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monitor-sources/plt.mac
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;<4-1-FIELD-IMAGE.MONITOR>PLT.MAC.2, 25-Feb-82 20:45:22, EDIT BY DONAHUE
;UPDATE COPYRIGHT DATE
;<4.MONITOR>PLT.MAC.3, 3-Jan-80 08:10:18, EDIT BY R.ACE
;UPDATE COPYRIGHT DATE
;<4.MONITOR>PLT.MAC.2, 6-Mar-79 09:39:09, EDIT BY KONEN
;UPDATE COPYRIGHT FOR RELEASE 4
;<HELLIWELL.1065>PLT.MAC.4, 5-Sep-77 01:29:00, EDIT BY HELLIWELL
;<HELLIWELL.1065>PLT.MAC.3, 21-Aug-77 12:44:11, EDIT BY HELLIWELL
;<HELLIWELL.1065>PLT.MAC.2, 21-Aug-77 12:32:46, EDIT BY HELLIWELL
;REL 3 CHANGES
;COPYRIGHT (C) 1976,1977,1978,1979,1980,1981,1982 BY DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
SEARCH PROLOG
TTITLE (PLT,,< - PLOTTER SERVICE, R. HELLIWELL>)
;LOCAL STORAGE DECLARED IN STG.MAC
EXTN <PLTCHR,PLTTIM>
EXTN <PLTBF1,PLTBF2,PLTSTS,PLTLCK,PLTCNT,PLTITC,PLTFDC,PLTPTR>
EXTN <PLTPWR,PLTBFZ>
; SPECIAL Ac's
DEFAC (U,Q1) ;UNIT NUMBER
DEFAC (IOS,Q2) ;DEVICE STATUS BITS
DEFAC (STS,P1) ;SEE GTJFN FOR FUNCTIONS
DEFAC (JFN,P2)
DEFAC (DEV,P4)
;DEVICE CODES
PLT0==140
PLT1==144
MAXPLT==2 ;MAX NUMBER PLOTTERS
; Parameters
PLTDON==10 ; Done coni/o bit
PLTBSY==20 ; Busy coni/o bit
PLTEOT==40 ; POWER ON CONI BIT
PLTPU==40 ; PEN UP COMMAND
PLTDD==4 ; DRUM DOWN COMMAND (+X DIRECTION)
; Entries to this part
INTERN PLTSV ; Interrupt service routine
INTERN PLTCHK ; Entry to clock routine
INTERN PLTRST ; Reset
; Externally defined things
; Flags in pltsts and ios
FLG(ALTP,L,IOS,400000) ; Buffer 2 for prog
FLG(ALTI,L,IOS,200000) ; Buffer 1 for int
FLG(OPN,L,IOS,040000) ; Plt is open
FLG(PCLZF,L,IOS,004000) ; PLT IS BEING CLOSED
FLG(STOP,L,IOS,002000) ; Plt is stopped due to no power off
;I/O INSTRUCTION MACRO AND TABLES
DEFINE IOT (INST,Y)<
MOVEI D,Y
XCT %'INST(U)>
DEFINE IOTBLD (INST,DEV)<
%'INST: ZZ==0
REPEAT MAX'DEV,<IOTINS (INST,DEV,\ZZ)
ZZ==ZZ+1>>
DEFINE IOTINS (INST,DEV,N)<
INST DEV'N,0(D)>
;BUILD THE IOT TABLES (INDEXED BY UNIT NUMBER)
IOTBLD (CONO,PLT)
IOTBLD (CONI,PLT)
IOTBLD (CONSO,PLT)
IOTBLD (CONSZ,PLT)
IOTBLD (DATAO,PLT)
; Plt dispatch table
SWAPCD
PLTDTB::DTBBAD(DESX9) ; Set directory
DTBBAD(DESX9) ; NAME LOOKUP
DTBBAD(DESX9) ; Extension lookup
DTBBAD(DESX9) ; Version lookup
DTBBAD(DESX9) ; Protection insertion
DTBBAD(DESX9) ; Account insertion
DTBBAD(DESX9) ; Status insertion
DTBDSP(PLTOPN) ; Plt open
DTBBAD(DESX9) ; Input
DTBDSP(PLTSQO) ; Output
DTBDSP(PLTCLZ) ; Close
DTBBAD(DESX9) ; Rename
DTBBAD(DESX9) ; Delete
DTBBAD(DUMPX6) ;DUMPI
DTBBAD(DUMPX6) ;DUMPO
DTBBAD(DESX9) ; Mount
DTBBAD(DESX9) ; Dismount
DTBBAD(DESX9) ; Init directory
DTBBAD(MTOX1) ; MTOPR
DTBDSP(PLTGST) ; Get status
DTBBAD(DESX9) ; Set status
DTBDSP(RSKP) ; RECORD OUT
DTBDSP(RFTADN) ; READ TAD
DTBDSP(SFTADN) ; SET TAD
DTBDSP (BIOINP) ;SET JFN FOR INPUT
DTBDSP (BIOOUT) ;SET JFN FOR OUTPUT
DTBBAD (GJFX49) ;CHECK ATTRIBUTE
DTBLEN==:.-PLTDTB ;GLOBAL LENGTH OF DISPATCH TABLE
; Initialize plotter
; Call: CALL PLTINI
; Returns
; +1 ; Always (called at system initialization time
RESCD
PLTINI::MOVSI U,-PLTN ;INITIALIZE ALL PLOTTERS
PLTINL: SETZM PLTPWR(U) ;INITIALIZE POWER INDICATE FLAG
IOT CONSZ,PLTEOT ;POWER ON?
