0 RESEARCH AND - Fisheries and Oceans Canada Library

i MPO -11Bill°11" II IIII 09053471

DFO - Library

C. DOEKES F. W. DEYS

L!":73r.1RV

( .7H .: 17.- ANC:1,31, APHY

MAR 2 0 1985 Mi.10.:H;:.Q1JE

INSTITU: (),:r.:ANCGAPHIQUE DE 13:DORD

0

TECHNICAL NOTE SERIES 79-1

1* Fisheries and Environment Canada

HP-9825A - INTERDATA MODEL 70 DATA TRANSFER LINK

RESEARCH AND

OCEAN AND AQUATIC SCIENCES CENTRAL REGION

CANADA CENTRE FOR INLAND WATERS BURLINGTON, ONTARIO

March, 1979

HP-9825A - INTERDATA MODEL 70

DATA TRANSFER LINK

by

C. Doekes

and

F. Deys

This is an internal technical report which has received only limited circulation. On citing this report the reference should be followed by the words "UNPUBLISHED MANUSCRIPT."

P.O. Box 5050 Burlington, Ontario L7R 4A6

ABSTRACT

This report describes the link between the HP-9825A

Calculator and the Interdata Model 70 Computer, which was developed

to effect the transfer of CTD (Conductivity, Temperature, Depth) profile

data from HP cartridges to 7-track magnetic tape. Included are program

documentation, listings, sample output and operating instructions.

i

ii

ACKNOWLEDGMENTS

The authors wish to thank the Ocean Instrumentation and

Survey Electronics Sections for the technical aid provided in developing

this project, J. Fiddes for typing, and E.O. Lewis for editorial assistance

and reviewing the final manuscript.

iii

iv

TABLE OF CONTENTS

ABSTRACT ...•

ACKNOWLEDGMENTS

TABLE OF CONTENTS

LIST OF FIGURES

INTRODUCTION AND GENERAL OVERVIEW

HardwarE;! ••

Software •

CONCLUSION • .

REFERENCES .

. .

APPENDIX A: FILE DOCUMENTATION

APPENDIX B : PROGRAM DOCUMENTATION AND SAMPLE OUTPUT •

APPENDIX C: OPERATING INSTRUCTIONS

APPENDIX D: PROGRAM LISTINGS

TRANSFER

RDP001

RDP002

APPENDIX E: USE OF THE HP-98036A INTERFACE

v

iii

v

vii

1

1

3

5

7

9

13

23

27

29

31

38

41

V.:(

LIST OF FIGURES

Figure 1: R&D Division Minicomputer System

Figure 2: Data Transfer System Flowchart •.

Figure 3: HP-98036A Interface Registers

vii

Page

2

4

45

viii

INTRODUCTION AND GENERAL OVERVIEW

In 1978, the Research and Development Division began CTD

(conductivity, temperature and depth) data reduction, error checking,

editing and plotting in the field using an HP-9825A programmable calcu­

lator (Deys, 1978). This meant that data was returned from the field on

Hewlett-Packard (HP) cartridge tape in a form readable by only the

HP-9825A. Further analysis, plotting and archiving, of the data has

normally been carried out on the CDC 3170 computer at.CCIW. Consequently,

it was necessary to develop a system for the transfer of da~a from HP

cartridge tape to 7-track (~11 ) magnetic tape.

One approach considered was to interface a 7-track tape drive

to the calculator resulting in a compact, easy-to-use transcription facility.

However, since 7-track tape drives were already installed in the in-house

Interdata computer system, it was decided, instead, to interface the

calculator to the computer and develop the appropriate software to effect

the transfer.

Hardware

A block diagram of the R&D computer system is shown in Figure 1.

The HP-9825A is interfaced to the Interdata Model 70 via a standard EIA ·

interface and data is transferred one character (8 bits ASCII) at a time

under program control. Data is listed on the line printer and written

to magnetic tape. The function of the buffered formatter is to control

the synchronous tape drives and to facilitate double buffered I/0.

1

Graphics Display

Keyboard and

Joystick

Control Console

Norpak Micro Video Processor

Printronix Hard Copy

Unit

HP-9825A Calculator

lnterdata Model 70

Current Meter Translation

Unit

Figure 1: R&D Division Minicomputer System

2

CAT Dual

Cartridge Tape Drive

Per tee 7-Track Tape

Drive

Buffered · Formatter

Per tee 7-Track Tape

Drive

Centronics Line

Printer

Software

Three computer programs were developed for this system

These are: TRANSFER, an HP-9825A program which reads profile data from

HP cartridge tapes and transfers it to the Interdata computer one

character (byte) at a time. RDPOOl, a program to read data from the

HP-9825A (one byte at a time, using the Operating System EIA driver),

convert it to standard ASCII, list it on the line printer, and write it

to 7-track magnetic tape in BCD format. RDP002, a utility program, dumps

profile data files from magnetic tape to the line printer. TRANSFER is

written in HPL while RDPOOl and RDP002 are written in Int~rdata Assembly

Language.

Figure 2 is a flowchart ot the system. The data file doc­

umentation is in Appendix A; Program documentation and sample output may

be found in Appendix B; Appendix C contains operating instructions; program

listings are in Appendix D and Appendix E describes I/0 instructions on

the HP-9825A and summarizes the information about the HP interface registers.

3

HP Cartridge

0 0

Profile Data

DATA IS !RANSFERRED FROM HP-9825A TO INTERDATA MODEL 70 VIA EIA INTERFACE

7-Track Magnetic Tape

BEGIN

TRANSFER (HP-9825A)

RDPOOl (INTERDATA MODEL 70)

RDP002 (INTERDATA MODEL 70)

END

Figure 2: Data Transfer System Flowchart

4

SYSTEM FLOWCHART TRANSFER PROFILE DATA ON liP CARTRIDGE TO 7-TRACK MAGNETIC TAPE

LISTING OF

CONCLUSION

The HP-Interdata link has been successfully used to

transfer Arctic 1978 CTD profile data from HP cartridge to 7-track

magnetic tape, thereby allowing further processing on the CDC 3170.

With relatively few modifications, the link will be used for further

CTD data transfers and also for general communication between the

calculator and the computer.

5

6

REFERENCES

Deys, F.W. 1978. Arctic CTD Data Processing System. ~Technical Report Series, Ocean and Aquatic Sciences, Central Region, Department of Fisheries and Oceans, Burl:Lngton, Ontario.

Hewlett-Packard. HP-9825A Calculator, General and Extended I/0 Programming Manuals.

Hewlett-Packard. HP-98036A Serial I/0 Interface installation and Service Manual.

7

8

APPENDIX A: FILE DOCUMENTATION

9

10

INPUT FILE:

Each file on HP cartridge contains the header information and

the CTD data of one complete profile. Since there are no formatting capabili­

ties when writing to cartridge, the data was written as stored in the

calculator (i.e. one parameter array at a time).

