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ROMF8.SRC
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ROMF8.SRC
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TTL ROMF8 - CONTROL AT FXXX - 12/22/80
SETDP $A0
*
* SYSTEM EQUATES
*
DIAORG EQU $C000
DIABLK EQU 3 DIAGNOSTIC BLOCK
CMOS EQU $C400
CMOS$ EQU $C480 WRITE PROTECTED
MAPC EQU $D000 FLOPPING ADDRESS
MAPCR EQU $A036
CREDIT EQU $A037
CUNITS EQU $A038
BUNITS EQU $A039
*
* CMOS RAM ALLOCATION
*
ORG CMOS
DIPFLG RMB 1 DIP SWITCH SET FLAG
SLOT1 RMB 4 LEFT COIN TOTAL
SLOT2 RMB 4 CENTER COIN TOTAL
SLOT3 RMB 4 RIGHT COIN TOTAL
TOTPDC RMB 4 TOTAL PAID CREDITS
TOTRPL RMB 4 TOTAL REPLAYS
BLLTIM RMB 4 BALL TIME IN MINS
BLLCNT RMB 4 TOTAL "BALLS" PLAYED
CMSDEF EQU *
CRHSTD RMB 12 FOR ALL TIME HSTD
CRHST1 RMB 12 ALL TIME #2
CRHST2 RMB 12
CRHST3 RMB 12
CRHST4 RMB 12
CRHST5 RMB 12
CRHST6 RMB 12
CRHST7 RMB 12
CREDST EQU * CREDITS BACKUP
DIPSW RMB 2 FOR DIPSW FUNCTIONS
ORG CMOS$-1 PUT IT ACCROSS BOUNDARY
CMOSCK RMB 2 FOR BOUNDARY BYTE
REPLAY RMB 4 REPLAY LEVEL
NSHIP RMB 2 NUMBER OF SHIPS/GAME
COINSL RMB 2 FOR COINAGE SELECT MODE
SLOT1M RMB 2 LEFT COIN MULT
SLOT2M RMB 2 CENTER COIN MULT
SLOT3M RMB 2 RIGHT COIN MULT
CUNITC RMB 2 COIN UNITS PER CREDIT
CUNITB RMB 2 COIN UNITS FOR BONUS
MINUNT RMB 2 MINIMUM REQD
FREEPL RMB 2 FREE PLAY MODE
GA1 RMB 2 GAME ADJUSTS - 1
GA2 RMB 2
GA3 RMB 2
GA4 RMB 2
GA5 RMB 2
GA6 RMB 2
GA7 RMB 2
GA8 RMB 2
GA9 RMB 2
GA10 RMB 2
*
* RESET PROCESSING
*
ORG $FB00 TEMPORARY!!!!!!
RESET CLR MAPC SETUP PIAS
LDX #$CC00
CLR 1,X
CLR 3,X
CLR 5,X
CLR 7,X
LDA #$C0
STA ,X
LDA #$FF
STA 2,X
CLR 4,X
CLR 6,X
LDA #4
STA 3,X
STA 5,X
STA 7,X
ORA #$10 SET FOR SLAM SW ON ^TRANS
STA 1,X AND PROGRAM
LDX #$C000 SET INTERESTING SCREEN COLORS
LDA #$C0
RESET1 STA ,X+
LDB #$B5
MUL
CMPX #$C010
BNE RESET1
ORCC #$80 SET AUTO CYCLE NOT FLAG <=================TEMPORARY
ANDCC #$EF CLEAR COMPREHENSIVE/INITIAL FLAG(I BIT)
*
* POWER UP RAM TEST
*
LDY #7 SET TEST COUNTER
CLRA
TFR A,DP CLEAR BAD RAM MAP(BIT 0-BLOCK 1, B1-BL2 , B2-BL3)
ANDCC #$BF INITIALIZE BAD RAM IN PAGE FLAG(F BIT)
CLRB
RAM2 TFR D,U SAVE SEED
LDX #0 GET STARTING ADDRESS INTO POINTER
RAM3 COMB RANDOM NUMBER ROUTINE
BITB #9
BNE RAM4
COMB
RORA
RORB
BRA RAM6
RAM4 COMB
BITB #9
BNE RAM5
RORA
RORB
BRA RAM6
RAM5 LSRA
RORB
RAM6 STD ,X++ LOAD INTO ADDRESS AND ADVANCE
EXG X,D WATCHDOG TEST
TSTB
BNE RAM6B
LDB #$38 RESET WATCHDOG
STB $C3FC
TFR CC,B CHECK COMPREHENSIVE/INITIAL FLAG
BITB #$10
BEQ RAM6A SKIP IF INITIAL
CLR MAPC SELECT PIA BLOCK
LDB $CC00 CHECK IF ADVANCE PRESSED AND AUTO UP
COMB
BITB #3
BEQ RAM11A TEST ABORTED, RETURN TO COMPREHENSIVE
RAM6A CLRB
RAM6B EXG X,D
CMPX #$C000 ADDRESS POINTER DONE?
