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PLASMA/src/libsrc/apple/hgrlib.pla

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include "inc/cmdsys.plh"
//
// Hardware addresses
//
const showgraphics = $C050
const showtext = $C051
const showfull = $C052
const showmix = $C053
const showpage1 = $C054
const showpage2 = $C055
const showlores = $C056
const showhires = $C057
const keyboard = $C000
const keystrobe = $C010
const hgr1 = $2000
const hgr2 = $4000
const page1 = 0
const page2 = 1
//
// Apple III hardware constants.
//
const ENV_REG = $FFDF
//
// Screen addresses
//
word hgrbuff[] = hgr1, hgr2
//word hgrscan[] = $0000,$0400,$0800,$0C00,$1000,$1400,$1800,$1C00
//word = $0080,$0480,$0880,$0C80,$1080,$1480,$1880,$1C80
//word = $0100,$0500,$0900,$0D00,$1100,$1500,$1900,$1D00
//word = $0180,$0580,$0980,$0D80,$1180,$1580,$1980,$1D80
//word = $0200,$0600,$0A00,$0E00,$1200,$1600,$1A00,$1E00
//word = $0280,$0680,$0A80,$0E80,$1280,$1680,$1A80,$1E80
//word = $0300,$0700,$0B00,$0F00,$1300,$1700,$1B00,$1F00
//word = $0380,$0780,$0B80,$0F80,$1380,$1780,$1B80,$1F80
//word = $0028,$0428,$0828,$0C28,$1028,$1428,$1828,$1C28
//word = $00A8,$04A8,$08A8,$0CA8,$10A8,$14A8,$18A8,$1CA8
//word = $0128,$0528,$0928,$0D28,$1128,$1528,$1928,$1D28
//word = $01A8,$05A8,$09A8,$0DA8,$11A8,$15A8,$19A8,$1DA8
//word = $0228,$0628,$0A28,$0E28,$1228,$1628,$1A28,$1E28
//word = $02A8,$06A8,$0AA8,$0EA8,$12A8,$16A8,$1AA8,$1EA8
//word = $0328,$0728,$0B28,$0F28,$1328,$1728,$1B28,$1F28
//word = $03A8,$07A8,$0BA8,$0FA8,$13A8,$17A8,$1BA8,$1FA8
//word = $0050,$0450,$0850,$0C50,$1050,$1450,$1850,$1C50
//word = $00D0,$04D0,$08D0,$0CD0,$10D0,$14D0,$18D0,$1CD0
//word = $0150,$0550,$0950,$0D50,$1150,$1550,$1950,$1D50
//word = $01D0,$05D0,$09D0,$0DD0,$11D0,$15D0,$19D0,$1DD0
//word = $0250,$0650,$0A50,$0E50,$1250,$1650,$1A50,$1E50
//word = $02D0,$06D0,$0AD0,$0ED0,$12D0,$16D0,$1AD0,$1ED0
//word = $0350,$0750,$0B50,$0F50,$1350,$1750,$1B50,$1F50
//word = $03D0,$07D0,$0BD0,$0FD0,$13D0,$17D0,$1BD0,$1FD0
//word hmask = $8081,$8082,$8084,$8088,$8090,$80A0,$80C0
//word = $8180,$8280,$8480,$8880,$9080,$A080,$C080
byte hgrscanl[]= $00,$00,$00,$00,$00,$00,$00,$00
byte = $80,$80,$80,$80,$80,$80,$80,$80
byte = $00,$00,$00,$00,$00,$00,$00,$00
byte = $80,$80,$80,$80,$80,$80,$80,$80
byte = $00,$00,$00,$00,$00,$00,$00,$00
byte = $80,$80,$80,$80,$80,$80,$80,$80
byte = $00,$00,$00,$00,$00,$00,$00,$00
byte = $80,$80,$80,$80,$80,$80,$80,$80
byte = $28,$28,$28,$28,$28,$28,$28,$28
byte = $A8,$A8,$A8,$A8,$A8,$A8,$A8,$A8
byte = $28,$28,$28,$28,$28,$28,$28,$28
byte = $A8,$A8,$A8,$A8,$A8,$A8,$A8,$A8
byte = $28,$28,$28,$28,$28,$28,$28,$28
byte = $A8,$A8,$A8,$A8,$A8,$A8,$A8,$A8
byte = $28,$28,$28,$28,$28,$28,$28,$28
byte = $A8,$A8,$A8,$A8,$A8,$A8,$A8,$A8
byte = $50,$50,$50,$50,$50,$50,$50,$50
byte = $D0,$D0,$D0,$D0,$D0,$D0,$D0,$D0
byte = $50,$50,$50,$50,$50,$50,$50,$50
