2016-07-07 08:47:26 +00:00
|
|
|
# Copyright: Public domain.
|
|
|
|
|
# Filename: P12.agc
|
|
|
|
|
# Purpose: Part of the source code for Luminary 1A build 099.
|
|
|
|
|
# It is part of the source code for the Lunar Module's (LM)
|
|
|
|
|
# Apollo Guidance Computer (AGC), for Apollo 11.
|
|
|
|
|
# Assembler: yaYUL
|
|
|
|
|
# Contact: Hartmuth Gutsche <hgutsche@xplornet.com>.
|
|
|
|
|
# Website: www.ibiblio.org/apollo.
|
|
|
|
|
# Pages: 838-842
|
|
|
|
|
# Mod history: 2009-05-23 HG Transcribed from page images.
|
|
|
|
|
#
|
|
|
|
|
# This source code has been transcribed or otherwise adapted from
|
|
|
|
|
# digitized images of a hardcopy from the MIT Museum. The digitization
|
|
|
|
|
# was performed by Paul Fjeld, and arranged for by Deborah Douglas of
|
|
|
|
|
# the Museum. Many thanks to both. The images (with suitable reduction
|
|
|
|
|
# in storage size and consequent reduction in image quality as well) are
|
|
|
|
|
# available online at www.ibiblio.org/apollo. If for some reason you
|
|
|
|
|
# find that the images are illegible, contact me at info@sandroid.org
|
|
|
|
|
# about getting access to the (much) higher-quality images which Paul
|
|
|
|
|
# actually created.
|
|
|
|
|
#
|
|
|
|
|
# Notations on the hardcopy document read, in part:
|
|
|
|
|
#
|
|
|
|
|
# Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
|
2016-12-28 16:11:25 +00:00
|
|
|
# 16:27 JULY 14, 1969
|
2016-07-07 08:47:26 +00:00
|
|
|
|
|
|
|
|
# Page 838
|
|
|
|
|
BANK 24
|
|
|
|
|
SETLOC P12
|
|
|
|
|
BANK
|
|
|
|
|
|
|
|
|
|
EBANK= DVCNTR
|
|
|
|
|
COUNT* $$/P12
|
|
|
|
|
|
|
|
|
|
P12LM TC PHASCHNG
|
|
|
|
|
OCT 04024
|
|
|
|
|
|
|
|
|
|
TC BANKCALL
|
|
|
|
|
CADR R02BOTH # CHECK THE STATUS OF THE IMU.
|
2016-12-28 16:11:25 +00:00
|
|
|
|
|
|
|
|
TC UPFLAG
|
2016-07-07 08:47:26 +00:00
|
|
|
ADRES MUNFLAG
|
2016-12-28 16:11:25 +00:00
|
|
|
|
2016-07-07 08:47:26 +00:00
|
|
|
TC UPFLAG # INSURE 4-JET TRANSLATION CAPABILITY.
|
|
|
|
|
ADRES ACC4-2FL
|
2016-12-28 16:11:25 +00:00
|
|
|
|
2016-07-07 08:47:26 +00:00
|
|
|
TC UPFLAG # PREVENT R10 FROM ISSUING CROSS-POINTER
|
|
|
|
|
ADRES R10FLAG # OUTPUTS.
|
2016-12-28 16:11:25 +00:00
|
|
|
|
2016-07-12 23:52:11 +00:00
|
|
|
TC CLRADMOD # INITIALIZE RADMODES FOR R29.
|
2016-12-28 16:11:25 +00:00
|
|
|
|
2016-07-11 12:35:15 +00:00
|
|
|
TC DOWNFLAG # CLEAR RENDEZVOUS FLAG FOR P22
|
2016-07-07 08:47:26 +00:00
|
|
|
ADRES RNDVZFLG
|
2016-12-28 16:11:25 +00:00
|
|
|
|
2016-07-07 08:47:26 +00:00
|
|
|
CAF THRESH2 # INITIALIZE DVMON
|
|
|
|
|
TS DVTHRUSH
|
|
|
|
|
CAF FOUR
|
|
|
|
|
TS DVCNTR
|
|
|
|
|
|
|
|
|
|
CA ZERO
|
|
|
|
|
TS TRKMKCNT # SHOW THAT R29 DOWNLINK DATA IS NOT READY.
