AOTMARK.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: AOTMARK.agc
## Purpose: A section of Luminary revision 210.
## It is part of the source code for the Lunar Module's (LM)
## Apollo Guidance Computer (AGC) for Apollo 15-17.
## 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. 255-274
## Assembler: yaYUL
## Contact: Ron Burkey <info@sandroid.org>.
## Website: www.ibiblio.org/apollo/index.html
## Mod history: 2016-11-17 JL Created from Luminary131 version.
## 2016-11-23 HG Transcribed
## 2016-11-25 HG Fix label MARKREJ -> MKREJ
## operand NOVAK -> NOVAC
## GOMARKER-> GOMARKFR
## CMKCNTR -> XMKCNTR
## 2016-12-07 HG fix P00 -> POO
## 2016-12-11 HG Fix operation CS NOMKCNT -> CA NOMKCNT
## 2016-12-23 RSB Proofed comment text with octopus/ProoferComments
## and fixed all errors found.
## 2017-03-14 RSB Comment-text fixes identified in 5-way
## side-by-side diff of Luminary 69/99/116/131/210.
## Page 255
SETLOC AOTMARK1
BANK
EBANK= XYMARK
COUNT* $$/MARK
AOTMARK INHINT
CAF SIX # SEE IF EXT. VERB WORKING
MASK EXTVBACT
CCS A
TCF MKABORT # YES - ABORT
CAF BIT2 # NO-DISALLOW SOME EXTENDED VERB ACTION
ADS EXTVBACT # BIT2 RESET IN ENDMARK
MKVAC CCS VAC1USE # LOOK FOR A VAC AREA-DO ABORT IF
TCF MKVACFND # NONE AVAILABLE
CCS VAC2USE
TCF MKVACFND
CCS VAC3USE
TCF MKVACFND
CCS VAC4USE
TCF MKVACFND
CCS VAC5USE
TCF MKVACFND
DXCH BUF2
TC BAILOUT1 # ALL VAC AREAS OCCUPIED - ABORT.
OCT 31207
MKVACFND AD TWO
TS MARKSTAT # STORE VAC ADR INLOW 9 OF MARKSTAT
CAF ZERO
INDEX MARKSTAT
TS 0 -1 # ZERO IN VACUSE REG TO SHOW VAC OCCUPIED
CAF PRIO15
TC FINDVAC # SET UP JOB FOR GETDAT
EBANK= XYMARK
2CADR GETDAT
RELINT
TCF SWRETURN
MKABORT DXCH BUF2
TC BAILOUT1 # CONFLICT WITH EXTENDED VERB
OCT 31211
MKRELEAS CAF ZERO
XCH MARKSTAT # SET MARKSTAT TO ZERO
## Page 256
MASK LOW9 # PICK UP VAC AREA ADR
CCS A
INDEX A
TS 0 # SHOW MKVAC AREA AVAILABLE
CAF ONE
TC IBNKCALL
CADR GOODEND # GO WAKE UP CALLING JOB
KILLAOT CAF ZERO
TS EXTVBACT # TERMINATE AOTMARK-ALLOW EXT VERB
TC GOTOPOOH
