227 lines
5.0 KiB
Plaintext
227 lines
5.0 KiB
Plaintext
;MFF0DRVR.SC0
|
|
;
|
|
;-------------------
|
|
;MAINLINE CODE
|
|
;-------------------
|
|
AUXSETUP LDA #>ENTRYPTS ;MOVE WHOLE PROGRAM TO AUX
|
|
STA SRCMAINL
|
|
STA TGTAUXL
|
|
LDA #<ENTRYPTS
|
|
STA SRCMAINH
|
|
STA TGTAUXH
|
|
LDA #>EOF
|
|
STA ENDMAINL
|
|
LDA #<EOF
|
|
STA ENDMAINH
|
|
LDA #$01
|
|
STA TOAUX
|
|
JSR DOAUXMV
|
|
RTS
|
|
;
|
|
PLAYMAIN JMP PLAYIT1
|
|
PLAYAUX LDA #>PLAYSTRT ;MOVE PARM AREA TO AUX
|
|
STA SRCMAINL
|
|
STA TGTAUXL
|
|
LDA #<PLAYSTRT
|
|
STA SRCMAINH
|
|
STA TGTAUXH
|
|
LDA #>AUXSETUP ;ALSO MOVE ALL DATA VARIABLES
|
|
STA ENDMAINL
|
|
LDA #<AUXSETUP
|
|
STA ENDMAINH
|
|
LDA #$01
|
|
STA TOAUX
|
|
JSR DOAUXMV
|
|
;
|
|
LDA #>AUXCODE ;TRANSFER TO AUX PROGRAM
|
|
STA XFERADRL
|
|
LDA #<AUXCODE
|
|
STA XFERADRH
|
|
LDA #$01
|
|
STA XFTOAUX
|
|
LDA #$00
|
|
STA USEAUXZP
|
|
JMP DOXFER
|
|
AUXRTN RTS
|
|
; ;TRANSFER BACK TO MAIN MEMORY PROGRAM
|
|
AUXCODE JSR PLAYIT1 ;PLAY THE AUX BUFFER
|
|
LDA #>PLAYSTRT ;MOVE PARM AREA BACK TO MAIN
|
|
STA SRCMAINL
|
|
STA TGTAUXL
|
|
LDA #<PLAYSTRT
|
|
STA SRCMAINH
|
|
STA TGTAUXH
|
|
LDA #>AUXSETUP
|
|
STA ENDMAINL
|
|
LDA #<AUXSETUP
|
|
STA ENDMAINH
|
|
LDA #$00
|
|
STA TOAUX
|
|
JSR DOAUXMV
|
|
;
|
|
LDA #>AUXRTN ;TRANSFER BACK TO MAIN PROGRAM
|
|
STA XFERADRL
|
|
LDA #<AUXRTN
|
|
STA XFERADRH
|
|
LDA #$00
|
|
STA XFTOAUX
|
|
LDA #$00
|
|
STA USEAUXZP
|
|
JMP DOXFER
|
|
;
|
|
DOAUXMV LDA SRCMAINL
|
|
STA $3C
|
|
LDA SRCMAINH
|
|
STA $3D
|
|
LDA ENDMAINL
|
|
STA $3E
|
|
LDA ENDMAINH
|
|
STA $3F
|
|
LDA TGTAUXL
|
|
STA $42
|
|
LDA TGTAUXH
|
|
STA $43
|
|
LDA TOAUX
|
|
BNE AUXMOVE1
|
|
CLC
|
|
JMP AUXMOVE
|
|
AUXMOVE1 SEC
|
|
JMP AUXMOVE
|
|
;
|
|
DOXFER LDA XFERADRL
|
|
STA $3ED
|
|
LDA XFERADRH
|
|
STA $3EE
|
|
LDA XFTOAUX
|
|
BNE DOXFER1
|
|
CLC
|
|
JMP DOXFER2
|
|
DOXFER1 SEC
|
|
DOXFER2 LDA USEAUXZP
|
|
BNE DOXFER3
|
|
CLV
|
|
JMP DOXFER4
|
|
DOXFER3 BIT MONRTS ;SET OVERFLOW
|
|
DOXFER4 JMP AUXXFER
|
|
;=============================
|
|
PLAYIT1 LDA PLAYSTRT ;INITIALIZE PTR TO BEGINNING OF AREA
