Source Code
![]() |
These source-code files were from the printout at the MIT Museum, with many thanks
to Deborah Douglas, the Museum's Curator of Science and Technology, for releasing
it to us. The printout was digitally photographed by Paul Fjeld. A team of
volunteers transcribed the source code manually from these images or, where
appropriate, modified already-transcribed but similar source Colossus 249 (Apollo 9)
source code to agree with the images from the printout. Note that the page images
presented online are of reduced quality, and that higher-quality images
are available. Report any conversion errors or legibility
problems in page images to info@sandroid.org.
Notations on the program listing read, in part:GAP: ASSEMBLE REVISION 055 OF AGC PROGRAM COMANCHE BY NASA 2021113-051 10:28 APR. 1,1969Note that the date is the date of the printout, not the date of the program revision. |
062624,000002: ## Copyright: Public domain.
062625,000003: ## Filename: KEYRUPT_UPRUPT.agc
062626,000004: ## Purpose: Part of the source code for Comanche, build 055. It
062627,000005: ## is part of the source code for the Command Module's
062628,000006: ## (CM) Apollo Guidance Computer (AGC), Apollo 11.
062629,000007: ## Assembler: yaYUL
062630,000008: ## Reference: pp. 1449-1451
062631,000009: ## Contact: Ron Burkey <info@sandroid.org>
062632,000010: ## Website: http://www.ibiblio.org/apollo.
062633,000011: ## Mod history: 2009-05-07 RSB Adapted from Colossus249 file of the same
062634,000012: ## name, and page images. Corrected various
062635,000013: ## typos in the transcription of program
062636,000014: ## comments, and these should be back-ported
062637,000015: ## to Colossus249.
062638,000016: ##
062639,000017: ## The contents of the "Comanche055" files, in general, are transcribed
062640,000018: ## from scanned documents.
062641,000019: ##
062642,000020: ## Assemble revision 055 of AGC program Comanche by NASA
062643,000021: ## 2021113-051. April 1, 1969.
062644,000022: ##
062645,000023: ## This AGC program shall also be referred to as Colossus 2A
062646,000024: ##
062647,000025: ## Prepared by
062648,000026: ## Massachusetts Institute of Technology
062649,000027: ## 75 Cambridge Parkway
062650,000028: ## Cambridge, Massachusetts
062651,000029: ##
062652,000030: ## under NASA contract NAS 9-4065.
062653,000031: ##
062654,000032: ## Refer directly to the online document mentioned above for further
062655,000033: ## information. Please report any errors to info@sandroid.org.
062656,000034:
![]() |
Page 1449 |
062658,000036: 14,3761 BANK 14
062659,000037: 07,2000 SETLOC KEYRUPT
062660,000038: 07,2000 BANK
062661,000039: 07,3673 COUNT* $$/KEYUP
062662,000040:
062663,000041: 07,3673 54016 KEYRUPT1 TS BANKRUPT
062664,000042: 07,3674 56002 XCH Q
062665,000043: 07,3675 54012 TS QRUPT
062666,000044: 07,3676 04414 TC LODSAMPT # TIME IS SNATCHED IN RUPT FOR NOUN 65.
062667,000045: 07,3677 34362 CAF LOW5
062668,000046: 07,3700 00006 EXTEND
062669,000047: 07,3701 02015 RAND MNKEYIN # CHECK IF KEYS 5M-1M ON
062670,000048: 07,3702 54073 KEYCOM TS RUPTREG4
062671,000049: 07,3703 40101 CS FLAGWRD5
062672,000050: 07,3704 75001 MASK BIT15
062673,000051: 07,3705 26101 ADS FLAGWRD5
062674,000052:
062675,000053: 07,3706 34371 ACCEPTUP CAF CHRPRIO # (NOTE: RUPTREG4 = KEYTEMP1)
062676,000054: 07,3707 05134 TC NOVAC
062677,000055: 07,3710 0777 EBANK= DSPCOUNT
062678,000056: 07,3710 02000 60101 2CADR CHARIN
062679,000057:
062680,000058: 07,3712 30073 CA RUPTREG4
062681,000059: 07,3713 50064 INDEX LOCCTR
062682,000060: 07,3714 54154 TS MPAC # LEAVE 5 BIT KEY CODE IN MPAC FOR CHARIN
062683,000061: 07,3715 05333 TC RESUME
062684,000062:
![]() |
Page 1450 |
062686,000064: # UPRUPT PROGRAM
062687,000065:
062688,000066: 07,3716 54016 UPRUPT TS BANKRUPT
062689,000067: 07,3717 56002 XCH Q
062690,000068: 07,3720 54012 TS QRUPT
062691,000069: 07,3721 04414 TC LODSAMPT # TIME IS SNATCHED IN RUPT FOR NOUN 65.