## Page 257
# GETDAT ROUTINE
GETDAT CS MARKSTAT # SET BIT12 TO DISCOURAGE MARKRUPT
MASK BIT12 # BIT12 RESET AT GETMARK
ADS MARKSTAT
N71DISP CAF V01N71 # DISPLAY DETENT AND STAR CODE
TC BANKCALL
CADR GOMARKF
TCF KILLAOT # V34-DOES GOTOPOOH
TCF DODAT # V33-PROCEED-USE THIS STAR FOR MARKS
ENTERDAT TCF GETDAT # ENTER-REDISPLAY STAR CODE
DODAT CAF HIGH9 # PICK DETENT CODE FROM BITS7-9 OF AOTCODE
MASK AOTCODE # AND SEE IF CODE 1 TO 6
EXTEND
MP BIT9
TS XYMARK # STORE DETENT
EXTEND
BZMF GETDAT # COAS CALIBRATION CODE-NO GOOD HERE
AD NEG7 # SEE IF DETENT 7 FOR COAS
EXTEND
BZF CODE7
TCF CODE1TO6
CODE7 CAF V06N87* # CODE 7, COAS SIGHTING, GET OPTIC AXIS
TC BANKCALL # AZ AND EL OF SIGHTING DEVICE FROM ASTRO
CADR GOMARKF
TCF KILLAOT # V34-DOES GOTOPOOH
TCF +2 # PROCEED
TCF CODE7 # ON ENTER, RECYCLE
EXTEND
DCA AZ # PICK UP AZ AND EL IN SP 2S COMP
INDEX FIXLOC
DXCH 8D # STORE IN 8D AND 9D OF LOCAL VAC
CAF ZERO # BACKUP SYSTEM TO BE USED
TCF COASCODE # ZERO APPARENT ROTATION
CODE1TO6 INDEX XYMARK # INDEX AOT POSITION BY DET CODE
CA AOTEL -1
INDEX FIXLOC
TS 9D # STORE ELEVATION IN VAC+9D
INDEX XYMARK # INDEX DET CODE 1,2 OR 3
CA AOTAZ -1
## Page 258
INDEX FIXLOC
TS 8D # STORE AZIMUTH IN VAC +8D
CA AOTAZ +1 # COMPENSATION FOR APPARENT ROTATION OF
EXTEND # AOT FIELD OF VIEW IN LEFT AND RIGTHT
INDEX FIXLOC # DETENTS IS STORED IN VAC +10D IN SP
MSU 8D # PRECISION ONES COMPLEMENT
COASCODE INDEX FIXLOC
TS 10D # ROT ANGLE
TC INTPRET # COMPUTE X AND Y PLANE VECTORS
CLEAR GOTO
XDSPFLAG
OPTAXIS
## Page 259
# THE OPTAXIS SUBROUTINE COMPUTES THE X AND Y MARK PLANE VECS AND
# AND ROTATES THEM THRU THE APPARENT FIELD OF VIEW ROTATION UNIQUE TO AOT
# OPTAXIS USES OANB TO COMPUTE THE OPTIC AXIS
SETLOC P50S1
BANK
OPTAXIS CALL # GO COMPUTE OA AND X AND Y PLANE VECS
OANB
SLOAD SR1 # LOAD APP ROTATION IN ONES COMP
10D # RESCALE BY 2PI
PUSH SIN # 1/2SIN(ROT) 0-1
PDDL COS
PUSH VXSC # 1/2COS(ROT) 2-3
18D
PDDL VXSC # 1/4COS(ROT)UYP 4-9
0
24D # 1/4SIN(ROT)UXP
BVSU STADR # UP 4-9
STODL YPLANE # YPNB=1/4(COS(ROT)UYP-SIN(ROT)UXP)
