RADAR_LEADIN_ROUTINES.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: RADAR_LEADIN_ROUTINES.agc
## Purpose: A section of a reconstructed, mixed version of Sundance
## It is part of the reconstructed source code for the Lunar
## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 9.
## No original listings of this program are available;
## instead, this file was created via disassembly of dumps
## of various revisions of Sundance core rope modules.
## Assembler: yaYUL
## Contact: Ron Burkey <info@sandroid.org>.
## Website: www.ibiblio.org/apollo/index.html
## Mod history: 2020-06-17 MAS Created from Luminary 69.
## Sundance 302
BANK 25
SETLOC RRLEADIN
BANK
EBANK= RSTACK
# RADAR SAMPLING LOOP.
COUNT* $$/RLEAD
RADSAMP CCS RSAMPDT # TIMES NORMAL ONCE-PER-SECOND SAMPLING.
TCF +2
TCF TASKOVER # +0 INSERTED MANUALLY TERMINATES TEST.
TC WAITLIST
EBANK= RSTACK
2CADR RADSAMP
CAF PRIO25
TC NOVAC
EBANK= RSTACK
2CADR DORSAMP
CAF BIT14 # FOR CYCLIC SAMPLING, RTSTDEX=
EXTEND # RTSTLOC/2 + RTSTBASE
MP RTSTLOC
AD RTSTBASE # 0 FOR RR, 2 FOR LR.
TS RTSTDEX
TCF TASKOVER
# DO THE ACTUAL RADAR SAMPLE.
DORSAMP TC VARADAR # SELECTS VARIABLE RADAR CHANNEL.
TC BANKCALL
CADR RADSTALL
INCR RFAILCNT # ADVANCE FAIL COUNTER BUT ACCEPT BAD DATA
DORSAMP2 INHINT
DXCH SAMPLSUM
INDEX RTSTLOC
DXCH RSTACK
CS RTSTLOC # CYCLE RTSTLOC.
AD RTSTMAX
EXTEND
BZF +3
CA RTSTLOC
AD TWO # STORAGE IS DP
TS RTSTLOC
TCF ENDOFJOB # CONTINUOUS SAMPLING AND 2N TRIES - GONE.
# VARIABLE RADAR DATA CALLER FOR ONE MEASUREMENT ONLY.
VARADAR CAF ONE # WILL BE SENT TO RADAR ROUTINE IN A BY
TS BUF2 # SWCALL.
INDEX RTSTDEX
CAF RDRLOCS
TCF SWCALL # NOT TOUCHING Q.
RDRLOCS CADR RRRANGE # = 0
CADR RRRDOT # = 1
CADR LRVELX # = 2
CADR LRVELY # = 3
CADR LRVELZ # = 4
CADR LRALT # = 5