perm filename BR11.4[KL,SYS] blob
sn#209166 filedate 1976-04-03 generic text, type C, neo UTF8
COMMENT ā VALID 00021 PAGES
C REC PAGE DESCRIPTION
C00001 00001
C00002 00002 MODIFICATION HISTORY
C00003 00003
C00005 00004
C00007 00005
C00009 00006
C00011 00007
C00014 00008
C00016 00009
C00020 00010
C00022 00011
C00025 00012
C00027 00013
C00031 00014
C00034 00015
C00036 00016
C00038 00017
C00042 00018
C00044 00019
C00047 00020
C00050 00021
C00053 ENDMK
Cā;
;;;MODIFICATION HISTORY
;;;
;;; 15 NOV 75 OBTAINED FROM DEC (KLDCP REV 7)
;;; 15 NOV 75 CONVERTED TO PALX FORMAT
;;; 30 MAR 76 MODIFIED TO COEXIST WITH ITS IOELEVEN PROGRAM
.SBTTL DTE20 INITIALIZATION ROUTINE, 9-SEPTEMBER-75
DTEINI: TST $ONETM ;HAVE WE GONE THROUGH THIS ONCE BEFORE ?
BNE 3$ ;BR IF YES
MOV #DTEADR,R0
11$: MOV #16.,R2
MOV #.DELAY,R1
1$: MOV R0,(R1)+ ;SETUP DTE20 INDIRECT ADDRESS POINTERS
INC R0
INC R0
DEC R2
BNE 1$
3$: SETFLG
$ONETM
MOV #$STJRS,R0 ;SETUP "JRST" START INSTRUCTION
MOV #$$STJRS,R1 ;MUST BE IN STORAGE BECAUSE
MOV (R0)+,(R1)+ ;THE JRST ADR IS VARIABLE
MOV (R0)+,(R1)+
MOV (R0)+,(R1)+
MOV #$PAGDFL,R0 ;SETUP "DATAO PAG,0" DEFAULT ARGUMENT
MOV #PAGDFL,R1 ;MUST BE IN STORAGE BECAUSE THE CURRENT
MOV (R0)+,(R1)+ ;AC BLOCK SELECTION IS VARIABLE
MOV (R0)+,(R1)+
MOV (R0)+,(R1)+
CLR R0
SETMPH ;SET M-BOX PHASE
RTS PC
$PAGDFL:WD36 7000,0040,0000 ;LD'S & NO ST ACC
.EVEN
JRST==254
$STJRS: I10 JRST,0,,0
.EVEN
$DTEBAS:MOV .DELAY,R0
EXIT
.SBTTL ROUTINE TO READ THE EBUS VIA THE DTE20
;THIS IS THE ROUTINE TO READ 36 BITS FROM THE EBUS
;THE CALL REQUIRES THE DIAGNOSTIC FUNCTION TO BE EXECUTED
;TO BE IN REGISTER R0,RIGHT JUSTIFIED.
;CALLING SEQUENCE:
; CALL-1: MOV #DIAG FUNCTION,R0
; CALL: DFRD
$DFRDT: MOV @$EMADR,R0 ;PICKUP TRAILING PARAMETER
ADD #2,12(SP) ;SKIP RETURN
$DFRD: JSR PC,$KLCK1 ;CHECK KL10 CLOCK RUNNING
ASL R0 ;MAKE DIAG FCN IN CORRECT BITS
SWAB R0 ;MAKE DIAG FCN IN CORRECT BYTE
BIS #DCOMST!DFUNC!DIKL10,R0 ;SET CORRECT DTE20 BITS
MOV R0,@.DIAG1 ;EXECUTE THE FUNCTION
$DFXX: WFZERO DCOMST ;WAIT FOR DONE FLAG
JSR PC,$KLCK2 ;RESTART CLOCK IF NECESSARY
EXIT
$DFTIM: CLR TENRUN
PMSG <?DF TIMEOUT AT >
MOV R1,R0
PNTOCT
PMSG <PC = >
MOV 16(SP),R0 ;GET ADDRESS OF CALL
$DFTMX: TST -(R0)
PNTOCT
JMP $CNTLC
$ECTIM: PMSG <?CLK>
$DFTM1: PMSG < ERR AT >
MOV R1,R0
BR $DFTMX
.SBTTL ROUTINE TO EXECUTE DIAG FUNCTION VIA DTE20
;THIS IS THE ROUTINE TO EXECUTE A NON-DATA
;DIAGNOSTIC FUNCTION. THE CALL REQUIRES THE
;DIAGNOSTIC FUNCTION TO BE EXECUTED TO BE IN
;REGISTER R0,RIGHT JUSTIFIED
;CALLING SEQUENCE:
; CALL-1: MOV #DIAG FUNCTION,R0
; CALL: DFXCT
;DIAGNOSTIC FUNCTION EXECUTE, TRAILING PARAMETER
$DXCTT: MOV @$EMADR,R0 ;PICKUP TRAILING PARAMETER
ADD #2,12(SP) ;SKIP RETURN
BR $DFXCT
;DIAGNOSTIC FUNCTION EXECUTE, SINGLE STEP KL10 CLOCK
$DFSCLK:CLR KLCLKR ;CLEAR KL10 CLOCK RUNNING
MOV #DCOMST!DFUNC!<SSCLK*1000>,@.DIAG1
BR $$DFX1
;DIAGNOSTIC FUNCTION EXECUTE
$DFXCT: CMP R0,#001 ;KL10 CLOCK START FUNCTION ?
BEQ 1$ ;YES
CMP R0,#007 ;ANY OTHER CLOCK CONTROL FUNCTION ?
