Apollo-11/Luminary099/R60_62.agc

# Copyright:	Public domain.
# Filename:	R60_R62.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:	Ron Burkey <info@sandroid.org>.
# Website:	www.ibiblio.org/apollo.
# Pages:	472-485
# Mod history:	2009-05-17 RSB	Adapted from the corresponding
#				Luminary131 file, using page
#				images from Luminary 1A.
#
# 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 2021112-061
#	16:27 JULY 14, 1969

# Page 472
# MOD NO: 0			DATE: 1 MAY 1968
# MOD BY: DIGITAL DEVEL GROUP	LOG SECTION R60,R62
#
# FUNCTIONAL DESCRIPTION:
#
# CALLED AS A GENERAL SUBROUTINE TO MANEUVER THE LM TO A SPECIFIED
# ATTITUDE.
#
# 1. IF THE 3-AXIS FLAG IS NOT SET THE FINAL CDU ANGLES ARE
# CALCULATED (VECPOINT).
#
# 2. THE FDAI BALL ANGLES (NOUN 18) ARE CALCULATED (BALLANGS).
#
# 3. REQUEST FLASHING DISPLAY V50 N18 PLEASE PERFORM AUTO MANEUVER.
#
# 4. IF PRIORITY DISPLAY FLAG IS SET DO A PHASECHANGE. THEN AWAIT
# ASTRONAUT RESPONSE.
#
# 5. DISPLAY RESPONSE RETURNS:
#
#     A. ENTER - RESET 3-AXIS FLAG AND RETURN TO CLIENT.
#
#     B. TERMINATE - IF IN P00 GO TO STEP 5A. OTHERWISE CHECK IF R61 IS
#	 THE CALLING PROGRAM. IF IN R61 AN EXIT IS MADE TO GOTOV56. IF
#	 NOT IN R61 AN EXIT IS DONE VIA GOTOPOOH.
#
#     C. PROCEED - CONTINUE WITH PROGRAM AT STEP 6.
#
# 6. IF THE 3-AXISFLAG IS NOT SET, THE FINAL CDU ANGLES ARE CALCULATED
#    (VECPOINT).
#
# 7. THE FDAI BALL ANGLES (NOUN 18) ARE CALCULATED (BALLANGS).
#
# 8. IF THE G+N SWITCH IS NOT SET GO BACK TO STEP 3.
#
# 9. IF THE AUTO SWITCH IS NOT SET GO BACK TO STEP 3.
#
# 10. NONFLASHING DISPLAY V06N18 (FDAI ANGLES).
#
# 11. DO A PHASECHANGE.
#
# 12. DO A MANEUVER CALCULATION AND ICDU DRIVE ROUTINE TO ACHIEVE FINAL
#
#     GIMBAL ANGLES (GOMANUR).
# 13. AT END OF MANEUVER GO TO STEP 3.
#
#	   IF SATISFACTORY MANEUVER STEP 5A EXITS R60.
#	   FOR FURTHER ADJUSTMENT OF THE VEHICLE ATTITUDE ABOUT THE
#	   DESIRED VECTOR, THE ROUTINE MAY BE PERFORMED AGAIN STARTING AT
# Page 473
#	   STEP 5C.
#
# CALLING SEQUENCE:  TC BANKCALL
#		     CADR R60LEM
#
# ERASABLE INITIALIZATION REQUIRED : SCAXIS, POINTVSM (FOR VECPOINT)
#				     3AXISFLG.
#
# SUBROUTINES CALLED: VECPOINT, BALLANGS, GOPERF2R, LINUS, GODSPER,
#		     GOMANUR, DOWNFLAG, PHASCHNG, UPFLAG
#
# NORMAL EXIT MODES: CAE TEMPR60   (CALLERS RETURN ADDRESS)
#		     TC  BANKJUMP
#
# ALARMS: NONE
#
# OUTPUT: NONE
#
# DEBRIS: CPHI, CTHETA, CPSI, 3AXISFLG, TBASE2

		BANK	34
		SETLOC	MANUVER
		BANK

		EBANK=	TEMPR60

		COUNT*	$$/R06
R60LEM		TC	MAKECADR
		TS	TEMPR60

REDOMANN	CAF	3AXISBIT
		MASK	FLAGWRD5	# IS 3-AXIS FLAG SET
		CCS	A
		TCF	TOBALL		# YES
		TC	INTPRET
		CALL
			VECPOINT	# TO COMPUTE FINAL ANGLES
		STORE	CPHI		# STORE FINAL ANGLES - CPHI,CTHETA,CPSI
		EXIT