|
|
|
|
|
CAF V06N33A
|
|
|
|
|
TC BANKCALL # FLASH TIG
|
|
|
|
|
CADR GOFLASH
|
2020-03-04 17:17:16 +00:00
|
|
|
TCF GOTOPOOH
|
2016-07-07 08:47:26 +00:00
|
|
|
TCF +2 # PROCEED
|
|
|
|
|
TCF -5 # ENTER
|
|
|
|
|
|
|
|
|
|
TC PHASCHNG
|
|
|
|
|
OCT 04024
|
|
|
|
|
|
|
|
|
|
TC INTPRET
|
|
|
|
|
CALL # INITIALZE WM AND /LAND/
|
|
|
|
|
GUIDINIT
|
|
|
|
|
SET CALL
|
|
|
|
|
FLPI
|
|
|
|
|
P12INIT
|
|
|
|
|
# Page 839
|
|
|
|
|
P12LMB DLOAD
|
|
|
|
|
(TGO)A # SET TGO TO AN INITIAL NOMINAL VALUE.
|
|
|
|
|
STODL TGO
|
|
|
|
|
TIG
|
|
|
|
|
STCALL TDEC1
|
|
|
|
|
LEMPREC # ROTATE THE STATE VECTORS TO THE
|
|
|
|
|
VLOAD MXV # IGNITION TIME.
|
|
|
|
|
VATT
|
|
|
|
|
REFSMMAT
|
|
|
|
|
VSL1
|
|
|
|
|
STOVL V1S # COMPUTE V1S = VEL(TIG)*2(-7) M/CS.
|
|
|
|
|
RATT
|
|
|
|
|
MXV VSL6
|
|
|
|
|
REFSMMAT
|
|
|
|
|
STCALL R # COMPUTE R = POS(TIG)*2(-24) M.
|
|
|
|
|
MUNGRAV # COMPUTE GDT1/2(TIG)*2(-T)M/CS.
|
|
|
|
|
VLOAD UNIT
|
|
|
|
|
R
|
|
|
|
|
STCALL UNIT/R/ # COMPUTE UNIT/R/ FOR YCOMP.
|
|
|
|
|
YCOMP
|
|
|
|
|
SR DCOMP
|
|
|
|
|
5D
|
|
|
|
|
STODL XRANGE # INITIALIZE XRANGE FOR NOUN 76
|
|
|
|
|
VINJNOM
|
|
|
|
|
STODL ZDOTD
|
|
|
|
|
RDOTDNOM
|
|
|
|
|
STORE RDOTD
|
|
|
|
|
EXIT
|
|
|
|
|
|
|
|
|
|
TC PHASCHNG
|
|
|
|
|
OCT 04024
|
|
|
|
|
|
|
|
|
|
NEWLOAD CAF V06N76 # FLASH CROSS-RANGE, AND APOLUNE VALUES.
|
|
|
|
|
TC BANKCALL
|
|
|
|
|
CADR GOFLASH
|
2020-03-04 17:17:16 +00:00
|
|
|
TCF GOTOPOOH
|
2016-07-07 08:47:26 +00:00
|
|
|
TCF +2 # PROCEED
|
|
|
|
|
TCF NEWLOAD # ENTER NEW DATA.
|
|
|
|
|
|
|
|
|
|
CAF P12ADRES
|
|
|
|
|
TS WHICH
|
|
|
|
|
|
|
|
|
|
TC PHASCHNG
|
|
|
|
|
OCT 04024
|
|
|
|
|
|
|
|
|
|
TC INTPRET
|
|
|
|
|
DLOAD SL
|
|
|
|
|
XRANGE
|
|
|
|
|
5D
|
|
|
|
|
DAD
|
|
|
|
|
# Page 840
|
|
|
|
|
Y
|
|
|
|
|
STOVL YCO
|
|
|
|
|
UNIT/R/
|
|
|
|
|
VXSC VAD
|
|
|
|
|
49FPS
|
|
|
|
|
V1S
|
|
|
|
|
STORE V # V(TIPOVER) = V(IGN) + 57FPS (UNIT/R/)
|
|
|
|
|
DOT SL1
|
|
|
|
|
UNIT/R/
|
|
|
|
|
STOVL RDOT # RDOT = 2(-7)
|
|
|
|
|
UNIT/R/
|
|
|
|
|
VXV UNIT
|
|
|
|
|
QAXIS
|
|
|
|
|
STORE ZAXIS1
|
|
|
|
|
SETGO
|
|
|
|
|
FLVR
|
|
|
|
|
ASCENT
|
|
|
|
|
P12RET DLOAD
|
|
|
|
|
ATP # ATP(2)*2(18)