The format of the file is as follows:

Depth (m) 50 values

Temperature (oC) 50 values

Salinity (ppt) 50 values

Raw conductivity 50 values

Sigma-t 50 values

Header information 13 values

The header array contains the following information:

1) Station number;

2) Sequence number;

3) Consecutive number;

4) Julian day;

5) Year;

6) Hour (GMT);

7) Mi:nutes past the hour;

8) Degrees - latitude;

9) Minutes (1/lOO's) - latitude;

10) Degrees - longitude;

11) Minutes (1/lOO's) - longitude;

12) Sounded depth; and

13) Ice thickness.

11

Profile Data File:

Each profile constitutes one data file on 7-track magnetic

tape and successive profiles are separated by file marks. Each file consists

of a header record and a number of data records. Each data record contains

values for temperature, salinity, and sigma-t obtained at a given depth in

the profile.

The header record layout is as follows:

The data

Characters 1 - 6 Station number

Characters 7 - 12 Sequence number

Characters 13 - 18 Consecutive number

Characters 19 - 24 Julian day

Characters 25 - 30 Year (e.g. 000078 for 1978)

Characters 31 - 36 Hours

~ Characters 37 - 42 Minutes Time of Day

Characters 43 - 48 Degrees

I Characters 49 - 52 Minutes

Characters 53 - 54 Seconds

Latitude

Characters 55 - 60 Degrees I Longitude Characters 61 - 64 Minutes

Characters 65 - 66 Seconds

Characters 67 - 72 Depth sounded (metres)

Characters 73 - 78 Ice thickness (metres)

record layout is as follows:

Characters 1 - 8 Depth (metres)

Characters 9 - 16 Temperature (oC)

Characters 17 - 24 Salinity (ppt)

Characters 25 - 32 Sigma-t

12

APPENDIX B: PROGRAM DOCUMENTATION AND SAMPLE OUTPUT

13

14

PROGRAM

AUTHOR

DATE

COMPUTER

- TRANSFER

- F. Deys

- July, 1978

~ HP-9825A

PERIPHERALS - HP-98036A Serial I/O Interface

PURPOSE - This program reads CTD data cartridges created on the HP-9825A

calculator using, for example, the Arctic CTD Data Processing

System, and transfers it to the Interdata Model 70 computer

via the 98036A Serial I/O Interface.

PROGRAM DOCUMENTATION -

TRANSFER:

It is advisable to refer to the information about I/O on the

HP-9825A in Appendix E before reading further.

The following is a description of the tasks performed in each

part of the program:

The arrays are dimensioned and the required transmit mode is

set in the interface by writing the appropriate value to the

R4C Mode Word.

MAIN LOOP:

The file number of the profile to be transferred is entered via

the HP keyboard by the operator. The specified data is then

read into memory from the data cartridge. Using a rounding

function, each of the 13 numbers contained in the header

array are broken into 6 single digit numbers (i.e. 681 is

broken down into 0,0,0,6,8,1). In the case mf ice thickness,

the value is first multiplied by 10 and in the case of

latitude and longitude minutes, the values are multiplied by

100 before conversion and transmission, so that for each

number, sufficient significant.digits will be transferred.

Each of these single digit numbers is written to the R4A

register after the R4E Status Word has been checked to determine

if the transmitter is ready. After this has been completed a

carriage return is written to the R4A register to indicate the

15

DONE:

OUTPUT:

end of the header information. Subroutine "OUTPUT" is

called 4 times (once for each data value) for each depth

at which data has been stored on the cartridge. A carriage

return is written to the R4A register at the end of each

logical record. Each logical record consists of 4 data 0 values (depth (M), temp (C), salinity (ppt) and sigma-t),

measured and recorded at a given depth.

After the last logical record is transferred to the Interdata,

a line feed is written to the R4A register, followed by a

carriage return. It should be pointed out that each of the

above-mentioned writes to the R4A register are preceded by a

test to ensure that the R4E Status Word indicates that the

transmitter is ready. If the transmitter is not ready, the

program waits until it is.

This subroutine writes data to the R4A register in much the

same manner as the header information is written to the R4A

register. The data is multiplied by 1000 so that values can

be transferred correctly to 3 decimal places. A sign (+or -)

is written to the R4A register, followed by 6 single digit

numbers representing the data value to be transferred; (i.e.,

32.681 is written as +032681 and -1.81 is written as -001810).

Again, before each digit is written to the R4A register, the

R4E Status Word is read to ensure that the transmitter is

ready.

16

PURPOSE

AUTHOR

RDPOOl

- Program to read CTD data from the HP-9825A programmable

calculator, translate it into standard ASCII characters,

write it to magnetic tape and list it on the line printer.

- C. Doekes, 1978

LANGUAGE - Interdata Assembly Language

COMPUTER/OPERATING SYSTEM -

Interdata Model 70/B0SS

PERIPHERALS - HP-9825A, Control Console, Line Printer, Magnetic Tape Drives.

PROGRAM DESCRIPTION -

The program reads data from the HP-9825A one logical record

at a time (actually, the operating system (B0SS) reads data

one character at a time via an EIA interface), converts the

data into standard ASCII, lists it on the line printer and

writes it to 7-track magnetic tape in BCD format. Each logical

record is one data point of a CTD profile and consists of

depth, temperature, salinity, and sigma-t values. Each profile,

which includes a header record and up to 50 data points is

written as a separate data file on the output tape.

Error conditions detected are as follows: Error in data transfer

from HP-9825A, Printer error, and Magnetic tape write error.

In each case an appropriate error message is written but a

detailed examination of the error code does not occur.

OPERATING INSTRUCTIONS -

Since operation of this system requires programs and procedures

on both the HP-9825A and the Interdata computer, a separate

section outlining the operating procedure may be found in Appendix C.

PROGRAM LISTING AND SAMPLE OUTPUT -

A program listing is included in Appendix D. A sample of the

printed output from RDPOOl follows this documentation.

17

The first line is the header record and is followed by a

number of data points. Note that because of space limit­

ations, the whole header record is not shown. The file

and record format is described in Appendix A (File Docu­

mentation).