byte = $D0,$D0,$D0,$D0,$D0,$D0,$D0,$D0
byte = $50,$50,$50,$50,$50,$50,$50,$50
byte = $D0,$D0,$D0,$D0,$D0,$D0,$D0,$D0
byte = $50,$50,$50,$50,$50,$50,$50,$50
byte = $D0,$D0,$D0,$D0,$D0,$D0,$D0,$D0
byte hgrscanh[]= $00,$04,$08,$0C,$10,$14,$18,$1C
byte = $00,$04,$08,$0C,$10,$14,$18,$1C
byte = $01,$05,$09,$0D,$11,$15,$19,$1D
byte = $01,$05,$09,$0D,$11,$15,$19,$1D
byte = $02,$06,$0A,$0E,$12,$16,$1A,$1E
byte = $02,$06,$0A,$0E,$12,$16,$1A,$1E
byte = $03,$07,$0B,$0F,$13,$17,$1B,$1F
byte = $03,$07,$0B,$0F,$13,$17,$1B,$1F
byte = $00,$04,$08,$0C,$10,$14,$18,$1C
byte = $00,$04,$08,$0C,$10,$14,$18,$1C
byte = $01,$05,$09,$0D,$11,$15,$19,$1D
byte = $01,$05,$09,$0D,$11,$15,$19,$1D
byte = $02,$06,$0A,$0E,$12,$16,$1A,$1E
byte = $02,$06,$0A,$0E,$12,$16,$1A,$1E
byte = $03,$07,$0B,$0F,$13,$17,$1B,$1F
byte = $03,$07,$0B,$0F,$13,$17,$1B,$1F
byte = $00,$04,$08,$0C,$10,$14,$18,$1C
byte = $00,$04,$08,$0C,$10,$14,$18,$1C
byte = $01,$05,$09,$0D,$11,$15,$19,$1D
byte = $01,$05,$09,$0D,$11,$15,$19,$1D
byte = $02,$06,$0A,$0E,$12,$16,$1A,$1E
byte = $02,$06,$0A,$0E,$12,$16,$1A,$1E
byte = $03,$07,$0B,$0F,$13,$17,$1B,$1F
byte = $03,$07,$0B,$0F,$13,$17,$1B,$1F
byte hbmask = $81,$82,$84,$88,$90,$A0,$C0
byte hlmask = $FF,$FE,$FC,$F8,$F0,$E0,$C0
byte hrmask = $81,$83,$87,$8F,$9F,$BF,$FF
word hcolor[] = $0000,$552A,$2A55,$7F7F,$8080,$D5AA,$AAD5,$FFFF
word curhclr
byte drawpage = 1
word drawbuff = hgr2
export asm divmod7(x)#2
!SOURCE "vmsrc/plvmzp.inc"
LDA ESTKL+0,X ; X COORDL
LDY ESTKH+0,X ; X COORDH
BPL +
TYA ; DEAL WITH NEG X COORD
EOR #$FF
TAY
LDA ESTKL+0,X
EOR #$FF
+ CPY #$01
BEQ ++ ; MUST BE >= 140
BCC +
LDY #40 ; > 512 SO CLIP AT MAX
LDA #00
BEQ +++
+ CMP #140
BCC +
++ SEC
SBC #140
LDY #20
+ CMP #70
BCC +
SBC #70
STA ESTKL+0,X
TYA
ADC #9
TAY
LDA ESTKL+0,X
+ CMP #35
BCC +
SBC #35
STA ESTKL+0,X
TYA
ADC #4
TAY
LDA ESTKL+0,X
+
- CMP #7
BCC +++
SBC #7
INY
BNE -
+++ DEX
ASL ESTKH+1,X ; CHECK SIGN OF XCOORD
BCS +
STA ESTKL+0,X ; REMAINDERL
STY ESTKL+1,X ; QUOTIENTL
LDY #$00
STY ESTKH+0,X
STY ESTKH+1,X
RTS
+ EOR #$07
SBC #$01
STA ESTKL+0,X ; REMAINDERL
TYA
EOR #$FF
STA ESTKL+1,X ; QUOTIENTL
LDY #$00
STY ESTKH+0,X
DEY
STY ESTKH+1,X
RTS
end
asm clipsrc(ofst, y, w, h, srcptr)#0
LDA ESTKL+0,X ; SRC PTR
STA SRCL
LDA ESTKH+0,X
STA SRCH
LDA ESTKL+2,X ; WIDTH (SRC PITCH)
STA TMPH ; WIDTH (DRAW WIDTH)
; CLPTOP
LDY ESTKH+3,X ; Y COORDH
BPL CLPBOTM
INY
; STY ESTKH+3,X ; Y COORDH
BNE CLPPED
LDY ESTKL+3,X ; Y COORDL
- LDA SRCL
CLC
ADC ESTKL+2,X ; PITCH
STA SRCL
BCC +
INC SRCH
+ DEC ESTKL+1,X ; HEIGHT
BEQ CLPPED
INY ; Y COORDL
BNE -
STY ESTKL+3,X ; Y COORDL
BEQ CLPLEFT ; BETTER BE ZERO
CLPBOTM BNE CLPPED
LDA ESTKL+3,X ; YCOORDL
CMP #192
BCS CLPPED
; CLC
ADC ESTKL+1,X ; HEIGHT
SBC #191
BCC CLPLEFT
STA TMPL
LDA ESTKL+1,X ; HEIGHT
SBC TMPL
STA ESTKL+1,X ; HEIGHT
BEQ CLPPED
CLPLEFT LDY ESTKH+4,X ; HORIZ OFFSETH
BPL CLPRGHT
INY
; STY ESTKH+4,X
BNE CLPPED
LDY ESTKL+4,X ; HORIZ OFFSETL
