730003

0672

764000

space •

O673

730003

0674

201052

lac mem

O675

170002

.Ida opt

O676

221002

repeat 2, re turn

O677

730003

0700

221002

0701

730003

0702

6OO7O2 ing.

jmp •

0703

26O757 cc.

dap cc2

0704

221052

move mem, me 1

0705

321055

0706

760002

elf 2

0707

201053

lac ral

24

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (conHnued)

Location

Contents

Mnemonic Code

Remarks

0710

76OOO3

clf 3

0711

241050

dac ac

0712

221054

lio ra2

0713

321051

dio io

0714

561052

div mem

0715

760013

str 3

0716

241060

dac aci

0717

321061

(11 iol

0720

201050

lae ac

/to div simulator

0721

221051

lio io

0722

fnP,

0723

760003

clf 3

0724

201050

lac ac

/does div = d1v simulator

0725

521060

sas acl

0726

760012

stf 2

0727

201051

lac io

0730

521061

sas iol

0731

760012

stf 2

0732

640003

szf 3

0733

600736

Jmp • 3

0734

650002

szf i 2

0735

6OO757

Jmp cc2

/no error

0736

640030

szs 30

0737

600757

jmp cc2

/reject error ss 3

9^

PROGRAM LISTING

MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Location

Contents

Mnemonic Code

Remarks

0740

221055

move meljinem

0741

321052

0742

221053

move ral,ac

0743

321050

0744

221054

move ra2,io

0745

321051

0746

201026

lac (riexo div

0747

640005

szf 5

0750

201027

lac (flexo dis

0751

170567

J da inf

0752

201050

lac ac

/print from slmu.lator

0753

221051

lio io

0754

fd3.

0755

76OOOO

nop

0756

620760

jsp ans

0757

6OO757 cc2.

Jmp .

0760

260777 ans.

dap an

C76i

201030

lac (flexo ans

0762

221002

return

0763

730003

0764

221031

lio (35

0765

730003

t^ro

0766

221060

move acl,ac

0767

321050

26

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TESTI (conHnued)

Location

Contents

Mnemonic Code

Remarks

OYYO

221061

—

move iol,io

0771

321051

0772

221055

move mel,mem

0773

321052

0?74

170567

J da inf

0775

221032

lio (34

0776

730003

tyo

0777

600777 an.

jmp ,

1000

7 constants

1001

3^'^

1002

77

1003

377777

1004

22

100.5

400000

1006

442443

1007

442422

1010

257'!-31

1011

671713

1012

1

1013

777777

1014

620474

ICI5

620351

1016

620545

1017

170210

27

Location

1020

170104

1021

341051

1022

616300

1023

743372

1024

7146

1025

Zj-46544

102-5

647125

1027

647122

1030

614522

1031

35

1032

34

PROGRAM LISTING
MAINDEC 4 - MULTIPLY AND DIVIDE TEST (continued)

Contents

Mnemonic Code

Remarks

28