Source Code
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These source-code files are part of a reconstructed copy of Luminary 98, a
development version of the Apollo 11 Lunar Module (LM) Apollo Guidance Computer
(AGC) software.
The reconstruction began with source code of Luminary 99 revision 1 previously
transcribed from a digitized copy of that program. The code was then updated
by undoing changes described in original Luminary memo 85, using asterisks
indicating changed lines in the listing as a guide. While no listing of this
version is known to exist, nor are the memory-bank checksums available,
the reconstruction is believed to be correct because it was an an intermediate
step in reconstructing Luminary 97 whose reconstruction was
verified by matching memory-bank checksums to those listed in drawing 2021152G.
Note that page numbers in the reconstructed code match those on the Luminary 099
revision 001 printout, although the added code would likely have changed page
numbers for a real Luminary 98 listing.
Comments from the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". Report any errors
noted by creating an
issue report at the Virtual AGC
project's GitHub repository.
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055964,000002: ## Copyright: Public domain.
055965,000003: ## Filename: KEYRUPT,_UPRUPT.agc
055966,000004: ## Purpose: A section of Luminary revision 98.
055967,000005: ## It is part of the reconstructed source code for the a
055968,000006: ## development version of the flight software for the Lunar
055969,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
055970,000008: ## The code has been recreated from a copy of Luminary 99
055971,000009: ## revision 001, using asterisks indicating changed lines in
055972,000010: ## the listing and Luminary Memo #85, which lists changes between
055973,000011: ## Luminary 98 and 99.
055974,000012: ## Reference: pp. 1338-1340
055975,000013: ## Assembler: yaYUL
055976,000014: ## Contact: Ron Burkey <info@sandroid.org>.
055977,000015: ## Website: www.ibiblio.org/apollo/index.html
055978,000016: ## Mod history: 2019-07-28 MAS Created from Luminary 99.
055979,000017: ## 2021-05-30 ABS UPCK -> UPOK
055980,000018:
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Page 1338
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055982,000020: 14,3774 BANK 14
055983,000021: 04,2000 SETLOC KEYRUPT
055984,000022: 04,2000 BANK
055985,000023: 04,3274 COUNT* $$/KEYUP
055986,000024:
055987,000025: 04,3274 54016 KEYRUPT1 TS BANKRUPT
055988,000026: 04,3275 56002 XCH Q
055989,000027: 04,3276 54012 TS QRUPT
055990,000028: 04,3277 04400 TC LODSAMPT # TIME IS SNATCHED IN RUPT FOR NOUN 65.
055991,000029: 04,3300 34346 CAF LOW5
055992,000030: 04,3301 00006 EXTEND
055993,000031: 04,3302 02015 RAND MNKEYIN # CHECK IF KEYS 5M-1M ON
055994,000032: 04,3303 54073 KEYCOM TS RUPTREG4
055995,000033: 04,3304 40101 CS FLAGWRD5
055996,000034: 04,3305 74735 MASK DSKYFBIT
055997,000035: 04,3306 26101 ADS FLAGWRD5
055998,000036:
055999,000037: 04,3307 34355 ACCEPTUP CAF CHRPRIO # (NOTE: RUPTREG4 = KEYTEMP1)
056000,000038: 04,3310 05072 TC NOVAC
056001,000039: 04,3311 0777 EBANK= DSPCOUNT
056002,000040: 04,3311 02077 60101 2CADR CHARIN
056003,000041:
056004,000042: 04,3313 30073 CA RUPTREG4
056005,000043: 04,3314 50064 INDEX LOCCTR
056006,000044: 04,3315 54154 TS MPAC # LEAVE 5 BIT KEY CDE IN MPAC FOR CHARIN
056007,000045: 04,3316 05270 TC RESUME
056008,000046:
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Page 1339
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056010,000048: # UPRUPT PROGRAM
056011,000049:
056012,000050: 04,3317 54016 UPRUPT TS BANKRUPT
056013,000051: 04,3320 56002 XCH Q
056014,000052: 04,3321 54012 TS QRUPT
056015,000053: 04,3322 04400 TC LODSAMPT # TIME IS SNATCHED IN RUPT FOR NOUN 65.