- INC SRCL
BNE +
INC SRCH
+ DEC TMPH ; WIDTH
BEQ CLPPED
INY ; HORIZ OFFSETL
BNE -
STY ESTKL+4,X ; HORIZ OFFSETL
BEQ CLPDONE ; BETTER BE ZERO
CLPRGHT BNE CLPPED
LDA ESTKL+4,X ; HORIZ OFFSETL
CMP #40
BCS CLPPED
; CLC
ADC TMPH ; WIDTH
SBC #39
BCC CLPDONE
STA TMPL
LDA TMPH ; WIDTH
SBC TMPL
STA TMPH ; WIDTH
CLPDONE LDA TMPH
STA ESTKH+2,X ; WIDTH (DRAW WIDTH)
; LDA SRCL
; STA ESTKL+0,X ; SRC PTR
; LDA SRCH
; STA ESTKH+0,X
RTS
CLPPED INX
INX
INX
INX
INX
PLA
PLA
RTS
end
//export def hgrColor(c)#0
// curhclr = hcolor[c & $07]
//end
export asm hgrColor(c)#0
LDA ESTKL+0,X ; COLOR
AND #$07
ASL
TAY
LDA $1000,Y ; HCOLORL
STA $2000 ; CURHCLRL
LDA $1001,Y ; HCOLORH
STA $2001 ; CRHCLRH
INX
RTS
end
//export def hgrCopyDst(ofst, y, w, h, dstptr)#0
// word j, srcptr
//
// ofst = ofst + drawbuff
// for j = y to y + h - 1
// srcptr = hgrscan[j] + ofst
// memcpy(dstptr, srcptr, w)
// dstptr = dstptr + w
// next
//end
export asm hgrCopyDst(ofst, y, w, h, dstptr)#0
JSR $C000 ; CLIPSRC
; LDA ESTKL+0,X ; DST PTR
LDA SRCL
STA DSTL
; LDA ESTKH+0,X
LDA SRCH
STA DSTH
-- LDY ESTKL+3,X ; Y COORD
LDA ESTKL+4,X ; HORIZ OFFSET
CLC
end
asm _hgrCopyDst
ADC $8000,Y ; HGRSCANL
STA SRCL
LDA $1000 ; DRAWBUFFH
ADC $9000,Y ; HGRSCANH
STA SRCH
LDY ESTKH+2,X ; WIDTH
DEY
- LDA (SRC),Y
STA (DST),Y
DEY
BPL -
LDA DSTL
CLC
ADC ESTKL+2,X ; PITCH
STA DSTL
BCC +
INC DSTH
+ INC ESTKL+3,X ; Y COORD
DEC ESTKL+1,X ; HEIGHT
BNE --
INX
INX
INX
INX
INX
RTS
end
//export def hgrCopySrc(ofst, y, w, h, srcptr)#0
// word j, dstptr
//
// ofst = ofst + drawbuff
// for j = y to y + h - 1
// dstptr = hgrscan[j] + ofst
// memcpy(dstptr, srcptr, w)
// srcptr = srcptr + w
// next
//end
export asm hgrCopySrc(ofst, y, w, h, srcptr)#0
JSR $C000 ; CLIPSRC
; LDA ESTKL+0,X ; SRC PTR
; STA SRCL
; LDA ESTKH+0,X
; STA SRCH
-- LDY ESTKL+3,X ; Y COORD
LDA ESTKL+4,X ; HORIZ OFFSET
CLC
end
asm _hgrCopySrc
ADC $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ADC $9000,Y ; HGRSCANH
STA DSTH
LDY ESTKH+2,X ; WIDTH
DEY
- LDA (SRC),Y
STA (DST),Y
DEY
BPL -
LDA SRCL
CLC
ADC ESTKL+2,X ; PITCH
STA SRCL
BCC +
INC SRCH
+ INC ESTKL+3,X ; Y COORD
DEC ESTKL+1,X ; HEIGHT
BNE --
INX
INX
INX
INX
INX
RTS
end
//export def hgrAndSrc(ofst, y, w, h, srcptr)#0
// word j, dstptr
// byte i
//
// ofst = ofst + drawbuff
// for j = y to y + h - 1
// dstptr = hgrscan[j] + ofst
// for i = 0 to w - 1
// dstptr->[i] = dstptr->[i] & srcptr->[i]
// next
// srcptr = srcptr + w
// next
//end
export asm hgrAndSrc(ofst, y, w, h, srcptr)#0
JSR $C000 ; CLIPSRC
; LDA ESTKL+0,X ; SRC PTR
; STA SRCL
; LDA ESTKH+0,X
; STA SRCH
-- LDY ESTKL+3,X ; Y COORD
LDA ESTKL+4,X ; HORIZ OFFSET
CLC
end
asm _hgrAndSrc
ADC $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ADC $9000,Y ; HGRSCANH
STA DSTH
LDY ESTKH+2,X ; WIDTH
DEY
- LDA (SRC),Y
AND (DST),Y
STA (DST),Y
DEY
BPL -
LDA SRCL
CLC
ADC ESTKL+2,X ; PITCH
STA SRCL
BCC +
INC SRCH
