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ppsser.mac
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Title PPSSER - Paper Tape Punch Service Routine for KS10s - V003
Subttl Timothe Litt 10 SEP-85
;From PTPSER V433
SEARCH F,S
$RELOC
;THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
; OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
;
.CPYRT<1973,1986>
;COPYRIGHT (C) 1973,1974,1975,1976,1977,1978,1979,1980,1982,1986 BY
;DIGITAL EQUIPMENT CORP., MAYNARD, MASS.
;ALL RIGHTS RESERVED.
XP VPTPSR,003
;PUT VERSION NUMBER IN GLOB LISTING AND LOADER STORAGE MAP
ENTRY PTPSER
PTPSER::
; CSR and DDB bit definitions
PPS==PTPCNO##+0 ;Word in DDB with IO address of CSR
ERR==100000 ;Error (No tape, or No power)
RDY==000200 ;Ready (Cleared on write to PPB, set by DONE)
INTENB==100 ;Interrupt enable
PPB==PTPCNO##+1 ;Word in DDB with IO address of data buffer
PTPIVA==PTPCNO##+2 ;Word in DDB with interrupt vector
PTPIVI==PTPCNO##+3 ;Word in DDB with interrupt instruction
;FORMAT CONTROL
PTPFDN==200
; SPECIAL IO STATUS WORD ASSIGNMENTS
IODISC==400000
PTPFED==200000
PTPEOL==20000
PTPBIN==4000 ;CHECKSUM BINARY
PTPIB==2000 ;IMAGE BINARY
; SPECIAL ASCII CHARACTERS
; DEFINED WITH THE CORRECT PARITY
RUBOUT==377
HORTAB==11
VERTAB==213
FORMFD==14
Subttl UUOCON Interface -- Dispatch table
;PTP SERVICE DISPATCH TABLE
JRST PTPONL ;SEE IF ON-LINE
JRST ECOD2## ;SPECIAL ERROR STATUS
JRST REGSIZ## ;BUFFER LEN CAN BE GOTTEN FROM DDB
JRST PTPINI ;INITILIZE
JRST PTPREL ;HUNG DEVICE TIME-OUT ERROR.
PTPDSP::JRST PTPREL ;RELEASE
JRST PTPCLS ;CLOSE
JRST PTPOUT ;OUTPUT
JRST ILLINP## ;INPUT
SUBTTL UUOCON Interface -- Initialize, CLOSE & RELEAS
PTPINI: MOVE T1,PPS(F) ;Get base address of IO registers
PUSHJ P,UBGOOD## ;Alive?
JRST CPOPJ1## ;No, hopeless case
HRRZ T1,PTPIVA(F) ;Get interrupt vector address
LSH T1,-2 ;Change bytes to words
HLRZ T2,PPS(F) ;Get UBA number
ADD T1,.EPVIT##-1(T2) ;Compute address of instruction
MOVE T2,PTPIVI(F) ;Get interrupt instruction
MOVEM T2,(T1) ;Save for interrupts
PUSHJ P,PTPREL ;Do the RELEAS code
JRST CPOPJ1## ;And return to SYSINI
PTPREL: MOVE T1,PPS(F) ;Get IO address
PUSHJ P,UBGOOD## ;Be sure it's alive
POPJ P, ;Dead, don't touch
MOVEI T1,INTENB ;Get interrupt enable
BCIO T1,@PPS(F) ;Ensure it's clear
POPJ P, ;Done
PTPCLS: PUSHJ P,OUT## ;OUTPUT REMAINING BUFFERS
PUSHJ P,WAIT1## ;WAIT FOR IOACT=0.
MOVE S,DEVIOS(F) ;C(S):=C(PTPIOS)
TLO S,IODISC+PTPFED+IOW ;IODISC:=IOW:=PTPFED:=1
PUSHJ P,SETACT## ;SET ACTIVE FLAG,STORE S,AND
;RESET HUNG DEVICE TIMEOUT COUNT
MOVEI T1,200
MOVEM T1,PTPCNT##(F) ;PTPCNT:=200
MOVEI T1,INTENB ;Get interrupt enable
BSIO T1,@PPS(F) ;Take an interrupt
JRST WAIT1## ;WAIT FOR IOACT=0, ALL BUFFERS FINISHED
Subttl UUOCON Interface -- OUT
PTPOUT: MOVE T1,PPS(F) ;Get CSR address
PUSHJ P,UBGOOD## ;Make sure we have a live one
JRST PTPOU1 ;We don't, say OPR ACTION REQUESTED
MOVEI T1,ERR ;Get error bit
TION T1,@PPS(F) ;Any errors?
