Source Code
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These source-code files are part of a reconstructed copy of Luminary 97, the
original release 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 memos 83 and 85, using asterisks
indicating changed lines in the listing as a guide. The reconstruction was
verified by matching memory-bank checksums to those listed in drawing 2021152D.
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 97 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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046276,000002: ## Copyright: Public domain.
046277,000003: ## Filename: SINGLE_PRECISION_SUBROUTINES.agc
046278,000004: ## Purpose: A section of Luminary revision 97.
046279,000005: ## It is part of the reconstructed source code for the
046280,000006: ## original release of the flight software for the Lunar
046281,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
046282,000008: ## The code has been recreated from a copy of Luminary 99
046283,000009: ## revision 001, using asterisks indicating changed lines in
046284,000010: ## the listing and Luminary Memos #83 and #85, which list
046285,000011: ## changes between Luminary 97 and 98, and 98 and 99. The
046286,000012: ## code has been adapted such that the resulting bugger words
046287,000013: ## exactly match those specified for Luminary 97 in NASA drawing
046288,000014: ## 2021152D, which gives relatively high confidence that the
046289,000015: ## reconstruction is correct.
046290,000016: ## Reference: p. 1102
046291,000017: ## Assembler: yaYUL
046292,000018: ## Contact: Ron Burkey <info@sandroid.org>.
046293,000019: ## Website: www.ibiblio.org/apollo/index.html
046294,000020: ## Mod history: 2019-07-28 MAS Created from Luminary 99.
046295,000021:
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Page 1102
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046297,000023: 5032 BLOCK 02
046298,000024:
046299,000025: # SINGLE PRECISION SINE AND COSINE
046300,000026:
046301,000027: 5032 COUNT* $$/INTER
046302,000028: 5032 64736 SPCOS AD HALF # ARGUMENTS SCALED AT PI
046303,000029: 5033 55076 SPSIN TS TEMK
046304,000030: 5034 15036 TCF SPT
046305,000031: 5035 41076 CS TEMK
046306,000032: 5036 60000 SPT DOUBLE
046307,000033: 5037 55076 TS TEMK
046308,000034: 5040 15051 TCF POLLEY
046309,000035: 5041 57076 XCH TEMK
046310,000036: 5042 51076 INDEX TEMK
046311,000037: 5043 64734 AD LIMITS
046312,000038: 5044 40000 COM
046313,000039: 5045 61076 AD TEMK
046314,000040: 5046 55076 TS TEMK
046315,000041: 5047 15051 TCF POLLEY
046316,000042: 5050 15067 TCF ARG90
046317,000043: 5051 00006 POLLEY EXTEND
046318,000044: 5052 71076 MP TEMK
046319,000045: 5053 55077 TS SQ
046320,000046: 5054 00006 EXTEND
046321,000047: 5055 75005 MP C5/2
046322,000048: 5056 67737 AD C3/2
046323,000049: 5057 00006 EXTEND
046324,000050: 5060 71077 MP SQ
046325,000051: 5061 67717 AD C1/2
046326,000052: 5062 00006 EXTEND
046327,000053: 5063 71076 MP TEMK
046328,000054: 5064 20001 DDOUBL
046329,000055: 5065 55076 TS TEMK
046330,000056: 5066 00002 TC Q
046331,000057: 5067 50000 ARG90 INDEX A
046332,000058: 5070 44734 CS LIMITS
046333,000059: 5071 00002 TC Q # RESULT SCALED AT 1
046334,000060:
046335,000061:
End of include-file SINGLE_PRECISION_SUBROUTINES.agc. Parent file is MAIN.agc