BNE RAM3 NO, LOOP
TFR U,D GET SEED
LDX #0 GET STARTING ADDRESS INTO POINTER
RAM7 COMB RANDOM NUMBER ROUTINE
BITB #9
BNE RAM8
COMB
RORA
RORB
BRA RAM10
RAM8 COMB
BITB #9
BNE RAM9
RORA
RORB
BRA RAM10
RAM9 LSRA
RORB
RAM10 CMPD ,X++ CHECK FOR MATCH
BEQ RAM11 NO, ERROR
EXG D,Y SAVE ERROR
TFR CC,A CHECK COMPREHENSIVE/INITIAL FLAG
BITA #$10
BEQ RAM10A SKIP IF INITIAL
LDA #DIABLK ERROR, RETURN TO COMPREHENSIVE
STA MAPCR
STA MAPC AND IN HARDWARE
JMP VRAM10
RAM10A CLRA
EXG Y,D RECOVER COUNTER
ORCC #$40 SET BAD RAM IN PAGE FLAG
RAM11 EXG X,D END OF PAGE TEST
TSTB
BNE RAM17 PAGE NOT DONE
TFR CC,B CHECK COMPREHENSIVE/INITIAL FLAG
BITB #$10
BEQ RAM11B SKIP IF INITIAL
LDB $CC00 CHECK IF ADVANCE PRESSED AND AUTO UP
COMB
BITB #3
BNE RAM16 NOT YET, SKIP ERROR PROCESSING SAVE DP
RAM11A LDA #DIABLK TEST ABORTED, RETURN TO COMPREHENSIVE
STA MAPCR IN FLAG
STA MAPC
JMP VRAM20
RAM11B TFR CC,B GET CONDITION CODES
BITB #$40 CHECK BAD RAM IN PAGE FLAG
BEQ RAM16 RAM PAGE OK-SKIP ERROR PROCESSING
* ERROR PROCESSING
ANDCC #$BF CLEAR BAD RAM IN PAGE FLAG
TFR DP,B GET BAD RAM MAP
TFR A,DP SAVE ADDRESS
RAM12 SUBA #3 FIND BLOCK NUMBER
BCC RAM12
INCA
BNE RAM13
ORB #2 BLOCK 2
BRA RAM15
RAM13 INCA
BNE RAM14
ORB #1 BLOCK 1
BRA RAM15
RAM14 ORB #4 BLOCK 3
RAM15 TFR DP,A RECOVER ADDRESS
TFR B,DP SAVE BAD RAM MAP
*
RAM16 LDB #$38 RESET WATCHDOG
STB $C3FC
CLRB
RAM17 EXG X,D
CMPX #$C000 CHECK FOR END OF MEMORY
LBNE RAM7 NO?, LOOP
LEAY -1,Y
LBNE RAM2 REPEAT TEST
TFR CC,B
TSTB CHECK AUTO CYCLE NOT FLAG <================TEMPORARY
BMI RAM17B CLEAR, CONTINUE RAM TEST
LDB #DIABLK SELECT DIAGNOSTIC BLOCK
STB MAPCR IN FLAG
STB MAPC
JSR INIT INITIALIZE DIRECT PAGE VARIABLES
JMP VOUND0 NEXT TEST IN AUTO CYCLE
RAM17B BITB #$10 CHECK COMPREHENSIVE/INITIAL FLAG-SAVE RANDOM NUMBER
LBNE RAM2 COMPREHENSIVE, CONTINUE
* FIND GOOD RAM
LDA #$9E
TFR DP,B GET BAD RAM MAP
TSTB
BEQ RAM19 DP <= $9E, IF ALL RAM OK
RAM18 INCA DP <= $9F, IF (BLOCK 2 OR 3 BAD) AND 1 OK
LSRB DP <= $A0, IF BLOCK 1 BAD AND 2 OK
BCS RAM18 DP <= $A1, IF ONLY BLOCK 3 OK
RAM19 TFR A,DP DP <= $A2, IF ALL BLOCKS BAD, GOOD LUCK!
