### FILE="Main.annotation"
## Copyright:   Public domain.
## Filename:    INPUT_OUTPUT_CHANNEL_BIT_DESCRIPTIONS.agc
## Purpose:     The main source file for Luminary revision 069.
##              It is part of the source code for the original release
##              of the flight software for the Lunar Module's (LM) Apollo
##              Guidance Computer (AGC) for Apollo 10. The actual flown
##              version was Luminary 69 revision 2, which included a
##              newer lunar gravity model and only affected module 2.
##              This file is intended to be a faithful transcription, except
##              that the code format has been changed to conform to the
##              requirements of the yaYUL assembler rather than the
##              original YUL assembler.
## Reference:   pp. 70-76
## Assembler:   yaYUL
## Contact:     Ron Burkey <info@sandroid.org>.
## Website:     www.ibiblio.org/apollo/index.html
## Mod history: 2016-12-13 MAS  Created from Luminary 99.
##              2017-01-03 HG   Transcribed
##		2017-01-25 RSB	Proofed comment text using octopus/prooferComments
##				but no errors found.
##		2017-03-15 RSB	Comment-text fixes identified in 5-way
##				side-by-side diff of Luminary 69/99/116/131/210.

## Page 70

# *** CHANNEL DESCRIPTIONSF WORDS ARE ALLOCATED IN ERASABLE ASSIGNMENTS ***

#     CHANNEL 1     IDENTICAL TO COMPUTER REGISTER L (0001)
#

#     CHANNEL 2     IDENTICAL TO COMPUTER REGISTER Q (0002)
#

#     CHANNEL 3     HISCALAR; INPUT CHANNEL; MOST SIGNIFICANT 14 BITS FROM 33 STAGE BINARY COUNTER. SCALE
#                   FACTOR IS B23 IN CSEC, SO MAX VALUE ABOUT 23.3 HOURS AND LEAST SIGNIFICANT BIT 5.12 SECS.
#

#     CHANNEL 4     LOSCALAR; INPUT CHANNEL; NEXT MOST SIGNIFICANT 14 BITS FROM THE 33 STAGE BINARY COUNTER
#                   ASSOCIATED WITH CHANNEL 3. SCALE FACTOR IS B9 IN  CSEC. SO MAX VAL IS 5.12 SEC AND LEAST
#                   SIGNIFICANT BIT IS 1/3200 SEC. SCALE FACTOR OF D.P. WORD WITH CHANNEL 3 IS B23 CSEC.
#

#     CHANNEL 5     PYJETS; OUTPUT CHANNEL; PITCH RCS JET CONTROL.   (REACTION CONTROL SYSTEM) USES BITS 1-8.
#

#     CHANNEL 6     ROLLJETS; OUTPUT CHANNEL; ROLL RCS JET CONTROL.   (REACTION CONTROL SYSTEM) USES BIT 1-8.
#

#     CHANNEL 7     SUPERBNK; OUTPUT CHANNEL; NOT RESET BY RESTART;   FIXED EXTENSION BITS USED TO SELECT THE
#                   APPROPRIATE FIXED MEMORY BANK IF FBANK IS 30 OCTAL OR MORE. USES BITS 5-7.
#

#     CHANNEL 10    OUTO; OUTPUT CHANNEL; REGISTER USED TO TRANSMIT   LATCHING-RELAY DRIVING INFORMATION FOR
#                   THE DISPLAY SYSTEM. BITS 15-12 ARE SET TO THE ROW NUMBER (1-14 OCTAL) OF THE RELAY TO BE
#                   CHANGED AND BITS 11-1 CONTAIN THE REQUIRED SETTINGS FOR THE RELAYS IN THE ROW.
#

#     CHANNEL 11    DSALMOUT; OUTPUT CHANNEL; REGISTER WHOSE BITS ARE USED FOR ENGINE ON-OFF CONTROL AND TO
#                   DRIVE INDIVIDUAL INDICATORS OF THE DISPLAY SYSTEM. BITS 1-7 ARE A RELAYS.
#
#       BIT 1       ISS WARNING
#
#       BIT 2       LIGHT COMPUTER ACTIVITY LAMP
#
#       BIT 3       LIGHT UPLINK ACTIVITY LAMP
#
#       BIT 4       LIGHT TEMP CAUTION LAMP
#
#       BIT 5       LIGHT KEYBOARD RELEASE LAMP
#
#       BIT 6       FLASH VERB AND NOUN LAMPS
#
#       BIT 7       LIGHT OPERATOR ERROR LAMP