|
|
STA PLAYPTR
|
|
LDA PLAYSTRT+1
|
|
STA PLAYPTR+1
|
|
LDA KARALOOK ;12/17/95-KARALOOK LOGIC
|
|
BEQ PLAYLOOP
|
|
LDA #$8D
|
|
JSR COUT
|
|
JSR KARASCAN
|
|
PLAYLOOP LDY #$00 ;READ 1 BYTE
|
|
LDA (PLAYPTR),Y
|
|
STA INBYTE
|
|
JSR PRCSBYTE
|
|
LDA ENDOFTRK
|
|
BEQ PLAYLOO1
|
|
RTS
|
|
PLAYLOO1 JSR CHKKBD
|
|
LDA ENDOFTRK
|
|
BEQ INCPTR
|
|
RTS
|
|
INCPTR INC PLAYPTR
|
|
BNE INCPTR2
|
|
INC PLAYPTR+1
|
|
INCPTR2 LDA PLAYPTR
|
|
CMP PLAYSTOP
|
|
BNE PLAYLOOP
|
|
LDA PLAYPTR+1
|
|
CMP PLAYSTOP+1
|
|
BNE PLAYLOOP
|
|
RTS
|
|
;-------
|
|
; CHKKBD - MAY SET ENDOFTRK
|
|
;-------
|
|
CHKKBD LDA $C000
|
|
BPL NOKEY1
|
|
LDA $C010
|
|
AND #$7F
|
|
CMP #$20
|
|
BNE CHKESC
|
|
LDA #$01
|
|
STA ENDOFTRK
|
|
NOKEY1 RTS
|
|
CHKESC CMP #$1B
|
|
BNE CHKFLAT
|
|
WAITKEY LDA #$00
|
|
STA PAUSEFLG
|
|
WAITKEY1 LDA $C000
|
|
BPL WAITKEY1
|
|
LDA $C010
|
|
AND #$7F
|
|
CMP #$1B
|
|
BNE ESCDONE
|
|
INC PAUSEFLG
|
|
ESCDONE RTS
|
|
CHKFLAT CMP #$46 ;'F'-CHANGE UCS<->LCF
|
|
BNE TESTTMPO
|
|
LDA DISPMODE
|
|
EOR #$01
|
|
STA DISPMODE
|
|
RTS
|
|
TESTTMPO CMP #$54 ;'T'-TEMPO CHGS
|
|
BNE CHKDRUM
|
|
LDA DOTMPOCG
|
|
EOR #$01
|
|
STA DOTMPOCG
|
|
RTS
|
|
CHKDRUM CMP #$44 ;'D'-MASK DRUMS
|
|
BNE CHKLEFT
|
|
DEC MASKDRUM
|
|
LDA MASKDRUM
|
|
CMP #$FE
|
|
BNE DRUMDONE
|
|
LDA #$01
|
|
STA MASKDRUM
|
|
DRUMDONE RTS
|
|
CHKLEFT CMP #$08
|
|
BNE CHKRIGHT
|
|
DEC SPEED
|
|
LDA SPEED
|
|
BMI LEFTBAD
|
|
BEQ LEFTBAD
|
|
DEC SPEEDINC
|
|
JSR SPEEDDEC
|
|
JSR METRPOKE
|
|
LDA PRNTSPED
|
|
BEQ LEFTDONE
|
|
LDA #$A0
|
|
JSR COUT
|
|
LDA SPEED
|
|
JSR PRINTHEX
|
|
LDA #$A0
|
|
JSR COUT
|
|
LEFTDONE RTS
|
|
LEFTBAD INC SPEED
|
|
RTS
|
|
CHKRIGHT CMP #$15
|
|
BNE NOKEY
|
|
INC SPEED
|
|
LDA SPEED
|
|
BMI RIGHTBAD
|
|
BEQ RIGHTBAD
|
|
INC SPEEDINC
|
|
JSR SPEEDDEC
|
|
JSR METRPOKE
|
|
LDA PRNTSPED
|
|
BEQ NOKEY
|
|
LDA #$A0
|
|
JSR COUT
|
|
LDA SPEED
|
|
JSR PRINTHEX
|
|
LDA #$A0
|
|
JSR COUT
|
|
NOKEY RTS
|
|
RIGHTBAD DEC SPEED
|
|
RTS
|
|
;
|
|
;=========
|
|
; PRCSBYTE - MAY SET ENDOFTRK
|
|
;=========
|
|
CHN MFF0DRVR.SC1
|