ADDA #$1C SET HARDWARE STACK AT TOP OF GOOD RAM BLOCK
CLRB
TFR D,S
JSR INIT SET UP FOR TEXT ROUTINES
*
* POWER UP ROM TEST
*
ROM0 LDU #ROMMAP GET ROM MAP ADDRESS
ROM1 LDA ,U GET ROM DESCRIPTOR BYTE
BEQ ROM9 NO ROM AT POSITION
ANDA #$70 EXTRACT ADDRESS
LSRA
ADDA #$C0
CLRB
TFR D,X INTO X REGESTER
LDD #0 ZERO CHECKSUM COUNTER
ROM2 ADDD ,X FAST CHECKSUM ADDER
BCC ROM3
ADDD #1
ROM3 ADDD 2,X
BCC ROM4
ADDD #1
ROM4 ADDD 4,X
BCC ROM5
ADDD #1
ROM5 ADDD 6,X
BCC ROM6
ADDD #1
ROM6 LEAX 8,X ADVANCE POINTER
EXG D,X CHECK IF DONE
TSTB
BNE ROM7
LDB #$38 RESET WATCHDOG
STB $C3FC
CLRB
BITA #7
BEQ ROM8
ROM7 EXG D,X
BRA ROM2 CONTINUE TESTING
ROM8 CMPX #0 CHECK CHECKSUM
BEQ ROM9
TFR CC,A GET COMPREHENSIVE/INITIAL FLAG
BITA #$10 TEST IT
BEQ IDIS20 DISPLAY INITIAL ERROR
LDA #DIABLK SELECT DIAGNOSTIC BLOCK
STA MAPCR IN FLAG
STA MAPC
RTS RETURN TO COMPREHENSIVE DIAGNOSTICS
ROM9 LEAU 1,U
CMPU #ROMMAP+24
BNE ROM1
TFR CC,A
BITA #$10 TEST COMPREHENSIVE/INITIAL FLAG
BEQ IDIS1 DISPLAY INITIAL ROM OK
LDA #DIABLK SELECT DIAGNOSTIC BLOCK
STA MAPC
RTS RETURN TO COMPREHENSIVE DIAGNOSTICS
*
* INITIAL TEST RESULTS DISPLAY
*
IDIS1 TFR DP,A CHECK IF RAM OK <== ROM OK STARTING POINT
CMPA #$9E
BNE IDIS10 BRANCH IF RAM BAD
* ROM OK, RAM OK
LDA #DIABLK
STA MAPCR SAVE STATUS
STA MAPC SELECT DIAGNOSTIC BLOCK
JSR VORAOK
JMP GAMEOV NOW GO TO GAME OVER
* ROM OK, RAM BAD
IDIS10 LDB #$40 BAD RAM INDICATION LEDS
STB $CC00
STB $CC02
LDA #DIABLK SELECT DIAGNOSTIC BLOCK
STA MAPCR IN FLAG
STA MAPC
JSR VOOKRB
JMP GAMEOV NOW GO TO GAME OVER
* ROM BAD
IDIS20 LDB #$80 BAD ROM INDICATION LEDS
STB $CC00
STB $CC02
LDA #DIABLK SELECT DIAGNOSTIC BLOCK
STA MAPCR IN FLAG
STA MAPC
JSR VOMBAD
JMP GAMEOV NOW TO GAME OVER
*
* STORE B,X BLOCK 0
*
STBXB0 PSHS A,CC
LDA MAPCR
PSHS A
CLR MAPCR
CLR MAPC
STB ,X
STBXB PULS A
STA MAPCR
STA MAPC
PULS CC,A,PC
*
* LOAD B ,X - BLOCK 0
*
LDBXB0 PSHS A,CC SAVE STATE
LDA MAPCR GET CURRENT ACTIVE BLOCK
PSHS A SAVE IT
CLR MAPCR MAKE IT 0
CLR MAPC AND IN HARDWARE
LDB ,X GET THE DATA
BRA STBXB FINISH ABOVE
*
* GAME OVER- ASSUMES BLOCK 3 REMAINS SELECTED!!!!