056016,000054: 04,3323 34755 CAF ZERO
056017,000055: 04,3324 56045 XCH INLINK
056018,000056: 04,3325 54073 TS KEYTEMP1
056019,000057: 04,3326 34751 CAF BIT3 # TURN ON UPACT LIGHT
056020,000058: 04,3327 00006 EXTEND # (BIT 3 OF CHANNEL 11)
056021,000059: 04,3330 05011 WOR DSALMOUT
056022,000060: 04,3331 34346 UPRPT1 CAF LOW5 # TEST FOR TRIPLE CHAR REDUNDANCY
056023,000061: 04,3332 70073 MASK KEYTEMP1 # LOW5 OF WORD
056024,000062: 04,3333 56073 XCH KEYTEMP1 # LOW5 INTO KEYTEMP1
056025,000063: 04,3334 00006 EXTEND
056026,000064: 04,3335 74742 MP BIT10 # SHIFT RIGHT 5
056027,000065: 04,3336 54734 TS KEYTEMP2
056028,000066: 04,3337 74346 MASK LOW5 # MID 5
056029,000067: 04,3340 63374 AD HI10
056030,000068: 04,3341 03371 TC UPTEST
056031,000069: 04,3342 34742 CAF BIT10
056032,000070: 04,3343 00006 EXTEND
056033,000071: 04,3344 70734 MP KEYTEMP2 # SHIFT RIGHT 5
056034,000072: 04,3345 74346 MASK LOW5 # HIGH 5
056035,000073: 04,3346 40000 COM
056036,000074: 04,3347 03371 TC UPTEST
056037,000075:
056038,000076: 04,3350 43377 UPOK CS ELRCODE # CODE IS GOOD. IF CODE = 'ERROR RESET',
056039,000077: 04,3351 60073 AD KEYTEMP1 # CLEAR UPLOCKFL (SET BIT4 OF FLAGWRD7 = 0)
056040,000078: 04,3352 00006 EXTEND # IF CODE DOES NOT = 'ERROR RESET', ACCEPT
056041,000079: 04,3353 13361 BZF CLUPLOCK # CODE ONLY IF UPLOCKFL IS CLEAR (=0).
056042,000080:
056043,000081: 04,3354 34750 CAF UPLOCBIT # TEST UPLOCKFL FOR 0 OR 1
056044,000082: 04,3355 70103 MASK FLAGWRD7
056045,000083: 04,3356 10000 CCS A
056046,000084: 04,3357 05270 TC RESUME # UPLOCKFL = 1
056047,000085: 04,3360 03307 TC ACCEPTUP # UPLOCKFL = 0
056048,000086:
056049,000087: 04,3361 44750 CLUPLOCK CS UPLOCBIT # CLEAR UPLOCKFL (I.E., SET BIT 4 OF )
056050,000088: 04,3362 70103 MASK FLAGWRD7 # FLAGWRD7 = 0)
056051,000089: 04,3363 54103 TS FLAGWRD7
056052,000090: 04,3364 03307 TC ACCEPTUP
056053,000091:
056054,000092: # CODE IS BAD
056055,000093: 04,3365 40103 TMFAIL2 CS FLAGWRD7 # LOCK OUT FURTHER UPLINK ACTIVITY
056056,000094: 04,3366 74750 MASK UPLOCBIT # (BY SETTING UPLOCKFL = 1) UNTIL
056057,000095: 04,3367 26103 ADS FLAGWRD7 # 'ERROR RESET' IS SENT VIA UPLINK.
056058,000096: 04,3370 05270 TC RESUME
056059,000097: 04,3371 60073 UPTEST AD KEYTEMP1
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Page 1340
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056061,000099: 04,3372 10000 CCS A
056062,000100: 04,3373 03365 TC TMFAIL2
056063,000101: 04,3374 77740 HI10 OCT 77740
056064,000102: 04,3375 03365 TC TMFAIL2
056065,000103: 04,3376 00002 TC Q
056066,000104:
056067,000105: 04,3377 00022 ELRCODE OCT 22
056068,000106:
056069,000107: # 'UPLINK ACTIVITY LIGHT' IS TURNED OFF BY .....
056070,000108: # 1. VBRELDSP
056071,000109: # 2. ERROR RESET
056072,000110: # 3. UPDATE PROGRAM (P27) ENTERED BY V70,V71,V72, AND V73.
056073,000111: # -
056074,000112: # THE RECEPTION OF A BAD CODE (I.E CCC FAILURE) LOCKS OUT FURTHER UPLINK ACTIVITY BY SETTING BIT4 OF FLAGWRD7 = 1.
056075,000113: # THIS INDICATION WILL BE TRANSFERRED TO THE GROUND BY THE DOWNLINK WHICH DOWNLINKS ALL FLAGWORDS.
056076,000114: # WHEN UPLINK ACTIVITY IS LOCKED OUT, IT CAN BE ALLOWED WHEN THE GROUND UPLINKS AND 'ERROR RESET' CODE.
056077,000115: # (IT IS RECOMMENDED THAT THE 'ERROR LIGHT RESET' CODE IS PRECEEDED BY 16 BITS THE FIRST OF WHICH IS 1 FOLLOWED
056078,000116: # BY 15 ZEROES. THIS WILL ELIMINATE EXTRANEOUS BITS FROM INLINK WHICH MAY HAVE BEEN LEFT OVER FROM THE ORIGINAL
056079,000117: # FAILURE)
056080,000118:
056081,000119: # UPLINK ACTIVITY IS ALSO ALLOWED (UNLOCKED) DURING FRESH START WHEN FRESH START SETS BIT4 OF FLAGWRD7 = 0.
056082,000120:
056083,000121: 04,3400 44753 CS XDSPBIT
056084,000122:
End of include-file KEYRUPT,_UPRUPT.agc. Parent file is MAIN.agc