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write-combine without intermediate var
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72f0558974
commit
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@ -206,9 +206,8 @@ export asm dgrBLT(buff, x, y, width, height, src)
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CLC
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ADC ESTKL+2,X ; WIDTH
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STA SRCL
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LDA SRCH
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ADC #$00
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STA SRCH
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BCC +++
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INC SRCH
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BNE +++
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+ AND #$FE
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TAY
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@ -268,12 +267,10 @@ asm _dgrSetPix
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end
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asm _dgrSetEvnEvn
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; EVEN PIXEL
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LDA $2000,X
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AND #$0F
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STA TMP
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JSR $0100 ; LDA AUX (DST),Y
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EOR $2000,X
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AND #$F0
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ORA TMP
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EOR $2000,X
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STA $C005 ; WRITE AUX MEM
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STA (GBASE),Y
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STA $C004 ; WRITE MAIN MEM
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@ -281,12 +278,10 @@ asm _dgrSetEvnEvn
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end
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asm _dgrSetEvnOdd
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; ODD PIXEL
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+ LDA $1000,X
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AND #$0F
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STA TMP
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LDA (GBASE),Y
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+ LDA (GBASE),Y
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EOR $1000,X
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AND #$F0
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ORA TMP
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EOR $1000,X
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STA (GBASE),Y
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RTS
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; ODD ROW
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@ -296,12 +291,10 @@ asm _dgrSetEvnOdd
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end
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asm _dgrSetOddEvn
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; EVEN PIXEL
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LDA $2000,X
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AND #$F0
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STA TMP
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JSR $0100 ; LDA AUX (DST),Y
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EOR $2000,X
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AND #$0F
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ORA TMP
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EOR $2000,X
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STA $C005 ; WRITE AUX MEM
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STA (GBASE),Y
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STA $C004 ; WRITE MAIN MEM
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@ -309,12 +302,10 @@ asm _dgrSetOddEvn
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end
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asm _dgrSetOddOdd
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; ODD PIXEL
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+++ LDA $1000,X
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AND #$F0
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STA TMP
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LDA (GBASE),Y
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+++ LDA (GBASE),Y
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EOR $1000,X
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AND #$0F
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ORA TMP
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EOR $1000,X
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STA (GBASE),Y
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RTS
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end
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@ -358,9 +349,8 @@ export asm dgrTile(buff, x, y, src)
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LDA SRCL ; SKIP TO NEXT ROW
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ADC #$07 ; CARRY = 1
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STA SRCL
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LDA SRCH
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ADC #$00
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STA SRCH
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BCC +++
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INC SRCH
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BNE +++
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+ AND #$FE
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TAY
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