BGT 2$ ;NO
CLR KLCLKR ;YES, CLEAR LOGICAL CLOCK RUN FLAG
BR 2$
1$: MOV #-1,KLCLKR ;CLOCK START, SET LOGICAL CLOCK RUN FLAG
2$: ASL R0 ;MAKE DIAG FCN IN CORRECT BITS
SWAB R0 ;MAKE DIAG FCN IN CORRECT BYTE
BIS #DCOMST!DFUNC,R0 ;SET CORRECT DTE20 BITS
MOV R0,@.DIAG1 ;EXECUTE THE FUNCTION
$$DFX1: WFZERO DCOMST ;WAIT FOR DONE
EXIT ;RETURN
;DIAGNOSTIC FUNCTION EXECUTE, FAST
$DFXFST:ASL R0 ;DIAG FUNCTION TO CORRECT BITS
SWAB R0
BIS #DCOMST!DFUNC,R0
MOV R0,@.DIAG1 ;EXECUTE THE FUNCTION
BR $$DFXDN
;KL10 CLOCK RUNNING CONTROLS
$KLCK1: TST KLCLKR ;KL10 CLOCK RUNNING ?
BEQ $KLCK4 ;NO
MOV #DCOMST!DFUNC!<STPCLK*1000>,@.DIAG1
$$DFXDN:
$KLCK3: WFZERO DCOMST
$KLCK4: RTS PC
$KLCK2: TST KLCLKR ;WAS CLOCK RUNNING ?
BEQ $KLCK4 ;NO
MOV #DCOMST!DFUNC!<STRCLK*1000>,@.DIAG1
BR $KLCK3
FFDEP: DEP ;DTE20 DEPOSIT/EXAM BIT
;DIAGNOSTIC FUNCTION, WRITE IR
$DFWIR: DFWRT ;THE LOAD AR FUNCTION IS ALREADY SETUP
MOV #DCOMST!DFUNC!<IRLOAD*1000>,@.DIAG1
JSR PC,$$DFXDN ;STROBE DATA FROM AD TO IR
EXIT
.SBTTL ROUTINE TO WRITE 36 BITS TO THE EBUS
;THIS IS THE ROUTINE TO WRITE 36 BITS TO THE EBUS
;THE ROUTINE REQUIRES THAT THE ADDRESS OF THE DATA
;TO BE WRITTEN IS IN REGISTER R1. THE DIAGNOSTIC
;FUNCTION WHICH DOES THE WRITE MUST BE RIGHT
;JUSTIFIED IN REGISTER R0.THE DATA TO BE WRITTEN MUST
;BE IN 5 CONSECUTIVE BYTES AS FOLLOWS:
; .BYTE EBUS BITS 28-35
; .BYTE EBUS BITS 20-27
; .BYTE EBUS BITS 12-19
; .BYTE EBUS BITS 04-11
; .BYTE EBUS BITS 00-03
;CALLING SEQUENCE:
; CALL-2: MOV #ADDR,R1
; CALL-1: MOV #DIAG FCN,R0
; CALL: DFWRT
$DFWRT: JSR PC,$KLCK1 ;KL10 CLOCK RUNNING ?
PUSH R1 ;SAVE DESTINATION FOR POSTERITY
BIT #1,R1 ;DATA ON WORD BOUNDRY ?
BEQ 2$ ;YES
MOV #XXDAT,R5
MOVB (R1)+,(R5)+ ;PUT BITS 28-35 INTO CORE WORD
MOVB (R1)+,(R5)+ ;PUT BITS 20-27 INTO CORE
MOV -(R5),@.DAT3 ;PUT BITS 20-35 INTO DTE20
MOVB (R1)+,(R5)+ ;PUT BITS 12-19 INTO CORE WORD
MOVB (R1)+,(R5)+ ;PUT BITS 4-11 INTO CORE WORD
MOV -(R5),@.DAT2 ;PUT BITS 4-19 INTO DTE20
MOVB (R1)+,(R5) ;PUT BITS 0-3 INTO CORE WORD
BIC #177760,(R5) ;OFF TRASH
MOV (R5),@.DAT1 ;BITS 0-3 INTO DTE20
1$: MOV #DIKL10!DSEND,@.DIAG1 ;SET BIT TO DIAGNOSE KL10
MOV FFDEP,@.TENA1 ;SET DEPOSIT BIT OF DTE20
MOV FFDEP,@.TENA2 ;DO A PSEUDO DEPOSIT
WFONE DEXDON ;WAIT FOR A FLAG
ASL R0 ;GET DIAG FCN IN BIT POSITION
SWAB R0 ;GET DIAG FCN IN BYTE POSITION
BIS #DCOMST!DSEND!DIKL10!DFUNC,R0 ;SET DTE20 BITS
MOV R0,@.DIAG1 ;EXECUTE THE DIAGNOSTIC FUNCTION
POP R0 ;RESTORE WHERE GOT DATA
JMP $DFXX ;WAIT FOR DONE & EXIT
2$: MOV (R1)+,@.DAT3 ;BITS 20-35
MOV (R1)+,@.DAT2 ;BITS 4-19
MOV (R1),@.DAT1 ;BITS 0-3
BR 1$
.SBTTL ROUTINE TO DO EBUS READ, THEN STORE DATA SOMEPLACE
;ENTER THIS ROUTINE WITH R0 CONTAINING DIAGNOSTIC FUNCTION TO EXECUTE
;AND R1 CONTAINING ADDRESS OF BUFFER WHERE DATA SHOULD BE PLACED
$DFRDMV:DFRD ;GO READ KL10 DATA
PUSH R1 ;SAVE DESTINATION
MOV .DAT3,R0 ;GET ADDRESS OF DTE20 REG
MOVB (R0)+,(R1)+ ;DATA FROM DTE TO CORE
MOVB (R0)+,(R1)+ ;DATA FROM DTE TO CORE
MOVB (R0)+,(R1)+ ;DATA FROM DTE TO CORE
MOVB (R0)+,(R1)+ ;DATA FROM DTE TO CORE
MOVB (R0)+,(R1)+ ;DATA FROM DTE TO CORE
POP R0 ;RESTORE REG R1
EXIT
;DIAGNOSTIC FUNCTION WRITE, TRAILING PARAMETER
$DWRTT: MOV $EMADR,R5
MOV (R5)+,R1 ;DATA ADDRESS TO R1
MOV (R5),R0 ;DIAG FUNCTION TO R0
ADD #4,12(SP) ;RETURN OVER TRAILING PARAMETERS
BR $DFWRT
.SBTTL MASTER RESET ROUTINE
;THIS IS A ROUTINE TO DO A MASTER RESET.