|
|
|
|
|
DSQ PDDL
|
|
|
|
|
ATY # ATY(2)*2(18)
|
|
|
|
|
DSQ DAD
|
|
|
|
|
BZE SQRT
|
|
|
|
|
YAWDUN
|
|
|
|
|
SL1 BDDV
|
|
|
|
|
ATY
|
|
|
|
|
ARCSIN
|
|
|
|
|
YAWDUN STOVL YAW
|
|
|
|
|
UNFC/2
|
|
|
|
|
UNIT DOT
|
|
|
|
|
UNIT/R/
|
|
|
|
|
SL1 ARCCOS
|
|
|
|
|
DCOMP
|
|
|
|
|
STORE PITCH
|
|
|
|
|
EXIT
|
|
|
|
|
TC PHASCHNG
|
|
|
|
|
OCT 04024
|
|
|
|
|
|
|
|
|
|
TC DOWNFLAG
|
|
|
|
|
ADRES FLPI
|
2016-12-28 16:11:25 +00:00
|
|
|
|
2016-07-07 08:47:26 +00:00
|
|
|
INHINT
|
|
|
|
|
TC IBNKCALL
|
|
|
|
|
CADR PFLITEDB
|
|
|
|
|
RELINT
|
|
|
|
|
|
|
|
|
|
TC POSTJUMP
|
|
|
|
|
CADR BURNBABY
|
|
|
|
|
|
|
|
|
|
P12INIT DLOAD # INITIALIZE ENGINE DATA. USED FOR P12 AND
|
|
|
|
|
# Page 841
|
|
|
|
|
(1/DV)A # P71.
|
|
|
|
|
STORE 1/DV3
|
|
|
|
|
STORE 1/DV2
|
|
|
|
|
STODL 1/DV1
|
|
|
|
|
(AT)A
|
|
|
|
|
STODL AT
|
|
|
|
|
(TBUP)A
|
|
|
|
|
STODL TBUP
|
|
|
|
|
ATDECAY
|
|
|
|
|
DCOMP SL
|
|
|
|
|
11D
|
|
|
|
|
STORE TTO
|
|
|
|
|
SLOAD DCOMP
|
|
|
|
|
APSVEX
|
|
|
|
|
SR2
|
|
|
|
|
STORE VE
|
|
|
|
|
BOFF RVQ
|
|
|
|
|
FLAP
|
|
|
|
|
COMMINIT
|
|
|
|
|
COMMINIT DLOAD DAD # INITIALIZE TARGET DATA. USED BY P12, P70
|
|
|
|
|
HINJECT # AND P71 IF IT DOES NOT FOLLOW P70.
|
|
|
|
|
/LAND/
|
|
|
|
|
STODL RCO
|
|
|
|
|
HI6ZEROS
|
|
|
|
|
STORE TXO
|
|
|
|
|
STORE YCO
|
|
|
|
|
STORE RDOTD
|
|
|
|
|
STOVL YDOTD
|
|
|
|
|
VRECTCSM
|
|
|
|
|
VXV MXV
|
|
|
|
|
RRECTCSM
|
|
|
|
|
REFSMMAT
|
|
|
|
|
UNIT
|
|
|
|
|
STORE QAXIS
|
|
|
|
|
RVQ
|
|
|
|
|
P12ADRES REMADR P12TABLE
|
|
|
|
|
|
|
|
|
|
SETLOC P12A
|
|
|
|
|
BANK
|
|
|
|
|
COUNT* $$/P12
|
|
|
|
|
|
|
|
|
|
GUIDINIT STQ SETPD
|
|
|
|
|
TEMPR60
|
|
|
|
|
0D
|
|
|
|
|
VLOAD PUSH
|
|
|
|
|
UNITZ
|
|
|
|
|
RTB PUSH
|
|
|
|
|
LOADTIME
|
|
|
|
|
CALL
|
|
|
|
|
RP-TO-R
|
|
|
|
|
# Page 842
|
|
|
|
|
MXV VXSC
|
|
|
|
|
REFSMMAT
|
|
|
|
|
MOONRATE
|
|
|
|
|
STOVL WM
|
|
|
|
|
RLS
|
|
|
|
|
ABVAL SL3
|
|
|
|
|
STCALL /LAND/
|
|
|
|
|
TEMPR60
|
|
|
|
|
|
|
|
|
|
49FPS 2DEC .149352 B-6 # EXPECTED RDOT AT TIPOVER
|
|
|
|
|
VINJNOM 2DEC 16.7924 B-7 # 5509.5 FPS(APO=30NM WITH RDOT=19.5FPS)
|
|
|
|
|
RDOTDNOM 2DEC .059436 B-7 # 19.5 FPS
|
|
|
|
|
|
|
|
|
|
|