18

RDPOOl OUTPUT

00082~00000~00000~0000790000780000~5000020000074004046000095000881 +002. 700-00~. 778+032. 323+026. 027 +003. 000-00~. 78~+032. 323+026. 027 +004. 000-00~. 78~+032. 323+026. 027 +005. 0~0-00~. 78~+032. 322+026. 026 +006. 050-00~. 78~+032. 323+026.027 +007. 020-00~. 78~+032. 327+026.030 +008. 060-00~ 782+032. 33~+02& 034 +009. 020-00~. 782+032. 337+026. 038 +0~0. 030-00~. 783+032. 352+026. 05~ +0~~- 000-00~. 784+032. 372+026.067 +012. 020-001. 784+032. 379+026.072 +013. 050-001. 780+032. 398+026. 087 +014. 000-001. 780+032. 405+026. 093 +015. 000-001. 779+032. 412+026. 099 +017. 510-001. 783+032. 425+026. 110 +020. 000-001. 780+032. 449+026. 129 +022. 520-001. 765+032. 485+026. 158 +025. 020-001. 765+032. 496+026. 167 +027. 510-001. 754+032. 520+026. 186 +030. 000-001. 751+032. 553+026. 213 +032. 500-001. 743+032. 579+026. 234 +035. 020-001. 730+032. 616+026.263 +037. 520-001. 722+032. 656+026. 296 +040. 010-001. 707+032. 716+026. 344 +042. 550-001. 694+032. 782+026. 397 +045. 000-001. 690+032. 804+026. 415 +047. 550-001. 685+032. 8~0+026. 420 +050. 020-001. 687+032. 824+026. 43~ +052. 510-00~. 698+~32. 859+026. 460 +055. 010-001. 704+032. 886+026. 482 +057. 520-00~. 708+032. 90~+026. 494 +060. 020-001. 726+032. 970+026. 550 +062. 5~0-001. 724+033. 0~~+026. 584 +06~ 010-001. 718+033. 024+02~ 594 +067 . .520-00.1.. 7:15+033. 034+026. E:•:l2 +070. 010-001. 71:1+033. 046+026. 6~1

19

RDP002

PURPOSE - Program to dump CTD data from the file produced by RDPOOl.

AUTHOR - C. Doekes, 1978

LANGUAGE - Interdata Assembly Language

COMPUTER/OPERATING SYSTEM -

Interdata Model 70/B0SS

PERIPHERALS - Control Console, Line Printer, Magnetic Tape Drives.

PROGRAM DESCRIPTION -

This program reads profile data from 7-track magnetic tape

and prints it on the line printer. The format used is

header record followed by data points (one per line) and

one profile per page of output. Error conditions detected

are: Magnetic tape error, and Line printer error.

OPERATING INSTRUCTIONS -

1. Load the computer program (load module) from cartridge tape.

2. Mount the tape to be dumped on one of the tape drives.

3. Be sure the printer is ON and on-line.

4. Assign logical unit 1 to the physical unit number of the

tape drive on which the tape was mounted.

5. Assign logical unit 7 to the printer physical unit number.

6. Start the program at the load address.

7. The program reads and prints records until an EOF is

read - this is the end of a profile.

8. The program asks the operator (via the console) if

another profile is to be dumped.

9. If the operator response is Y (yes), the next profile on

the tape is dumped.

10. If the response is anything else, the tape is rewound

and program execution halts.

PROGRAM LISTING AND SAMPLE OUTPUT -

The program listing is in Appendix D. A sample of program

output is on the next page. The first line is a header

20

record and the remainder are data records (1 data

point/line). Note that the header record is truncated

because of lack of space on the page. The section on file

documentation (Appendix A) describes the header and data

records in detail.

21

RDP002 OUTPUT

00082~00000~000001000079000078000015000020000074004046000095000884 +002. 700-00~. 778+032. 323+026. 027 +003. 000-001. 78~+032. 323+026. 027 +004. 000-00~. 78~+032. 323+026. 027 +005. 0~0-00~. 781+032. 322+026. 026 +006. 050-001. 781+032. 323+026. 027 +007. 020-00~. 781+032. 327+026. 030 +008. 060-001. 782+032. 33~+026. 034 +009. 020-00~. 782+03~ 337+026. 038 +010. 030-001. 783+032. 352+026. 05~ +011. 000-001. 784+032. 372+026. 067 +0~2. 020-001. 784+032. 379+026. 072 +013. 050-001. 780+032. 398+026. 087 +0~4. 000-001. 780+032. 405+026. 093 +015. 000-001. 779+032. 412+026. 099 +017. 510-001. 783+03~425+026 1~0 +020. 000-001. 780+032. 449+026. ~29 +022. 520-001. 765+032. 485+026. 158 +025. 020-001. 765+032. 496+026. 167 +027. 510-001. 754+032. 520+026. 186 +030. 000-001. 751+032. 553+026. 213 +032. 500-001. 743+032. 579+026. 234 +035. 020-00~. 730+032. 616+026. 263 +037. 520-001. 722+032. 656+026. 296 +040. 010-001. 707+032. 716+026. 344 +042 550-001. 694+032. 782+026. 397 +045. 000-001. 690+032 804+026. 415 +047. 550-001. 685+032. 810+026 420 +050. 020-001. 687+032. 824+026. 431 +~352. 51(1-001. 69E:+(G2. "859H326. 460 +055. 010-001. 704+032. 886+026. 482 +057. 520-001. 708+032. 901+026. 494 +060. 020-001. 726+032. 970+026. 550 +062. 510-001. 724+033. 011+026. 584 +065. 010-001. 718+033. 024+026. 594 +067. 520-001. 715+033. 034+026. 602 +070. 010-001. 711+033. 046+026. 611

22

APPENDIX C: OPERATING INSTRUCTIONS

23

24

OPERATING INSTRUCTIONS

It is assumed that the reader is familiar with the operation

of the HP-9825A and the Interdata Model 70/B~SS Operating System.

1. Connect the HP-9825A to the appropriate EIA interface cable on

the Interdata.

2. Turn on the calculator and the computer and peripheral devices to be

used.

3. Load program "TRANSFER" from HP cartridge into the calculator memory.

4. Insert the HP cartridge containing the data to be transferred into

the calculator tape drive.

5. Load program RDPOOl from cartridge into the Interdata computer.

6. Assign physical unit numbers to logical unit numbers as follows:

X'OB' to 06, X'62' to 07 and X'2A' or X'6A' (depending on which

magnetic tape drive is used) to 02.

7. Mount a 7-track magnetic tape on one of the Pertec tape drives. Be

sure that a write ring was inserted.

8. Press "RUN" on the HP-9825A and enter the nutnber of the file containing

the data to be transferred.

9. Start execution of RDPOOl at the load address. The profile data will

be read from the HP-9825A and written to the line printer and to mag­

netic tape. If any errors occur during this process, the transfer halts

and an appropriate error message is printed.

10. When the transfer is complete, a message asking if any more data is

to be transferred is displayed on the control console and a message

asking for the next file number is displayed on the calculator display.

If the operator enters "Y" to the Interdata and a file number to the

HP-9825A, the next profile is transferred to magnetic tape. If the

operator enters anything else on the console, the magnetic tape is

rewound and program execution halts.