$MRESET:PUSH R0 ;SAVE REGISTERS
TST TENRUN ;PDP-10 PRESENTLY RUNNING ?
BEQ 90$ ;BR IF NOT
TENSP ;STOP TEN
CLR TENCLK ;NOW TEN MUST NOT NEED CLOCK INTERRUPTS ANY MORE
90$: RESET ;RESET ANY RANDOM PERIPHERALS ON THE 11
CLR ITSFLG ;THAT WAS THE END OF I.T.S.!
MOV #DRESET,@.DIAG2 ;CLEAR DTE20 DIAG2
MOV #DON10C!ERR10C!INT11C!PERCLR!DON11C!ERR11C,@.STDTE ;CLEAR DTE20 STATUS
DFWRTT ;WRITE TO CLOCK
CLKDFL ;SET CLOCK TO DEFAULT
LDSEL
CLR KLCLKR ;CLEAR KL10 CLOCK RUNNING
MOV #LLISTL,R1 ;MUST EXECUTE TEN DIAG FUNCTIONS IN MR
MOV #LLIST,R2 ;ADDRESS OF FUNCTIONS INTO R2
1$: MOVB (R2)+,R0 ;FUNCTION TO R0 FOR THE EXECUTE CALL
JSR PC,$DFXFST ;EXECUTE THE DIAGNOSTIC FUNCTION
DEC R1 ;DECREMENT COUNT OF # OF FUNCTIONS LEFT
BNE 1$ ;CONTINUE TILL DONE
MOV #3,R4 ;SYNC MBOX NXM LOGIC
2$: DFRDT ;TEST A CHANGE COMING L
162
BIT #BIT3,@.DAT3
BEQ 3$ ;ASSERTED, CONTINUE
MOV #DCOMST!DFUNC!<SSCLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;DO ONE MBOX CLOCK
DEC R4 ;DONE 3 CLOCKS ?
BGT 2$ ;NO, TRY AGAIN
3$: MOV #DCOMST!DFUNC!<CECLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;CONDITIONAL EBOX CLOCK
MOV #DCOMST!DFUNC!<CLRMR*1000>,@.DIAG1
JSR PC,$$DFXDN ;CLEAR MR
MOVB (R2)+,R0
JSR PC,$DFXFST ;SET IR DECODE
MOVB (R2)+,R0 ;GET THE NEXT FUNCTION FROM THE LIST
MOV #WREADY,R1 ;CLEAR A 36 BIT BUFFER FOR SENDING DATA
MOV R1,R5
CLR (R5)+ ;CLEAR A WORK AREA
CLR (R5)+
CLR (R5)
DFWRT ;WRITE 0'S TO EBUS & PREVENT SBUS RESET
MOVB #12,(R1)
MOVB (R2)+,R0 ;GET NEXT DIAG FUNCTION
DFWRT ;LOAD MEMORY TO CACHE SELECTOR
POP R0
EXIT
;MASTER RESET DIAGNOSTIC FUNCTION LIST
LLIST: .BYTE STPCLK ;STOP CLOCK
.BYTE SETMR ;SET MASTER RESET
.BYTE STRCLK ;START CLOCK
.BYTE LDBRR ;LOAD BURST REGISTER RIGHT
.BYTE LDBRL ;LOAD BURST REGISTER LEFT
.BYTE LDDIS ;LOAD CLOCK DISTRIBUTION REGISTER
.BYTE LDCHK1 ;LOAD PARITY CHECK REGISTER
.BYTE LDCHK2 ;LOAD EBOX INTERNAL CHECK REGISTER
.BYTE LDCHAN ;INITIALIZE CHANNELS
.BYTE STPCLK ;STOP CLOCK
LLISTL==.-LLIST ;BUT THE LAST 3 ARE SPECIAL
.BYTE ENIOJA ;SET IR DECODE TO KL10 MODE
.BYTE 76 ;D.F. TO CONTROL EBUS REG
.BYTE LDMBXA ;LOAD MEMORY TO CACHE SELECTOR
.EVEN
.SBTTL CONTROL RAM ADDRESS ROUTINE
$WWADR: PUSH R1 ;SAVE R1
TST R0 ;IF BIT 15 SET, AVOID MASTER RESET
BMI 1$
BIT #BIT14,R0 ;IF BIT 14 SET, SPECIAL RESET
BEQ 2$
JSR PC,$SPCMR ;SPECIAL MASTER RESET
BR 1$
2$: MRESET
1$: BIC #BIT15!BIT14,R0 ;CLEAR CONTROL BITS ANYWAY
MOV #WREADY+2,R5
CLR (R5) ;CLEAR A WORK AREA
CLR -(R5)
PUSH R0
JSR PC,99$ ;GO LOAD EBUS BITS 00-05
MOV #LCRDAL,R0 ;WILL WRITE BITS 00-04 OF CR-ADR
DFWRT
POP R0 ;GET COPY OF ORIGINAL CR-ADR
SWAB R0 ;GET BITS 00-04
ASR R0 ;TO LOW ORDER BITS
ASR R0 ;OF R0.