JRST PTPIN0 ;No, proceed
PTPOU1: PUSHJ P,HNGSTP## ;ISSUE "DEVICE PTP OK?"
JRST PTPOUT ;TRY AGAIN WHEN "CONT" TYPED
PTPIN0: TLZE S,IOBEG ;VIRGIN DEVICE? (IOBEG:=0)
JRST PTPIN2 ;YES
PTPIN1: TLZ S,IODISC ;CLEAR DISCONNECT BIT
PUSHJ P,SETACT## ;SET ACTIVE FLAG,STORE S, AND
;RESET HUNG DEVICE TIMEOUT COUNT
MOVEI T1,INTENB ;Set to take an interrupt
BSIO T1,@PPS(F) ;Do so (may wait for a char to punch or feed)
POPJ P, ;RETURN
PTPIN2: LDB T1,PIOMOD##
TLO S,IOFST+PTPFED+IO ;IOFST:=PTPFED:=IO:=1
TLZ S,PTPBIN+PTPIB ;CLEAR BINARY AND IMAGE BINARY BITS
CAIN T1,IB ;IMAGE BINARY?
TLO S,PTPIB ;YES
CAIN T1,B ;MODE=BINARY?
TLO S,PTPBIN ;YES, PTPBIN:=1
MOVEI T1,PTPFDN ;PTPCNT:=PTPFDN
MOVEM T1,PTPCNT##(F)
PUSHJ P,SETBYT## ;SETBYT
HLLM T1,DEVPTR(F) ;PTPPTR0-5:=PTPPTR12-13:=0,PTPPTR6-11:=BYTE
;SIZE;
JRST PTPIN1
PTPONL: MOVE T1,PPS(F) ;Get CSR address
PUSHJ P,UBGOOD## ;Alive?
POPJ P, ;No, off-line
MOVEI T2,ERR ;Error set?
TION T2,(T1) ; ...
AOS (P) ;No, on-line
POPJ P, ;Return
Subttl Punch Interrupt Service
PTPINT::
RDIO T1,@PPS(F) ;Read Punch status
MOVEM T1,DEVSTS(F) ;Save for watchers
TRNE T1,ERR ;Out of tape?
JRST NOTAPE ;Yes, stop
MOVE S,DEVIOS(F) ;S:=C(PTPIOS)
TLNE S,PTPFED ;FEED REQUEST? (PTPFED=1?)
JRST PTPS2 ;YES
PUSHJ P,IOSET## ;J=C(DEVCTR)
;S:=C(PTRIOS)
TLZE S,IODISC ;DISCONNECT? (IODISC=1?)
JRST PTPADV ;YES
TLZE S,IOFST ;IOFST=1? IOFST:=0
JRST PTP9 ;YES
TLNN S,PTPBIN+PTPIB ;BINARY PUNCH MODE?
JRST PTP3 ;NO
;Here when processing binary output
MOVE T1,PTPCHA##(F) ;BINARY OUTPUT BYTE SIZE=36
ROT T1,6
MOVEM T1,PTPCHA##(F)
ANDI T1,77 ;T1:=XX, SIXBIT SUB-BYTE
ADDI T1,200
WRIOB T1,@PPB(F) ;Punch 10xxxxxx (2XX)
SOSL PTPCNT##(F) ;C(PTPCNT):=C(PTPCNT)-1. WORD DONE?
JRST STOIOS## ;NO
SOSL DEVCTR(F) ;C(PTPCTR):=C(PTPCTR)-1. J COUNT .LT. 0?
JRST PTPB1 ;NO
TLNE S,PTPIB ;IMAGE BINARY?
TLOA S,IODISC ;YES, SUPPRESS TAPE FEED.
TLO S,IODISC+PTPFED ;IODISC:=PTPFED:=1
MOVEI T1,10
MOVEM T1,PTPCNT##(F) ;PTPCNT:=10
JRST STOIOS##
;Here to set up for next binary word
PTPB1: MOVEI T1,5 ;PTPCNT:=5
MOVEM T1,PTPCNT##(F)
MOVE U,@DEVPTR(F) ;PTPCHA:=OUTPUT DATA WORD
AOS DEVPTR(F) ;PTPPTR:=C(PTPPTR)+1. ADVANCE J POINTER.
MOVEM U,PTPCHA##(F)
JRST STOIOS##
;Here when ready to punch next character in ASCII mode
PTP3: MOVE U,PTPCHA##(F) ;Get character
WRIOB U,@PPB(F) ;Punch it
TRNE S,14 ;IS MODE AN ALPHA MODE
JRST PTP1 ;NO
CAIE U,HORTAB ;HORIZONTAL OR VERTICAL TAB?