TOBALL		TC	BANKCALL
		CADR	BALLANGS	# TO CONVERT ANGLES TO FDAI
TOBALLA		CAF	V06N18
		TC	BANKCALL
		CADR	GOPERF2R	# DISPLAY PLEASE PERFORM AUTO MANEUVER
		TC	R61TEST
		TC	REDOMANC	# PROCEED
		TC	ENDMANU1	# ENTER I.E. FINISHED WITH R60
# Page 474
		TC	CHKLINUS	# TO CHECK FOR PRIORITY DISPLAYS
		TC	ENDOFJOB

REDOMANC	CAF	3AXISBIT
		MASK	FLAGWRD5	# IS 3-AXIS FLAG SET
		CCS	A
		TCF	TOBALLC		# YES
		TC	INTPRET
		CALL
			VECPOINT	# TO COMPUTE FINAL ANGLES
		STORE	CPHI		# STORE ANGLES
		EXIT

TOBALLC		TC	BANKCALL
		CADR	BALLANGS	# TO CONVERT ANGLES TO FDAI
		TC	G+N,AUTO	# CHECK AUTO MODE
		CCS	A
		TCF	TOBALLA		# NOT AUTO, GO REREQUEST AUTO MANEUVER.

AUTOMANV	CAF	V06N18		# STATIC DISPLAY DURING AUTO MANEUVER
		TC	BANKCALL
		CADR	GODSPR
		TC	CHKLINUS	# TO CHECK FOR PRIORITY DISPLAYS

STARTMNV	TC	BANKCALL	# PERFORM MANEUVER VIA KALCMANU
		CADR	GOMANUR

ENDMANUV	TCF	TOBALLA		# FINISHED MANEUVER.
ENDMANU1	TC	DOWNFLAG	# RESET 3-AXIS FLAG
		ADRES	3AXISFLG
		CAE	TEMPR60
		TC	BANKJUMP

CHKLINUS	CS	FLAGWRD4
		MASK	PDSPFBIT	# IS PRIORITY DISPLAY FLAG SET?
		CCS	A
		TC	Q		# NO - EXIT
		CA	Q
		TS	MPAC +2		# SAVE RETURN
		CS	THREE		# OBTAIN LOCATION FOR RESTART
		AD	BUF2		# HOLDS Q OF LAST DISPLAY
		TS	TBASE2

		TC	PHASCHNG
		OCT	00132

		CAF	BIT7
		TC	LINUS		# GO SET BITS FOR PRIORITY DISPLAY
		TC	MPAC +2

# Page 475
RELINUS		CAF	PRIO26		# RESTORE ORIGINAL PRIORITY
		TC	PRIOCHNG

		CAF	TRACKBIT	# DON'T CONTINUE R60 UNLESS TRACKFLAG ON.
		MASK	FLAGWRD1
		CCS	A
		TCF	RER60

		CAF	RNDVZBIT	# IS IT P20?
		MASK	FLAGWRD0
		CCS	A
		TC	+4		# YES
		TC	PHASCHNG	# NO, MUST BE P25, SET 2.11 SPOT
		OCT	40112

		TC	ENDOFJOB

		TC	PHASCHNG	# SET 2.7 SPOT FOR P20
		OCT	40072

		TC 	ENDOFJOB

RER60		TC	UPFLAG		# SET PRIO DISPLAY FLAG AFTER RESTART
		ADRES	PDSPFLAG

		TC	TBASE2

R61TEST		CA	MODREG		# IF WE ARE IN P00 IT MUST BE V49 OR V89
		EXTEND
		BZF	ENDMANU1	# THUS WE GO TO ENDEXT VIA USER

		CA	FLAGWRD4	# ARE WE IN R61  (P20 OR P25)
		MASK	PDSPFBIT
		EXTEND
		BZF	GOTOPOOH	# NO
		TC	GOTOV56		# YES

BIT14+7		OCT	20100
OCT203		OCT	203
V06N18		VN	0618

# SUBROUTINE TO CHECK FOR G+N CONTROL. AUTO STABILIZATION
#
# RETURNS WITH C(A) = +  IF NOT SET FOR G+N, AUTO
# RETURNS WITH C(A) = +0 IF SWITCHES ARE SET