JSR PC,99$ ;GO LOAD EBUS BITS 00-05
MOV #LCRDAR,R0 ;WILL WRITE BITS 5-10 OF CRADR
DFWRT
POP R1 ;RESTORE R1
EXIT
99$: BIC #77,R0 ;DEAL ONLY WITH 6 BITS
MOVB R0,WREADY+3 ;MOV TO EBUS BITS 4 & 5
SWAB R0
MOVB R0,WREADY+4 ;MOV TO EBUS BITS 0,1,2, & 3
MOV R5,R1 ;ADDRESS FOR DFWRT
RTS PC
.SBTTL WCRAM ROUTINE
$WCRAM: MOV R1,R2 ;GET COPY OF DATA ADDRESS
WWADR ;GO AND WRITE C-RAM ADDRESS
MOV #3,R4 ;FOUR LOOPS PER C-RAM WORD
1$: MOV #WREADY,R1 ;GET HOLDING AREA
MOVB (R2)+,(R1)+ ;REAL DATA TO HOLDING AREA
MOVB (R2)+,(R1)+
MOVB (R2),(R1)+
TST SIGNL ;SEE IF DESIRED BITS ON WORD BOUNDARY
BEQ 3$ ;AVOID RORING CODE IF YES
;THIS IS WONDERFUL RORING CODE
TSTB (R2)+ ;MUST INCREMENT DATA ADDR PTR
MOV #4,R0 ;FOUR SHIFTS IN THIS LOOP
2$: MOV #WREADY+3,R1 ;POINT TO HOLDING AREA
RORB -(R1) ;SHIFT & INCLUDE "C" BIT
RORB -(R1)
RORB -(R1)
DEC R0 ;DONE?
BNE 2$ ;LOOP BACK IF NO
;COMMON CODE
3$: COM SIGNL ;CHANGE BOUNDARY FLAG
BIC #177760,WREADY+2 ;ONLY 4 BITS COUNT
4$: JSR PC,$STRCH ;GO FILL IN EBUS SPACE
MOVB WRLIST(R4),R0 ;CORRECT WRITE FUNCTION TO R0
MOV #WREADY,R1 ;ADDRESS OF DATA
DFWRT
DEC R4 ;DONE ENTIRE RAM WORD?
BGE 1$ ;BR BACK IFNO
;CODE TO LOAD DISP 00-04
MOVB (R2),WREADY+4 ;GET DATA FOR DISP
ASRB WREADY+4 ;SHIFT DATA
RORB WREADY+3 ;TO EBUS BITS
ASRB WREADY+4 ;00-05
RORB WREADY+3
DFWRTT ;WRITE
WREADY ;DATA ADDRESS
LCRAM5 ;DIAG FUNCTION
EXIT ;DONE
WRLIST: .BYTE LCRAM1 ;CRAM BITS 00-19
.BYTE LCRAM2 ;CRAM BITS 20-39
.BYTE LCRAM3 ;CRAM BITS 40-59
.BYTE LCRAM4 ;CRAM BITS 60-79-EVEN
.EVEN
$STRCH: MOV WREADY,R0 ;GET UNSPACED DATA
MOVB WREADY+2,WREADY+3 ;PUT C-RAM 0-3 BITS INTO CORRECT CORE
CLR R3 ;NO JUNK LEFT IN R3
SEC ;SET "C" BIT TO USE AS FLAG
1$: MOV #4,R5 ;FOUR SHIFTS BETWEEN BLANKS
2$: ROR R3 ;NEW DATA LEFT END OF DESTINATION
BCS 3$ ;IF FLAG FALLS OUT..DONE
ROR R0 ;ROTATE SOURCE BITS RIGHT
DEC R5 ;DONE 4 YET??
BGE 2$ ;BR IF NO
ROL R0 ;REPAIR ANY DAMAGES
CLC ;ZERO THE "C" BIT
ROR R3 ;AND ROLL ZEROES
BR 1$ ;AND CONTINUE
;GET HERE TO FINISH UP
3$: CLC ;ZERO "C" BIT AGAIN
ROL R0 ;BITS 4-7
ROL R0 ;MUST BE CORRECTED
MOV R3,WREADY ;BITS 8-19 INTO CORE
MOVB R0,WREADY+2 ;BITS 4-7 INTO CORE
RTS PC ;DONE
;SPECIAL BASIC MASTER RESET
$SPCMR: PUSH <R0,R1,R2>
CLR KLCLKR ;CLEAR KL10 CLOCK RUNNING
MOV #$SMRLST,R1 ;COMMAND ADR TO R1
MOV #4,R2 ;FOUR COMMANDS
1$: MOV (R1)+,@.DIAG1
JSR PC,$$DFXDN ;EXECUTE FUNCTION
DEC R2
BNE 1$
POP <R2,R1,R0>
RTS PC
$SMRLST:.WORD DCOMST!DFUNC!<SETMR*1000>
.WORD DCOMST!DFUNC!<STRCLK*1000>
.WORD DCOMST!DFUNC!<STPCLK*1000>
.WORD DCOMST!DFUNC!<CLRMR*1000>
.SBTTL RCRAM ROUTINE
$RCRAM: TST R0 ;IS R0 NEG
BMI 1$ ;READ CURRENT CR IF YES
WWADR ;EXAMINE ADDRESS IN R0 IF HERE
MOV #DCOMST!DFUNC!<SECLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;CLOCK ADDRESS CONTENTS TO C.R.