25

26

APPENDIX D: PROGRAM LISTINGS

TRANSFER

RDPOOl

RDP002

27

28

~.3: "TF.:At·lSFEF.:": 1 :

~;: I.•JtC. 2' 1 4: ll,lt.b 2,64 5: la.ltb 2,95 6: l.a.lt.b 2,55 7: l,1,1t.c. 2,0 C• • I.J '

9: "t1Alt~ LOOP": 1[1:

11: 12: 1 ::::: 14: 15: 16: 17:

e·nt. "Ent. ~::· r f i 1 e· # t.. c1 be t.. rc1.n::.e· r re·d"' A 1 df A, AC * J, E:C * J, CC * J' DE ·* J' EC * J, FC * J

19: 2~Zn 21: .... , ...... .:::..:::.• ·~·-· . .:::. .;) . 24: 25: 26: 27: 2a: 29: :::: ~z1 : 31: .... , ...... . .:a.::, • ·-:.·-::·· ........... ~:4: :35: :36: :37: ·":~•:• . .......... :3'51: 4~]:

41: 42: 4::::: 44: 45: 46: 47: 48: 4 13: 5~Zn 51:

F[ 151 ]* 100FC 13 H FC 11 H 1 £1t1F[ 11 J FC 1:3 H10FC 1:::: J fc1r ~::=1 t.o 1:::: 1 t1t100t1 1

'1~ f'c1r I=1 t.l) 6 PrndCFCKJ/Y-.4999,0)2 FCKJ-Z*YFCKJ;Y/10Y l,1,lt. C. 2' 1 l~.lt.b 2, 55 rdb(2)P if bit. (II 1 ::.::::.::>::::.::::.::::.:: 1 11

' p) =0; ,j (I'IP -1 l,~lt,.C. 2,0 l~ltb 2' z r1 e· :)~ t, I ne·:x:t. f( '·~'t.e 2, 1 la.lt..b ;2,55 rdb(2)P if' bit. (" 1 ::<>::::<>::>::::< 1 "' p) =0; .j I'I'IP -·1 '·~' t.. c. 2 , ~z1 l,1,1t,.b 2,13 f'c1r 1<=1 tc1 5£1 l,1,ll:l i t,. 1 f:J ell 'OUTPUT'CA[I<J) e 11 'OUTPUT' ( BC f::: J) ell 'OUTPUT'CCCKJ) ell 'OUTPUT' CEC f( J) if f0=50; o:,t. c1 "DOt·lE" if' AC K+l J<-:3; o:,t.c1 "Dot·lE" l1.1t.c. 2, 1 l,a,lt,.b 2' 55 rdb(2)P if' bit. (II 1 ::<::<>::::.::::<::.:: 1 ,, 'p) =~Z1; ,j (•'IP ·-1

l,1,l t. (, 2 ' t~ l~lt.b ;2, 13 n e· ::< t. f:::

"Dot~E":

52: l,aJt.l:. 2' 1 5:3: l.~lt.b 2,55 54: rdb(2)P 55: if' bit (" 1 ::.::::<::<)<>::>:: 1" 'F') ='J j .j (''IP -·1 *26491

29

c· ...... ._11::·. 5?: 5:::: 59: 6~H 61: 62: 6:;:: 64: 65: 66: 67: 6E:: 6'3: 7~~1: 71: 72: ..., •"'I • I' .,:1 •

74: ?5: -!1 .....

( 1:::1. '? 7: ?:::: ?·~: ::: ~~~ : ::: 1 :

s:;:: :34: :::5: :::6:

I.~Jtc ~~,o l,1,i"t,.b ~~, :l~~

l,aJt.C. ~:, l. 1 •• ,11;. b 2' 5!=5 rdb(2)F' if bit. (II 1 ::-::::-::::-::::-::::-::::< 1 '', p) ='J; ,j f1'1P -·1 l,.,lt,. c 2, ~:l

I,,Jtb 2,1:3 ·::~t.. 0 II ti1A H~ LOOP II

.::·nd

II OUTPUT II:

P1*1~)[10P1 Prnc:I(P1, ~~1)pl l,1,lt,.c, 2,1 l,1,lt,.b 2, 5~i rdb(2)F' if' bit,. (II 1 ::-::::-::::·::::·::::·::::< 1 11

, p) =0; ,j f1'1P -1 1,1.1 t. c. 2 ' ~) u pl >==e:n 1,~.1t.b 2, 11 + 11

if p1([q1,1Jt..b 2,~~-~~;pp:·-1P1

1 [1 ~) ~) ~1 [1 1'1"

f',)t" I=l t..c, 6

r:~ 1·-Z*~'f'~-:.1; ~.f~ ..... l [1 1'1'

1

l,l,lt,. c. 2, 1 ~~Jt.b ~~,~55 rdb(2)F' if' bit. (II 1 ::·::::<::·::::<>::::< 1 11

, p) :::[1; ,j f1'1P -·1 1,1.11:. c. 2' [1 1.~.1tb 2,z n~::·::-::t.. I t">.E•t.

e·nd

30

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*

PAGE J.

* PF.:OC:iRAI•1 TO F~EAD PROFILE C:•ATA FROI1 HP-9825A AND ~·JF.: I TE IT * ON MAGNETIC TAPE <7-TRACK).

* * CONSOLE = LU 0 * HP-9825A = LU 6 * LINE PRINTER = LU 7 *MAG TAPE = LU'2

* R:1.5 EI:;"J.U :1.5 R:14 EI).U :1.4 R:13 E•).U :1.3 R:1.2 E@J :12 R1.:1. EI).U 1.:1 R:l0 EQU :1.0 F.:9 EG!U 9 R8 EI).U 8 R7 EI:;"J.U 7 R6 EI).Ll 6 ~~5 EG!U "" ._I

* * START BFFS X..-0 ... )1.4 NEXTF svc 1.JPBLK0

svc L PBLK6

LB R5JTBUF2

CLHI R5) X,. (1059 ...

BFFS :X:.-"3-' .. 5 s .... •c: L PBLK:1.:1.

svc 3) 0

* S'·lC L PBLK:1.

LB F.::1.4) PBLK1. +2

CLHI R:1.4) X ... (1IZ100 ...

BTC X..-3..-)ERREX

BAL R:1.5~ r~LHDR

DC A<IBUFF) [.'C A<OBUFF)

LBADD DS 2 LH R1.4~LBADD

STH R:1.4~PBLK7+6

31

MESS TO OPERATOR

F.:EAD RESPONSE

BR IF RESPONSE l•JAS II., II F~El·J I ND TAPE

EOJ

READ HEADER RECORD

BR IF UNSUCCESSFUL REA

TRANSLATE HEADER

INPUT BUFFER ADDRESS OUTPUT BUFFER ADDRESS ADRESS OF LAST BYTE

PAGE 2 ~::nB6R

~303:EF.: 26Ei AIS F.:14~ ~< .·· i .·· (U~14~~1R 24DD LIS R13~ ::< ·' ['J ·'

(1042R D2l)E STB R1.3: .. (1 ( Ri4) STORE c. R. AT END OF RECOFW 0000

(U)46R 40E(1 STH F.::l4, PBLK2+6 STORE LAST B'T'TE A[1DR. IN PA~:H.

OiiCR ~)(14AR E110 S'v'C L PBLK2 l.JRITE HEADER TO PRINTEF.:

~3116R

~304ER D3E(1 LB F.::l4~PBLK2+2 0118R

(1052R C5E~3 CLHI F.::l4, ::<,. (1(1(1(1,. (1(1(1(1

0(156R 4230 BTC ::< ··· 3 ··· .. EF.:EX3 BR IF PRINT ERF.:OR (1(tE4R

0~~15AR E11~3 S'v'C L PBLK7 l.JRITE HEA[)EF~ TO 1·1AG TAPE ~~t180R

~)(t5ER D3E(t LB R:l4~PBLK7+2

0182R 0062R C5E0- CLHI R14~ X·'0000 ...