SETOM PLTPWR(U) ;YES - FLAG FEATURE EXISTS
CALL PLTIN0 ;INITIALIZE THE STORAGE FOR THIS UNIT
AOBJN U,PLTINL ;LOOP BACK FOR ALL UNITS
RET
;ROUTINE TO INITIALIZE THE STORAGE AREA FOR A PARTICULAR UNIT
PLTIN0: IOT CONO,0 ;CLEAR INTERRUPT ASSIGNMENT
SETZM PLTSTS(U) ;HERE FROM CLOSE TO CLEAN UP
SETOM PLTLCK(U)
SETOM PLTCNT(U)
SETZM PLTFDC(U)
RET
; Plotter reset routine turns plotter back on if it should be
PLTRST: MOVSI U,-PLTN ;SET UP TO RESET ALL UNITS
PLTRS0: SKIPGE PLTCNT(U) ;WAS PLT ACTIVE?
JRST PLTRS1 ;NO, PLT WAS NOT ACTIVE
IOT CONO,PLTDON+PLTCHN ;YES, TURN IT BACK ON
PLTRS1: AOBJN U,PLTRS0 ;LOOP BACK FOR ALL UNITS
RET
; ROUTINE TO RETURN PLOTTER STATUS
PLTGST: IOT CONI,A ;GET PHYSICAL DEVICE STATUS
RET ;AND RETURN
; Open plt
; Call: JFN ; Jfn
; CALL PLTOPN
; Returns
; +1 ; Error, error number in 1
; +2 ; Ok
SWAPCD
PLTOPN: HLRZ U,DEV ;SET UP THE UNIT NUMBER
LOCK PLTLCK(U),<CALL LCKTST>
MOVE IOS,PLTSTS(U)
TQNE <WRTF> ;MUST WANT WRITE,
TQNE <READF> ; BUT NOT READ
JRST [ UNLOCK PLTLCK(U) ;OTHERWISE LOSE
MOVEI A,OPNX13 ;PLT DOESN'T OPEN THAT WAY
RETBAD()]
IOT CONSZ,PLTEOT ; IS PLT POWERED UP
SETOM PLTPWR(U) ;YES - POWER INDICATE FEATURE PRESENT
TQOE <OPN> ; Test and set opn flag
JRST [ UNLOCK PLTLCK(U) ; Already opn
MOVEI A,OPNX9 ; Give busy error return
RET]
TXZ IOS,ALTP!ALTI!STOP
PLTOP1: MOVEI B,6 ; Get 6 bit bytes
DPB B,[POINT 6,PLTPTR(U),11]
; Store in byte pointer
MOVEM IOS,PLTSTS(U) ; Store status word
SETOM PLTCNT(U) ; No full buffers
SETZM PLTITC(U) ; No items left in current buffer
UNLOCK PLTLCK(U)
HRROI A,PLTPU ; Pen up command
MOVEM A,PLTFDC(U)
IOT CONO,PLTDON+PLTCHN ; Set done flag to cause interrupt
SETZM FILBYN(JFN)
SETZM FILLEN(JFN)
TQO <WNDF>
RETSKP
; Close plt
; Call: JFN ; Jfn
; CALL PLTCLZ
; Returns
; +1 ; Always
PLTCLZ: HLRZ U,DEV ;GET THE UNIT NUMBER OF THIS PLT
TXNE A,CZ%ABT ;IS THIS AN ABORT?
JRST PLTCLA ;YES, DONT BLOCK EVER
TQNN <WNDF> ; IS A BUFFER SET UP?