VXSC PDDL # UP 2-3 UP 0-1 FOR EXCHANGE
24D # 1/4COS(ROT)UXP PUSH 0-5
VXSC VAD # 1/4SIN(ROT)UYP
18D # UP 0-5
STADR
STOVL XPLANE
LO6ZEROS # INITIALIZE AVE STAR VEC ACCUMULATOR
STORE STARSAV2
BOFF EXIT # IF INFLIGHT &KM MARKING GET SIGHTING
FLT59FLG # BODY VECTOR FOR THET EST IN ITERATION
ENDAXIS # LOOP
EBANK= XSM
CA EBANK5
TS EBANK # PLANET ROUTINE USES EBANK5
TC INTPRET
RTB CALL
LOADTIME
PLANET
STORE BODY
ENDAXIS EXIT
EBANK= XYMARK
CA EBANK7 # RESTORE EBANK IN CASE OF PLANET BRANCH
TS EBANK
TC BANKCALL
CADR GETMKS
## Page 260
# THE OANB ROUTINE COMPUTES THE OPTIC AXIS OF THE SIGHTING INSTRUMENT
# FROM AZIMUTH AND ELEVATION INPUT FROM THE ASTRONAUT.
SETLOC AOTMARK2
BANK
COUNT* $$/MARK
OANB SETPD STQ
0
GCTR # STORE RETURN
SLOAD RTB
9D # PICK UP SP ELV
CDULOGIC
PUSH COS
PDDL SIN # 1/2COS(ELV) PD 0-1
STADR
STODL SCAXIS # OAX=1/2SIN(ELV)
8D # PICK UP AZ SP
RTB
CDULOGIC
PUSH COS
STORE 20D # STORE UYP(Y) 20-21
PDDL SIN # 1/2COS(AZ) PD 2-3
PUSH DCOMP # PUSH 1/2SIN(AZ) 4-5
STODL 22D # STORE UYP(Z) 22-23
LO6ZEROS
STODL 18D # STORE UYP(X) 18-19 UP 4-5
DMP SL1
0
STODL SCAXIS +2 # OAY=1/2COS(ELV)SIN(AZ)
DMP SL1 # UP 2-3
STADR # UP 0-1
STOVL SCAXIS +4 # OAZ=1/2COS(ELV)COS(AZ)
18D # LOAD UYP VEC
VXV UNIT
SCAXIS # UXP VEC=UYP X OA
STORE 24D # STORE UXP
GOTO
GCTR
## Page 261
# SURFSTAR COMPUTES A STAR VECTOR IN SM COORDINATES FOR LUNAR
# SURFACE ALIGNMENT AND EXITS TO AVEIT TO AVERAGE STAR VECTORS.
SETLOC P50S
BANK
COUNT* $$/R59
SURFSTAR SSP AXT,2 # INITIALIZE LOOP COUNTER (X1)
S2
1
28D
CLEAR DLOAD
FREEFLAG
ONEDEG
STOVL* DELTHET
0,1 # PICK UP CURSOR MARK CDUS
STODL* CDUSPOT
7,1 # PICK UP SPIRAL FROM MK VAC
RTB
CDULOGIC
STCALL 8D # SPIRAL IN REVS
ROTCOMP
STODL* POINTVSM # YPRIME VEC FOR SROT MEAS. COORDS.
6,1 # PICK UP CURSOR
RTB
CDULOGIC
STCALL 10D # CURSOR IN REVS
ROTCOMP # COMPUTE YP VEC(NB)
CALL
TRG*NBSM # TRANSFORM YP VEC TO SM AT YROT MARK
STOVL* STARAD +6
1,1 # PICK UP SPIRAL CDUS
STCALL CDUSPOT # GET SINES AND COSINES OF CDUS
CD*TR*G
BON DLOAD
FLT59FLG
FLTTHET
8D # COMPUTE INITIAL THETA EST
DSU DAD
10D
ABOUTONE
THETRET STORE THETEST # INITIAL THET EST MUST BE BETWEEN
DSU BPL # 24 AND 342 DEGREES
DEG342
COOLIT
DLOAD DSU
THETEST
DEG24
BMN CALL
COOLIT
SNBCOMP # POMPUTE 2ST EST OF STAR(SM)
## Page 262
DOT SL1
STARAD +6
SNBTEST STORE ESTER1 # SEE IF STAR IN YROT PLANE
ABS DSU
COS.01
BMN DLOAD
AVEIT # LESS THAN EPSILON, GOT STAR(SM) IN 24D
DELTHET
DAD
THETEST # INCREMENT THETA EST BY 1 DEG
STCALL THETEST
SNBCOMP # COMPUTE 2ND EST OF STAR VEC
DOT SL1