*
GAMEOV ORCC #$90 SET TO COMPR/NOT AUTO CYCLE
LDB #$38 GET DOGGY
LDX #$C3FC
BSR STBXB0 DO IT
CLR CREDIT REMOVE ANY LEFTOVERS
CLR BUNITS
CLR CUNITS
JSR SCRCLR CLEAR UP
JSR VPWRUP
LDB #$A5 COLOR LETTERS WHITE
LDX #LETCOL POINT TO IT
BSR STBXB0 SET COLOR UP
LDU #VGAMOV "GAME OVER"
LDX #$3880 SCREEN ADDRESS
JSR LJSR DO IT
FDB TV1
FCB 2 IN BLOCK 2 WRITE TEXT
LDB #$38 GET DOGGY
LDX #$C3FC
BSR STBXB0 DO IT
LDY #IGAMEO GIVE INSTRUCTIONS
JSR LJSR DO IT
FDB TV12
FCB 2
GAMOV1 LDX #$CC01 READ FOR SLAM TILT
JSR LDBXB0 AND SEE WHAT'S HAPPENING
BITB #$40 SLAM?
BEQ GAMOV2 NO
JMP RESET YES, GO BACK
GAMOV2 LDX #$CC00 NOW READ SWS
JSR LDBXB0 AND SEE IF ANY?
BITB #$2 ADV?
BEQ GAMOV3 NO, SEE IF ANY OTHERS
BITB #1 AUTO/MANUAL
BNE GAMOV4 AUTO-GO TO AUDIT
JMP VCROM0 MANUAL GO TO SELF TEST
GAMOV4 JMP VUDITG
GAMOV3 BITB #$04 RIGHT COIN?
BEQ GAMOV5 NO
JSR RCOINV
GOVERX LDY #100 DELAY
GOVER1 LDA #$B2
GOVER2 DECA
BNE GOVER2
LDB #$38 RESET WATCHDOG
LDX #$C3FC
JSR STBXB0 DO IT
LEAY -1,Y
BNE GOVER1 LOOP AROUND
BRA GAMOV1 MONITOR SWITCHES ONLY
GAMOV5 BITB #$20 CENTER COIN?
BEQ GAMOV6 NO
JSR CCOINV
BRA GOVERX DELAY THEN BACK
GAMOV6 BITB #$10 LEFT COIN?
BEQ GOVERX NO, DELAY
JSR LCOINV
BRA GOVERX EXIT AFTER 1/2 SEC
*
* SYSTEM FIRMWARE
*
*WRITE AN OBJECT TO SCREEN
*Y=OBJECT DESCRIPTOR ADDR
*D=SCREEN ADDR
*ALL SAVED
*REENTRANT
*
*
CWRIT PSHS A,B,X,Y,U
TFR D,X
LDD ,Y GET WIDTH,LENGTH
LDY 2,Y GET DATA
PSHS D SAVE WIDTH,HEIGHT
BITB #1 ODD LENGTH?
BNE CWRT1
*EVEN BYTE COUNT
CWRT00 SUBB #2
CWRT0 LDU B,Y
STU B,X
SUBB #2
BPL CWRT0
LDB 1,S
LEAX $100,X
LEAY B,Y
DECA
BNE CWRT00
BRA CWRTX
*ODD BYTE COUNT
CWRT1 DECB
LDA B,Y
STA B,X
SUBB #2
BMI CWRT3
CWRT2 LDU B,Y
STU B,X
SUBB #2
BPL CWRT2
CWRT3 LDB 1,S GET HEIGHT
LEAX $100,X
LEAY B,Y
DEC ,S DEC WIDTH
BNE CWRT1
CWRTX LEAS 2,S PULL TWO
PULS A,B,X,Y,U,PC
*
*COFF
*Y=OBJECT DESCRIPTOR ADDR
*D=SCREEN ADDR
*
COFF PSHS A,B,X,U
TFR D,X
LDD ,Y GET WIDTH ,HEIGHT
COFFA LDU #0
PSHS B SAVE HT
BITB #1 ODD LENGTH?
