Source Code
These source-code files were derived originally from the scan from MIT's Dibner Institute's
now-discontinued website titled "History of Recent Science and Technology", which
in turn was originally created by Gary Neff, though his high-quality scans were
unfortunately reduced in legibility when presented online.
The markings on the front of the
printout imply that it was the original AGC developer Norm Brodeur's copy.
A scan by Ron Burkey has superceded it, made from a more-legible copy from the collection of original
AGC developer Fred Martin. The source code was transcribed from
those images by Ron Burkey. 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:ASSEMBLE REVISION 249 OF AGC PROGRAM COLOSSUS BY NASA 2021111-041 20'35 OCT. 28,1968Note that the date is the date of the printout, not the date of the program revision. |
061302,000002: ## Copyright: Public domain.
061303,000003: ## Filename: KEYRUPT_UPRUPT.agc
061304,000004: ## Purpose: Part of the source code for Colossus, build 249.
061305,000005: ## It is part of the source code for the Command Module's (CM)
061306,000006: ## Apollo Guidance Computer (AGC), possibly for Apollo 8 and 9.
061307,000007: ## Assembler: yaYUL
061308,000008: ## Reference: Starts on p. 1439 of 1701.pdf.
061309,000009: ## Contact: Ron Burkey <info@sandroid.org>.
061310,000010: ## Website: www.ibiblio.org/apollo.
061311,000011: ## Mod history: 08/30/04 RSB. Adapted from corresponding Luminary131 file.
061312,000012: ##
061313,000013: ## The contents of the "Colossus249" files, in general, are transcribed
061314,000014: ## from a scanned document obtained from MIT's website,
061315,000015: ## http://hrst.mit.edu/hrs/apollo/public/archive/1701.pdf. Notations on this
061316,000016: ## document read, in part:
061317,000017: ##
061318,000018: ## Assemble revision 249 of AGC program Colossus by NASA
061319,000019: ## 2021111-041. October 28, 1968.
061320,000020: ##
061321,000021: ## This AGC program shall also be referred to as
061322,000022: ## Colossus 1A
061323,000023: ##
061324,000024: ## Prepared by
061325,000025: ## Massachusetts Institute of Technology
061326,000026: ## 75 Cambridge Parkway
061327,000027: ## Cambridge, Massachusetts
061328,000028: ## under NASA contract NAS 9-4065.
061329,000029: ##
061330,000030: ## Refer directly to the online document mentioned above for further information.
061331,000031: ## Please report any errors (relative to 1701.pdf) to info@sandroid.org.
061332,000032: ##
061333,000033: ## In some cases, where the source code for Luminary 131 overlaps that of
061334,000034: ## Colossus 249, this code is instead copied from the corresponding Luminary 131
061335,000035: ## source file, and then is proofed to incorporate any changes.
061336,000036:
Page 1439 |
061338,000038: 14,3744 BANK 14
061339,000039: 07,2000 SETLOC KEYRUPT
061340,000040: 07,2000 BANK
061341,000041: 07,3613 COUNT* $$/KEYUP
061342,000042:
061343,000043: 07,3613 54016 KEYRUPT1 TS BANKRUPT
061344,000044: 07,3614 56002 XCH Q
061345,000045: 07,3615 54012 TS QRUPT
061346,000046: 07,3616 04414 TC LODSAMPT # TIME IS SNATCHED IN RUPT FOR NOUN 65.
061347,000047: 07,3617 34362 CAF LOW5
061348,000048: 07,3620 00006 EXTEND
061349,000049: 07,3621 02015 RAND MNKEYIN # CHECK IF KEYS 5M-1M ON
061350,000050: 07,3622 54073 KEYCOM TS RUPTREG4
061351,000051: 07,3623 40101 CS FLAGWRD5
061352,000052: 07,3624 74674 MASK BIT15
061353,000053: 07,3625 26101 ADS FLAGWRD5
061354,000054:
061355,000055: 07,3626 34371 ACCEPTUP CAF CHRPRIO # (NOTE: RUPTREG4 = KEYTEMP1)
061356,000056: 07,3627 05027 TC NOVAC
061357,000057: 07,3630 0777 EBANK= DSPCOUNT
061358,000058: 07,3630 02000 60101 2CADR CHARIN
061359,000059:
061360,000060: 07,3632 30073 CA RUPTREG4
061361,000061: 07,3633 50064 INDEX LOCCTR
061362,000062: 07,3634 54154 TS MPAC # LEAVE 5 BIT KEY CODE IN MPAC FOR CHARIN
061363,000063: 07,3635 05222 TC RESUME
061364,000064:
Page 1440 |
061366,000066: # UPRUPT PROGRAM
061367,000067:
061368,000068: 07,3636 54016 UPRUPT TS BANKRUPT
061369,000069: 07,3637 56002 XCH Q
061370,000070: 07,3640 54012 TS QRUPT
061371,000071: 07,3641 04414 TC LODSAMPT # TIME IS SNATCHED IN RUPT FOR NOUN 65.