062692,000070: 07,3722 35021 CAF ZERO
062693,000071: 07,3723 56045 XCH INLINK
062694,000072: 07,3724 54073 TS KEYTEMP1
062695,000073: 07,3725 35015 CAF BIT3 # TURN ON UPACT LIGHT
062696,000074: 07,3726 00006 EXTEND # (BIT 3 OF CHANNEL 11)
062697,000075: 07,3727 05011 WOR DSALMOUT
062698,000076: 07,3730 34362 UPRPT1 CAF LOW5 # TEST FOR TRIPLE CHAR REDUNDANCY
062699,000077: 07,3731 70073 MASK KEYTEMP1 # LOW5 OF WORD
062700,000078: 07,3732 56073 XCH KEYTEMP1 # LOW5 INTO KEYTEMP1
062701,000079: 07,3733 00006 EXTEND
062702,000080: 07,3734 75006 MP BIT10 # SHIFT RIGHT 5
062703,000081: 07,3735 54734 TS KEYTEMP2
062704,000082: 07,3736 74362 MASK LOW5 # MID 5
062705,000083: 07,3737 63773 AD HI10
062706,000084: 07,3740 03770 TC UPTEST
062707,000085: 07,3741 35006 CAF BIT10
062708,000086: 07,3742 00006 EXTEND
062709,000087: 07,3743 70734 MP KEYTEMP2 # SHIFT RIGHT 5
062710,000088: 07,3744 74362 MASK LOW5 # HIGH 5
062711,000089: 07,3745 40000 COM
062712,000090: 07,3746 03770 TC UPTEST
062713,000091:
062714,000092: 07,3747 43776 UPOK CS ELRCODE # CODE IS GOOD. IF CODE = `ERROR RESET',
062715,000093: 07,3750 60073 AD KEYTEMP1 # CLEAR UPLOCKFL (SET BIT4 OF FLAGWRD7 = 0)
062716,000094: 07,3751 00006 EXTEND # IF CODE DOES NOT = `ERROR RESET', ACCEPT
062717,000095: 07,3752 13760 BZF CLUPLOCK # CODE ONLY IF UPLOCKFL IS CLEAR (=0).
062718,000096:
062719,000097: 07,3753 35014 CAF BIT4 # TEST UPLOCKFL FOR 0 OR 1
062720,000098: 07,3754 70103 MASK FLAGWRD7
062721,000099: 07,3755 10000 CCS A
062722,000100: 07,3756 05333 TC RESUME # UPLOCKFL = 1
062723,000101: 07,3757 03706 TC ACCEPTUP # UPLOCKFL = 0
062724,000102:
062725,000103: 07,3760 45014 CLUPLOCK CS BIT4 # CLEAR UPLOCKFL (I.E., SET BIT 4 OF
062726,000104: 07,3761 70103 MASK FLAGWRD7 # FLAGWRD7 = 0)
062727,000105: 07,3762 54103 TS FLAGWRD7
062728,000106: 07,3763 03706 TC ACCEPTUP
062729,000107:
062730,000108: # CODE IS BAD
062731,000109: 07,3764 40103 TMFAIL2 CS FLAGWRD7 # LOCK OUT FURTHER UPLINK ACTIVITY
062732,000110: 07,3765 75014 MASK BIT4 # (BY SETTING UPLOCKFL = 1) UNTIL
062733,000111: 07,3766 26103 ADS FLAGWRD7 # `ERROR RESET' IS SENT VIA UPLINK.
062734,000112: 07,3767 05333 TC RESUME
062735,000113: 07,3770 60073 UPTEST AD KEYTEMP1
![]() |
Page 1451 |
062737,000115: 07,3771 10000 CCS A
062738,000116: 07,3772 03764 TC TMFAIL2
062739,000117: 07,3773 77740 HI10 OCT 77740
062740,000118: 07,3774 03764 TC TMFAIL2
062741,000119: 07,3775 00002 TC Q
062742,000120:
062743,000121: 07,3776 00022 ELRCODE OCT 22
062744,000122:
062745,000123: # `UPLINK ACTIVITY LIGHT' IS TURNED OFF BY .....
062746,000124: # 1. VBRELDSP
062747,000125: # 2. ERROR RESET
062748,000126: # 3. UPDATE PROGRAM (P27) ENTERED BY V70,V71,V72, AND V73.
062749,000127:
062750,000128: # THE RECEPTION OF A BAD CODE (I.E., CCC FAILURE) LOCKS OUT FURTHER UPLINK ACTIVITY BY SETTING BIT4 OF FLAGWRD7 = 1.
062751,000129: # THIS INDICATION WILL BE TRANSFERRED TO THE GROUND BY THE DOWNLINK WHICH DOWNLINKS ALL FLAGWORDS.
062752,000130: # WHEN UPLINK ACTIVITY IS LOCKED OUT, IT CAN BE ALLOWED WHEN THE GROUND UPLINKS AND `ERROR RESET' CODE.
062753,000131: # (IT IS RECOMMENDED THAT THE `ERROR LIGHT RESET' CODE IS PRECEEDED BY 16 BITS THE FIRST OF WHICH IS 1 FOLLOWED
062754,000132: # BY 15 ZEROS. THIS WILL ELIMINATE EXTRANEOUS BITS FROM INLINK WHICH MAY HAVE BEEN LEFT OVER FROM THE ORIGINAL
062755,000133: # FAILURE).
062756,000134:
062757,000135: # UPLINK ACTIVITY IS ALSO ALLOWED (UNLOCKED) DURING FRESH START WHEN FRESH START SETS BIT4 OF FLAGWRD7 = 0.
062758,000136:
062759,000137:
End of include-file KEYRUPT_UPRUPT.agc. Parent file is MAIN.agc