Reassign AGC file extension to assembly files
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Luminary099/R63.agc
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Luminary099/R63.agc
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# Copyright: Public domain.
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# Filename: R63.agc
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# Purpose: Part of the source code for Luminary 1A build 099.
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# It is part of the source code for the Lunar Module's (LM)
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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: 338-341
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# Mod history: 2009-05-16 RSB Adapted from the corresponding
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# Luminary131 file, using page
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# images from Luminary 1A.
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#
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# This source code has been transcribed or otherwise adapted from
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# digitized images of a hardcopy from the MIT Museum. The digitization
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# was performed by Paul Fjeld, and arranged for by Deborah Douglas of
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# the Museum. Many thanks to both. The images (with suitable reduction
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# in storage size and consequent reduction in image quality as well) are
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# available online at www.ibiblio.org/apollo. If for some reason you
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# find that the images are illegible, contact me at info@sandroid.org
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# about getting access to the (much) higher-quality images which Paul
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# 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 001 of AGC program LMY99 by NASA 2021112-61
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# 16:27 JULY 14, 1969
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# Page 338
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# SUBROUTINE NAME: V89CALL
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# MOD NO: 0 DATE: 9 JAN 1968
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# MOD BY: DIGITAL DEVEL GROUP LOG SECTION: R63
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#
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# FUNCTIONAL DESCRIPTION:
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#
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# CALLED BY VERB 89 ENTER DURING P00. PRIO 10 USED. CALCULATES AND
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# DISPLAYS FINAL FDAI BALL ANGLES TO POINT LM +X OR +Z AXIS AT CSM.
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#
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# 1. KEY IN V 89 E ONLY IF IN PROG 00. IF NOT IN P00, OPERATOR ERROR AND
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# EXIT R63, OTHERWISE CONTINUE.
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#
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# 2. IF IN P00, DO IMU STATUS CHECK ROUTINE (R02BOTH). IF IMU ON AND ITS
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# ORIENTATION KNOWN TO LGC, CONTINUE.
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#
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# 3. FLASH DISPLAY V 04 N 06. R2 INDICATES WHICH SPACECRAFT AXIS IS TO
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# BE POINTED AT CSM. INITIAL CHOICE IS PREFERRED (+Z) AXIS (R2=1).
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# ASTRONAUT CAN CHANGE TO (+X) AXIS (R2 NOT =1) BY V 22 E 2 E. CONTINUE
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# AFTER KEYING IN PROCEED.
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#
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# 4. BOTH VEHICLE STATE VECTORS UPDATED BY CONIC EQS.
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#
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# 5. HALF MAGNITUDE UNIT LOS VECTOR (IN STABLE MEMBER COORDINATES) AND
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# HALF MAGNITUDE UNIT SPACECRAFT AXIS VECTOR (IN BODY COORDINATES)
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# PREPARED FOR VECPOINT.
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#
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# 6. GIMBAL ANGLES FROM VECPOINT TRANSFORMED INTO FDAI BALL ANGLES BY
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# BALLANGS. FLASH DISPLAY V 06 N 18 AND AWAIT RESPONSE.
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#
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# 7 RECYCLE -- RETURN TO STEP 4.
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# TERMINATE -- EXIT R63
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# PROCEED -- RESET 3AXISFLAG AND CALL R60LEM FOR ATTITUDE MANEUVER.
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#
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# CALLING SEQUENCE: V 89 E.
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#
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# SUBROUTINES CALLED: CHECKP00H, R02BOTH, GOXDSPF, CSMCONIC, LEMCONIC,
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# VECPOINT, BALLANGS, R60LEM.
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#
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# NORMAL EXIT MODES: TC ENDEXT
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#
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# ALARMS: 1. OPERATOR ERROR IF NOT IN P00.
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# 2. PROGRAM ALARM IF IMU IS OFF.
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# 3. PROGRAM ALARM IF IMU ORIENTATION IS UNKNOWN.
