261 lines
8.6 KiB
Plaintext
261 lines
8.6 KiB
Plaintext
# Copyright: Public domain.
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# Filename: TVCSTROKETEST.agc
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# Purpose: Part of the source code for Colossus 2A, AKA Comanche 055.
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# It is part of the source code for the Command Module's (CM)
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# Apollo Guidance Computer (AGC), for Apollo 11.
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# Assembler: yaYUL
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# Contact: Ron Burkey <info@sandroid.org>.
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# Website: www.ibiblio.org/apollo.
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# Pages: 979-983
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# Mod history: 2009-05-13 RSB Adapted from the Colossus249/ file of the
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# same name, using Comanche055 page images.
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#
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# This source code has been transcribed or otherwise adapted from digitized
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# images of a hardcopy from the MIT Museum. The digitization was performed
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# by Paul Fjeld, and arranged for by Deborah Douglas of the Museum. Many
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# thanks to both. The images (with suitable reduction in storage size and
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# consequent reduction in image quality as well) are available online at
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# www.ibiblio.org/apollo. If for some reason you find that the images are
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# illegible, contact me at info@sandroid.org about getting access to the
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# (much) higher-quality images which Paul actually created.
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#
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# Notations on the hardcopy document read, in part:
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#
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# Assemble revision 055 of AGC program Comanche by NASA
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# 2021113-051. 10:28 APR. 1, 1969
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#
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# This AGC program shall also be referred to as
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# Colossus 2A
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# Page 979
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# NAME STROKE TEST PACKAGE (INCLUDING INITIALIZATION PACKAGE)
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# LOG SECTION...TVCSTROKETEST SUBROUTINE...DAPCSM
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# MODIFIED BY SCHLUNDT 21 OCTOBER 1968
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#
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# FUNCTIONAL DESCRIPTION....
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# STROKE TEST PACKAGE GENERATES A WAVEFORM DESIGNED TO EXCITE BENDING
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# STRKTSTI (STROKE TEST INITIALIZATION) IS CALLED AS A JOB BY VB68.
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# IT INITIALIZES ALL ERASABLES REQD FOR A STROKE TEST, AND
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# THEN TESTS FOR CSM/LM (BIT 13 OF DAPDATR1). IF CSM/LM,
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# IN EITHER HIGH OR LOW-BANDWIDTH MODE, THE TEST IS STARTED
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# IMMEDIATELY. IF NOT CSM/LM, PROGRAM EXITS WITH NO ACTION.
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# HACK (STROKE TEST) GENERATES THE WAVEFORM BY DUMPING PULSE BURSTS
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# OF PROPER SIGN AND IN PROPER SEQUENCE DIRECTLY INTO
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# TVCPITCH, WORKING IN CONJUNCTION WITH BOTH PITCH AND YAW
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# TVC DAPS, WITH INTERMEDIATE WAITLIST CALLS. NOTE, HOWEVER
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# THAT THE STROKE TEST IS PERFORMED ONLY IN THE PITCH AXIS.
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# AN EXAMPLE WAVEFORM IS GIVEN BELOW, TO DEMONSTRATE STROKE-
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# TEST PARAMETER SELECTION.
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# RESTARTS CAUSE TEST TO BE TERMINATED. ANOTHER V68 REQD IF TEST
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# IS TO BE RE-RUN.
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# PULSE BURST SIZE IS PAD-LOADED (ESTROKER) SO THAT AMPLITUDE OF
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# WAVEFORM CAN BE CHANGED. THERE ARE TEN PULSE BURSTS IN
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# THE HALF-AMPLITUDE OF THE FIRST FREQUENCY SET IN THE
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# STANDARD WAVEFORM. AMPLITUDE IS 10(ESTROKER)(1/42.15),
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# NOMINALLY 50/42.15 = 1.185 DEG
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#
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# CALLING SEQUENCE....
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# EXTENDED VERB 68 SETS UP STRKTSTI JOB
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# PITCH AND YAW TVCDAPS, FINDING STROKER NON-ZERO, DO A ..TC HACK..
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# AN INTERNALLY-GENERATED WAITLIST CALL ENTERS AT ..HACKWLST..
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#
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# NORMAL EXIT MODES....
