mirror of
https://github.com/A2osX/A2osX.git
synced 2024-12-02 05:49:24 +00:00
163 lines
3.1 KiB
Plaintext
163 lines
3.1 KiB
Plaintext
NEW
|
||
PREFIX
|
||
AUTO 4,1
|
||
.LIST OFF
|
||
*--------------------------------------
|
||
* SETPIXEL
|
||
* 1 : OP (XOR,SET,ORA)
|
||
* 2 : Mode
|
||
* 3 : Color
|
||
* 4 : SrcX1
|
||
* 6 : SrcY1
|
||
*--------------------------------------
|
||
SETPIXEL lda CB.Cache+S.CB.M
|
||
bit #S.CB.M.C16
|
||
bne SETPIXEL.C16
|
||
|
||
SETPIXEL.MONO >LDYA CB.Cache+S.CB.X1
|
||
|
||
jsr DIVMOD7YA
|
||
tay
|
||
lda COL.OFS,y
|
||
phy
|
||
|
||
ldy CB.Cache+S.CB.Y1
|
||
clc
|
||
adc BASEL,y
|
||
sta ZPBasePtr
|
||
lda BASEH,y
|
||
sta ZPBasePtr+1
|
||
|
||
ply
|
||
lda COL.BANK,y
|
||
tay
|
||
sta $C000,y Select proper BANK
|
||
|
||
lda CB.Cache+S.CB.OP
|
||
* cmp #S.CB.OP.XOR
|
||
beq SETPIXEL.MONO.XOR
|
||
|
||
lda CB.Cache+S.CB.COLOR
|
||
bne SETPIXEL.MONO.WHITE
|
||
|
||
SETPIXEL.MONO.BLACK
|
||
lda (ZPBasePtr)
|
||
and Mono.NMasks,x
|
||
sta (ZPBasePtr)
|
||
|
||
rts
|
||
|
||
SETPIXEL.MONO.WHITE
|
||
lda (ZPBasePtr)
|
||
and #$7f Clear Color Bit
|
||
ora Mono.Masks,x
|
||
sta (ZPBasePtr)
|
||
|
||
rts
|
||
|
||
SETPIXEL.MONO.XOR
|
||
lda (ZPBasePtr)
|
||
and #$7f Clear Color Bit
|
||
eor Mono.Masks,x
|
||
sta (ZPBasePtr)
|
||
|
||
rts
|
||
|
||
SETPIXEL.C16 lda CB.Cache+S.CB.X1
|
||
lsr CB.Cache+S.CB.X1+1 divide by 4
|
||
ror
|
||
lsr CB.Cache+S.CB.X1+1
|
||
ror
|
||
tay Y=X/4 (range 0->139)
|
||
lda DIV7.0,y A=X/4/7 (range 0->19)
|
||
|
||
asl times 2 (range 0->38)
|
||
|
||
ldx CB.Cache+S.CB.Y1
|
||
* clc
|
||
adc BASEL,x setup line Base Ptr (cc by asl)
|
||
sta ZPBasePtr ZPBasePtr now point to first of...
|
||
lda BASEH,x
|
||
sta ZPBasePtr+1 ...the 4 columns
|
||
|
||
lda MOD7.0,y get MOD
|
||
|
||
asl times 4 to compute index in MASK tables
|
||
asl
|
||
tax set in X for Masks,NMasks
|
||
|
||
lda CB.Cache+S.CB.COLOR
|
||
|
||
asl times 4 to compute index in PIXELS table
|
||
asl
|
||
tay
|
||
|
||
lda Color.Masks,x bits in 1st byte to light?
|
||
beq .10
|
||
and Color.Pixels,y apply color
|
||
sta ZPTmpByte
|
||
|
||
sta SETPAGE2
|
||
|
||
lda (ZPBasePtr)
|
||
and Color.NMasks,x reset existing pixel,
|
||
ora ZPTmpByte
|
||
sta (ZPBasePtr)
|
||
|
||
.10 inx
|
||
iny
|
||
|
||
lda Color.Masks,x
|
||
beq .11
|
||
and Color.Pixels,y apply color
|
||
sta ZPTmpByte
|
||
|
||
sta CLRPAGE2
|
||
|
||
lda (ZPBasePtr)
|
||
and Color.NMasks,x reset existing pixel,
|
||
ora ZPTmpByte
|
||
sta (ZPBasePtr)
|
||
|
||
.11 inc ZPBasePtr
|
||
inx
|
||
iny
|
||
|
||
lda Color.Masks,x
|
||
beq .12
|
||
and Color.Pixels,y apply color
|
||
sta ZPTmpByte
|
||
|
||
sta SETPAGE2
|
||
|
||
lda (ZPBasePtr)
|
||
and Color.NMasks,x reset existing pixel,
|
||
ora ZPTmpByte
|
||
sta (ZPBasePtr)
|
||
|
||
.12 inx
|
||
iny
|
||
|
||
lda Color.Masks,x
|
||
beq .13
|
||
and Color.Pixels,y apply color
|
||
sta ZPTmpByte
|
||
|
||
sta CLRPAGE2
|
||
|
||
lda (ZPBasePtr)
|
||
and Color.NMasks,x reset existing pixel,
|
||
ora ZPTmpByte
|
||
sta (ZPBasePtr)
|
||
|
||
.13 rts
|
||
*--------------------------------------
|
||
* GETPIXEL
|
||
*--------------------------------------
|
||
GETPIXEL rts
|
||
*--------------------------------------
|
||
MAN
|
||
SAVE USR/SRC/DRV/DHGR.DRV.S.PIX
|
||
LOAD USR/SRC/DRV/DHGR.DRV.S
|
||
ASM
|