1$: MOV #$BUFRC+10.,R3 ;GET BUFFER ADDR FOR C-RAM CONTENTS
MOV #$RDLST,R4 ;GET DIAG FUNCTION LIST
2$: MOVB (R4)+,R0 ;DIAG FUNCTION
DFRD
MOV #WREADY,R1 ;DESTINATION OF READ/MOVE
MOV .DAT3,R0
MOV (R0)+,(R1)+
MOV (R0)+,(R1)+
MOV (R0),(R1)
JSR PC,$SQASH ;GO CLEAR OUT BLANKS
MOV #WREADY+3,R0 ;ADDRESS OF DATA JUST READ
MOVB -(R0),-(R3) ;BITS 16-19 TO BUFFER
TST SIGNL2 ;CHECK TRAFFIC LIGHT
BNE 4$ ;BR TO RORING IF WRONG BOUNDARY
3$: MOVB -(R0),-(R3) ;BITS 20-27 TO WORK AREA
MOVB -(R0),-(R3) ;BITS 28-35 TO WORK AREA
COM SIGNL2 ;CHANGE SIGNAL
BR 2$ ;GET MORE DATA
4$: ASLB (R3) ;NEED TO FIX A HALF BYTE
ASLB (R3)
ASLB (R3)
ASLB (R3)
PUSH R0 ;DON'T LOSE DATA ADDRESS
MOV #4,R0 ;DO NEXT LOOP FOUR TIMES
10$: MOV R3,R2 ;ADDRESS OF DATA TO R2
ROLB (R2)+ ;SHIFT AND DON'T FORGET "C"
ROLB (R2)+
ROLB (R2)+
ROLB (R2)+
DEC R0 ;ASSEMBLED COMPLETE HALF BYTE
BNE 10$ ;LOOP AGAIN IF NO
POP R0 ;RETRIEVE DATA ADDRESS
TSTB (R3)+ ;FIX DESTINATION ADDRESS
TST SIGNL3 ;CHECK SIGNAL
BNE 15$ ;DONE IF MINUS
COM SIGNL3 ;OTHERWISE CHANGE SIGNAL
BR 3$ ;CONTINUE
15$: MOVB WREADY+1,-(R3) ;ENDING UP
MOVB WREADY,-(R3) ;CRAM BITS 0-15 TO BUFFER
COM SIGNL3 ;SIGNL3 TO ZERO
COM SIGNL2 ;SIGNL2 TO ZERO
DFRDT
RCSPEC ;READ SPEC FIELD
MOV @.DAT2,R1 ;GET DISP 03,04
MOV @.DAT1,R0 ;GET DISP 00,01,02
ROL R1 ;JUSTIFY IN R0
ROL R0
ROL R1
ROL R0
BIC #177740,R0 ;CLEAR TRASH
MOVB R0,$BUFRC+12 ;SAVE IN BUFFER
MOV #$BUFRC+2,R0 ;RETURN DATA ADDRESS IN R0
BIC #5,(R0) ;CLEAR PARITY BITS
BIC #52525,-(R0) ;AND FIX ADDRESS
EXIT ;DONE
$RDLST: .BYTE RCRAM1 ;READ CRAM 0-19
.BYTE RCRAM2 ;READ CRAM 20-39
.BYTE RCRAM3 ;READ CRAM 40-59
.BYTE RCRAM4 ;READ CRAM 60-79-EVEN
$SQASH: MOV WREADY,R1 ;GET STRETCHED BITS 8-19
MOV WREADY+2,R2 ;GET STRECHED BITS 0-7
CLR R0 ;CLEAR A DESTINATION
SEC ;SET A DONE FLAG
ROR R0 ;AND ROLLIT INTO R0
1$: MOV #4,R5 ;FOUR BITS PER GROUP
2$: DEC R5 ;DONE A GROUP OF FOUR
BLT 20$ ;BRANCH IF NO
ASR R2 ;ROTATE SOURCE BITS RIGHT
ROR R1 ;ALL TWENTY OF THEM
ROR R0 ;BEGIN WITH FIRST FLAG INTO R0
BCC 2$ ;IF FLAG FALLS OUT..DONE
;HERE TO FINISH UP
ASR R1 ;MAKE LAST BLANKS
ASR R1 ;GO VERY FAR AWAY
MOV R0,WREADY ;STORE RESULTS IN CORE
MOV R1,WREADY+2 ;ALL DONE
RTS PC ;RETURN
20$: ASR R2 ;HERE TO SHIFT AWAY
ROR R1 ;THE PAIR
ASR R2 ;OF BLANKS HIDDEN
ROR R1 ;AMIDST THE REAL DATA
BR 1$ ;CONTINUE
.SBTTL MICNUL, FILL C-RAM LOCATIONS WITH ZEROS
$MICNUL:MOV R1,R2 ;NUMBER OF WORDS TO R2
MOV R0,R3 ;SAVE START ADDRESS
BIS #100000,R3 ;BYPASS MR AFTER FIRST TIME
MOV #ZEROS,R1
1$: WWADR ;WRITE C-RAM ADDRESS
MOV #3,R4
MOVB #LCRAM1,R0 ;1ST FUNCTION IS A WRITE
DFWRT
2$: MOVB FLST(R4),R0 ;DIAG FUNCTION
JSR PC,$DFXFST
DEC R4
BGE 2$ ;ZERO ALL BITS
INC R3 ;INCREMENT C-RAM ADDRESS
MOV R3,R0
DEC R2 ;FINISHED ALL WORDS YET ?