+ INC ESTKL+3,X ; Y COORD
DEC ESTKL+1,X ; HEIGHT
BNE --
INX
INX
INX
INX
INX
RTS
end
//export def hgrXorSrc(ofst, y, w, h, srcptr)#0
// word j, dstptr
// byte i
//
// ofst = ofst + drawbuff
// for j = y to y + h - 1
// dstptr = hgrscan[j] + ofst
// for i = 0 to w - 1
// dstptr->[i] = dstptr->[i] ^ srcptr->[i]
// next
// srcptr = srcptr + w
// next
//end
export asm hgrXorSrc(ofst, y, w, h, srcptr)#0
JSR $C000 ; CLIPSRC
; LDA ESTKL+0,X ; SRC PTR
; STA SRCL
; LDA ESTKH+0,X
; STA SRCH
-- LDY ESTKL+3,X ; Y COORD
LDA ESTKL+4,X ; HORIZ OFFSET
CLC
end
asm _hgrXorSrc
ADC $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ADC $9000,Y ; HGRSCANH
STA DSTH
LDY ESTKH+2,X ; WIDTH
DEY
- LDA (SRC),Y
EOR (DST),Y
STA (DST),Y
DEY
BPL -
LDA SRCL
CLC
ADC ESTKL+2,X ; PITCH
STA SRCL
BCC +
INC SRCH
+ INC ESTKL+3,X ; Y COORD
DEC ESTKL+1,X ; HEIGHT
BNE --
INX
INX
INX
INX
INX
RTS
end
//export def hgrOrSrc(ofst, y, w, h, srcptr)#0
// word j, dstptr
// byte i
//
// ofst = ofst + drawbuff
// for j = y to y + h - 1
// dstptr = hgrscan[j] + ofst
// for i = 0 to w - 1
// dstptr->[i] = dstptr->[i] ^ srcptr->[i]
// next
// srcptr = srcptr + w
// next
//end
export asm hgrOrSrc(ofst, y, w, h, srcptr)#0
JSR $C000 ; CLIPSRC
; LDA ESTKL+0,X ; SRC PTR
; STA SRCL
; LDA ESTKH+0,X
; STA SRCH
-- LDY ESTKL+3,X ; Y COORD
LDA ESTKL+4,X ; HORIZ OFFSET
CLC
end
asm _hgrOrSrc
ADC $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ADC $9000,Y ; HGRSCANH
STA DSTH
LDY ESTKH+2,X ; WIDTH
DEY
- LDA (SRC),Y
ORA (DST),Y
STA (DST),Y
DEY
BPL -
LDA SRCL
CLC
ADC ESTKL+2,X ; PITCH
STA SRCL
BCC +
INC SRCH
+ INC ESTKL+3,X ; Y COORD
DEC ESTKL+1,X ; HEIGHT
BNE --
INX
INX
INX
INX
INX
RTS
end
//export def hgrPlot(x, y)#0
// word pixptr
// byte ofst, pixofst, pmask
//
// ofst, pixofst = divmod7(x)
// pixptr = hgrscan[y] + drawbuff + ofst
// pmask = hbmask[pixofst]
// ^pixptr = (^pixptr & ~pmask) | (curhclr.[ofst & 1] & pmask)
//end
export asm hgrPlot(x, y)#0
LDY ESTKL+0,X ; Y COORD
CPY #192
BCS +
end
asm _hgrPlotA
LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
INX
end
asm _hgrPlotB
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; PIXEL OFFSET
end
asm _hgrPlotC
LDA $1000,Y ; HBMASK
STA TMPL
LDA ESTKL+1,X ; HORIZ OFFSET
CMP #40
BCS +
AND #$01
TAY
end
asm _hgrPlotD
LDA $2000,Y ; CURHCLR
LDY ESTKL+1,X ; HORIZ OFFSET
EOR (DST),Y
AND TMPL
EOR (DST),Y
STA (DST),Y
+ INX
INX
RTS
end
//export def hgrXorPlot(x, y)#0
// word pixptr
// byte ofst, pixofst, pmask
//
// ofst, pixofst = divmod7(x)
// pixptr = hgrscan[y] + drawbuff + ofst
// pmask = hbmask[pixofst]
// ^pixptr = ^pixptr ^ (curhclr.[ofst & 1] & pmask)
//end
export asm hgrXorPlot(x, y)#0
LDY ESTKL+0,X ; Y COORD
CPY #192
BCS +
end
asm _hgrXorPlotA
LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
INX
end
asm _hgrXorPlotB
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; PIXEL OFFSET
end
asm _hgrXorPlotC
LDA $1000,Y ; HBMASK