BNE COFF1 YES
*EVEN BYTE COUNT
COFF00 SUBB #2
COFF0 STU B,X
SUBB #2
BPL COFF0
LDB ,S GET HT
LEAX $100,X
DECA
BNE COFF00
BRA COFFX
*ODD BYTE COUNT
COFF1 DECB
CLR B,X
SUBB #2
BMI COFF3
COFF2 STU B,X
SUBB #2
BPL COFF2
COFF3 LDB ,S GET HT
LEAX $100,X
DECA
BNE COFF1
COFFX LEAS 1,S PULL HEIGHT
PULS A,B,X,U,PC
*
*BLOCK CLEAR
*X=ADDR, D=W,H
*
BLKCLR PSHS A,B,X,U
LDA MAPCR SAVE MAP
PSHS A
LDA 1,S
BRA COFFA
*
*SCREEN CLEAR
*
SCRCLR PSHS D,X,Y,U
LDU #$9C00
LDX #0
TFR X,Y
TFR X,D
SCLRLP PSHU X,Y,D
PSHU X,Y,D
PSHU X,Y,D
PSHU X,Y,D
PSHU X,Y,D
PSHU X 32 AT A CRACK
CMPU #0
BNE SCLRLP
PULS D,X,Y,U,PC
*
* INITIALIZE DP VARIABLES FOR TEXT/DIAG USE
*
INIT PSHS D SAVE STATE
CLR MESPT
CLR ASCNTR
LDA #DIABLK SELECT DIAG BLOCK
STA MAPCR INTO CURRENT
STA ASLAST
LDD #$FFFF INIT NUMBER
STD NUMBER
PULS D,PC GO BACK
*
* CMOS PRIMITIVE FOR READING
*
RCMOS LDA 1,X GET LSB
ANDA #$0F LEAVE ONLY LS
PSHS A SAVE IT
LDA ,X++ GET MSB + AUTO INC
ASLA
ASLA
ASLA
ASLA SHIFT LS TO MSB
ADDA ,S+ GET LSB + FIX STACK
RTS BYE
*
* READ CMOS INTO A
*
RCMOSA PSHS B SAVE A WHILE
LDB MAPCR GET CURRENT
PSHS B SAVE IT
CLR MAPCR NOW SET TO BLOCK 0
CLR MAPC AND HARDWARE
BSR RCMOS GO READ IT IN A
RCMOSX PULS B GET OLD BLOCK #
STB MAPCR SAVE IT AGAIN
STB MAPC AND IN HARDWARE
PULS B,PC CLEAN + GO
*
* READ CMOS INTO D POINTED TO BY X: A=X,X+1; B=X+2,X+3
*
RCMOSD BSR RCMOSA GET THE FIRST BYTE+FALL THRU FOR 2ND
*
* READ CMOS INTO B POINTED TO BY X
*
RCMOSB PSHS A SAVE A
BSR RCMOSA GET IN A
TFR A,B PUT IT IN B
PULS A,PC DONE
*
* WRITE TO CMOS PRIMITIVE
*
WCMOS PSHS A SAVE WHATS TO BE WRITTEN
STA 1,X SAVE LSB
LSRA SHIFT MS TO LS
LSRA
LSRA
LSRA
STA ,X++ SAVE MSB AND AUTO INC
PULS A,PC DONE
*
* WRITE TO CMOS FROM A AT X
*
WCMOSA PSHS B SAVE STATE
LDB MAPCR GET CURRENT MAP
PSHS B SAVE ON STACK
CLR MAPCR POINT TO BLOCK 0
CLR MAPC AND IN HARDWARE
BSR WCMOS WRITE A TO CMOS
PULS B GET BLOCK SAVED
STB MAPCR SAVE IT
STB MAPC AND IN HARDWARE
PULS B,PC CLEAN UP + GO
*
* WRITE CMOS FROM D TO X: A=X,X+1; B=X+2,X+3
*
WCMOSD BSR WCMOSA DO IT AND FALL THRU FOR 2ND
*
* WRITE CMOS FROM B TO X
*
WCMOSB PSHS A SAVE A
TFR B,A MOVE B TO A
BSR WCMOSA FAKE IT
PULS A,PC DONE
*
* LJSR HERE
*
LJSR LEAS -3,S MAKE ROOM
PSHS A,U SAVE TEMPS
LDA MAPCR GET BLOCK
STA 5,S PUT WITH RETURN ADDR
LDU 6,S GET "RETURN ADDR"
LDA 2,U GET NEW BLOCK
LDU ,U
STU 3,S
STA MAPCR MAKE NEW BLOCK
STA MAPC AND IN HARDWARE
PULS A,U RESTORE
JSR [0,S] DO IT INDIRECT
PSHS A,U SAVE AGAIN
LDA 5,S GET OLD BLOCK BACK
STA MAPCR HOW BORING
STA MAPC
LDU 6,S GET "RETURN ADDR"
LEAU 3,U MAKE REAL
STU 6,S PUT BACK ON STACK
PULS A,U RESTORE
LEAS 3,S TAKE AWAY BYTEE
RTS AND GET THE PHUCK OUT OF HERE.
