* Update GROUND_TRACKING_DETERMINATION_PROGRAM.agc * Apply suggestions from code review * Recommended character change and spacing changes * Apply suggestions from code review Co-authored-by: James Harris <wopian@wopian.me>
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@ -27,57 +27,61 @@
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# 16:27 JULY 14, 1969
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# Page 654
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# GROUND TRACKING DETERMINATION PROGRAM -- P21
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# GROUND TRACKING DETERMINATION PROGRAM P21
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# PROGRAM DESCRIPTION
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# MOD NO -- 1
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# MOD BY -- N. M. NEVILLE
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# MOD NO - 1
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# MOD BY - N.M.NEVILLE
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# FUNCTIONAL DECRIPTION-
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#
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# FUNCTIONAL DESCRIPTION --
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# TO PROVIDE THE ASTRONAUT DETAILS OF THE LM OR CSM GROUND TRACK WITHOUT
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# THE NEED FOR GROUND COMMUNICATION (REQUESTED BY DSKY).
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# CALLING SEQUENCE -
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#
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# CALLING SEQUENCE --
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# ASTRONAUT REQUEST THROUGH DSKY V37E21E
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# SUBROUTINES CALLED-
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#
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# SUBROUTINES CALLED --
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# GOPERF4
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# GOFLASH
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# THISPREC
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# OTHPREC
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# LAT-LONG
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# NORMAL EXIT MODES-
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#
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# NORMAL EXIT MODES --
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# ASTRONAUT REQUEST THROUGH DSKY TO TERMINATE PROGRAM V34E
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# ASTRONAUT REQUEST TROUGH DSKY TO TERMINATE PROGRAM V34E
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# ALARM OR ABORT EXIT MODES-
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#
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# ALARM OR ABORT EXIT MODES --
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# NONE
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# OUTPUT -
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#
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# OUTPUT --
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# OCTAL DISPLAY OF OPTION CODE AND VEHICLE WHOSE GROUND TRACK IS TO BE
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# COMPUTED
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# OPTION CODE 00002
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# THIS 00001
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# OTHER 00002
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# DECIMAL DISPLAY OF TIME TO BE INTEGRATED TO HOURS, MINUTES, SECONDS
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# DECIMAL DISPLAY OF TIME TO BE INTEGRATED TO HOURS , MINUTES , SECONDS
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# DECIMAL DISPLAY OF LAT,LONG,ALT
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#
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# ERASABLE INITIALIZATION REQUIRED
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# AX0 2DEC 4.652459653 E-5 RADIANS $68-69 CONSTANTS*
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# -AY0 2DEC 2.137535898 E-5 RADIANS
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# AZ0 2DEC .7753206164 REVOLUTIONS
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# FOR LUNAR ORBITS 504LM VECTOR IS NEEDED:
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#
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# AXO 2DEC 4.652459653 E-5 RADIANS %68-69 CONSTANTS"
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#
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# -AYO 2DEC 2.147535898 E-5 RADIANS
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#
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# AZO 2DEC .7753206164 REVOLUTIONS
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# FOR LUNAR ORBITS 504LM VECTOR IS NEEDED
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#
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# 504LM 2DEC -2.700340600 E-5 RADIANS
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#
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# 504LM _2 2DEC -7.514128400 E-4 RADIANS
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#
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# 504LM _4 2DEC _2.553198641 E-4 RADIANS
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#
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# NONE
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#
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# DEBRIS
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#
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# Page 655
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# CENTRALS -- A,Q,L
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# OTHER -- THOSE USED BY THE ABOVE LISTED SUBROUTINES
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# SEE LEMPREC, LAT-LONG
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# CENTRALS-A,Q,L
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# OTHER-THOSE USED BY THE ABOVE LISTED SUBROUTINES
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# SEE LEMPREC,LAT-LONG
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SBANK= LOWSUPER # FOR LOW 2CADR'S.
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BANK 33
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@ -87,7 +91,7 @@
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EBANK= P21TIME
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COUNT* $$/P21
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PROG21 CAF ONE
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TS OPTION2 # ASSUMED VEHICLE IS LM, R2 = 00001
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TS OPTION2 # ASSUMED VEHICLE IS LM , R2 = 00001
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CAF BIT2 # OPTION 2
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TC BANKCALL
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CADR GOPERF4
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@ -103,26 +107,26 @@ P21PROG1 CAF V6N34 # LOAD DESIRED TIME OF LAT-LONG.
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TC INTPRET
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DLOAD
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DSPTEM1
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STCALL TDEC1 # INTEG TO TIME SPECIFIED IN TDEC
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STCALL TDEC1 # INTEGRATE TO TIME SPECIFIED IN TDEC
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INTSTALL
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BON CLEAR
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P21FLAG
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P21CONT # ON -- RECYCLE USING BASE VECTOR
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VINTFLAG # OFF -- 1ST PASS CALL BASE VECTOR
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P21CONT # ON---RECYCLE USING BASE VECTOR
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VINTFLAG # OFF--IST PASS CALL BASE VECTOR
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SLOAD SR1
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OPTION2
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BHIZ SET
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+2 # ZERO -- THIS VEHICLE (LM)
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VINTFLAG # ONE -- OTHER VEHICLE (CM)
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+2 # ZERO--THIS VEHICLE(LM)
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VINTFLAG # ONE--OTHER VEHICLE(CM)
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CLEAR CLEAR
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DIM0FLAG
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INTYPFLG # PRECISION
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CALL
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INTEGRV # CALCULATE
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GOTO # AND
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P21VSAVE # SAVE BASE VECTOR
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GOTO # -AND
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P21VSAVE # -SAVE BASE VECTOR
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P21CONT VLOAD
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P21BASER # RECYCLE -- INTEG FROM BASE VECTOR
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P21BASER # RECYCLE--INTEG FROM BASE VECTOR
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STOVL RCV # --POS
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# Page 656
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P21BASEV
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@ -134,12 +138,12 @@ P21CONT VLOAD
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MOONFLAG
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SLOAD BZE
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P21ORIG
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+3 # ZERO = EARTH
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SET # ---2 = MOON
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+3 # ZERO=EARTH
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SET # ---2=MOON
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MOONFLAG
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+3 CALL
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INTEGRVS
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P21VSAVE DLOAD # SAVE CURRENT BASE VECTOR
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P21VSAVE DLOAD # SAVE CURRENT BASEVECTOR
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TAT
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STOVL P21TIME # --TIME
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RATT1
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@ -154,9 +158,9 @@ P21VSAVE DLOAD # SAVE CURRENT BASE VECTOR
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VATT # U(R).V
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DDV ASIN # U(R).U(V)
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P21VEL
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STORE P21GAM # SIN-1 U(R).U(V) , -90 TO +90
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STORE P21GAM # SIN-1 U(R).U(V) , -90 TO &90
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SXA,2 SLOAD
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P21ORIG # 0 = EARTH
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P21ORIG # 0=EARTH
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OPTION2
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SR1 BHIZ
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+3
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@ -202,4 +206,3 @@ P21DSP CLEAR SLOAD # GENERATE DISPLAY DATA
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V06N43 VN 00643
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V6N34 VN 00634
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K.01 2DEC .01
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