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#
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# OUTPUT: NONE
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#
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# ERASABLE INITIALIZATION REQUIRED: NONE
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#
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# DEBRIS: OPTION1, +1, TDEC1, PCINTVSM, SCAXIS, CPHI, CTHETA, CPSI,
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# Page 339
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# 3AXISFLAG.
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EBANK= RONE
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BANK 32
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SETLOC BAWLANGS
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BANK
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COUNT* $$/R63
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V89CALL TC BANKCALL # IMU STATUS CHECK. RETURNS IF ORIENTATION
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CADR R02BOTH # KNOWN. ALARMS IF NOT.
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CAF THREE # ALLOW ASTRONAUT TO SELECT DESIRED
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TS OPTIONX # TRACKING ATTITUDE AXIS.
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CAF ONE
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TS OPTIONX +1
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CAF VB04N12 # V 04 N 12.
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TC BANKCALL
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CADR GOFLASH
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TC ENDEXT # TERMINATE
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TC +2 # PROCEED
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TC -5 # DATA IN. OPTION1+1 = 1 FOR Z AXIS
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V89RECL TC INTPRET # 2 FOR X AXIS
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RTB DAD
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LOADTIME # READ PRESENT TIME
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DP1MIN
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STORE TSTART82 # SAVE TIME FOR LEMCONIC CALL
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STCALL TDEC1 # STORE TIME FOR CSMCONIC CALL
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CSMCONIC # CSM STATE VECTOR UPDATE
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VLOAD # CSMCONIC LEFT R VECTOR IN RATT
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RATT
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STODL RONE # SAVE FOR LINE OF SIGHT (LOS) COMPUTATION
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TSTART82
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STCALL TDEC1 # STORE TIME FOR LEMCONIC CALL
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LEMCONIC # LEM STATE VECTOR UPDATE
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VLOAD VSU # CSM POSITION -- LEM POSITION -- LOS
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RONE # LOS VECTOR LEFT IN MPAC
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RATT
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MXV RTB # (REFSMAT X LOS). TRANSFORMS LOS FROM
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REFSMMAT # REFERENCE COORD TO STAB MEMB COORD.
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NORMUNIT
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STORE POINTVSM # STORE LOS FOR VECPOINT CALCULATION
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EXIT
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CS OPTIONX +1 # 1 FOR Z AXIS. 2 FOR X AXIS.
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AD ONE
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EXTEND
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BZF ALINEZ
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ALINEX TC INTPRET # X AXIS ALIGNMENT
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VLOAD
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UNITX # READ (.5, 0, 0)
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# Page 340
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V89CALL1 STCALL SCAXIS # STORE SELECTED ALIGNMENT AXIS
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VECPOINT # PUTS DESIRED GIM ANG (OG,IG,MG) IN TMPAC
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STORE CPHI # STOR GIMBAL ANGLES FOR BALLANGS CALL
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EXIT
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TC BANKCALL
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CADR BALLANGS # PUTS DESIRED BALL ANGLE IN FDAIX,Y,Z
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CAF VB06N18 # V 06 N 18
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TC BANKCALL # NOUN 18 REFERS TO FDAIX,Y,Z
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CADR GOFLASH
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TC ENDEXT # TERMINATE
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TC +2 # PROCEED
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TC V89RECL # RECYCLE
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TC DOWNFLAG # RESET 3 AXIS FLAG
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ADRES 3AXISFLG # RESET BIT6 FLAG WORD 5
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TC BANKCALL # PERFORMS LEM MANEUVER TO ALIGN SELECTED
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CADR R60LEM # SPACECRAFT AXIS TO CSM.
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TCF ENDEXT # TERMINATE R63
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ALINEZ TC INTPRET # Z AXIS ALIGNMENT
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VLOAD GOTO
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UNITZ # READ (0, 0, .5)
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V89CALL1
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VB04N12 VN 412
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VB06N18 VN 0618
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# Page 341
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DP1MIN 2DEC 6000
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