SKIPN FILBYN(JFN) ; AND ARE THERE ANY CHARACTERS THERE
JRST PLTCL1 ; NO, DONT EMPTY ANY BUFFERS
CALL DMPBUF ; Dump partial buffer
PLTCL1: HRLI A,PLTCNT(U) ; SET UP FOR DISMIS
HRRI A,DISLT
SKIPL PLTCNT(U)
CALLRET PLTSBF ; Dismiss til last buffer being dumped
HRLI A,PLTITC(U) ; SET UP FOR POSSIBLE DISMIS
HRRI A,DISLET
SKIPLE PLTITC(U)
CALLRET PLTSBF ; Dismiss till last buffer out
HRROI B,PLTPU
CALL DOSTEP
HRLI A,PLTFDC(U) ; GET MDISMS ARG
HRRI A,DISET
SKIPE PLTFDC(U) ;IS PLOTTER STILL GOING?
CALLRET PLTSBF ;YES, WAIT UNTIL PLOTTER IS DONE
PLTCL2: CALL PLTIN0 ;CLEAN UP
RETSKP
RESCD
DOSTEP: PIOFF
TQON <PCLZF> ; IF PLT DOING PENUP, DONT DO IT AGAIN
MOVEM B,PLTFDC(U)
IOT CONSZ,PLTBSY
JRST DOSTP1
IOT CONO,PLTDON+PLTCHN
DOSTP1: PION
RET
PLTCLA: IOT CONO,PLTDON ;TRY TO RAISE THE PEN
IOT DATAO,[PLTPU]
JRST PLTCL2
SWAPCD
; Plt sequential output
; Call: A ; Byte
; JFN ; Jfn
; CALL PLTSQO
; Returns
; +1 ; Always
PLTSQO: HLRZ U,DEV ;SET UP UNIT INDEX
MOVE IOS,PLTSTS(U) ; Get status word
PUSH P,A ; Preserve byte
TQNE <WNDF> ; Buffers set up yet?
JRST [CALL SETBUF ; No, do it
JRST [POP P,(P) ;TIME TO BLOCK
CALLRET PLTSBF]
JRST .+1] ;BUFFER IS NOW SET UP
SOSGE FILCNT(JFN) ; Buffer full?
JRST [CALL DMPBUF ; Yes, dump it
POP P,A ; RESTORE BYTE
JRST PLTSQO] ; TRY AGAIN
AOS FILBYN(JFN) ; Count bytes in buffer
POP P,A
IDPB A,FILBYT(JFN) ; Deposit in buffer
RET
DMPBUF: MOVX IOS,ALTP
XORB IOS,PLTSTS(U) ; Complement buffer
MOVEI B,PLTBFZ ; CALCULATE OFFSET INTO BUFFER AREA
IMULI B,(U) ; FOR THIS UNIT
MOVEI A,PLTBF1(B)
TQNN <ALTP>
MOVEI A,PLTBF2(B)
PUSH P,A
MOVEI A,^D36
LDB B,PBYTSZ ; User's byte size
IDIV A,B ; User bytes per word
MOVEI B,6 ; 6 bytes per word
IMUL B,FILBYN(JFN)
IDIV B,A ; Number of output bytes in buffer
SKIPE C
AOS B ; Round up
POP P,A ; Get buffer location
HRRZM B,(A) ; Store count in buffer word 0
AOSE PLTCNT(U) ; Count one more full buffer
JRST DMPBF1 ; NOT FIRST, DONT START PLOTTER
IOT CONO,PLTDON+PLTCHN ; If this is first one, start plotter
DMPBF1: TQO <WNDF> ;MARK THAT BUFFER IS NOT SET UP
RET
SETBUF: HRLI A,PLTCNT(U) ; SET UP FOR POSSIBLE DISMIS
HRRI A,DISLET
SKIPLE PLTCNT(U) ; Are all buffers non-empty?