STA TMPL
LDA ESTKL+1,X ; HORIZ OFFSET
CMP #40
BCS +
AND #$01
TAY
end
asm _hgrXorPlotD
LDA $2000,Y ; CURHCLR
LDY ESTKL+1,X ; HORIZ OFFSET
AND TMPL
EOR (DST),Y
STA (DST),Y
+ INX
INX
RTS
end
//export def hgrOrPlot(x, y)#0
// word pixptr
// byte ofst, pixofst, pmask
//
// ofst, pixofst = divmod7(x)
// pixptr = hgrscan[y] + drawbuff + ofst
// pmask = hbmask[pixofst]
// ^pixptr = ^pixptr | (curhclr.[ofst & 1] & pmask)
//end
export asm hgrOrPlot(x, y)#0
LDY ESTKL+0,X ; Y COORD
CPY #192
BCS +
end
asm _hgrOrPlotA
LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
INX
end
asm _hgrOrPlotB
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; PIXEL OFFSET
end
asm _hgrOrPlotC
LDA $1000,Y ; HBMASK
STA TMPL
LDA ESTKL+1,X ; HORIZ OFFSET
CMP #40
BCS +
AND #$01
TAY
end
asm _hgrOrPlotD
LDA $2000,Y ; CURHCLR
LDY ESTKL+1,X ; HORIZ OFFSET
AND TMPL
ORA (DST),Y
STA (DST),Y
+ INX
INX
RTS
end
//export def hgrHLin(x1, x2, y)#0
// word pixptr, x
// byte lofst, lpixofst, lpmask
// byte rofst, rpixofst, rpmask
//
// if x1 == x2
// hgrPlot(x1, y)
// else
// lofst, lpixofst = divmod7(x1)
// pixptr = hgrscan[y] + drawbuff + lofst
// rofst, rpixofst = divmod7(x2)
// lpmask = hlmask[lpixofst]
// rpmask = hrmask[rpixofst]
// if lofst == rofst
// lpmask = lpmask & rpmask
// ^pixptr = (^pixptr & ~lpmask) | (curhclr.[pixptr.0 & 1] & lpmask)
// else
// ^pixptr = (^pixptr & ~lpmask) | (curhclr.[pixptr.0 & 1] & lpmask)
// pixptr++
// for x = lofst + 1 to rofst - 1
// ^pixptr = curhclr.[pixptr.0 & 1]
// pixptr++
// next
// ^pixptr = (^pixptr & ~rpmask) | (curhclr.[pixptr.0 & 1] & rpmask)
// fin
// fin
//end
export asm hgrHLin(x1, x2, y)#0
LDA ESTKL+1
CMP ESTKL+2
BNE +
LDA ESTKH+1
CMP ESTKH+2
BNE +
end
asm _hgrHLinA
JSR $F000
INX
RTS
+ LDY ESTKL+0,X ; Y COORD
end
asm _hgrHLinB
LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
LDA ESTKL+1,X
STA ESTKL+0,X
LDA ESTKH+1,X
STA ESTKH+0,X
end
asm _hgrHLinC
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; RIGHT PIXEL OFFSET
end
asm _hgrHLinD
LDA $1000,Y ; HRMASK
STA TMPH
LDY ESTKL+1,X ; RIGHT HORIZ OFFSET
STY IPY ; STEAL THIS ZP FOR A MOMENT
INX
INX
INX
end
asm _hgrHLinE
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; LEFT PIXEL OFFSET
end
asm _hgrHLinF
LDA $1000,Y ; HLMASK
STA TMPL
LDY ESTKL+1,X ; LEFT HORIZ OFFSET
TYA
LSR
BCS +
end
asm _hgrHLinG
LDA $2001 ; CURHCLRH
STA SRCH
LDA $2000 ; CURHCLRL
STA SRCL
BCC ++
+ LDA $2000 ; CURHCLRL
STA SRCH
LDA $2001 ; CURHCLRH
STA SRCL
++ CPY IPY ; RIGHT HORIZ OFFSET
BNE +
EOR (DST),Y
AND TMPL
AND TMPH
EOR (DST),Y
STA (DST),Y
INX
INX
RTS
+ EOR (DST),Y
AND TMPL
EOR (DST),Y
- STA (DST),Y
LDA SRCH
INY
CPY IPY ; RIGHT HORIZ OFFSET
BCS +
STA (DST),Y
LDA SRCL
INY
CPY IPY ; RIGHT HORIZ OFFSET
BCC -
+ EOR (DST),Y
AND TMPH
EOR (DST),Y
STA (DST),Y
INX
INX
RTS
end
//export def hgrXorHLin(x1, x2, y)#0
// word pixptr, x
// byte lofst, lpixofst, lpmask