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# TC BUNKER (..Q.. IF ENTRY FROM DAP, ..TCTSKOVR.. IF FROM WAITLIST) LIST
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#
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# SUBROUTINES CALLED....
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# WAITLIST
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#
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# ALARM OR ABORT EXIT MODES....
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# NONE
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#
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# ERASABLE INITIALIZATION REQUIRED....
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# ESTROKER (PAD-LOAD)
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# STROKER, CADDY, REVS, CARD, N
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#
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# OUTPUT....
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# STRKTSTI...INITIALIZATION FOR STROKE TEST
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# HACK, HACKWLST...PULSE BURSTS INTO TVCPITCH VIA..ADS..
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# RESETS STROKER = +0 WHEN TEST COMPLETED
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#
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# DEBRIS....
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# N = CADDY = +0, CARD = -0, REVS = -1
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# BUNKER
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# Page 980
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#
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# EXAMPLE STROKE TEST WAVE FORM, DEMONSTRATING PARAMETER SELECTION
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# NOTE....THIS IS NOT THE OFFICIAL WAVEFORM....
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#
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# ** **
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# ** **
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# ** ** EXAMPLE WAVEFORM (EACH * REPRESENTS
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# * * * * (85.41 ARCSEC OF ACTUATOR CMND)
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# * * * *
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# * * * *
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# * * * * ** ** ** ** **
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# * * * * ** ** ** ** **
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# * * * * ** ** ** ** **
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# * * * * * * * * * * * * * * ** ** ** ** **
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# * * * * * * * * * * * * * * ** ** ** ** **
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# * * * * * * * * * * * * * * ** ** ** ** **
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# ----------------------------------------------------------------------------------------------------
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# * * * * * * * * * * * * * * ** ** ** ** **
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# * * * * * * * * * * * * * * ** ** ** ** **
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# * * * * * * * * * * * * * * ** ** ** ** **
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# * * * * ** ** ** ** **
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# * * * * ** ** ** ** **
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# * * * * ** ** ** ** **
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# * * * *
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# * * * *
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# * * * *
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# ** **
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# ** **
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# ** **
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#
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# FOR THIS (UNOFFICIAL, EXAMPLE) WAVEFORM, THE REQUIRED PARAMETERS ARE AS FOLLOWS....
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#
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# FCARD = +3 (NUMBER OF SETS)
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# ESTROKER = +3 (PULSE BURST SIZE, SC.AT 85.41 ARCSEC/BIT)
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#
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# SET1:
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# FREVS = +3 (NUMBER REVERSALS MINUS 1)
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# FCADDY = +4 (NUMBER OF PULSE BURSTS IN 1/2 AMPLITUDE)
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# SET2:
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# FCARD1 = +9 (NUMBER REVERSALS MINUS 1)
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# FCARD4 = +2 (NUMBER OF PULSE BURSTS IN 1/2 AMPLITUDE)
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# SET3:
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# FCARD2 = +9 (NUMBER REVERSALS MINUS 1)
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# FCARD5 = +1 (NUMBER OF PULSE BURSTS IN 1/2 AMPLITUDE)
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# SET4:
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# FCARD3 = +0 (NUMBER OF REVERSALS MINUS 1)
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# FCARD6 = +0 (NUMBER OF PULSE BURSTS IN 1/2 AMPLUTUDE)
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# Page 981
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# STROKE TEST INITIALIZATION PACKAGE (AS A JOB, FROM VERB 68)
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BANK 17
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SETLOC DAPS2
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BANK
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COUNT* $$/STRK
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EBANK= CADDY
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STRKTSTI TCR TSTINIT # STROKE TEST INITIALIZATION PKG (CALLED
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# AS A JOB BY VERB68)
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STRKCHK INHINT
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CAE DAPDATR1 # CHECK FOR CSM/LM CONFIGURATION
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MASK BIT14
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EXTEND
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BZF +3
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CAE ESTROKER # BEGIN ON NEXT DAP PASS (PITCH OR YAW)
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TS STROKER # (STROKING DONE IN PITCH ONLY, HOWEVER)
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TCF ENDOFJOB
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TSTINIT CS FCADDY # NORMAL ENTRY FROM STRKTSTI
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TS CADDY
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TS N # NOTE SGN CHNG FCADDY(+) TO CADDY(-)
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CAF FREVS
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TS REVS
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CS FCARD # NOTE SGN CHNG FCARD(+) TO CARD(-)
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TS CARD
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TC Q # RETURN TO STRKTSTI+1 (OR CHKSTRK+2OR+4)
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# Page 982
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# THE OFFICIAL STROKE TEST WAVEFORM (3 JAN, 1967) CONSISTS OF FOUR STROKE SETS, AS FOLLOWS....