(1~)~~1(1

(U366R 42:~(1 BTC :=< ... 3: ..... E~:E~·!.4 E:f;: IF TAPE l·JF.: I TE ERF~OR

OOECR ~~u)6AR E110 NE::<TR S\··c: L PBLKi READ DATA RECORD

010ER 0~36ER D3E0 LB F.:1.4, PBLK1.+2

~311.~3R

~3072R C5E0 CLHI R14~ X,. (1000 ... ~~U~1(1(1

0076R 4230 BTC X ... 3 ... ~EREX2 BR IF READ ERROR (t(tDCR

007AR 24E0 LIS R14~ X·'0 ... ~)(t7CR 40E0 STH R14~STATS ZERO X LATE STATUS

(108AR ~~t080R 41F0 BAL R1.5, ~<LDR TRANSLATE DATA RECORD

031AR (t084R ~31EER DC A<IBUFF) 0086R ~3284R DC A<:OBUFF) ~~U388R LBADR DS 2 ~~108AR STATS DS 2 STATUS OF OPEf;:AT I ON O~~t8CR 4::::E(t LH R1.4,LBADR PICK UP LAST B'T'TE ADC•F~ESS

~:308BR

0090R 40E0 STH R14,PBLK7+6 0186R

(n394R 26E1. AIS F~1.4, X ... 1 ... 0~396R 24DD LIS R1.3,X_..D ... 0098R D2DE STB R1.3,0(R1.4) STORE C. R. AT END OF BUFFEP

0000 ~3(t9CR 40E0 STH R1.4,PBLK2+6 STORE LAST BYTE ADDRESS

~31.1.CR (h3A(tR E110 S\•'C 1.,PBLK2 PRINT THE LINE

01.16R 00A4R D3E0 LB R:l4,PBLK2+2

01.18R ~~t0A8R C5E0 CLHI R1.4,X ... 0000 ...

0000 32

PAGE 7 ...>

OOACF~ 423:(1 BTC ::< ,. 3 ··· ~ E~:EX3: BR IF PRit·n E~:~:OI':

~10E4R

0080~: E:1:V3 s··lC L PBLK7 ~·JRITE RECO~:D TO TAPE €1:1BOR

~U~184F~ [,'J:EO LB R:14~PBLK7+2

~3:182R

(1~18E:R C5E0 CLHI R:14~X,..0000,.

0~3~3~~1

~~U38C~: 423(1 BTC X ... 3 ... ~ ERE?-~4 BR IF TAPE l>t~:ITE E~:~:OR

00ECR 00C0R 48E0 LH R:14~STATS c. R. OR L. F. ?

~308AR

(n3C4R C5E€1 CLHI ~:1.4. x···~3~3eo-·

~~1 ~~1(1 ~~1

~3~3C8R 433(1 BFC X ... 3:,..~NEXTR BR IF C. R. (H36AR

00CCR E:1:10 svc 1.~PBLK9 lo.IRITE EOF 01.D0R

€1€1DOR 4300 BFC X ... 0 .... ,NEXTF NEXT FILE (U302R

~~10D4R E1.1.0 ERF~EX S'v'C 1.,PBLK4 l·JRI TE ERROR 11ESS. 01.1.E~:

0€1D8R E1.30 svc 3, (1

(U)(10 OODCR E1.1.0 EREX2 svc 1.~PBLK5 lo.IRITE ERROR 11ESS.

01.38R 00EOR E1.30 svc 3,(1

0000 00E4R E1.1.0 EREX3 svc L PBLK8

01.88R 00E8R E1.30 svc 3~ 0

~3(100

(1(1ECR E1.1.0 EREX4 svc 1.~PBLK1.0 ~31.D4R

€10FOR E1.30 svc 3~0 0~~1(1(1

* 00F4R 2800 PBLK0 DC ~< .... 2800" CONSOLE l.JRI TE BLK 0~3F6R 00~30 DC X"(H300" ~30FE:R 00FCR DC A<TBUF1.) ~3~~1FAR 01.0DR DC A(TBUF1.+1.7) (10FCR 434F TBUF1. r}c C .... COt·H I NUE ? ..,. OR N ...

4E54 494E 5545 203F 2020 5920 4F52 204E

~31.0ER 4806 PBLK1. DC X·' 48~~16 ·' ~:EAD PARA1·1ETER BLK 01.:i0R (H)00 DC X·'00~30"'

01.1.2R 01.EER DC A<IBUFF) 01.:14R 027:1R DC A<IBUFF+:13:1) ~31.:16R 2807 PBLK2 DC X,..2807"' l.JRITE LINE PARI•1. BLK 0:1:18R 0000 . DC X"'0000"

33

PAGE 4 0:1:1fiR 02:3.:tR DC A<OBUFF) 0:1:1CR 03:07R oc A<OBUFF+:13:1) (1:1:1ER 2:=:~~1~~1 PBLK4 DC :~~ ... 2E:~30 ··· EF':ROR 1·1ESS. PAF.:I•1. BLK. (1:120R oo~:::1~:::1 DC X,. c.:u:::u:::n3 ·' 0:122R 0:126R DC A<EF~I14)

C.:11.24F~ (1:13:6F.: DC A ( ERI•14+1.6) 01.26R 5245 ERt14 DC C ... READ HEADER ERROR .··

4:144 2048 4541. 4445 5220 4552 524F 5220

01.38R 2800 PBLK5 DC ::-~ ... 2:=:00 ,.• ERROF': t·1ESS. PAF.:I1. 8LK 01.3AR 0000 DC X ··· €1000 ,. 01.3CR 01.40R DC A(ERt·15) 01.3EF': 01.55R (JC A< ERt15+21. > ~31.40R 5245 ERt·15 DC C ... READ DATA F':ECORD ERROR ...

41.44 ~~044

4:154 4:120 5245 434F 5244 2045 5252 4F52

01.56R 480~3 PBLK6 DC X..-4800 ... CONSOLE READ BLOCK 01.58R (1(100 DC X ... 0~300 ... 01.5AR 01.5ER DC A<TBUF2> 01.5CR 01.AFR DC A<TBUF2+81.) ~Z1:15ER TBUF2 DS 82 (1:180R 2C:02 PBLK7 DC x .. ·2:=:e2"' ~·JRI TE t·1AG TAPE RECORD BLK 01.82R ~3(100 DC X,. €11:"::100·' (11.84R 0284R DC A<OBUFF> 01.86R 031.9R DC A<OBUFF+1.49) 01.88R 2:::00 PBLK8 C•C X..-2800 ... PRINT ERROR 1·1ESS. (1:18AR (1(1(1(1 DC ::-:: ·' (UZ100..-01.BCR ~Z1:1C(tR DC A<ERt·18) 0:1BER ~3:1CFR DC A ( ERt·18+1.5) 01.C0F.: 51:"::152 ERt-18 DC C ... PRINT LINE ERROR ...