// byte rofst, rpixofst, rpmask
//
// if x1 == x2
// hgrPlot(x1, y)
// else
// lofst, lpixofst = divmod7(x1)
// pixptr = hgrscan[y] + drawbuff + lofst
// rofst, rpixofst = divmod7(x2)
// lpmask = hlmask[lpixofst]
// rpmask = hrmask[rpixofst]
// if lofst == rofst
// lpmask = lpmask & rpmask
// ^pixptr = ^pixptr ^ (curhclr.[pixptr.0 & 1] & lpmask)
// else
// ^pixptr = ^pixptr ^ (curhclr.[pixptr.0 & 1] & lpmask)
// pixptr++
// for x = lofst + 1 to rofst - 1
// ^pixptr = ^pixptr ^ curhclr.[pixptr.0 & 1]
// pixptr++
// next
// ^pixptr = ^pixptr ^ (curhclr.[pixptr.0 & 1] & rpmask)
// fin
// fin
//end
export asm hgrXorHLin(x1, x2, y)#0
LDA ESTKL+1
CMP ESTKL+2
BNE +
LDA ESTKH+1
CMP ESTKH+2
BNE +
end
asm _hgrXHLinA
JSR $F000
INX
RTS
+ LDY ESTKL+0,X ; Y COORD
end
asm _hgrXHLinB
LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
LDA ESTKL+1,X
STA ESTKL+0,X
LDA ESTKH+1,X
STA ESTKH+0,X
end
asm _hgrXHLinC
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; RIGHT PIXEL OFFSET
end
asm _hgrXHLinD
LDA $1000,Y ; HRMASK
STA TMPH
LDY ESTKL+1,X ; RIGHT HORIZ OFFSET
STY IPY ; STEAL THIS ZP FOR A MOMENT
INX
INX
INX
end
asm _hgrXHLinE
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; LEFT PIXEL OFFSET
end
asm _hgrXHLinF
LDA $1000,Y ; HLMASK
STA TMPL
LDY ESTKL+1,X ; LEFT HORIZ OFFSET
TYA
LSR
BCS +
end
asm _hgrXHLinG
LDA $2001 ; CURHCLRH
STA SRCH
LDA $2000 ; CURHCLRH
STA SRCL
BCC ++
+ LDA $2000 ; CURHCLRL
STA SRCH
LDA $2001 ; CURHCLRH
STA SRCL
++ CPY IPY ; RIGHT HORIZ OFFSET
BNE +
AND TMPL
AND TMPH
EOR (DST),Y
STA (DST),Y
INX
INX
RTS
+ AND TMPL
- EOR (DST),Y
STA (DST),Y
LDA SRCH
INY
CPY IPY ; RIGHT HORIZ OFFSET
BCS +
EOR (DST),Y
STA (DST),Y
LDA SRCL
INY
CPY IPY ; RIGHT HORIZ OFFSET
BCC -
+ AND TMPH
EOR (DST),Y
STA (DST),Y
INX
INX
RTS
end
//export def hgrVlin(y1, y2, x)#0
// word pixptr, y, ofst
// byte pixofst, pmask, cmask
//
// if y1 == y2
// hgrPlot(x, y1)
// else
// ofst, pixofst = divmod7(x)
// ofst = ofst + drawbuff
// pmask = hbmask[pixofst]
// cmask = curhclr.[ofst & 1] & pmask
// pmask = ~pmask
// for y = y1 to y2
// pixptr = hgrscan[y] + ofst
// ^pixptr = (^pixptr & pmask) | cmask
// next
// fin
//end
export asm hgrVlin(y1, y2, x)#0
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; PIXEL OFFSET
end
asm _hgrVLinA
LDA $1000,Y ; HBMASK
STA TMPL
EOR #$FF
STA TMPH
LDA ESTKL+1,X ; HORIZ OFFSET
AND #$01
TAY
end
asm _hgrVLinB
LDA $2000,Y ; CURHCLR
AND TMPL
STA TMPL
LDY ESTKL+3,X ; Y1 COORD
end
asm _hgrVLinC
- LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
LDY ESTKL+1,X ; HORIZ OFFSET
LDA (DST),Y
AND TMPH
ORA TMPL
STA (DST),Y
LDY ESTKL+3,X ; Y1 COORD
TYA
INY
STY ESTKL+3,X ; Y1 COORD
CMP ESTKL+2,X ; Y2 COORD
BNE -
INX
INX
INX
INX
RTS
end
//export def hgrXVlin(y1, y2, x)#0
// word pixptr, y, ofst
// byte pixofst, pmask, cmask
//
// if y1 == y2
// hgrXorPlot(x, y1)
// else
// ofst, pixofst = divmod7(x)
// ofst = ofst + drawbuff
