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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046051,000002: ## Copyright: Public domain.
046052,000003: ## Filename: SINGLE_PRECISION_SUBROUTINES.agc
046053,000004: ## Purpose: A section of Luminary revision 98.
046054,000005: ## It is part of the reconstructed source code for the a
046055,000006: ## development version of the flight software for the Lunar
046056,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
046057,000008: ## The code has been recreated from a copy of Luminary 99
046058,000009: ## revision 001, using asterisks indicating changed lines in
046059,000010: ## the listing and Luminary Memo #85, which lists changes between
046060,000011: ## Luminary 98 and 99.
046061,000012: ## Reference: p. 1102
046062,000013: ## Assembler: yaYUL
046063,000014: ## Contact: Ron Burkey <info@sandroid.org>.
046064,000015: ## Website: www.ibiblio.org/apollo/index.html
046065,000016: ## Mod history: 2019-07-28 MAS Created from Luminary 99.
046066,000017:
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Page 1102
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046068,000019: 5032 BLOCK 02
046069,000020:
046070,000021: # SINGLE PRECISION SINE AND COSINE
046071,000022:
046072,000023: 5032 COUNT* $$/INTER
046073,000024: 5032 64736 SPCOS AD HALF # ARGUMENTS SCALED AT PI
046074,000025: 5033 55076 SPSIN TS TEMK
046075,000026: 5034 15036 TCF SPT
046076,000027: 5035 41076 CS TEMK
046077,000028: 5036 60000 SPT DOUBLE
046078,000029: 5037 55076 TS TEMK
046079,000030: 5040 15051 TCF POLLEY
046080,000031: 5041 57076 XCH TEMK
046081,000032: 5042 51076 INDEX TEMK
046082,000033: 5043 64734 AD LIMITS
046083,000034: 5044 40000 COM
046084,000035: 5045 61076 AD TEMK
046085,000036: 5046 55076 TS TEMK
046086,000037: 5047 15051 TCF POLLEY
046087,000038: 5050 15067 TCF ARG90
046088,000039: 5051 00006 POLLEY EXTEND
046089,000040: 5052 71076 MP TEMK
046090,000041: 5053 55077 TS SQ
046091,000042: 5054 00006 EXTEND
046092,000043: 5055 75005 MP C5/2
046093,000044: 5056 67737 AD C3/2
046094,000045: 5057 00006 EXTEND
046095,000046: 5060 71077 MP SQ
046096,000047: 5061 67717 AD C1/2
046097,000048: 5062 00006 EXTEND
046098,000049: 5063 71076 MP TEMK
046099,000050: 5064 20001 DDOUBL
046100,000051: 5065 55076 TS TEMK
046101,000052: 5066 00002 TC Q
046102,000053: 5067 50000 ARG90 INDEX A
046103,000054: 5070 44734 CS LIMITS
046104,000055: 5071 00002 TC Q # RESULT SCALED AT 1
046105,000056:
046106,000057:
End of include-file SINGLE_PRECISION_SUBROUTINES.agc. Parent file is MAIN.agc