## Page 71
#
#       BIT 8       SPARE
#
#       BIT 9       TEST CONNECTOR OUTBIT
#
#       BIT 10      CAUTION RESET
#
#       BIT 11      SPARE
#
#       BIT 12      SPARE
#
#       BIT 13      ENGINE ON
#
#       BIT 14      ENGINE OFF
#
#       BIT 15      SPARE
#

#     CHANNEL 12    CHAN12; OUTPUT CHANNEL; BITS USED TO DRIVE NAVIGATION AND SPAECRAFT HARDWARE
#
#       BIT 1       ZERO RR CDU; CDU'S GIVE RRADAR INFORMATION FOR LM
#
#       BIT 2       ENABLE CDU RADAR ERROR COUNTERS
#
#       BIT 3       NOT USED
#
#       BIT 4       COARSE ALIGN ENABLE OF IMU
#
#       BIT 5       ZERO IMU CDU'S
#
#       BIT 6       ENABLE IMU ERROR COUNTER, CDU ERROR COUNTER.
#
#       BIT 7       SPARE
#
#       BIT 8       DISPLAY INERTIAL DATA
#
#       BIT 9       -PITCH GIMBAL TRIM (BELL MOTION) DESCENT ENGINE
#
#       BIT 10      +PITCH GIMBAL TRIM (BELL MOTION) DESCENT ENGINE
#
#       BIT 11      -ROLL GIMBAL TRIM (BELL MOTION) DESCENT ENGINE
#
#       BIT 12      +ROLL GIMBAL TRIM (BELL MOTION) DESCENT ENGINE
#
#       BIT 13      LR POSITION 2 COMMAND
#
#       BIT 14      ENABLE RENDESVOUS RADAR LOCK-ON;AUTO ANGLE TRACK'G
#
#       BIT 15      ISS TURN ON DELAY COMPLETE
#

## Page 72
#     CHANNEL 13    CHAN13; OUTPUT CHANNEL
#
#       BIT 1       RADAR C         PROPER SETTING OF THE A,B,C MATRIX
#       BIT 2       RADAR B         SELECTS CERTAIN RADAR
#       BIT 3       RADAR A         PARAMETERS TO BE READ.
#
#       BIT 4       RADAR ACTIVITY
#
#       BIT 5       NOT USED (CONNECTS AN ALTERNATE INPUT TO UPLINK)
#
#       BIT 6       BLOCK INPUTS TO UPLINK CELL
#
#       BIT 7       DOWNLINK TELEMETRY WORD ORDER CODE BIT
#
#       BIT 8       RHC COUNTER ENABLE (READ HAND CONTROLLER ANGLES)
#
#       BIT 9       START RHC READ INTO COUNTERS IF BIT 8 SET
#
#       BIT 10      TEST ALARMS, TEST DSKY LIGHTS
#
#       BIT 11      ENABLE STANDBY
#
#       BIT 12      RESET TRAP 31-A    ALWAYS APPEAR TO BE SET TO 0
#
#       BIT 13      RESET TRAP 31-B    ALWAYS APPEAR TO BE SET TO 0
#
#       BIT 14      RESET TRAP 32      ALWAYS APPEAR TO BE SET TO 0
#
#       BIT 15      ENABLE T6 RUPT
#

#     CHANNEL 14    CHAN14; OUTPUT CHANNEL; USED TO CONTROL COMPUTER COUNTER CELLS (CDU,GYRO,SPACECRAFT FUNC.
#
#       BIT 1       OUTLINK ACTIVITY (NOT USED)
#
#       BIT 2       ALTITUDE RATE OR ALTITIDE SELECTOR
#
#       BIT 3       ALTITUDE METER ACTIVITY
#
#       BIT 4       THRUST DRIVE ACTIVITY FOR DESCENT ENGINE
#
#       BIT 5       SPARE
#
#       BIT 6       GYRO ENABLE POWER FOR PULSES
#
#       BIT 7       GYRO SELECT B    PAIR OF BITS IDENTIFIES AXIS OF -
#       BIT 8       GYRO SELECT A    GYRO SYSTEM TO BE TORQUED.
#
#       BIT 9       GYRO TORQUING COMMAND IN NEGATIVE DIRECTION
#