*
* ROM ADDRESS MAP - ONE BYTE EVERY 2K
* FIRST 2 BYTES FOR ROM1,
* NEXT 2 BYTES FOR ROM2, ETC.
*
* BITS 0-3 BLOCK NUMBER (USE $F FOR MAIN MEMORY)
* BITS 6-4 ADDRESS 0 FOR $C000
* 1 FOR $C800
* 2 FOR $D000
* 3 FOR $D800
* 4 FOR $E000
* 5 FOR $E800
* 6 FOR $F000
* 7 FOR $F800
* 00 FOR NO ROM
*
ROMMAP FCB $00,$00 ROM 1
FCB $00,$00 ROM 2
FCB $00,$00 ROM 3
FCB $00,$00 ROM 4
FCB $00,$00 ROM 5
FCB $00,$00 ROM 6
FCB $00,$00 ROM 7
FCB $00,$00 ROM 8
FCB $00,$00 ROM 9
FCB $00,$00 ROM 10
FCB $00,$00 ROM 11
FCB $00,$00 ROM 12
*
* I/O EQUATES HERE
*
VORAOK EQU DIAORG RORAOK
VOOKRB EQU DIAORG+3 ROOKRB
VOMBAD EQU DIAORG+6 ROMBAD
VPWRUP EQU DIAORG+9 PWRUP
VAUD EQU DIAORG+12 AUD
VAUD1 EQU DIAORG+15 AUD1
LCOINV EQU DIAORG+18 COINL
RCOINV EQU DIAORG+21 COINR
CCOINV EQU DIAORG+24 COINC
RHSTDV EQU DIAORG+27 RHSTD
VCMOSM EQU DIAORG+30 CMOSMV
VUDITG EQU DIAORG+33 AUDITG
VUTOCY EQU DIAORG+36 AUTOCY
VCROM0 EQU DIAORG+39 CROM0
VRAM10 EQU DIAORG+42 CRAM10
VRAM20 EQU DIAORG+45 CRAM20
VOUND0 EQU DIAORG+48 SOUND0
*
* VECTORS TO ROUTINES HERE
*
ORG $FF9D FOR NOW
RMB 2 NULOBV
RMAPV FDB ROMMAP
RCAV JMP RCMOSA
RCBV JMP RCMOSB
RCDV JMP RCMOSD
WCAV JMP WCMOSA
WCBV JMP WCMOSB
WCDV JMP WCMOSD
CWRITV JMP CWRIT
COFFV JMP COFF
BLKCLV JMP BLKCLR
SCRCLV JMP SCRCLR
ROM0V JMP ROM0
ROM9V JMP ROM9
RAM2V JMP RAM2
VAMEOV JMP GAMEOV
RMB 3 "BGIV"
LJSRV JMP LJSR
RMB 3 "SLEPPV"
STBXBV JMP STBXB0
LDBXBV JMP LDBXB0
*
* RESET VECTOR
*
ORG $FFFC
FDB RESET NMI TOO
FDB RESET
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