494E 5420 4C49 4E45 2045 5252 4F52

01.DOR 8802 PBLK9 DC ::-:: ,. 8802 ... ~·JRITE EOF ON TAPE BLK 0:1D2R (n300 DC X..-0€100/ ~31.D4R 2800 PBLK1.0 DC X/2800/ t··1AG TAPE ERROR 1·1ESS. ~3:1D6R ~3000 DC X/0000/ 01.D8R 0:1DCR DC A<ERt11.0)

34

PAGE r:-

·-· ~::H.L•AF<: 0:1E9R I)C A< ERI·1i~3+:13:) (1 :1. L• C F~ 4D4:1. ERt1:10 DC c--l·lAG TAPE EF$:Or;;:-·

4720 544:1. 5045 2045 5252 4F52

0:1EAF<: C002 PBU<i:l DC X,...C002" REl..JIND NAG TAPE 0:1ECR 0000 C•C X..-0000"

* 0:1.EER I BUFF [>S :1.50 ~3284R OBUFF DS :1.50

* * XLDR

* * ROUTINE TO TRANSLATE A DATA RECORD.

* €13:1.AR D€15C. XLDR STt·l R5~XLDRS SAVE 03B2F<:

03:1.ER C890 LHI F<:9~ X,. 003:0,. TO ADD TO NUI·lERIC (U)3:~3

(13:22R 24AA LIS R:l.e~ x···A-· TO TEST FOR I·~UI·lER I C ~3324R C850 LHI RS~ X,. 002E ... DEC. PT. CODE

002E 0328R 24DD LIS R:1.3~X,.D" c. R. CODE 032AR 2483 LIS R8~X"3,. DEC. PT. COUNTER 032CR 246A LIS R6~X"A" L. F. CODE 032ER 48EF LH R:1.4J0(R:1.5)

(10(10 0332R C870 LHI R7~:1.32

0084 0336R 0A7E AHR R7JR:1.4 <R7>=END ADDRESS OF It·~PU1

0338R 27E:1. SIS R:1.4JX":l." <R:14)=INPUT BUFFER AD DR. 033AR 48BF LH F<::l.:ll 2 ( F<::1.5)

~z1~z1~Z12

~333ER 27B:l. SIS F~:1:1.~ X,. :1.,. INIT OUTPUT BUFFER PTR 0340R 26E:1. NEl..JCH AIS R:1.4~ X" :1" INCR INPUT BUFFER PTR £1342R 05E7 CLHR R:1.4~R7

0344R 43::::e BFC X"8"JERR:1. BR. IF BE'T'OND END OF INPt: i

~338CR

0348F<: D3CE LB F<::12J 0 ( R:1.4) PICK UP DATA BYTE 0000

034CR 05CD CLHR R:12~R:1.3 EG!UAL TO c. R. ? 034ER 4330 BFC X·'3", CRCHR BR IF 'T'ES

~3380R

0352R 05C6 CLHR R:12~R6 EQUAL TO L. F. ? 0354R 4330 BFC X"3"~LFCHR BR IF YES

037AR 0358R 05CA CLHR R:1.2~R:1.0 ~335AR 2382 BFFS X"8,.~2 BR IF GE :1.0 035CR 0AC9 AHR R:1.2~R9 NUt·lERIC TO ASCII 035ER 268:1. AIS R:l:l~X":l" INCR OUTPUT PTR 0360R D2CB STB R:1.2~0<R:1.:1.)

0(100 0364R 268:1. AIS R8~ X":t."

35

PAGE 6 ~:::c~66R C:58~~1 CLHI R8, :>=: ··· (10€17 ,.

0007 ~:::G6A~: 4230 BTC ::< ,. 3 ··· .• NEl·KH BR IF t·m DEC. PT. TO BE..

€134~:::1~:

036EF~ 268:1 AIS R:1:1, X··· :1 ··· 037~Z1R D258 STB R5,0(R:1:1) STORE DEC. PT.

0(1(1(1 €G74R 248~:::1 LIS R8, x ... ~:;:1-·

€G76R 430~:::1 BFC X''0·', NEHCH 03:4£1R

€G7AR 249:1 LFCHR LIS R9,X"':1"' €G7CR 4(19F STH F-:9, 6<R:15) SET STATUS FOR LINE FEE~'

(1(1~::16

€G8€1R 4€18F CF.:CHR 5TH R:1:1,4(R:15) SET LAST B'T'TE ADDRESS I:':U:::1 (14

€G84R D:15€1 U·1 ~:5, :x:LDRS F.:ESTORE €G82F.:

0388R 43~Z1F BFC x.-0-·. 8<R:15> RETURt~ ~30~)€:

~Z138CF~ E:1:10 EF.:R:1 S'·IC :1,PBLKA PRINT ERROR NESS. ~339.:~R

039€1R E:13:~:::1 s• ... •c: 3:, (1 EXIT OO€n:;:i

* 0394R 2800 PBLKA DC x .. ·2:=:~.Z10 ... ERROR t·1ESS. PARI'l. BLK 0396F.: (1(100 ['JC :...;-·(1000"' €G9E:R ~)3:9CR DC A<ERHA> €139AF~ €G8€1F~ DC A<ERt·1A+20) 039C~: 494E ERt·lA DC c-· INPUT BUFFER OVERFLOl.J ...

5(155 542~)

4255 4646 4552 2~:::14F

5645 5246 4C4F 5720

* ~)382F.: ::-::LC•RS DC .-.. -. -· .:::..::.

* * * XLHDR

* * ROUTINE TO TF.:ANSLATE HEADER RECORD.

* 03(~:3R D070 XLHDR STt'l R7, ::<LHDRS SAVE

0438R 03CCF~ 48EF LH R:14,0<R:15)

00~:::1(1

~)3[:•0F.: C870 LHI ~:7. :132 ~)(184

~Z13D4R 0A7E AHR R7,R:14 (R7)=END A[)DR. OF BUFFER (($D6R 27E:1 SIS R:14,X"':1"' (R:14)=8UFFER LEHGTH-:1 03DE:~: 488F LH R:1:1. 2 ( R:15)

36

PAGE 7 (1(1(12

€13:DCR 2781. SIS R1.1., X ,.1. ··· ( R:t.1.) :::-OUTPUT BUFFER Hl:O[ol,' 03DER C890 LHI R9, ~< ·' 003~1··· TO AO(:t TO NUI·1ERIC

0030 03E2R 24AA LIS R:t.0, X,. A·' FOR TEST IF I~UI·1ERIC 03E4R 24DD LIS R1.3, X ... [)·' c. R. CODE 03:E6R 26E1. NEXTC AIS R1.4, X'"1. ... IUCR PTR 03E8R 05E7 CLHR R1.4,R7 f1f•:E WE ,BE','OI·~[) ENC• OF BUFFEF. 03EAR 4380 BFC X ... 8 ... ,ERR2 BR IF YES

041.2R 03EER D3CE LB R1.2,0(R1.4) PICK UP BYTE

~3(1~:::1(1

03F2R 05CD CLHR R1.2,R1.3 EC"~UAL TO C. R. ~33F4R 2339 BFFS X ... 3 ... , 9 BR IF 'T'ES 03F6R 05CA CLHR · R1.2,R1.0 LESS THAH ~0 ? 03F8R 2382 BFFS x ... a ... , 2 BR IF NOT 03FAR 0AC9 AHR R1.2,R9 NUI·1ERIC TO ASCII ~33FCR 2681. AIS R1.1.,X"1. ... INCR OBUFF PTR 03FER D2CB STB R1.2, 0 ( Fi:1.1.) STORE CHAR.