## Page 73
#       BIT 10      GYRO ACTIVITY
#
#       BIT 11      DRIVE CDU S
#
#       BIT 12      DRIVE CDU T
#
#       BIT 13      DRIVE CDU Z
#
#       BIT 14      DRIVE CDU Y
#
#       BIT 15      DRIVE CDU X
#

#     CHANNEL 15    MNKEYIN; INPUT CHANNEL;KEY CODE INPUT FROM KEYBOARD OF DSKY, SENSED BY PROGRAM WHEN
#                   PROGRAM INTERRUPT #5 IS RECEIVED. USES BITS 5-1
#

#     CHANNEL 16    NAVKEYIN; INPUT CHANNEL; OPTICS MARK INFORMATION AND NAVIGA ION PANEL DSKY (CM) OR THRUST
#                   CONTROL (LM) SENSED BY PROGRAM WHEN PROGRAM INTER-RUPT #6 IS RECEIVED. USES BITS 3-7 ONLY.
#
#       BIT 1       NOT ASSIGNED
#
#       BIT 2       NOT ASSIGNED
#
#       BIT 3       OPTICS X-AXIS MARK SIGNAL FOR ALIGN OPTICAL TSCOPE
#
#       BIT 4       OPTICS Y-AXIS MARK SIGNAL FOR AOT
#
#       BIT 5       OPTICS MARK REJECT SIGNAL
#
#       BIT 6       DESCENT+ ; CREW DESIRED SLOWING RATE OF DESCENT
#
#       BIT 7       DESCENT- ; CREW DESIRED SPEEDING UP RATE OF D'CENT
#

#     NOTE: ALL BITS IN CHANNELS 30-33 ARE INVERTED AS SENSED BY THE PROGRAM, SO THAT A VALUE OF ZERO MEANS
#     THAT THE INDICATED SIGNAL IS PRESENT.
#

#     CHANNEL 30    INPUT CHANNEL
#
#       BIT 1       ABORT WITH DESCENT STAGE
#
#       BIT 2          UNUSED
#
#       BIT 3       ENGINE ARMED SIGNAL
#
#       BIT 4       ABORT WITH ASCENT ENGINE STAGE
#
#       BIT 5       AUTO THROTTLE; COMPUTER CONTROL OF DESCENT ENGINE

## Page 74
#       BIT 6       DISPLAY INERTIAL DATA
#
#       BIT 7       RR CDU FAIL
#
#       BIT 8       SPARE
#
#       BIT 9       IMU OPERATE WITH NO MALFUNCTION
#
#       BIT 10      LM COMPUTER (NOT AGS) HAS CONTROL OF LM
#
#       BIT 11      IMU CAGE COMMAND TO DRIVE IMU GIMBAL ANGLES TO 0.
#
#       BIT 12      IMU CDU FAIL (MALFUNCTION OF IMU CDU,S)
#
#       BIT 13      IMU FAIL (MALFUNCTION OF IMU STABILIZATION LOOPS)
#
#       BIT 14      ISS TURN ON REQUESTED
#
#       BIT 15      TEMPERATURE OF STABLE MEMBER WITHIN DESIGN LIMITS
#