G+N,AUTO	EXTEND
		READ	CHAN30
		MASK	BIT10
		CCS	A
		TC	Q		# NOT IN G+N  C(A) = +
# Page 476
ISITAUTO	EXTEND			# CHECK FOR AUTO MODE
		READ	CHAN31
		MASK	BIT14
		TC	Q		# (+) = NOT IN AUTO,  (+0) = AOK

# Page 477
# PROGRAM DESCRIPTION BALLANGS
# MOD NO.	  LOG SECTION  R60,R62
#
# WRITTEN BY RAMA M.AIYAWAR
# FUNCTIONAL DESCRIPTION
#
# COMPUTES LM FDAI BALL DISPLAY ANGLES
# CALLING SEQUENCE
#
#		TC	BALLANGS
# NORMAL EXIT MODE
#
#		TC	BALLEXIT	# (SAVED Q)
#
# ALARM OR EXIT MODE  NIL
# SUBROUTINES CALLED
#		CD*TR*G
#		ARCTAN
#
# INPUT
#
# CPHI,CTHETA,CPSI  ARE  THE ANGLES CORRESPONDING TO AOG,AIG,AMG. THEY ARE
# SP,2S COMPLIMENT SCALED TO HALF REVOLUTION.
# OUTPUT
#
# FDAIX,FDAIY,FDAIZ ARE THE REQUIRED BALL ANGLES SCALED TO HALF REVOLUTION
# SP,2S COMPLIMENT.
# THESE ANGLES WILL BE DISPLAYED AS DEGREES AND HUNDREDTHS. IN THE ORDER  ROLL, PITCH, YAW, USING NOUNS 18 & 19.
#
# ERASABLE INITIALIZATION REQUIRED
#
# CPHI,CTHETA,CPSI EACH A SP REGISTER
# DEBRIS
#
# A,L,Q,MPAC,SINCDU,COSCDU,PUSHLIS,BALLEXIT
#
#
# NOMENCLATURE:	 CPHI, CTHETA, & CPSI REPRESENT THE OUTER, INNER, & MIDDLE GIMBAL ANGLES, RESPECTIVELY; OR
# EQUIVALENTLY, CDUX, CDUY, & CDUZ.
#
# NOTE:  ARCTAN CHECKS FOR OVERFLOW AND SHOULD BE ABLE TO HANDLE ANY SINGULARITIES.

		SETLOC	BAWLANGS
		BANK

		COUNT*	$$/BALL
BALLANGS	TC	MAKECADR
		TS	BALLEXIT
		CA	CPHI
# Page 478
		TS	CDUSPOT +4
		CA	CTHETA
		TS	CDUSPOT
		CA	CPSI
		TS	CDUSPOT +2

		TC	INTPRET
		SETPD	CALL
			0D
			CD*TR*G

		DLOAD	DMP
			SINCDUX		# SIN (OGA)
			COSCDUZ		# COS (MGA)

		SL1	DCOMP		# SCALE
		ARCSIN	PDDL		# YAW = ARCSIN(-SXCZ) INTO 0 PD
			SINCDUZ
		STODL	SINTH		# (SINTH = 18D IN PD)
			COSCDUZ
		DMP	SL1		# RESCALE
			COSCDUX
		STCALL	COSTH		# (COSTH= 16D IN PD)
			ARCTAN
		PDDL	DMP		# ROLL = ARCTAN(SZ/CZCX) INTO 2 PD
			SINCDUZ
			SINCDUX
		SL2	PUSH		# SXSZ INTO 4 PD
		DMP	PDDL		# SXSZCY INTO 4 PD
			COSCDUY
		DMP	PDDL		# SXSZSY INTO 6 PD
			SINCDUY
			COSCDUX
		DMP	SL1		# CXCY
			COSCDUY
		DSU	STADR		# PULL UP FROM 6 PD
		STODL	COSTH		# COSTH = CXCY - SXSZSY
			SINCDUY
		DMP	SL1
			COSCDUX		# CXSY
		DAD	STADR		# PULL UP FROM 4 PD
		STCALL	SINTH		# SINTH = CXSY + SXSZCY
			ARCTAN		# RETURNS WITH D(MPAC) = PITCH
		PDDL	VDEF		# PITCH INTO 2 PD, ROLL INTO MPAC FROM 2PD
		RTB			# VDEF MAKES V(MPAC) = ROLL, PITCH, YAW
			V1STO2S
		STORE	FDAIX		# MODE IS TP
		EXIT