BGT 1$
10$: EXIT ;YES
FLST: .BYTE LCRAM5
.BYTE LCRAM4
.BYTE LCRAM3
.BYTE LCRAM2
.BYTE LCRAM1
.EVEN
.SBTTL MICFIL, C-RAM FILL WITH ONES ROUTINE
$MICFIL:MOV R1,R2 ;NUMBER OF WORDS TO R2
MOV R0,R3 ;SAVE ADDRESS
BIS #100000,R3 ;BYPASS MR AFTER FIRST TIME
MOV #TENMO,R1 ;36 BITS OF ONES
1$: WWADR ;WRITE C-RAM ADDRESS
MOV #4,R4
2$: MOVB FLST(R4),R0 ;DIAG FUNCTION
DFWRT
DEC R4 ;DO ALL BITS
BGE 2$
INC R3 ;INCREMENT C-RAM ADDRESS
MOV R3,R0
DEC R2 ;DONE ALL ADDRESSES YET ?
BGT 1$
10$: EXIT
.SBTTL WDRAM ROUTINE
$WDRAM: MOV R0,R2 ;COPY DRAM ADDRESS
ROR R0 ;CHECK IF ODD OR EVEN
BCC 1$ ;BR IF EVEN
JMP ADRERR ;ADDRESS ERROR IF ODD
1$: ROL R0 ;FIX ADDRESS
PUSH R1 ;SAVE POINTER TO DATA
DRAMAD ;GO WRITE DRAM ADDRESS
POP R3 ;PUT POINTER TO DATA IN R3
MOV (R3)+,R1 ;DATA INTO R1
JSR R5,DATEVE ;WRITE EVEN DATA
MOV (R3)+,R1 ;DATA INTO R1
JSR R5,DATODD ;WRITE ODD DATA
MOV (R3),R1 ;DATA INTO R1
JSR R5,DATCOM ;WRITE COMMON DATA
EXIT
.SBTTL RDRAM ROUTINE
$RDRAM: PUSH <R1,R0> ;SAVE R1,STORE DRAM ADDR ON STACK TOP
CLR R1 ;R1 IS AN INDEX COUNTER
1$: DRAMAD ;WRITE DRAM ADDRESS
MOV #DCOMST!DFUNC!<DRLTCH*1000>,@.DIAG1
JSR PC,$$DFXDN ;STROBE DATA TO LATCHES
DFRDT
DRJ710 ;FUNCTION TO READ J07,08,09,10
MOV @.DAT2,R0 ;GET J DATA 7-10
ASR R0 ;RIGHT JUSTIFY
ASR R0 ;J-FIELD DATA
BIC #177700,R0 ;CLEAR EXTRA
MOVB R0,RDRTMP(R1) ;SAVE DATA IN CORE
INC R1 ;INCREMENT INDEX
DFRDT
DRAMAB ;FUNCTION TO READ "A" & "B" FIELD
MOV @.DAT2,R0 ;GET A & B DATA
ASR R0 ;RIGHT JUSTIFY
ASR R0 ;IN R0
BIC #177700,R0 ;CLEAR EXTRA
MOVB R0,RDRTMP(R1) ;STORE IN CORE
INC R1 ;INCREMENT INDEX
;DECIDE IF THIS IS FIRST OR SECOND PASS
CMP R1,#3 ;INDEX UP TO 3 YET??
BGE 2$ ;ON OUT IF YES
POP R0 ;IF NO,GET DRAM ADDRESS
INC R0 ;GET ODD HALF OF EVEN/ODD PAIR
BR 1$ ;LOOP AGAIN
2$: DFRDT
DRJ1.4 ;FUNCTION TO READ J01-J04
MOV @.DAT2,R0 ;GET JDATA 01-04
ASR R0 ;RIGHT JUSTIFY
ASR R0 ;J1-J4 BITS
BIC #177760,R0 ;CLEAR UNWANTED
MOVB R0,RDRTMP+4 ;BIT SET TO CORE
MOV #RDRTMP,R0 ;PASS BACK DATA ADDRESS IN R0
POP R1 ;RESTORE R
EXIT
.SBTTL DRAM SUBROUTINES
$DRAMAD: MOV #DDRAM,R3 ;GET ADDRESS OF EBUS DATA
MOV R3,R4 ;GET A COPY IN R4
CMPB (R4)+,(R4)+ ;INCREMENT IT TO DDRAM+2
MOV R0,R2 ;PUT ACTUAL ADDRESS IN R2
COM R2 ;READY TO TEST ADDR BITS 0-2
BIT #700,R2 ;MAKE THE TEST
BEQ 1$ ;BR IF ADDR IS 7XX
;CODE FOR NON 7XX ADDRESSES
COM R2 ;WAS NOT 7XX,SO FIX ADDRESS
ASL R2 ;JUSTIFY ADDRESS IN
ASL R2 ;CORRECT BIT POSITION
ASL R2 ;NEED THREE SHIFTS
CLRB (R4)+ ;INCREMENT TO DDRAM+3
MOVB R2,(R4)+ ;MOVE ADDR BITS 4-8 TO EBUS DATA
SWAB R2 ;GET THE REST OF THE BITS
MOVB R2,(R4) ;MOVE ADDR BITS 0-3 TO EBUS DATA
4$: JSR PC,$SPCMR ;SPECIAL MASTER RESET
JSR R5,WIRAR ;GO TO DO THE ACTUAL WRITE
EXIT
;CODE FOR 7XX ADRESSES
1$: COM R2 ;FIX ADDRESS TO ORIGINAL STATE
ROR R2 ;PUT LOW ORDER BIT IN "C" BIT
BCS 2$ ;"C" SET MEANS IR BIT 12 MUST=1
CLRB (R4)+ ;NO "C" BIT MEANS IR BIT 12 MUST=0
BR 3$ ;GO TO MOVE ADDRESS TO EBUS DATA
2$: MOVB #200,(R4)+ ;SET IR BIT 12=1
3$: BIC #340,R2
MOVB R2,(R4)+ ;MOVE D-RAM ADDR TO EBUS BIT POSITION 7-11