// pmask = hbmask[pixofst]
// cmask = curhclr.[ofst & 1] & pmask
// pmask = ~pmask
// for y = y1 to y2
// pixptr = hgrscan[y] + ofst
// ^pixptr = ^pixptr ^ cmask
// next
// fin
//end
export asm hgrXorVlin(y1, y2, x)#0
JSR 1000 ; DIVMOD7
LDY ESTKL+0,X ; PIXEL OFFSET
end
asm _hgrXVLinA
LDA $1000,Y ; HBMASK
STA TMPL
EOR #$FF
STA TMPH
LDA ESTKL+1,X ; HORIZ OFFSET
AND #$01
TAY
end
asm _hgrXVLinB
LDA $2000,Y ; CURHCLR
AND TMPL
STA TMPL
LDY ESTKL+3,X ; Y1 COORD
end
asm _hgrXVLinC
- LDA $8000,Y ; HGRSCANL
STA DSTL
LDA $1000 ; DRAWBUFFH
ORA $9000,Y ; HGRSCANH
STA DSTH
LDY ESTKL+1,X ; HORIZ OFFSET
LDA TMPL
EOR (DST),Y
STA (DST),Y
LDY ESTKL+3,X ; Y1 COORD
TYA
INY
STY ESTKL+3,X ; Y1 COORD
CMP ESTKL+2,X ; Y2 COORD
BNE -
INX
INX
INX
INX
RTS
end
//
// Masked BLT scanline of pixmap
//
asm scanBLT(x, y, w, srcptr)#0
LDA ESTKL+0,X ; SRC PTR
STA SRCL
LDA ESTKH+0,X
STA SRCH
LDA #$00
- PHA
LSR
TAY
LDA (SRC),Y
LSR
LSR
LSR
LSR
PHA
DEX
STA ESTKL+0,X
end
asm _scanBLTA
JSR $C000 ; HCOLOR
DEX
DEX
LDA ESTKL+5,X ; X COORDL
STA ESTKL+1,X
LDA ESTKH+5,X ; X COORDH
STA ESTKH+1,X
LDA ESTKL+4,X ; Y COORDL
STA ESTKL+0,X
LDA ESTKH+4,X ; Y COORDH
STA ESTKH+0,X
PLA
AND #$08
BEQ +
end
asm _scanBLTB
JSR $D000 ; HPLOT
BEQ ++
BNE ++
+ JSR $E000 ; HPLOTOR
++ INC ESTKL+3,X ; X COORDL
BNE +
INC ESTKH+3,X ; X COORDH
+ PLA
CLC
ADC #$01
CMP ESTKL+1,X ; WIDTH
BEQ BLTDONE
PHA
LSR
TAY
LDA (SRC),Y
PHA
DEX
STA ESTKL+0,X
end
asm _scanBLTC
JSR $C000 ; HCOLOR
DEX
DEX
LDA ESTKL+5,X ; X COORDL
STA ESTKL+1,X
LDA ESTKH+5,X ; X COORDH
STA ESTKH+1,X
LDA ESTKL+4,X ; Y COORDL
STA ESTKL+0,X
LDA ESTKH+4,X ; Y COORDH
STA ESTKH+0,X
PLA
AND #$08
BEQ +
end
asm _scanBLTD
JSR $D000 ; HPLOT
BEQ ++
BNE ++
+ JSR $E000 ; HPLOTOR
++ INC ESTKL+3,X ; X COORDL
BNE +
INC ESTKH+3,X ; X COORDH
+ PLA
CLC
ADC #$01
CMP ESTKL+1,X ; WIDTH
BNE -
BLTDONE INX
INX
INX
INX
RTS
end
export def hgrRect(x1, y1, x2, y2)#0
word y
if x1 == x2
hgrVLin(y1, y2, x1)
else
for y = y1 to y2
hgrHLin(x1, x2, y)
next
fin
end
export def hgrXorRect(x1, y1, x2, y2)#0
word y
if x1 == x2
hgrXorVLin(y1, y2, x1)
else
for y = y1 to y2
hgrXorHLin(x1, x2, y)
next
fin
end
export def hgrBLT(x, y, w, h, srcptr)#0
word i, j
word saveclr
byte c
saveclr = curhclr
for j = y to y + h - 1
scanBLT(x, j, w, srcptr)
// for i = 0 to w - 1
// c = srcptr->[i >> 1]
// if i & 1
// hgrColor(c)
// if c & $08
// hgrOrPlot(x + i, j)
// else
// hgrPlot(x + i, j)
// fin
// else
// hgrColor(c >> 4)
// if c & $80
// hgrXorPlot(x + i, j)
// else
// hgrPlot(x + i, j)
// fin
// fin
// next
srcptr = srcptr + (w + 1) / 2
next
curhclr = saveclr
end
export def hgrMode(mode)#1
when mode
is page1
//
// Set HGR1 mode
//
memset(hgr1, 0, $2000) // Clear HGR1
^showpage1
^showfull
^showhires
^showgraphics
drawpage = page2
drawbuff = hgrbuff[page2]
break
is page2
//
// Set HGR2 mode
//
memset(hgr2, 0, $2000) // Clear HGR2
^showpage2
^showfull
^showhires
^showgraphics
