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DEC-08-YXYA-D

December 1969

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Document:	dec-08-yxya-d
Order Number:	DEC-08-YXYA-D
Revision:
Pages:	7
Original Filename:	https://svn.so-much-stuff.com/svn/trunk/pdp8/src/dec/dec-08-yxy/dec-08-yxya-d.pdf

OCR Text

ID ENTI FI'CATIO N
Product Code:

DEC-OS-YXYA- D

(previously Digital-8-5-U- Sym)
Prod ucf Name:

Binary Punch

(Binary Core Dump to High-Speed
Teletype Punch)

Dofe:

October I , 1I969

Maintenance
Contact:

Software Information Service

BINARY PUNCH

(Binary Core Dump to High-Speed
or Teletype Punch)

ABSTRACT
This program provides a means of punching out information contained in selected blocks of

core

memory as binary-coded paper tape using the highespeed or teletype punch.

REQUIREMENTS

2 l

Storage

This program occupies 75 (decimal) core memory locations.

2.3

Equipment
Basic

PDP-8, 8/5, 8/1, 8/L with standard ASR'-33 or in addition standard PC03, PP8L PP8L

high-speed punch.

USAGE!

3.l

Loading
These programs are loaded by means of the Binary Loader. See Binary Loader Document

DEC-OS—LBAA—D or Paper Tape System User's Guide DEC—OB—NGCC-D For a complete discussion of
the Binary Loader and its use.

3 .2

Cal ling Sequence
None.

This program cannot be called as a suthutine.

3 .3

Switch Settings
The switch register is used to enter initial and final addresses of blocks to be punched as well

the number of blocks to be punched.

3 .4

Start Up/Entry

This program is used in the following manner.

3.4.l

Assuming the program is in memory as listed in 7.1, place the starting address 7465 in the

switch register and press the LOAD ADDRESS key.

3.4.2

Press the START key.

Leader will be punched and the computer will halt.

Set the number of

blocks to be punched into the switch register and press CONTINUE.

3.4.3

The computer will halt.

Set the initial address of the block to be punched into the switch

3.4.4

The computer will halt.

Set the Final address of the block to be punched into the switch

3.4.4.1

Note that the Final address must be greater than the initial address.

3.4.5

The indicated block of data will be punched.

trailer will punch and the computer will halt.
ter will

If only one block has been called For, the

If more than one block has been called for, the compu-

halt at step 3.4.3 waiting for a new initial address.

The second block will punch Following

completion of steps 3.4.3 and 3.4.4, etc.

METHOD

4 .1

Discussion

This is a basic program used to produce tapes acceptable by the Binary Loader (See
DEC-08-LBAA-D or DEC-08- NGCC-D)

Within each block, an initial address into which data is'to be loaded is punched as the First
two characters.

Following the initial address, each 2-character group represents the binary contents

of a computer word.

At the end of each block, a 2-character checksum is punched.

Reference to Section 8.], Flow Chart, will illustrate the computational approach.

Basically

data is picked up from memory, the most significant halFshifted right and punched, and the least

significant half masked out and punched.
A similar process is followed with respect to the initial address and the checksum which is

accumulated character by character as a block is punched

5 .1

FORMAT

External Data
See DEC-08-LBAA-D or DEC-08- NGCC-D Fora complete discussion of tape Format.

EX EC UTIO N TIME

This routine is output limited.

7 .1

PROGRAM

Program Listing
A listing of this program with BPUN located at 7465 is as Follows:

7514

1772

TAD

7515

7122

CLL

IIA

IGET

WORD

INOT

7516

2372

ISZ

7517

5326

JMP

PUNL

7522

2367

ISZ

/IS

7521

5275

JMP

NXBL

/HANDLE

CKSM

7522

1366

TAD

7523

7122

CLL

IJUST

PUNCH

ORIGIN

INDEX

THERE

ANOTHER

7524

4341

JMS

BINP

/GO

PUNCH

CHECK

7525

4332

JMS

PLOT

/GO

PUNCH

TRAILER

7526

7422

HLT

7527

5265

7532

2222

7531

7532

BLOCK?