ENDBALL		CA	BALLEXIT

# Page 479
		TC	BANKJUMP

# Page 480
# PROGRAM DESCRIPTION - VECPOINT
#
#
#	   THIS INTERPRETIVE SUBROUTINE MAY BE USED TO POINT A SPACECRAFT AXIS IN A DESIRED DIRECTION.  THE AXIS
# TO BE POINTED MUST APPEAR AS A HALF UNIT DOUBLE PRECISION VECTOR IN SUCCESSIVE LOCATIONS OF ERASABLE MEMORY
# BEGINNING WITH THE LOCATION CALLED SCAXIS.  THE COMPONENTS OF THIS VECTOR ARE GIVEN IN SPACECRAFT COORDINATES.
# THE DIRECTION IN WHICH THIS AXIS IS TO BE POINTED MUST APPEAR AS A HALF UNIT DOUBLE PRECISION VECTOR IN
# SUCCESSIVE LOCATIONS OF ERASABLE MEMORY BEGINNING WITH THE ADDRESS CALLED POINTVSM.  THE COMPONENTS OF THIS
# VECTOR ARE GIVEN IN STABLE MEMBER COORDINATES.  WITH THIS INFORMATION VECPOINT COMPUTES A SET OF THREE GIMBAL
# ANGLES (2S COMPLEMENT) CORESPONDING TO THE CROSS-PRODUCT ROTATION BETWE EN SCAXIS AND POINTVSM AND STORES THEM
# IN T(MPAC) BEFORE RETURNING TO THE CALLER.
#	   THIS ROTATION, HOWEVER, MAY BRING THE S/C INTO GIMBAL LOCK.  WHEN POINTING A VECTOR IN THE Y-Z PLANE,
# THE TRANSPONDER AXIS, OR THE AOT FOR THE LEM, THE PROGRAM WILL CORRECT THIS PROBLEM BY ROTATING THE CROSS-
# PRODUCT ATTITUDE ABOUT POINTVSM BY A FIXED AMOUNT SUFFICIENT TO ROTATE THE DESIRED S/C ATTITUDE OUT OF GIMBAL
# LOCK.  IF THE AXIS TO BE POINTED IS MORE THAN 40.6 DEGREES BUT LESS THAN 60.5 DEG FROM THE +X (OR-X) AXIS,
# THE ADDITIONAL ROTATION TO AVOID GIMAL LOCK IS 35 DEGREES.  IF THE AXIS IS MORE THAN 60.5 DEGEES FROM +X (OR -X)
# THE ADDITIONAL ROTATION IS 35 DEGREES.  THE GIMBAL ANGLES CORRESPONDING TO THIS ATTITUDE ARE THEN COMPUTED AND
# STORED AS 2S COMPLIMENT ANGLES IN T(MPAC) BEFORE RETURNING TO THE CALLER.
#	   WHEN POINTING THE X-AXIS, OR THE THRUST VECTOR, OR ANY VECTOR WITHIN 40.6 DEG OF THE X-AXIS, VECPOINT
# CANNOT CORRECT FOR A CROSS-PRODUCT ROTATION INTO GIMBAL LOCK.  IN THIS CASE A PLATFORM REALIGNMENT WOULD BE
# REQUIRED TO POINT THE VECTOR IN THE DESIRED DIRECTION.  AT PRESENT NO INDICATION IS GIVEN FOR THIS SITUATION
# EXCEPT THAT THE FINAL MIDDLE GIMBAL ANGLE IN MPAC +2 IS GREATER THAN 59 DEGREES.
#
#	   CALLING SEQUENCE -
#	       1) LOAD SCAXIS, POINTVSM
#	       2) CALL
#		       VECPOINT
#
#	   RETURNS WITH
#
#	       1) DESIRED OUTER  GIMBAL ANGLE IN MPAC
#	       2) DESIRED INNER  GIMBAL ANGLE IN MPAC +1
#	       3) DESIRED MIDDLE GIMBAL ANGLE IN MPAC +2
#
#	   ERASABLES USED -
#
#	       1) SCAXIS	   6
#	       2) POINTVSM	   6
#	       3) MIS		  18
#	       4) DEL		  18
#	       5) COF		   6
#	       6) VECQTEMP	   1
#	       7) ALL OF VAC AREA 43
#
#			TOTAL	  99

