Revision ed8b915de1b15341a2e1385a1b73df58bbb0707a authored by Ron Burkey on 17 July 2022, 12:55:37 UTC, committed by Ron Burkey on 17 July 2022, 12:55:37 UTC
When built with the newly-released wxWidgets 3.2, the VirtualAGC GUI program was displaying an "assertion error" popup, which you had to click through in order to run the program. This occurred until its settings file (VirtualAGC.cfg) had been written, which may not have happened until the VirtualAGC GUI was exited via its EXIT button.
1 parent eecb41c
GIMBAL_LOCK_AVOIDANCE.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: GIMBAL_LOCK_AVOIDANCE.agc
## Purpose: A section of the reconstructed source code for Luminary 130.
## This was the original program released for the Apollo 13 LM,
## although several more revisions would follow. It has been
## reconstructed from a listing of Luminary 131, from which it
## differs on only two lines in P70-P71. The difference is
## described in detail in Luminary memo #129, which was used
## to perform the reconstruction. This file is intended to be a
## faithful reconstruction, except that the code format has been
## changed to conform to the requirements of the yaYUL assembler
## rather than the original YUL assembler.
## Reference: p. 366
## Contact: Ron Burkey <info@sandroid.org>.
## Website: www.ibiblio.org/apollo/index.html
## Mod history: 05/11/03 RSB. Began transcribing.
## 05/14/05 RSB Corrected website reference above.
## 2017-01-06 RSB Page numbers now agree with those on the
## original harcopy, as opposed to the PDF page
## numbers in 1701.pdf.
## 2017-02-23 RSB Proofed comment text using octopus/ProoferComments.
## 2017-08-22 RSB Fixed comment-text typo identified in ZERLINA 56.
## 2018-09-04 MAS Copied from Luminary 131 for Luminary 130.
## Page 366
BANK 15
SETLOC KALCMON1
BANK
# DETECTING GIMBAL LOCK
LOCSKIRT EQUALS NOGIMLOC
NOGIMLOC SET
CALCMAN3
WCALC LXC,1 DLOAD*
RATEINDX # CHOOSE THE DESIRED MANEUVER RATE
ARATE,1 # FROM A LIST OF FOUR
SR4 CALL # COMPUTE THE INCREMENTAL ROTATION MATRIX
DELCOMP # DEL CORRESPONDING TO A 1 SEC ROTATION
# ABOUT COF
DLOAD* VXSC
ARATE,1
COF
STODL BRATE # COMPONENT MANEUVER RATES 45 DEG/SEC
AM
DMP DDV*
ANGLTIME
ARATE,1
SR
5
STORE TM # MANEUVER EXECUTION TIME SCALED AS T2
SETGO
CALCMAN2 # 0(OFF) = CONTINUE MANEUVER
NEWANGL +1 # 1(ON) = START MANEUVER
# THE FOUR SELECTABLE FREE FALL MANEUVER RATES SELECTED BY
# LOADING RATEINDX WITH 0, 2, 4, 6, RESPECTIVELY
ARATE 2DEC .0088888888 # = 0.2 DEG/SEC $ 22.5 DEG/SEC
2DEC .0222222222 # = 0.5 DEG/SEC $ 22.5 DEG/SEC
2DEC .0888888888 # = 2.0 DEG/SEC $ 22.5 DEG/SEC
2DEC .4444444444 # = 10.0 DEG/SEC $ 22.5 DEG/SEC
ANGLTIME 2DEC .0001907349 # = 100B-19 FUDGE FACTOR TO CONVERT
# MANEUVER ANGLE TO MANEUVER TIME
Computing file changes ...
