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klad.sources/dskac.txt
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;DSKAC
IDENTIFICATION
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PRODUCT CODE: AH-E301A-DD
DIAGNOSTIC CODE: DSKAC
PRODUCT NAME: DSKACA0 DECSYSTEM 2020 BASIC
INSTRUCTION DIAGNOSTIC (3)
VERSION: 0.1
DATE RELEASED: MARCH 1978
MAINTAINED BY: DIAGNOSTIC ENGINEERING
AUTHOR: JOHN R. KIRCHOFF
COPYRIGHT (C) 1978
DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
THIS SOFTWARE IS FURNISHED UNDER A LICENSE FOR USE ONLY ON A
SINGLE COMPUTER SYSTEM AND MAY BE COPIED ONLY WITH THE INCLUSION
OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE, OR ANY OTHER
COPIES THEREOF, MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE
TO ANY OTHER PERSON EXCEPT FOR USE ON SUCH SYSTEM AND TO ONE WHO
AGREES TO THESE LICENSE TERMS. TITLE TO AND OWNERSHIP OF THE
SOFTWARE SHALL AT ALL TIMES REMAIN IN DIGITAL EQUIPMENT
CORPORATION.
THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT
NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL
EQUIPMENT CORPORATION.
DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY FOR THE
USE OR RELIABILITY OF ITS SOFTWARE IN EQUIPMENT WHICH IS NOT
SUPPLIED BY DIGITAL EQUIPMENT CORPORATION.
MAINDEC-10-DSKAC.TXT
PAGE 2
TABLE OF CONTENTS
-----------------
1.0 ABSTRACT
2.0 REQUIREMENTS
2.1 EQUIPMENT
2.2 STORAGE
2.3 PRELIMINARY PROGRAMS
3.0 PROGRAM PROCEDURES
3.1 LOADING PROCEDURE
3.2 STARTING PROCEDURE
3.3 OPERATING PROCEDURE
4.0 ERRORS
5.0 ITERATION COUNTER
6.0 CYCLE TIME
7.0 OPERATIONAL VARIATIONS
8.0 MISCELLANEOUS
9.0 LISTING
MAINDEC-10-DSKAC.TXT
PAGE 3
1.0 ABSTRACT
THIS DECSYSTEM 2020 KS-10 BASIC INSTRUCTION DIAGNOSTIC IS
THE THIRD IN A SERIES OF DECSYSTEM 2020 KS-10 PROCESSOR
DIAGNOSTICS. THE DIAGNOSTIC TESTS SOME OF THE FOLLOWING
INSTRUCTIONS. LOGICAL TEST, HALF WORD AND THE ADDER.
THE DIAGNOSTIC TESTS THE BASIC FUNCTIONALITY OF THE PROCESSOR
AND MICRO-CODE.
2.0 REQUIREMENTS
2.1 EQUIPMENT
A PDP-10 SM10 WITH A MINIMUM OF 32K OF MEMORY
CONSOLE PROCESSOR
CONSOLE TELETYPE
2.2 STORAGE
THE PROGRAM RUNS WITHIN 32K OF MEMORY.
2.3 PRELIMINARY PROGRAMS
CONSOLE FUNCTIONS WORKING PROPERLY
PREVIOUS PROCESSOR DIAGNOSTICS
MAINDEC-10-DSKAC.TXT
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3.0 PROGRAM PROCEDURES
3.1 LOADING PROCEDURE
LOAD VIA CONSOLE PROCESSOR
3.2 STARTING PROCEDURE
STAND-ALONE STARTING ADDRESS IS 30000.
IF THE DIAGNOSTIC FAILS TO START CORRECTLY TRY STARTING AT THE
FIRST TEST INSTEAD OF AT THE BEGINNING OF THE CONTROL SEQUENCE.
(SEE LISTING).
3.3 OPERATING PROCEDURE
ONCE STARTED THE PROGRAM WILL CYCLE CONTINUALLY UNTIL STOPPED
OR AN ERROR OCCURS.
4.0 ERRORS
ERRORS ARE IN THE FORM OF HALT INSTRUCTIONS. THE LISTING
SHOULD BE CONSULTED TO DETERMINE THE CAUSE OF THE ERROR. A
NO OPERATION (JUMP) INSTRUCTION FOLLOWS EACH HALT. THIS
MAY BE USEFUL IN CONSTRUCTING A SCOPE LOOP TO CYCLE ON THE
FAILING INSTRUCTION.
5.0 ITERATION COUNTER
THE ITERATION COUNT OF THE PROGRAM CAN BE DETERMINED BY
EXAMINING 30047 "PASCNT".
6.0 CYCLE TIME
THE CYCLE TIME OF THE PROGRAM IS IN THE MILLISECOND RANGE AND
IS THEREFORE SUITABLE FOR TAKING MARGINS, VIBRATION TESTS, ETC.
MAINDEC-10-DSKAC.TXT
PAGE 5
7.0 OPERATIONAL VARIATIONS
A. DIAGNOSTIC MONITOR
THE PROGRAM IS USABLE WITH THE DIAGNOSTIC MONITOR TO PRO-
VIDE RELIABILITY TESTS, ACCEPTANCE TESTS, AND/OR TO PRO-
VIDE A QUICK METHOD OF ISOLATION OF A FAULT TO A PARTICULAR
AREA OF THE PROCESSOR. CERTAIN PROCEDURES ARE USED WHEN
THE PROGRAM IS USED IN THIS MANNER. THEY ARE:
1. THE DIAGNOSTIC MONITOR TRANSFERS CONTROL TO THE PRO-
GRAM AND STARTS IT AT LOCATION 30002.
2. MONCTL - LOCATION 30043 IS USED AS THE DIAGNOSTIC MON-
ITOR CONTROL FLAG WORD.
B. USER MODE
THE PROGRAM WILL OPERATE IN USER MODE AND AS SUCH PROVIDES
ASSURANCE THAT THE PROCESSOR IS PERFORMING ALL FUNCTIONS
CORRECTLY. USER MODE STARTING ADDRESS IS 30000.
C. SYSTEM EXERCISER
STARTING ADDRESS IS 30003. NO DATA SWITCHES ARE USED BY
THIS PROGRAM.
8.0 MISCELLANEOUS
NONE
9.0 LISTING