		SETLOC	VECPT
		BANK
# Page 481
		COUNT*	$$/VECPT

		EBANK=	BCDU

VECPNT1		STQ	BOV		# THIS ENTRY USES DESIRED CDUS
			VECQTEMP	# NOT PRESENT-ENTER WITH CDUD'S IN MPAC
			VECPNT2
VECPNT2		AXC,2	GOTO
			MIS
			STORANG
VECPOINT	STQ	BOV		# SAVE RETURN ADDRESS
			VECQTEMP
			VECLEAR		# AND CLEAR OVFIND
VECLEAR		AXC,2	RTB
			MIS		# READ THE PRESENT CDU ANGLES AND
			READCDUK	# STORE THEM IN PD25, 26, 27
STORANG		STCALL	25D
			CDUTODCM	# S/C AXES TO STABLE MEMBER AXES (MIS)
		VLOAD	VXM
			POINTVSM	# RESOLVE THE POINTING DIRECTION VF INTO
			MIS		# INITIAL S/C AXES ( VF = POINTVSM)
		UNIT
		STORE	28D
					# PD 28 29 30 31 32 33
		VXV	UNIT		# TAKE THE CROSS PRODUCT VF X VI
			SCAXIS		# WHERE VI = SCAXIS
		BOV	VCOMP
			PICKAXIS
		STODL	COF		# CHECK MAGNITUDE
			36D		# OF CROSS PRODUCT
		DSU	BMN		# VECTOR, IF LESS
			DPB-14		# THAN B-14 ASSUME
			PICKAXIS	# UNIT OPERATION
		VLOAD	DOT		#	   INVALID.
			SCAXIS
			28D
		SL1	ARCCOS
COMPMATX	CALL			# NOW COMPUTE THE TRANSFORMATION FROM
			DELCOMP		# FINAL S/C AXES TO INITIAL S/C AXES  MFI
		AXC,1	AXC,2
			MIS		# COMPUTE THE TRANSFORMATION FROM FINAL
			KEL		# S/C AXES TO STABLE MEMBER AXES
		CALL			# MFS = MIS MFI
			MXM3		# (IN PD LIST)

		DLOAD	ABS
			6		# MFS6 = SIN(CPSI)		       $2
		DSU	BMN
			SINGIMLC	# = SIN(59 DEGS)		       $2
			FINDGIMB	# /CPSI/ LESS THAN 59 DEGS
# Page 482
					# I.E. DESIRED ATTITUDE NOT IN GIMBAL LOCK

		DLOAD	ABS		# CHECK TO SEE IF WE ARE POINTING
			SCAXIS		# THE THRUST AXIS
		DSU	BPL
			SINVEC1		# SIN 49.4 DEGS			       $2
			FINDGIMB	# IF SO, WE ARE TRYING TO POINT IT INTO
		VLOAD			# GIMBAL LOCK, ABORT COULD GO HERE
		STADR
		STOVL	MIS +12D
		STADR			# STORE MFS (IN PD LIST) IN MIS
		STOVL	MIS +6
		STADR
		STOVL	MIS
			MIS +6		# INNER GIMBAL AXIS IN FINAL S/C AXES
		BPL	VCOMP		# LOCATE THE IG AXIS DIRECTION CLOSEST TO
			IGSAMEX		# FINAL X S/C AXIS

IGSAMEX		VXV	BMN		# FIND THE SHORTEST WAY OF ROTATING THE
			SCAXIS		# S/C OUT OF GIMBAL LOCK BY A ROTATION
			U=SCAXIS	# ABOUT +- SCAXIS, I.E. IF (IG (SGN MFS3)
					# X SCAXIS . XF) LESS THAN 0, U = SCAXIS
					# OTHERWISE U = -SCAXIS