~3000

~3402R 430(1 BFC x···e·', NEXTC NE>~T CHAF.:ACTEF.: 03E6F.:

(1406R 4EmF STH R1.L 4 ( R1.5) STOF.:E LAST B','TE fiDDRESS ~3(104

040AR D1.70 Lt1 R7,XLHDRS 0438Fi:

040ER 430F BFC X"0",6(R1.5) RETURN ~3(1(16

* 041.2R E1.1.0 ERR2 svc 1. .. PBLKB PRINT ERROR 1·1ESSAGE ~341.AR

041.6R E1.30 svc 3 .. e (1(1(10

* €141AR 28~30 PBLKB DC X..-28(10 ... EF.:ROR l•1ESS. PARI1. BLOCK 041CR (1(1~3(1 DC X..-0~300"

~341ER 0422R DC A(ERI•18) 0420R 0436R DC A ( ERt·1B+20) 0422R 494E ERI'1B DC C"INPUT BUFFER O'v'ERFL .OW ...

5(155 542~3

4255 4646 4552 204F 5645 5246 4C4F 5720

* 0438R r~LHDRS DS 1.8 SAVE AREA

* (144AR END

37

PAGE :1. :+: ~:DP0~32

* * c. [:oOEKES :1978

* * PROGRAI·1 TO DUI1P PROFILE DATA TAPE CREATED B'T' RDP0~3:1

* * CONSOLE = LU 0

* t·1AG TAPE = LU :1

* PRINTER = LU 7

* 000E R:14 EQU :1.4 0~30D R:13 EQU :1.3

* 0~3€10R 24DD START LIS R:1.3~ X""' D,. C. R. 0~302R 230E BFFS X"0,.~:1.4

(U304R E1:1.0 NEXTF svc :1.~PBLK4 t·1ESS TO OPE~:ATOF~

00C6R 00€18R E:1.:10 svc :1.~PBLK5 READ RESPONSE

0~3E0R 000CR D3E€1 LB R:1.4~ INBUF

t10F6R tn31~~1~: C5E0 CLHI R:14~ X··· €1059 ···

0059 00:14~: ?-::·..,·c::"

--'~·-· BFFS ~<"3 ... ~ 5 BR IF RESPONSE ~o.IAS II 'T' II 00:1.6R E:1:10 svc :1.~PBLK6 RE~o.IIND TAPE

00E8R €n3:1.AR E:1.30 svc :s~ 0

0000

* €n3:1.ER E1:1.0 svc :1~PBLK7 FORt1 FEED 00ECR

~~n322R E:1.:1.0 svc :1~PBLK0 READ HEADER RECORD 0~38AR

0026R 48E0 LH R:1.4~PBLK0+2 0~38CR

€102AR 42:1.~3 BTC X":1'·~ ERCHK BR IF TAPE EF~ROR

(n36ER 002ER D2D0 STB R:1.3~ INBUF+78

0:144R 0032R C8E0 LHI R:14~ INBUF+78

(11.44R ~3~336R 4~~1E0 5TH R1.4~PBLK1+6 SET EOL ADI)R

(1098R (103AR E:1:10 svc 1.~PBLK:1. PRINT LINE

0092R 003ER 48E0 LH R1.4~PBLK1.+2

0fJ94R 0042R 421.0 BTC X"1."~EREX2 BR IF PRINT ERROR

0082R 0046R E:110 NEXTR svc 1.~PBLK0 READ DATA RECORD

008AR 004AR 48E0 LH R1.4~PBLK0+2

008CR 0l34ER 4210 BTC X"'i."~ERCHK BR IF READ ERROR

006ER 0052R D2D0 STB R1.3~ INBUF+32

38

PAGE .-., .:..

0:1:16R ~3056R C8E(1 LHI F.::14, I NE:UF + 32

0:1:16R 005AR 4~3E~~ STH R:14,PBLK:1+6 SET EOL ADDR

0098R 005EF~ E:1:10 svc :1,PBLK1 PRINT LINE

a~:::192R

~:::n362R 48E(1 LH R:14,PBLK:1+2 e~~94R

~~06t·R 42:10 BTC >~ .. · :1 "' I EREX2 BR IF PRINTER ERROR 0082R

~3~36AR 430~~ E:FC x-·a···, NEXTR NEXT RECORD (1(146F~

006ER 9:1E3 ERCHK SLLS R:14,3 t·1AO TAPE ERROR CHECKING (1070R 42:1~~ BTC ~-~"' :t··· I EREX:1 BR IF EOt'1

~307AR

0074R 9:1E:1 SLLS R:14,:1 0076R 42:10 BTC X"':1."',NEXTF BR IF EOF

0(104R

* ~:::n~7AR E:1:10 EREX:1 svc :1,PBLK2 t'1AG TAPE ERR 11ESS

~309AR (n37EF~ E:130 s• ... •c: 3. 0

0(1(10 0082R E:1:10 EF~EX2 svc: :1,PE:LK3 PRINTER ERROR t'1ESS

~3080R

0086R E:130 svc 3. 0 0000

* 0~38AR 480:1 PBLK0 DC X"'480:1"' t•1AG TAPE READ BLK ~308CR 0000 DC X"'0000"' 008ER 00F6R DC A<INBUF) 0090R 0:179R DC A<INBUF+:13:1) 0092R 2807 PBLK:1 DC X·'2807~ PRINT LINE BLOCK 0094R 0000 DC X ... 0(H30 ... (n396R ~3~:::1F6R DC fi( INBUF) ~:::1098R 0:179R DC A<INBUF+:13:1) 0~39AR 2800 PBLK2 DC X"'2800"' t·1AG TAPE ERROR 1•1ES5 BLK 009CR 0(100 DC X''(U300"' ~:::1(19ER 00A2R DC A<ERI'12) ~3(1A0R 0~3AFR DC A<ERI'12+:13) 0~3A2R 4D4:1 ERI•12 DC c··'I1AG TAPE ERROR"

4720 544:1. 5~345

2045 5252 4F52

~30B0R 2800 PBLK3 DC X"2800"' PRINTER ERROR t1ESS BLK 0~382R 0000 DC X"'0(100"' ~3084R 0088R DC A<ERt'13) 00B6R 00C4R DC A<ERI'13+12) 00B8R 5052 ERt'13 DC C"PRINTER ERROR"

494E 5445 5220

39

PAGE 3: 4552 524F 5220

0€1C6R 2800 PBLK4 [)C x···2s0~:::1··· t1ESS TO OPERfiTOR BU( 00C8R 0000 DC X''0000 ... 00CAR '.K1CER DC A<fo1E554) 00CCR 00DFR DC A< l•1ESS4+:l7) 00CER 434F t·1E554 DC C ... CONTINUE ? y OR N ...