MOVB #16,(R4) ;SET THE 7 FROM 7XX IN EBUS DATA
BR 4$
;WRITE THE IR
WIRAR: MOV #DDRAM,R1 ;EBUS DATA ALWAYS AT DDRAM
WIRAR1: MOV #LDAR,R0 ;FUNCTION TO LOAD AR
DFWIR
RTS R5
;NOW FOR COMMON LITTLE PIECES OF THE LOADING OF THE DRAM
DATCOM: MOV #LDRAM3,R0 ;GET DIAG FUN TO WRITE COMMON
ASL R1 ;JUSTIFY DATA FOR THE EBUS
ASL R1
BR CON2 ;GO WRITE IT
DATODD: MOV #LDRAM2,$DDRMS ;FUNCTION FOR J-FIELD A & B
MOV #LDRJOD,R0 ;FUNCTION FOR J-FIELD ODD
BR CON1 ;GO
DATEVE: MOV #LDRAM1,$DDRMS ;FUNCTION FOR J-FIELD A & B
MOV #LDRJEV,R0 ;FUNCTION J-FIELD EVEN
CON1: ASL R1 ;JUSTIFY PIECE I'M
ASL R1 ;INTERESTED IN FOR J-DATA FIELDS
PUSH R1 ;SAVE DATA TO BE SENT
JSR R5,CON2 ;WRITE J-DATA
POP R1 ;GET DATA AGAIN
SWAB R1 ;NOW I'VE GOT A & B
MOV $DDRMS,R0 ;GET CORRECT DIAG FUNCTION, & WRITE
CON2: MOVB R1,DDRAM+2 ;R1 ALWAYS HAS THE DATA
MOV #DDRAM,R1 ;I ALWAYS PUT IT IN DDRAM
DFWRT
RTS R5 ;NOW WRITE
;CLOCK DEFAULT PARAMETER ADDRESS
$CLKPRM:MOV #CLKDFL,R0 ;PUT ADDRESS IN R0
EXIT
.SBTTL M-BOX CLOCK BURST ROUTINE
$BURST: CLR KLCLKR ;CLEAR KL10 CLOCK RUNNING
MOV #$STDAT,R1 ;WORD POINTER TO R1
MOV R0,R2 ;BURST COUNT TO R2
BIC #177600,R2 ;SAVE LOWER 7 BITS
ROL R0
SWAB R0
CLR R3
BISB R0,R3 ;# OF 128. CLOCK MULTIPLES
BEQ 2$ ;NONE, DO BURST
1$: MOV #DCOMST!DFUNC!<STPCLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;CLEAR BURST MODE
CLR (R1)
MOV #LDBRR,R0
DFWRT ;CLEAR BURST REG RIGHT
MOV #10,(R1)
MOV #LDBRL,R0
DFWRT ;LOAD BURST REG LEFT
MOV #DCOMST!DFUNC!<BRCLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;BURST 128 CLOCKS
DEC R3 ;ANY MORE ?
BGT 1$ ;YES, DO 128 MORE
2$: MOV #DCOMST!DFUNC!<STPCLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;CLEAR BURST MODE
MOV R2,R3 ;NUMBER LEFT TO DO
BIC #177760,R2
MOV R2,(R1)
MOV #LDBRR,R0
DFWRT ;LOAD BURST REG RIGHT
SR R3,4
MOV R3,(R1)
MOV #LDBRL,R0
DFWRT ;LOAD BURST REG LEFT
MOV #DCOMST!DFUNC!<BRCLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;BURST THE CLOCK
EXIT
.SBTTL LOAD AR ROUTINE
; ROUTINE TO LOAD THE AR WITH AN INSTRUCTION TO BE EXECUTED.
; GETS THE MICROCODE TO THE HALT LOOP, AND THEN LINES UP THE
; MBOX PHASE CHANGE TIMING WITH EBOX SYNC BEFORE LOADING
; THE AR. THE LATTER IS NECCESSARY IN ORDER TO MAKE INSTRUCTION
; EXECUTION REPEATABLE AT THE CLOCK TICK LEVEL FOR "TRACE" AND
; FOR THE MBOX DIAGNOSTIC.
$LODAR: MOV R0,R3 ;SAVE DATA POINTER
MOV #DCOMST!DFUNC!<CLRRUN*1000>,@.DIAG1
JSR PC,$$DFXDN ;STOP EXECUTION
MOV #177,R0
BURST ;RUN CLOCK FOR FIXED PERIOD
MOV #DCOMST!DFUNC!<CECLK*1000>,@.DIAG1
JSR PC,$$DFXDN ;GET EBOX CLOCK FALSE
BIT #HALTLP,@.DIAG1
BNE 1$ ;IF AT HALT LOOP
3$: EXITERR
; NOW CALL ROUTINE TO GET MBOX IN PHASE
1$: JSR PC,$MBPHS
BCC 2$ ;BR IF ALL OK
BR 3$
2$: MOV R3,R1
MOV #LDAR,R0
DFWRT ;LOAD AR
EXIT
; SETMPH EMT ROUTINE TO SELECT WHICH MBOX PHASE TO SYNC UP TO
;DURING THE LODAR PROCESS. R0 SELECTS ONE OF FOUR PLACES TO SYNC.
; R0 = 0, A CHANGE COMING; R0 = 1, HALFWAY TWIXT A AND B
; R0 = 2, B CHANGE COMING; R0 = 3, HALFWAY TWIXT B AND A.