061372,000072: 07,3642 34714 CAF ZERO
061373,000073: 07,3643 56045 XCH INLINK
061374,000074: 07,3644 54073 TS KEYTEMP1
061375,000075: 07,3645 34710 CAF BIT3 # TURN ON UPACT LIGHT
061376,000076: 07,3646 00006 EXTEND # (BIT 3 OF CHANNEL 11)
061377,000077: 07,3647 05011 WOR DSALMOUT
061378,000078: 07,3650 34362 UPRPT1 CAF LOW5 # TEST FOR TRIPLE CHAR REDUNDANCY
061379,000079: 07,3651 70073 MASK KEYTEMP1 # LOW5 OF WORD
061380,000080: 07,3652 56073 XCH KEYTEMP1 # LOW5 INTO KEYTEMP1
061381,000081: 07,3653 00006 EXTEND
061382,000082: 07,3654 74701 MP BIT10 # SHIFT RIGHT 5
061383,000083: 07,3655 54734 TS KEYTEMP2
061384,000084: 07,3656 74362 MASK LOW5 # MID 5
061385,000085: 07,3657 63713 AD HI10
061386,000086: 07,3660 03710 TC UPTEST
061387,000087: 07,3661 34701 CAF BIT10
061388,000088: 07,3662 00006 EXTEND
061389,000089: 07,3663 70734 MP KEYTEMP2 # SHIFT RIGHT 5
061390,000090: 07,3664 74362 MASK LOW5 # HIGH 5
061391,000091: 07,3665 40000 COM
061392,000092: 07,3666 03710 TC UPTEST
061393,000093:
061394,000094: 07,3667 43716 UPCK CS ELRCODE # CODE IS GOOD. IF CODE = `ERROR RESET',
061395,000095: 07,3670 60073 AD KEYTEMP1 # CLEAR UPLOCKFL (SET BIT4 OF FLAGWRD7 = 0)
061396,000096: 07,3671 00006 EXTEND # IF CODE DOES NOT = `ERROR RESET', ACCEPT
061397,000097: 07,3672 13700 BZF CLUPLOCK # CODE ONLY IF UPLOCKFL IS CLEAR (=0).
061398,000098:
061399,000099: 07,3673 34707 CAF BIT4 # TEST UPLOCKFL FOR 0 OR 1
061400,000100: 07,3674 70103 MASK FLAGWRD7
061401,000101: 07,3675 10000 CCS A
061402,000102: 07,3676 05222 TC RESUME # UPLOCKFL = 1
061403,000103: 07,3677 03626 TC ACCEPTUP # UPLOCKFL = 0
061404,000104:
061405,000105: 07,3700 44707 CLUPLOCK CS BIT4 # CLEAR UPLOCKFL (I.E., SET BIT 4 OF
061406,000106: 07,3701 70103 MASK FLAGWRD7 # FLAGWRD7 = 0)
061407,000107: 07,3702 54103 TS FLAGWRD7
061408,000108: 07,3703 03626 TC ACCEPTUP
061409,000109:
061410,000110: # CODE IS BAD
061411,000111: 07,3704 40103 TMFAIL2 CS FLAGWRD7 # LOCK OUT FURTHER UPLINK ACTIVITY
061412,000112: 07,3705 74707 MASK BIT4 # (BY SETTING UPLOCKFL = 1) UNTIL
061413,000113: 07,3706 26103 ADS FLAGWRD7 # `ERROR RESET' IS SENT VIA UPLINK.
061414,000114: 07,3707 05222 TC RESUME
061415,000115: 07,3710 60073 UPTEST AD KEYTEMP1
Page 1441 |
061417,000117: 07,3711 10000 CCS A
061418,000118: 07,3712 03704 TC TMFAIL2
061419,000119: 07,3713 77740 HI10 OCT 77740
061420,000120: 07,3714 03704 TC TMFAIL2
061421,000121: 07,3715 00002 TC Q
061422,000122:
061423,000123: 07,3716 00022 ELRCODE OCT 22
061424,000124:
061425,000125: # `UPLINK ACTIVITY LIGHT' IS TURNED OFF BY .....
061426,000126: # 1. VBRELDSP
061427,000127: # 2. ERROR RESET
061428,000128: # 3. UPDATE PROGRAM (P27) ENTERED BY V70,V71,V72, AND V73.
061429,000129:
061430,000130: # THE RECEPTION OF A BAD CODE (I.E., CCC FAILURE) LOCKS OUT FURTHER UPLINK ACTIVITY BY SETTING BIT4 OF FLAGWRD7 = 1.
061431,000131: # THIS INDICATION WILL BE TRANSFERRED TO THE GROUND BY THE DOWNLINK WHICH DOWNLINKS ALL FLAGWORDS.
061432,000132: # WHEN UPLINK ACTIVITY IS LOCKED OUT, IT CAN BE ALLOWED WHEN THE GROUND UPLINS AND `ERROR RESET' CODE.
061433,000133: # (IT IS RECOMMENDED THAT THE `ERROR LIGHT RESET' CODE IS PRECEEDED BY 16 BITS THE FIRST OF WHICH IS 1 FOLLOWED
061434,000134: # BY 15 ZEROS. THIS WILL ELIMINATE EXTRANEOUS BITS FROM INLINK WHICH MAY HAVE BEEN LEFT OVER FROM THE ORIGINAL
061435,000135: # FAILURE).
061436,000136:
061437,000137: # UPLINK ACTIVITY IS ALSO ALLOWED (UNLOCKED) DURING FRECH START WHEN FRESH START SETS BIT4 OF FLAGWRD7 = 0.
061438,000138:
061439,000139:
End of include-file KEYRUPT_UPRUPT.agc. Parent file is MAIN.agc