CALLRET PLTSBF ; Yes, wait for one to empty
MOVEI B,PLTBFZ ; CALCULATE OFFSET INTO BUFFER AREA
IMULI B,0(U) ; FOR THIS UNIT
MOVEI A,PLTBF1+1(B) ; Use buffer 1
TQNE <ALTP> ; Unles alternate flag
MOVEI A,PLTBF2+1(B) ; Then use 2
HRRM A,FILBYT(JFN) ; Point program byte pointer to buffer
MOVEI A,^D36
DPB A,PBYTPO ; Position to left of first word
MOVEI A,^D36
LDB B,PBYTSZ ; User's byte size
IDIV A,B ; Bytes per word
IMULI A,PLTBFZ-1 ; Bytes per buffer
MOVEM A,FILCNT(JFN) ; Init filcnt
SETZM FILBYN(JFN) ; No bytes written yet
TQZ <WNDF> ; MARK THAT A BUFFER IS READY
RETSKP
PLTSBF: TQO <BLKF> ;MARK THAT A BLOCK IS TO BE DONE
RET ;RETURN TO BOUT
; Plt interrupt routine
RESCD
PLTSV: PUSH P,U ;SAVE THE UNIT NUMBER AC
MOVSI U,-PLTN ;SET UP TO SEARCH FOR THE INTERRUPT
PLTSVL: IOT CONI,A ;GET PLT BITS
TRNN A,PLTDON ;PLT INTERRUPT?
JRST [ AOBJN U,PLTSVL ; NO, LOOP BACK FOR OTHER PLOTTERS
POP P,U ; NONE FOUND, RESTORE U
RET] ;NOT OUR INTERRUPT
TRNN A,PLTEOT ;DID POWER GO OFF?
JRST [ SKIPN PLTPWR(U) ;REMOTE POWER FEATURE PRESENT?
JRST PLTSV0 ;NO, DONT GO TO SLEEP
MOVX A,STOP ;YES - INDICATE TO CLOCK RTN
IORM A,PLTSTS(U) ; ...
IOT CONO,0 ;AND WAIT FOR POWER TO COME BACK
SETZM PLTTIM ;CLEAR TIME WORD TO WAKE UP CLOCK RTN
JRST PLTXIT] ;AND EXIT
SETOM PLTPWR(U) ;REMOTE POWER FEATURE EXISTS FOR SURE.
PLTSV0: SKIPE PLTFDC(U) ;ZERO?
JRST PLTSVS ;NO - CHECK SPECIAL ACTION
PLTSV1: SKIPG PLTITC(U) ; Items left in buffer?
JRST PLTSV2 ; No.
ILDB A,PLTPTR(U) ; Yes, get one
IOT DATAO,A
SOSG PLTITC(U) ;ONE FEWER ITEMS
JRST [ SOS PLTCNT(U) ;NO MORE LEFT - MEANS ONE FEWER BUFFER
JRST PLTXIT]
PLTXIT: POP P,U ;RESTORE SAVED AC
JRST PLTCHR ;RETURN AND DISMISS INTERRUPT
PLTSVS: SKIPGE PLTFDC(U) ; Negative?
JRST [ IOT DATAO,PLTFDC(U); Yes, has a special plot command
SETZM PLTFDC(U)
JRST PLTXIT]
IOT DATAO,[PLTDD] ; Yes, plot +x
SOS PLTFDC(U)
JRST PLTXIT
PLTSV2: SKIPGE PLTCNT(U)
JRST [ IOT CONO,0 ; Turn off plotter
JRST PLTXIT]
MOVEI B,PLTBFZ ; CALCULATE OFFSET INTO BUFFER AREA
IMULI B,0(U) ; FOR THIS UNIT
MOVEI A,PLTBF1(B)
EXCH IOS,PLTSTS(U) ;GET PLOTTER STATUS
TQCE <ALTI>
MOVEI A,PLTBF2(B)
EXCH IOS,PLTSTS(U) ;RESTORE STATUS
HRRZ B,(A) ; Get item count of buffer
AOS A
MOVEM B,PLTITC(U)
HRRM A,PLTPTR(U) ; Point pointer to the first word
MOVEI A,44
DPB A,[POINT 6,PLTPTR(U),5]; Point to left of first byte
JRST PLTSV1 ; And continue with the new buffer
; This routine is called periodically when plotter power has gone off
; To restart when power is returned
PLTCHK: MOVEI A,^D60000
MOVEM A,PLTTIM ; 1 minute if not active
MOVSI U,-PLTN ; SET UP TO LOOK AT ALL UNITS
PLTCK1: MOVE A,PLTSTS(U)
TXNE A,OPN
TXNN A,STOP
JRST PLTCK2 ; Plotter not in use or not stopped
MOVEI A,^D5000
MOVEM A,PLTTIM
IOT CONSO,PLTEOT
JRST PLTCK2 ; Power is still off
MOVX A,STOP ; Power back on
ANDCAM A,PLTSTS(U) ; Clear stop bit
IOT CONO,PLTDON+PLTCHN ; Turn plotter back on
PLTCK2: AOBJN U,PLTCK1 ; LOOP BACK FOR ALL UNITS
RET
TNXEND
END