drawpage = page1
drawbuff = hgrbuff[page1]
break
otherwise
//
// Show text mode
//
^showpage1
^showtext
wend
return mode
end
export def hgrClear#0
memset(drawbuff, curhclr, drawbuff) // Clear current HGR page
end
//
// Set display page, return other page
//
export def hgrShow(page)#1
page = page & 1
^(showpage1 + page)
return page ^ 1
end
export def hgrSwap#1
^(showpage1 + drawpage)
drawpage = drawpage ^ 1
drawbuff = hgrbuff[drawpage]
return drawpage
end
export def hgrDrawBuf(page)#1
drawpage = page & 1
drawbuff = hgrbuff[drawpage]
return drawpage
end
//
// Machine compatibility check
//
if MACHID & MACHID_MODEL == MACHID_III or MACHID & MACHID_MODEL == MACHID_I
puts("Apple II compatible only.\n")
return -1
fin
//
// Assembly fixups
//
hgrCopyDst:1 = @clipsrc
_hgrCopyDst:1 = @hgrscanl
_hgrCopyDst:6 = @drawbuff.1
_hgrCopyDst:9 = @hgrscanh
hgrCopySrc:1 = @clipsrc
_hgrCopySrc:1 = @hgrscanl
_hgrCopySrc:6 = @drawbuff.1
_hgrCopySrc:9 = @hgrscanh
hgrAndSrc:1 = @clipsrc
_hgrAndSrc:1 = @hgrscanl
_hgrAndSrc:6 = @drawbuff.1
_hgrAndSrc:9 = @hgrscanh
hgrXorSrc:1 = @clipsrc
_hgrXorSrc:1 = @hgrscanl
_hgrXorSrc:6 = @drawbuff.1
_hgrXorSrc:9 = @hgrscanh
hgrOrSrc:1 = @clipsrc
_hgrOrSrc:1 = @hgrscanl
_hgrOrSrc:6 = @drawbuff.1
_hgrOrSrc:9 = @hgrscanh
_hgrPlotA:1 = @hgrscanl
_hgrPlotA:6 = @drawbuff.1
_hgrPlotA:9 = @hgrscanh
_hgrPlotB:1 = @divmod7
_hgrPlotC:1 = @hbmask
_hgrPlotD:1 = @curhclr
_hgrXorPlotA:1 = @hgrscanl
_hgrXorPlotA:6 = @drawbuff.1
_hgrXorPlotA:9 = @hgrscanh
_hgrXorPlotB:1 = @divmod7
_hgrXorPlotC:1 = @hbmask
_hgrXorPlotD:1 = @curhclr
_hgrOrPlotA:1 = @hgrscanl
_hgrOrPlotA:6 = @drawbuff.1
_hgrOrPlotA:9 = @hgrscanh
_hgrOrPlotB:1 = @divmod7
_hgrOrPlotC:1 = @hbmask
_hgrOrPlotD:1 = @curhclr
_hgrHLinA:1 = @hgrPlot
_hgrHLinB:1 = @hgrscanl
_hgrHLinB:6 = @drawbuff.1
_hgrHLinB:9 = @hgrscanh
_hgrHLinC:1 = @divmod7
_hgrHLinD:1 = @hrmask
_hgrHLinE:1 = @divmod7
_hgrHLinF:1 = @hlmask
_hgrHLinG:1 = @curhclr.1
_hgrHLinG:6 = @curhclr
_hgrHLinG:13 = @curhclr
_hgrHLinG:18 = @curhclr.1
_hgrXHLinA:1 = @hgrXorPlot
_hgrXHLinB:1 = @hgrscanl
_hgrXHLinB:6 = @drawbuff.1
_hgrXHLinB:9 = @hgrscanh
_hgrXHLinC:1 = @divmod7
_hgrXHLinD:1 = @hrmask
_hgrXHLinE:1 = @divmod7
_hgrXHLinF:1 = @hlmask
_hgrXHLinG:1 = @curhclr.1
_hgrXHLinG:6 = @curhclr
_hgrXHLinG:13 = @curhclr
_hgrXHLinG:18 = @curhclr.1
hgrVLin:1 = @divmod7
_hgrVLinA:1 = @hbmask
_hgrVLinB:1 = @curhclr
_hgrVLinC:1 = @hgrscanl
_hgrVLinC:6 = @drawbuff.1
_hgrVLinC:9 = @hgrscanh
hgrXorVLin:1 = @divmod7
_hgrXVLinA:1 = @hbmask
_hgrXVLinB:1 = @curhclr
_hgrXVLinC:1 = @hgrscanl
_hgrXVLinC:6 = @drawbuff.1
_hgrXVLinC:9 = @hgrscanh
hgrColor:7 = @hcolor
hgrColor:10 = @curhclr
hgrColor:13 = @hcolor.1
hgrColor:16 = @curhclr.1
_scanBLTA:1 = @hgrColor
_scanBLTB:1 = @hgrPlot
_scanBLTB:8 = @hgrOrPlot
_scanBLTC:1 = @hgrColor
_scanBLTD:1 = @hgrPlot
_scanBLTD:8 = @hgrOrPlot
//
// Keep module in memory
//
return modkeep
done