		VLOAD	VCOMP
			SCAXIS
		STCALL	COF		# ROTATE ABOUT -SCAXIS
			CHEKAXIS
U=SCAXIS	VLOAD
			SCAXIS
		STORE	COF		# ROTATE ABOUT + SCAXIS
CHEKAXIS	DLOAD	ABS
			SCAXIS		# SEE IF WE ARE POINTING THE AOT
		DSU	BPL
			SINVEC2		# SIN 29.5 DEGS			       $2
			PICKANG1	# IF SO, ROTATE 50 DEGS ABOUT +- SCAXIS
		DLOAD	GOTO		# IF NOT, MUST BE POINTING THE TRANSPONDER
			VECANG2		# OR SOME VECTOR IN THE Y, OR Z PLANE
			COMPMFSN	# IN THIS CASE ROTATE 35 DEGS TO GET OUT
					# OF GIMBAL LOCK (VECANG2  $360)
PICKANG1	DLOAD
			VECANG1		# = 50 DEGS			     $ 360
COMPMFSN	CALL
			DELCOMP		# COMPUTE THE ROTATION ABOUT SCAXIS TO
		AXC,1	AXC,2		# BRING MFS OUT OF GIMBAL LOCK
			MIS
			KEL
		CALL			# COMPUTE THE NEW TRANSFORMATION FROM
			MXM3		# DESIRED S/C AXES TO STABLE MEMBER AXES
					# WHICH WILL ALIGN VI WITH VF AND AVOID
# Page 483
					# GIMBAL LOCK
FINDGIMB	AXC,1	CALL
			0		# EXTRACT THE COMMANDED CDU ANGLES FROM
			DCMTOCDU	# THIS MATRIX
		RTB	SETPD
			V1STO2S		# CONVERT TO 2:S COMPLEMENT
			0
		GOTO
			VECQTEMP	# RETURN TO CALLER

PICKAXIS	VLOAD	DOT		# IF VF X VI = 0,  FIND VF . VI
			28D
			SCAXIS
		BMN	TLOAD
			ROT180
			25D
		GOTO			# IF VF = VI, CDU DESIRED = PRESENT CDU
			VECQTEMP	# PRESENT CDU ANGLES

		BANK	35
		SETLOC	MANUVER1
		BANK
ROT180		VLOAD	VXV		# IF VF, VI ANTIPARALLEL, 180 DEG ROTATION
			MIS 	+6	# IS REQUIRED. Y STABLE MEMBER AXIS IN
			HIDPHALF	# INITIAL S/C AXES.
		UNIT	VXV		# FIND Y(SM) X X(I)
			SCAXIS		# FIND UNIT(VI X UNIT(Y(SM) X X(I)))
		UNIT	BOV		# I.E. PICK A VECTOR IN THE PLANE OF X(I),
			PICKX		# Y(SM) PERPENDICULAR TO VI
		STODL	COF
			36D		# CHECK MAGNITUDE
		DSU	BMN		# OF THIS VECTOR.
			DPB-14		# IF LESS THAN B-14,
			PICKX		# PICK X-AXIS.
		VLOAD
			COF
XROT		STODL	COF
			HIDPHALF
		GOTO
			COMPMATX
PICKX		VLOAD	GOTO		# PICK THE XAXIS IN THIS CASE
			HIDPHALF
			XROT
SINGIMLC	2DEC	.4285836003	# =SIN(59)		  $2

SINVEC1		2DEC	.3796356537	# =SIN(49.4)		  $2

SINVEC2		2DEC	.2462117800	# =SIN(29.5)		  $2

VECANG1		2DEC	.1388888889	# = 50 DEGREES			      $360
# Page 484
VECANG2		2DEC	.09722222222	# = 35 DEGREES			      $360

1BITDP		OCT	0		# KEEP THIS BEFORE DPB(-14)	 *********
DPB-14		OCT	00001
		OCT	00000

# Page 485
# ROUTINE FOR INITIATING AUTOMATIC MANEUVER VIA KEYBOARD (V49)

		BANK	34
		SETLOC	R62
		BANK
		EBANK=	BCDU

		COUNT*	$$/R62

R62DISP		EQUALS	R62FLASH

R62FLASH	CAF	V06N22		# FLASH V06N22 AND
		TC	BANKCALL	# ICDU ANGLES
		CADR	GOFLASH
		TCF	ENDEXT		# TERMINATE
		TCF	GOMOVE		# PROCEED
		TCF	R62FLASH	# ENTER

					# ASTRONAUT MAY LOAD NEW ICDUS AT THIS
					# POINT
GOMOVE		TC	UPFLAG		# SET FOR 3-AXIS MANEUVER
		ADRES	3AXISFLG

		TC	BANKCALL
		CADR	R60LEM
		TCF	ENDEXT		# END R62