STARAD +6
STORE ESTER2 # SEE IF SOLUTION BETWEEN ESTER1, ESTER2
BMN DLOAD
NEGEST2
ESTER1
BPL GOTO
WHICHWAY # NO SOLU, ARE WE GOING IN RIGHT DIRECTION
HOMEIN # SOLUTION BRACKETED, GET FINE CORRECTION
NEGEST2 DLOAD BMN
ESTER1
WHICHWAY
HOMEIN DSU PDDL
ESTER2
ESTER2
DDV
DMP
DELTHET
STCALL DELTHET # FINE SOLUTION, THIS SHOULD GET SNB
NEXTIT
WHICHWAY ABS PDDL # ABS(ESTER1) 0-1
ESTER2
ABS BDSU # ABS(ESTER1)-ABS(ESTER2)
BPL BONSET
NEXTIT
FREEFLAG
COOLIT
DLOAD DCOMP # REVERSE DIRECTION OF ESTIMATION
DELTHET
STORE DELTHET
NEXTIT DLOAD TIX,2 # SEE IF 10 ITERATIONS HAVE BEEN MADE
ESTER2
SNBTEST
COOLIT EXIT
INCR NOMKCNT
TC BANKCALL
CADR COOLOUT
## Page 263
ROTCOMP PUSH COS # COS(ROT) 0-1
PDDL SIN # 1/8SIN(ROT)XP 0-5 1/2COS(ROT) MPAC
VXSC PDDL
XPLANE
VXSC VSU
YPLANE
UNIT RVQ # 1/2UNIT(VEC) IN MPAC
DEG342 2DEC .94999999
DEG24 2DEC .06666666
COS.01 2DEC .0001745
ABOUTONE 2DEC .99999999
ONEDEG 2DEC .00277777
SETLOC AOTMARK3
BANK
FLTTHET VLOAD MXV
BODY
REFSMMAT # FOR INFLIGHT P57 MARKING COMPUTE INITIAL
UNIT CALL # THET EST BY 12(STAR X OPTAXIS)
*SMNB*
DOT SL1
SCAXIS
ARCCOS DMP
3/4 # 12 SCALED BY 16
SL4 GOTO
THETRET
## Page 264
# SUBROUTINE TO COMPUTE STAR VEC IN NB COORDINATES
SETLOC P50S1
BANK
SNBCOMP STQ
QMIN
DLOAD DMP
THETEST
DP1/12
PUSH COS # COS(T/12) 0-1
PDDL SIN
PDDL PUSH # SIN(T/12) 2-3
THETEST
SIN PDDL # SIN(T) 4-5
COS DMP
2 # COS(T)SIN(T/12) 6-7
PDVL VXV
POINTVSM
SCAXIS
VSL1 VXSC # UP 6-7
STADR
STODL 24D # COS(T)SIN(T/12)(YP X OA)
DMP # UP 4-5 UP 2-3
VXSC BVSU
POINTVSM # SIN(T)SIN(T/12)YP
24D
STODL 24D
VXSC VSR1 # UP 0-1
SCAXIS
VAD UNIT
24D
STCALL 24D # STAR(NB)
*NBSM*
STORE 24D # STAR(SM)
GOTO
QMIN
DP1/12 2DEC .083333333
## Page 265
# GETMKS ROUTINE
SETLOC AOTMARK1
BANK
COUNT* $$/MARK
GETMKS CAF ZERO # INITIALIZE MARK ID REGISTER AND MARK CNT
TS NOMKCNT
TS XCOUNT
TS YCOUNT
TS XYMARK
TS XMKCNTR
TS YMKCNTR
CS FLAGWRD8
MASK BIT8
EXTEND
BZF SETSURF # SURFFLAG FLAG SET, JAM ONE IN WHATMARK
CA FLAGWRD9
MASK BIT4 # SEE IF CURSOR-SPIRAL MARKING
CCS A
SETSURF CA ONE
TS WHATMARK
PASTIT CAF LOW9 # FREE UP MARKRUPT RETAINING MKVAC ADR
MASK MARKSTAT
TS MARKSTAT
INDEX WHATMARK
CAF MKVB54 # DISPLAY MARK REQUEST
TC BANKCALL
CADR GOMARK2
TCF KILLAOT # V34-DOES GOTOPOOH
TCF MARKCHEX # VB33-PROCEED, GOT MARKS, COMPUTE LOS
CS BIT6
MASK MPAC
EXTEND
BZF GETDAT # VB32 RECYCLE TO V01N71
CS WHATMARK # ENTER-REVERSE CURSOR OR SPIRAL REQUEST
TS WHATMARK
CCS XYMARK
TCF +2 # IF ONE, SET ZERO
CAF ONE # IF ZERO, SET ONE
TS XYMARK
PREPAST EXTEND
DCA XMKCNTR