4E54 494E 5545 2~33F

2~320

5920 4F52 204E

€1€1E0R 4800 PBLI<5 DC X..-48~30 ... READ CONSOLE BLK 00E2R 0000 DC x-·00~3£1 ... 0€1E4R 0£1FGR DC A<INBUF) 00E6R 0:l46R DC A<INBUF+80) ~30E8R c0~3:1 F'BLK6 DC ;x; ··· C€10:1 ··· RE~o.IIHD 1·1AG TAPE BLI< 0£1EAR (1(1(10 DC :=< ... €1(1(1(1 ,. (10ECR 2807 F'BLK7 DC ;-~ .. · 2::::a.::17 .. · FO~:I•1 FEED BLI< (n3EER 0(U)0 DC >~ ... 0000 ... 0(1F0R 0€1F4R DC A<F'BUFF) ~30F2R 00F5R DC A<PBUFF+1.) 00F4R 0C0D PBUFF DC X ... 0C0D ...

* 00F6R INBUF DS 1.32

* 01.7AR END

40

APPENDIX E: USE OF THE HP-98036A INTERFACE

41

GENERAL INFORMATION CONCERNING USE OF THE HP-98036A INTERFACE

1) Instructions:

The following is a summary of the HPL instructions which

perform I/O via the HP-98036A Serial Interface (ref. Hewlett-Packard).

Refer to Figure 3 for diagrams of the registers mentioned below. In the

following instructions "sc" refers to select code that the interface has

been given and "x" is the value that the appropriate register within

that interface is set to.

wtc sc,x

wtb sc,x

rdb sc,x

rds sc,x

wti o,sc

wti r,x

rdi(r) -+ A

2) Mode Word:

- writes x to the RSOUT register;

- writes x to the R4D Control Word if bit 0 of

RSOUT is equal to 1;

writes x to the R4C Mode Word if bit 6 of R4D is

equal to 1;

- writes x to the R4A Data Register if bit 0 of

RSOUT is equal to 0;

- reads R4E Status Word if bit 0 of RSOUT is equal

to 1 and stores the value in x;

reads R4B Data Input if bit 0 of RSOUT is equal

to 0 and stores the value in x;

- reads the RSIN register and stores the value in x;

- sets select code for wti and rdi instructions;

- sets register RrOUT to x (Note that r is the number

of the register to be changed);

- reads the contents of register RriN and stores the

value in A.

To communicate with the Interdata Model 70, the following

- conditions in the transmit mode word must be set:

- one stop bit is selected

- odd parit.y

- parity enable

- 8 bit characters

- 1/16 x bit rate clock

42

To achieve this, bits 0,1,2,3,4 and 6 of the R4C Mode Word register

must be set to 1 and the others must be 0. This is done by setting

the R4C register to OlOlllllz or 951o·

The R4C Mode Word can be changed in the following 2 ways:

1) By physically changing the Mode Word register in the interface.

Since this will result in a different power up default value, using

software to change the mode word is preferable.

2) By using software to change the Mode Word as follows:

i) set bit 0 of RSOUT to enable writing to the R4D

USART Control Word;

ii) set bit 6 of the R4D USART Control to permit

modification of the R4C Mode Word;

iii) set the R4C Mode Word to a new value (Note that

x is the new value, in decimal, of the Mode

Word).

wtc sc,l

wtb sc,64

wtb sc,x

Again, the "sc" refers to the select code of the interface.

To find the decimal value to be written to a register, perform these

steps:

1) determine which bits are to be set to 1 and which will be

set to 0;

2) the values of these bits determine a unique binary number with

bit 0 being the least significant bit and bit 7 the most signif-

icant; and

3) convert the binary number which was determined in step 2 to its

decimal equivalent. This decimal number can be written to the

appropriate register to set the bits which were decided on in

step 1).

For example, suppose it is determined that bits 0, 1, 3, and 6 are to be

set to 1 in a certain register. The binary number 01001011 represents

the register contents if these bits are set. Since 010010llz = 2 6 +2 3+2 1+2° = 75, a 75 should be written to the appropriate register to

set the bits.

43

3) Bit Rate:

The bit rate can be altered by setting a switch on the

interface to the appropriate position. The bit rate must match the bit

rate of the data communications device connected to the interface. Below

is a list of bit rates and corresponding switch positions.

SWITCH POSITION BIT RATE

1 9600

2 4800

3 2400

4 1800

5 1200

6 600

7 300

8 150

9 110

0 75

If the bit rate is greater than or equal to 4800, the 1/16

bit rate factor must be used (bits 1 and 0 of the R4C Mode Word are set

to 1 and 0, respectively). Otherwise the 1/64 bit rate factor must be

used (bits 1 and 0 of the R4C Mode Word are both set to 1).

44

R5 Registers AS OUT F~egister

BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

Interrupt Interrupt R4 Control

Interface Programmed Control2 Control! 0 • Data IN/ Interrupt Interface Receiver· Transmitted OUT Enable Reset Control Control 1 • Control/

Status

AS IN Register BIT 8 BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BITt

Interface Control Control Peripheral Interrupt f1 Interface Interface

f1 ~ Status 2 Status 1

Status 1 I.D.t I.D.1 Receiver Transmitter Enable Status Mode Mode

R4 Registers

R4C Mode Word BIT 7 I BIT 6 BIT 5 BIT 4 BIT 3 I BIT 2 BIT 1 1 BITO

Number of Stop Bits Characler Length Bit Rate Fictor 00 • not valid Parity Type Parity Enable 00 • 5bits 00 a not used 01- 1 bit 0 • Odd 0 • Disable 01 • 6bits 01 • 1 X bit rate clock 10- 1.5 bits 1 • Even 1 • Enable 10•7bits 10 • 1/16 X bit rate clock 11-2 bits 11 • 8 bits 11 = 1/64 X bit rate clock

R4D USART Control Word BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

Clear To Send Data Set Ready

USART Pin 5 (Standard) Reset Status Pin 6 (Standard)

Always 0 Bits of USAAT Send Break Enable Data Data Terminal Enable Data Reset Request To

Status Word Character Receiver Ready Pin 20 Transmitter Send Pin 4

(Option 001) (Option 001)

R4E USART Status Word BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BITO

Request To Send Pin 4 (Standard)

Framing Overrun Parity Transmitter Receiver Transmitter Data Set Ready AlwaysO Pin 6 Error Error Error Empty Ready Ready

(Option 001)

Figure 3: HP-98036A Interface Registers

45