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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045996,000002: ## Copyright: Public domain.
045997,000003: ## Filename: INTERPRETIVE_CONSTANTS.agc
045998,000004: ## Purpose: A section of Luminary revision 98.
045999,000005: ## It is part of the reconstructed source code for the a
046000,000006: ## development version of the flight software for the Lunar
046001,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
046002,000008: ## The code has been recreated from a copy of Luminary 99
046003,000009: ## revision 001, using asterisks indicating changed lines in
046004,000010: ## the listing and Luminary Memo #85, which lists changes between
046005,000011: ## Luminary 98 and 99.
046006,000012: ## Reference: pp. 1100-1101
046007,000013: ## Assembler: yaYUL
046008,000014: ## Contact: Ron Burkey <info@sandroid.org>.
046009,000015: ## Website: www.ibiblio.org/apollo/index.html
046010,000016: ## Mod history: 2019-07-28 MAS Created from Luminary 99.
046011,000017: ## 2021-05-30 ABS DFC-6 -> DEC-6, DFC-12 -> DEC-12
046012,000018:
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Page 1100
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046014,000020: 23,2000 SETLOC INTPRET1
046015,000021: 23,2000 BANK
046016,000022:
046017,000023: 23,2511 COUNT* $$/ICONS
046018,000024: 23,2511 10000 00000 DP1/4TH 2DEC .25
046019,000025:
046020,000026: 23,2513 00000 00000 UNITZ 2DEC 0 B-28
046021,000027:
046022,000028: 23,2515 00000 00000 UNITY 2DEC 0 B-28
046023,000029:
046024,000030: 23,2517 20000 00000 UNITX 2DEC .5
046025,000031:
046026,000032: 23,2521 00000 00000 ZEROVECS 2DEC 0 B-28
046027,000033:
046028,000034: 23,2523 00000 00000 2DEC 0 B-28
046029,000035:
046030,000036: 23,2525 00000 00000 2DEC 0 B-28
046031,000037:
046032,000038: 23,2527 23,2517 DPHALF = UNITX
046033,000039: 23,2527 37777 DPPOSMAX OCT 37777
046034,000040: 23,2530 37777 OCT 37777
046035,000041:
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Page 1101
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046037,000043: # INTERPRETIVE CONSTANTS IN THE OTHER HALF-MEMORY
046038,000044:
046039,000045: 12,2000 SETLOC INTPRET2
046040,000046: 12,2000 BANK
046041,000047:
046042,000048: 12,2000 COUNT* $$/ICONS
046043,000049: 12,2000 00000 00000 ZUNIT 2DEC 0 B-28
046044,000050:
046045,000051: 12,2002 00000 00000 YUNIT 2DEC 0 B-28
046046,000052:
046047,000053: 12,2004 20000 00000 XUNIT 2DEC .5
046048,000054:
046049,000055: 12,2006 00000 00000 ZEROVEC 2DEC 0 B-28
046050,000056:
046051,000057: 12,2010 00000 00000 2DEC 0 B-28
046052,000058:
046053,000059: 12,2012 00000 00000 2DEC 0 B-28
046054,000060:
046055,000061: 12,2014 77777 OCT 77777 # -0, -6, -12 MUST REMAIN IN THIS ORDER
046056,000062: 12,2015 77771 DEC-6 DEC -6 B-14
046057,000063: 12,2016 77763 DEC-12 DEC -12 B-14
046058,000064: 12,2017 37777 37777 LODPMAX 2OCT 3777737777 # THESE TWO CONSTANTS MUST REMAIN
046059,000065:
046060,000066: 12,2021 37777 37777 LODPMAX1 2OCT 3777737777 # ADJACENT AND THE SAME FOR INTEGRATION
046061,000067:
046062,000068: 12,2023 12,2006 ZERODP = ZEROVEC
046063,000069: 12,2023 12,2004 HALFDP = XUNIT
046064,000070:
046065,000071:
End of include-file INTERPRETIVE_CONSTANTS.agc. Parent file is MAIN.agc