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#
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# SET 1...10 BURSTS IN 1/2 AMP, 4 REVERSALS
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# SET 2... 6 BURSTS IN 1/2 AMP, 6 REVERSALS
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# SET 3... 5 BURSTS IN 1/2 AMP, 10 REVERSALS
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# SET 4... 4 BURSTS IN 1/2 AMP, 14 REVERSALS
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#
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# THE PULSE BURST SIZE (ESTROKER) IS PAD-LOADED (5 BITS AS OF 3JAN,1967)
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# THE REMAINING WAVEFORM-GENERATING PARAMETERS ARE AS FOLLOWS....
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FCADDY DEC 10 # NO. PULSE BURSTS IN 1/2 AMP, SET1..(+10)
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FREVS DEC 3 # NO. REVERSALS MINUS 1, SET1........( 3)
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FCARD DEC 4 # NO. STROKE SETS....................(+ 4)
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FCARD1 DEC 5 # NO. REVERSALS MINUS 1, SET2........( 5)
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FCARD2 DEC 9 # 3........( 9)
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FCARD3 DEC 13 # 4........( 13)
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FCARD4 DEC 6 # NO. PULSE BURSTS IN 1/2 AMP, SET2..(+ 6)
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FCARD5 DEC 5 # SET3..(+ 5)
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FCARD6 DEC 4 # SET4..(+ 4)
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20MS = BIT2
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# STROKE TEST PACKAGE PROPER....
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EBANK= BUNKER
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HACK EXTEND # ENTRY (IN T5 RUPT) FROM TVCDAPS
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QXCH BUNKER # SAVE Q FOR DAP RETURN
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CAF 20MS # 2DAPSX2(PASSES/DAP)X2(CS/PASS)=8CS=TVCDT
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TC WAITLIST
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EBANK= BUNKER
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2CADR HACKWLST
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TCF +3
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HACKWLST CAF TCTSKOVR # ENTRY FROM WAITLIST
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TS BUNKER # BUNKER IS TC TASKOVER
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CA STROKER # STROKE
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ADS TVCPITCH
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CAF BIT11 # RELEASE THE ERROR COUNTERS
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EXTEND
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WOR CHAN14
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INCR CADDY # COUNT DOWN THE NO. BURSTS, THIS SLOPE
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# Page 983
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CS CADDY
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EXTEND
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BZMF +2
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TC BUNKER # EXIT, WHILE ON A SLOPE
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CCS REVS
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TCF REVUP # POSITIVE REVS
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TCF REVUP +4 # FINAL REVERSAL, THIS SET
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INCR CARD # NEGATIVE REVS SET LAST PASS, READY FOR
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CS CARD # THE NEXT SET. CHECK IF NO MORE SETS
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EXTEND
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BZF STROKILL # ALL SETS COMPLETED
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INDEX CARD
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CAF FCARD +4 # PICK UP NO. REVERSALS (-), NEXT SET
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TS REVS # REINITIALIZE
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INDEX CARD
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CS FCARD +7 # PICK UP NO. BURSTS IN 1/2AMP, NEXT SET
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TS N # REINITIALIZE
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TS CADDY
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TC BUNKER # EXIT, AT END OF SET
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STROKILL TS STROKER # RESET (TO +0) TO END TEST
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TC BUNKER # EXIT, STROKE TEST FINIS
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REVUP TS REVS # ALL REVERSALS EXCEPT LAST OF SET
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CA N
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DOUBLE # 2 x 1/2AMP
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TCF +4
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+4 CS ONE # FINAL REVERSAL, THIS SET
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TS REVS # PREPARE TO BRANCH TO NEW BURST
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CA N # JUST RETURN TO ZERO, FINAL SLOPE OF SET
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TS CADDY # CADUP
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CS STROKER # CHANGE SIGN OF SLOPE
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TS STROKER
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TC BUNKER # EXIT AT A REVERSAL (SLOPE CHANGE)
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