DXCH XCOUNT # UPDATE DISPLAY COUNTERS
CAF BIT13
INDEX XYMARK
ADS XCOUNT
TCF PASTIT
## Page 266
MARKCHEX CS MARKSTAT # SET BIT12 TO DISCOURAGE MARKRUPT
MASK BIT12
ADS MARKSTAT
MASK LOW9
TS XYMARK # JAM MARK VAC ADR IN XYMARK FOR AVESTAR
CAF ZERO
TS MKDEX # SET MKDEX ZERO FOR LOS VEC CNTR
CCS XMKCNTR
TCF +2
TCF MKALARM
TS XMKCNTR
CCS YMKCNTR
TCF +2
TCF MKALARM
TS YMKCNTR
COM
AD XMKCNTR
EXTEND
BZMF AVESTAR
CA YMKCNTR
TS XMKCNTR
AVESTAR CS XMKCNTR
EXTEND
MP EIGHT # GET C(L)=-8 MARKCNTR
CS XYMARK
AD L # ADD - MARK VAC ADR SET IN MARKCHEX
INDEX FIXLOC
TS X1 # JAM - CDU ADR OF X-MARK IN X1
CA FIXLOC # SET PD POINTER TO ZERO
TS PUSHLOC
TC INTPRET
BON BON
SURFFLAG
SURFSTAR
FLT59FLG
SURFSTAR
VLOAD*
1,1
STOVL CDUSPOT
YPLANE
CALL
TRG*NBSM # CONVERT IT TO STABLE MEMBER
PUSH VLOAD*
0,1 # PUT X-MARK CDUS IN CDUSPOT FOR TRG*NBSM
STOVL CDUSPOT
XPLANE
CALL
## Page 267
TRG*NBSM # CONVERT IT TO STABLE-MEMBER
VXV UNIT # UNIT(XPSM * YPSM)
STADR
STORE 24D
AVEIT EXIT
CAF BIT12 # INCREMENT STAR VEC COUNTER
ADS MKDEX # MKDEX WAS INITIALIZED ZERO IN MARKCHEX
TC INTPRET
SLOAD PDVL
MKDEX
24D # LOAD CURRENT VECTOR
VSR3 V/SC
0
STODL 24D # VEC/N
0
DSU DDV
DP1/8 # (N-1)/N
VXSC VAD
STARSAV2 # ADD VEC TO PREVIOUSLY AVERAGED VEC
24D # (N-1)/N AVESTVEC + VEC/N
UNIT
STORE STARSAV2
EXIT
COOLOUT CCS XMKCNTR # SEE IF MARK PAIR IN MKVAC
TCF AVESTAR -1 # THERE IS-GO GET IT-DECREMENT COUNTER
CCS NOMKCNT # IF ANY MKS NOT USED DISPLAY V50N25
TCF ASKASTR # AND THE NUMBER MKS NOT USED
ENDMARKS CAF FIVE
TC WAITLIST
EBANK= XYMARK
2CADR MKRELEAS
TC ENDMARK
MKALARM TC ALARM # NOT A PAIR TO PROCESS-DO GETMKS
OCT 111
TCF GETMKS
ASKASTR CAF OCT16
TS DSPTEM1
CA NOMKCNT
TS DSPTEM1 +1
CAF V50N25
TC BANKCALL
CADR GOMARK2R
TCF KILLAOT # V34 TERMINATE
TCF ENDMARKS # PRO - PROCEED ANYWAY
## Page 268
TCF GETDAT
CAF BIT3
TC BLANKET
TC ENDOFJOB
V50N25 VN 5025
V01N71 VN 171
V06N87* VN 687
## Page 269
# MARKRUPT IS ENTERED FROM INTERUPT LEAD-INS AND PROCESSES CHANNEL 16
# CAUSED BY X,Y MARK OR MARK REJECT OR BY THE RATE OF DESCENT SWITCH
MARKRUPT TS BANKRUPT
CA CDUY # STORE CDUS AND TIME NOW-THEN SEE IF
TS ITEMP3 # WE NEED THEM
CA CDUZ
TS ITEMP4
CA CDUX
TS ITEMP5
EXTEND
DCA TIME2
DXCH ITEMP1
XCH Q
TS QRUPT
CAF OCT140 # SEE IF ROD INPUT
EXTEND
RAND NAVKEYIN
EXTEND
BZMF FINDKEY
TC DESCBITS # ROD INPUT
FINDKEY TC VALIDCHK # NO ROD INPUT-SEE IF VALID MARKRUPT
CAF BIT5 # GOOD RUPT-SEE IF MARK REJECT
EXTEND
RAND NAVKEYIN
CCS A
TCF MKREJ # ITS A MARK REJECT
CHKWHAT CCS WHATMARK
TCF XMKRUPT # +1 FOR CURSOR MARK