BLOCK

SUM
CODES

IDONE

JMP

BPUN

7322

CLA

CLL

1372

TAD

M212

PLOT,
/TO

212

PUNCH

OCTAL

LEADER
'

CODES

TRAILER
7533

3373

DCA

CTRI

7534

1374

TAD

C222

/LEADER

7535

4361

JMS

PUN

IPUNCH

7536

2373

ISZ

CTRl

[ANOTHER

7537

5335

JMP

.-2

lGO

JMP

TEM]

7540

5732

7541

2222

PLOT

TRAILER
C

CODE

(AC)

L-T

CODE

NOT?

ANOTHER

PUNCH

IEXIT

BINP;

7542

3375

DCA

7543

1275

TED ,TEMI,

7544

7212

RTR

7545

7212

RTR

7546

7212

RTR

/BIN

PUNCH

HIGH

SPEED

PUNCH

(PC23:

PPRL)

PPRI:

*7465
7465

7322

7466

6226

PLS

7467

3366

DCA

CKSN

/CLEAR

7472

4332

JMS

PLOT

/GO

7471

7422

HLT

BPUN,

CLA

CLL
PUNCH

/INITIAL

/SET

CHECK-SUN

PUNCH

CODES

LEADER

SWITCHES=NUNBER

BLOCKS
7472

7624

LAS

7473

7241

CIA

7474

3367

DCA

/STORE

MINUS

NUMBER

BLOCKS
7475

7422

NXBL,

HLT

ISET
OF

7476

7624

LAS

7477

3372

DCA

75mm

7422

HLT

/SET

7521

7624

7522

7221

IAC

7523

3371

DCA

7524

1372

TAD

7525

7122

STL

7526

4341

SWITCHES=INITIAL

ADDRESS

BLOCK

SWITCHES=FINAL

BLOCK

ITO

PUNCH

/GO

PUNCH

WORD

TAPE

ADDRESS

LAS

PUNL:

JMS

7527

1372

TAD

7512

7241

CIA

BINP

ORIGIN
AS

TWO

LINES

BLOCK?

7511

1371

TAD

/AC=FA-IA

7512

7652

SNA

CLA

/WAS

LAST

7513

5322

JMP

n+5

/IT

WAS

THE

WORD
LAST

WORD

7547

AND

@376

/FIKST

AC
755%

4361

JMS

PUN

7551

1366

TAD

CKSM

7552

3366

vDCA

CKSM

7553

1375

TAD

TEMI

7554

@377

AND

SL6

IPUNCH

ILAST

TWO

AC
7555

4361

JMS

PUN

7556

1366

TAD

CKSM

7557

3366

DCA

CKSM

7560

5741

JMP

7561

WDDM

7562

6021

7563

5362

JMP

7564

6626

PLS

7565

5761

JMP

FUN:

IKOUTINE

IAND

989%

CKSM:

7567

DDQD

NB:

7579

DGQD

IA:

7571

“EDD

FA:

7572

7566

M212:

‘212

7573

DDDD

CTR};

7574

D2QD

C200;

299

7575

DEED

TEMI:

7576

D177

SL7:

177

7577'

@077

SL6:

PUN

(AC)

OCTAL

DIGITS

(AC)

EXIT

PUNCH

WITH

(AC)

{UNALTERED

/PUNCH
I

DIGITS

IEXIT

PSF

7566

7.l .2

0
u-l

OCTAL

6-11

IPUNCH

BINP

TWO

5-11

IEXIT

Teletype Punch
To use fhis program with the ASR-33 Teletype make the following changes:

7466

6846

TLS

/INITIAL

7:3/12i

i‘l:541

7‘33F‘

/i1iwL)

"FJfiQ

Grim?

'TL:J

/VlI£Ull

L.A I'T

PUNCH
iJl Ill

({aLl)

DIAGRAM

8.1

Flow Chart
Note that in this diagram circles

represent subroutine utilization not connectives.

SYART

l
CLA

LLL

EPUN

‘NITIALIZE
JMS PLOW

PUNCH LE ADER

ENTER NUMBER
0F BLOCKS

ENTER BLOCK
IA AND FA
TAD LKSM

,Mg’fiifilltpw,

PUNLH 7

CHECK SUM

LHARACYER‘J
INCRE MEMT CUSM

JMS PLOT

PUNCH

TRAtLER

TAD

CLL

[

JMUI-IJHt

]

|——~——~—._J