75 lines
1.8 KiB
ArmAsm
75 lines
1.8 KiB
ArmAsm
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# Copyright: Public domain.
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# Filename: SINGLE_PRECISION_SUBROUTINES.agc
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# Purpose: Part of the source code for Colossus 2A, AKA Comanche 055.
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# It is part of the source code for the Command Module's (CM)
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# Apollo Guidance Computer (AGC), for Apollo 11.
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# Assembler: yaYUL
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# Contact: Ron Burkey <info@sandroid.org>.
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# Website: www.ibiblio.org/apollo.
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# Pages: 1207
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# Mod history: 2009-05-13 RSB Adapted from the Colossus249/ file of the
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# same name, using Comanche055 page images.
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#
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# This source code has been transcribed or otherwise adapted from digitized
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# images of a hardcopy from the MIT Museum. The digitization was performed
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# by Paul Fjeld, and arranged for by Deborah Douglas of the Museum. Many
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# thanks to both. The images (with suitable reduction in storage size and
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# consequent reduction in image quality as well) are available online at
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# www.ibiblio.org/apollo. If for some reason you find that the images are
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# illegible, contact me at info@sandroid.org about getting access to the
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# (much) higher-quality images which Paul actually created.
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#
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# Notations on the hardcopy document read, in part:
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#
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# Assemble revision 055 of AGC program Comanche by NASA
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# 2021113-051. 10:28 APR. 1, 1969
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#
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# This AGC program shall also be referred to as
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# Colossus 2A
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# Page 1207
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BLOCK 02
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# SINGLE PRECISION SINE AND COSINE
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COUNT 02/INTER
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SPCOS AD HALF # ARGUMENTS SCALED AT PI
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SPSIN TS TEMK
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TCF SPT
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CS TEMK
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SPT DOUBLE
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TS TEMK
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TCF POLLEY
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XCH TEMK
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INDEX TEMK
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AD LIMITS
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COM
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AD TEMK
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TS TEMK
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TCF POLLEY
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TCF ARG90
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POLLEY EXTEND
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MP TEMK
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TS SQ
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EXTEND
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MP C5/2
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AD C3/2
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EXTEND
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MP SQ
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AD C1/2
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EXTEND
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MP TEMK
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DDOUBL
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TS TEMK
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TC Q
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ARG90 INDEX A
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CS LIMITS
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TC Q # RESULT SCALED AT 1.
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# SPROOT WAS DELETED IN REV 51 OF MASTER. ASS. CONT. HAS CARDS.
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