TCF FINDMARK # 0 FOR INFLIGHT MARK
TCF YMKRUPT # -1 FOR SPIRAL
FINDMARK CAF BIT4 # SEE IF Y MARK
EXTEND
RAND NAVKEYIN
CCS A
TCF YMKRUPT # ITS Y MARK OR SPIRAL MARK
CAF BIT3 # SEE IF X MARK
EXTEND
RAND NAVKEYIN
CCS A
TCF XMKRUPT # ITS A X MARK
113ALRM TC ALARM # NO INBITS IN CHANNEL 16
OCT 113
## Page 270
TC RESUME
XMKRUPT CAF ZERO
TCF +2 # SET STORE INDEX ZERO
YMKRUPT CAF ONE
TS XYMARK # SET MARK ID REG
INDEX A
CS XMKCNTR
AD FIVE
EXTEND
BZMF VACSTOR # IF 7TH MARK. STORE DATA AS 6TH MARK
INDEX XYMARK
INCR XMKCNTR
TCF VACSTOR
DESCBITS MASK BIT7
TS L
CAF AVEGFBIT
MASK FLAGWRD7
CCS A
TCF RODIN
TC VALIDCHK
TCF CHKWHAT # THIS IS BACK UP MARK
VALIDCHK CCS MARKSTAT
TCF CHK12
ALM112 TC ALARM # MARKRUPT NOT ALLOWED
OCT 112
TC RESUME
CHK12 MASK BIT12
CCS A
TCF ALM112
TC Q
RODIN CCS L
CS TWO
AD ONE
ADS RODCOUNT
TC RESUME
## Page 271
# DATA STORE ROUTINE
VACSTOR EXTEND
DCA ITEMP1 # STORE MARK TIME FOR DOWNLINK
DXCH TSIGHT
CAF LOW9
MASK MARKSTAT # GRAB MARK VAC ADR
TS MKDEX
INDEX XYMARK
CCS XMKCNTR # DECREMENT COUNTER TO START STORE AT ZERO
EXTEND
MP EIGHT
XCH L
AD XYMARK
ADS MKDEX # MK VAC ADR + 8(CNTR-1) + MARK ID
CA ITEMP3
INDEX MKDEX
TS 0 # STORE CDUY
CA ITEMP4
INDEX MKDEX
TS 2 # STORE CDUZ
CA ITEMP5
INDEX MKDEX
TS 4 # STORE CDUX
ENDSTOR TCF REMARK
## Page 272
# REMARK AND CURSOR-SPIRAL KEYIN ROUTINE
REMARK CAF PRIO15 # ENTER JOB TO CHANGE DISPLAY
TC NOVAC
EBANK= XYMARK
2CADR CHANGEVB
TC RESUME
CHANGEVB CA WHATMARK
EXTEND
BZF PREPAST # RE-DISPLAY VERB54 FOR INFLIGHT MARK
CS MARKSTAT # SET BIT12 TO DISCOURAGE MARK
MASK BIT12
ADS MARKSTAT
INDEX WHATMARK
CAF V06N79* # EITHER V21N79 OR V 22N79 LOAD VERB
TC BANKCALL
CADR GOMARKFR
TCF KILLAOT # VB34-TERMINATE
TCF N79DISP
TCF N79DISP
CAF SEVEN
TC BLANKET
TC ENDOFJOB
N79DISP CAF V06N79* # ENTER-DISPLAY V06N79 FOR VERIFY
TC BANKCALL
CADR GOMARKFR
TC KILLAOT
TCF SURFAGAN
TCF N79DISP
CS XYMARK
AD SIX
TC BLANKET
TC ENDOFJOB
SURFAGAN INDEX XYMARK
CA CURSOR
INDEX MKDEX
TS 6
TCF PREPAST
V22N79 VN 2279 # SPIRAL LOAD DISPLAY
## Page 273
V06N79* VN 679
V21N79 VN 2179 # CURSOR LOAD DISPLAY
MKVB53 VN 5371 # SPIRAL MARK REQUEST
MKVB54 VN 5471 # X OR Y MARK
MKVB52 VN 5271 # CURSOR MARK REQUEST
DP1/8 2DEC .125
## Page 274
# MARK REJECT ROUTINE
MKREJ INDEX XYMARK
CCS XMKCNTR
TCF REJMK # REJECT MARK
TC ALARM
OCT 115 # NO MARK OF THIS KIND TO REJECT
TC RESUME
REJMK INDEX XYMARK
TS XMKCNTR # STORE DECREMENTED MARK COUNTER
CAF PRIO15 # ENTER JOB TO RE-DISPLAY MARK REQUEST
TC NOVAC
EBANK= XYMARK
2CADR PREPAST
TC RESUME