#     CHANNEL 31    INPUT CHANNEL; BITS ASSOCIATED WITH THE ATTITUDE  CONTROLLER, TRANSLATIONAL CONTROLLER,
#                   AND SPACECRAFT ATTITUDE CONTROL; USED BY RCS DAP
#
#       BIT 1       ROTATION (BY RHC) COMMANDED IN POSITIVE PITCH DIRECTION; MUST BE IN MINIMUM IMPULSE MODE.
#                   ALSO POSITIVE ELEVATION CHANGE FOR LANDING POINT  DESIGNATOR
#
#       BIT 2       AS BIT 1 EXCEPT NEGATIVE PITCH AND ELEVATION
#
#       BIT 3       ROTATION (BY RHC) COMMANDED IN POSITIVE YAW DIRECTION; MUST BE IN MINUMUM IMPULSE MODE.
#
#       BIT 4       AS BIT 3 EXCEPT NEGATIVE YAW
#
#       BIT 5       ROTATION (BY RHC) COMMANDED IN POSITIVE ROLL DIRECTION; MUST BE IN MINIMUM IMPULSE MODE.
#                   ALSO POSITIVE AZIMUTH CHANGE FOR LANDING POINT DESIGNATOR
#
#       BIT 6       AS BIT 5 EXCEPT NEGATIVE ROLL AND AZIMUTH
#
#       BIT 7       TRANSLATION IN +X DIRECTION COMMANDED BY THC
#
#       BIT 8       TRANSLATION IN -X DIRECTION COMMANDED BY THC
#
#       BIT 9       TRANSLATION IN +Y DIRECTION COMMANDED BY THC
#
#       BIT 10      TRANSLATION IN -Y DIRECTION COMMANDED BY THC
#
#       BIT 11      TRANSLATION IN +Z DIRECTION COMMANDED BY THC
#
#       BIT 12      TRANSLATION IN -Z DIRECTION COMMANDED BY THC

## Page 75
#
#       BIT 13      ATTITUDE HOLD MODE ON SCS MODE CONTROL SWITCH
#
#       BIT 14      AUTO STABILIZATION OF ATTITUDE ON SCS MODE SWITCH
#
#       BIT 15      ATTITUDE CONTROL OUT OF DETENT (RHC NOT IN NEUTRAL
#

#     CHANNEL 32       INPUT CHANNEL.
#
#       BIT 1          THRUSTERS 2 & 4 DISABLED BY CREW
#
#       BIT 2          THRUSTERS 5 & 8 DISABLED BY CREW
#
#       BIT 3          THRUSTERS 1 & 3 DISABLED BY CREW
#
#       BIT 4          THRUSTERS 6 & 7 DISABLED BY CREW
#
#       BIT 5          THRUSTERS 14 & 16 DISABLED BY CREW
#
#       BIT 6          THRUSTERS 13 & 15 DISABLED BY CREW
#
#       BIT 7          THRUSTERS 9  & 12 DISABLED BY CREW
#
#       BIT 8          THRUSTERS 10 & 11 DISABLED BY CREW
#
#       BIT 9          DESCENT ENGINE GIMBALS DISABLED BY CREW
#
#       BIT 10         APPARENT DESCENT ENGINE GIMBAL FAILURE
#
#       BIT 14      INDICATES PROCEED KEY IS DEPRESSED
#

#     CHANNEL 33    CHAN33; INPUT CHANNEL; FOR HARDWARE STATUS AND COMMAND INFORMATION. BITS 15-11 ARE FLIP-
#                   FLOP BITS RESET BY A CHANNEL "WRITE" COMMAND THAT ARE RESET BY A RESTART & BY T4RUPT LOOP.
#
#       BIT 1       SPARE
#
#       BIT 2       RR AUTO-POWER ON
#
#       BIT 3       RR RANGE LOW SCALE
#
#       BIT 4       RR DATA GOOD
#
#       BIT 5       LR RANGE DATA GOOD
#
#       BIT 6       LR POS1
#
#       BIT 7       LR POS2
#

## Page 76
#       BIT 8       LR VEL DATA GOOD
#
#       BIT 9       LR RANGE LOW SCALE
#
#       BIT 10      BLOCK UPLINK INPUT
#
#       BIT 11      UPLINK TOO FAST
#
#       BIT 12      DOWNLINK TOO FAST
#
#       BIT 13      PIPA FAIL
#
#       BIT 14      WARNING OF REPEATED ALARMS: RESTART,COUNTER FAIL, VOLTAGE FAIL,AND SCALAR DOUBLE.
#
#       BIT 15      LGC OSCILLATOR STOPPED
#

#     CHANNEL 34    DNT M1; OUTPUT CHANNEL; DOWNLINK 1  FIRST OF TWO WORDS SERIALIZATION.
#     CHANNEL 35    DNT M2; OUTPUT CHANNEL DOWNLINK 2 SOCOND OF TWO   WORDS SERIALIZATION.