$SETMPH:MOV R0,$STODD ;SAVE FOR HALF-PHASE TEST
BIC #BIT0,R0 ;CLR ODD-EVEN BIT
MOV $STMTB(R0),$MPHDF ;SET POINTER
EXIT
$STMTB: .BYTE 162,10 ;A CHANGE COMING DF AND MASK
.BYTE 163,200 ;B CHANGE COMING DF AND MASK
.SBTTL MBOX PHASE ROUTINE
; ROUTINE TO PHASE THE MBOX WITH THE EBOX HALT LOOP.
; MICROCODE ASSUMPTIONS: THE HALT LOOP IS TWO INSTRUCTIONS
; THE FIRST IS AT AN EVEN ADDRESS AND HAS T=2T
; THE SECOND IS AT AN ODD ADDRESS AND HAS T=3T
; THIS CODE LOOKS FOR THE INTERSECTION OF THE EVEN ADDRESS,
; CLK SYNC TRUE, PHASE CHANGE COMING TRUE, AND THE SELECTED
; PHASE (A OR B CHANGE COMING). THE LATTER IS CHOSEN BY
; THE "SETMPH" EMT.
$MBPHS: MOV #20.,R2 ;SET TIMOUT VALUE
1$: MOV #1,R1 ;SET TICK COUNTER
DFRDT
102
BIT #BIT2,@.DAT3 ;BIT 33, CLK SYNC H
BEQ 41$ ;FALSE, TRY 1 CLOCK
DFRDT
144
BIT #BIT14,@.DAT2 ;BIT 5, CR ADR 10 H
BNE 42$ ;ODD, TRY 2 CLOCKS
DFRDT
164
BIT #BIT5,@.DAT3 ;BIT 30,PHASE CHANGE COMING L
BNE 45$ ;FALSE, TRY 5 CLOCKS
MOVB $MPHDF,R0
DFRD
CLR R0
BITB $MPHMK,@.DAT3 ;EITHER A OR B CHANGE COMING L
BEQ 2$ ;TRUE, EXIT
MOV #10.,R0 ;NEED 10 CLOCKS
2$: BIT #BIT0,$STODD ;WANT HALFWAY BETWEEN?
BEQ 3$ ;BR IF NOT
ADD #5,R0 ;FIVE MORE TICKS THEN
3$: BURST ;DO THIS BURST:0,5,10, OR 15
CLC
RTS PC ;WE'RE THERE
45$: ADD #3,R1 ;MAKE IT FOUR
42$: INC R1 ;MAKE IT TWO OR FIVE
41$: MOV R1,R0
BURST ;DO ONE TWO OR FIVE
DEC R2 ;COUNT TIMEOUT
BNE 1$
SEC
RTS PC ;TOOK TOO LONG, ERROR
.SBTTL VMA, VMAH, PC & ADDRESS BREAK ROUTINE
;ROUTINE TO READ ONE OF 4 REGISTERS ON THE VMA BOARD.
;ROUTINE RETURNS WITH R0 POINTING TO A 36 BIT WORD WITH
;THE DESIRED DATA JUSTIFIED AT BIT 35
$DFVMH: MOV #DPVMHD,R0 ;FUNCTION TO READ VMA HELD
BR $DFPC1
$DFPC: MOV #DPPC,R0 ;FUNCTION TO READ PC
$DFPC1: MOV #3,R5
MOV #273,R4 ;MASK FOR REGISTER OFFSET FROM BIT 35
BR $VMPC
$DFVMA: MOV #DPVMA,R0 ;DIAG FUNCTION TO READ VMA
BR $VMPC1
$DFADB: MOV #DPADB,R0 ;DIAG FUNCTION TO READ ADDRESS BREAK
$VMPC1: MOV #356,R4
CLR R5
$VMPC: PUSH R0
MOV #4,R2 ;FOUR READS PER REGISTER
MOV #VMADAT,R1 ;FIRST CLEAR ENTIRE 36-BIT BUFFER
CLR (R1)+
CLR (R1)+
CLR (R1)+
1$: MOV #WREADY,R1 ;PUT DFRD DATA HERE
DFRDMV
MOV #5,R0 ;MASK RECEIVED DATA, FIVE BYTES WORTH
2$: BICB R4,(R1)+
DEC R0
BGT 2$
MOV #WREADY+5,R1 ;NOW MOVE READ DATA
MOV #VMADAT+5,R0 ;TO VMA REGISTER DATA
BISB -(R1),-(R0)
BISB -(R1),-(R0)
BISB -(R1),-(R0)
BISB -(R1),-(R0)
BISB -(R1),-(R0)
ROLB (R0)+ ;AND NOW SHIFT 35 BITS
ROLB (R0)+ ;BY ONE BIT
ROLB (R0)+
ROLB (R0)+
ROLB (R0)+
DEC (SP) ;CREATE NEXT DIAG FUNCTION
MOV (SP),R0 ;TAKE IT OFF THE STACK
DEC R2 ;DONE FOUR FUNCTIONS YET?
BGT 1$ ;BR IF MORE TO DO
;ALL DONE READING DATA, NOW JUSTIFY CORRECTLY FOR THE RETURN MACHINE
3$: MOV #VMADAT+5,R0 ;MUST CORRECT BY OFFSET AMOUNT
RORB -(R0)
RORB -(R0)
RORB -(R0)
RORB -(R0)
RORB -(R0)
DEC R5 ;DONE YET?
BGT 3$ ;BR IF NO
;OFFSET MAY ORIGINALLY NEED TO BE GREATER THAN 0 IF
;VMA DIAG MIXERS NOT RIGHT JUSTIFIED AT EBUS BIT 35
4$: POP R0
MOV #VMADAT,R0
EXIT