CAIN U,VERTAB
JRST PTPP1 ;YES
CAIE U,FORMFD ;FORM FEED?
JRST PTP1 ;NO
TLO S,PTPFED+PTPEOL ;PTPFED:=PTPEOL:=1
MOVEI U,20
MOVEM U,PTPCNT##(F) ;PTPCNT:=20
JRST STOIOS##
;Here with no special fill initiated. See if more in this buffer
PTP1: SOSGE DEVCTR(F) ;C(PTPCTR):=C(PTPCTR)-1. IS C(PTPCTR) .LT. 0?
JRST PTP5 ;YES
ILDB T3,DEVPTR(F) ;T3:=OUTPUT J
LDB T1,PIOMOD##
CAIN T1,I ;MODE=IMAGE?
JRST PTP6 ;YES
IORI T3,200 ;NO, INSERT EIGHTH HOLE
TRNN T1,14 ;AN ASCII MODE?
PUSHJ P,PEVEN8## ;YES. TURN EIGHTH HOLE OFF IF
; APPROPRIATE TO GET EVEN PARITY
JUMPE T3,PTP1 ;IF AN ASCII NULL, IGNORE IT.
; THEY ARE PUT IN BY PTPFED STUFF
; ELSE FALL INTO PTP6
;Here to set up char to punch at next interrupt
PTP6: MOVEM T3,PTPCHA##(F) ;PTPCHA:=OUTPUT J
JRST STOIOS##
PTPS2: SETZB T1,PTPCHA##(F) ;PUNCH FEED
WRIOB T1,@PPB(F)
SOSG PTPCNT##(F) ;COUNT FEED LINES
TLZ S,PTPFED ;PTPFED:=0
MOVEM S,DEVIOS(F) ;PTPIOS:=C(S)
POPJ P, ;Dismiss
PTP5: TLO S,IODISC ;IODISC:=1
JRST STOIOS##
PTPBN: MOVEI T2,@DEVOAD(F) ;T2:=BUFFER ADDRESS
PUSHJ P,CKS12## ;T1:=CALCULATE CHECKSUM
ADD T2,DEVOAD(F)
HLLM T1,@T2 ;STORE CHECKSUM IN LEFT HALF OF FIRST BUFFER DATA WORD.
JRST PTPB1
;Here at end of buffer, see if can start a new one
PTPADV: PUSHJ P,ADVBFE## ;ADVANCE BUFFER
JRST PTPDSC ;EXIT1. NEXT BUFFER EMPTY
PUSHJ P,SETIOD## ;IN A WAIT? IOW:=0
;Here to start a new buffer
PTP9: TLZ S,IOFST ;IOFST:=0
MOVE T1,DEVOAD(F)
AOS T1
HRRM T1,DEVPTR(F) ;PTPPTR18-35:=C(PTPADR18-35)+1
HRRZ J,@T1 ;J:=WORD COUNT
LDB T2,PTP91 ;PICK UP BYTE SIZE
PUSHJ P,ITMCT1## ;J:=WORD COUNT*[36/BYTE SIZE]
MOVEM J,DEVCTR(F) ;PTPCTR:=C(J)
JUMPE J,PTPADV ;IS J COUNT=0?
TLNE S,PTPBIN ;BINARY PUNCH MODE?
JRST PTPBN ;YES
TLNN S,PTPIB ;IMAGE BINARY?
JRST PTP1
AOS DEVPTR(F) ;YES
SOS DEVCTR(F)
JRST PTPB1
PTP91: POINT 6,DEVPTR(F),11
PTPP1: MOVEI U,RUBOUT ;PTPCHA:=RUBOUT
MOVEM U,PTPCHA##(F)
TLO S,PTPEOL ;PTPEOL:=1
JRST STOIOS##
PTPDSC: PUSHJ P,PTPREL ;CLEAR PTP CONTROL REG AND CONSO BITS
TRZ S,IOACT ;IOACT:=0
TLO S,IOFST ;IOFST:=1
;IN A WAIT? IOW:=0
PUSHJ P,SETIOD## ;YES. IOWS:=1
JRST STOIOS## ;STORE S, RESET HUNG TIMEOUT COUNT AND
;DISMISS INTERRUPT
;WHEN END OF TAPE ENCOUNTERED, COME HERE TO FORCE A HUNG DEVICE
NOTAPE: MOVEI T1,INTENB ;Get interrupt enable
BCIO T1,@PPS(F) ;Turn the PTP off
POPJ P, ;Now dismiss the interrupt
END