35 lines
826 B
NASM
35 lines
826 B
NASM
; Colors that each screen pixel can be set to
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define COLOR_Black $00
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define COLOR_White $01
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define COLOR_Red $02
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define COLOR_Cyan $03
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define COLOR_Purple $04
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define COLOR_Green $05
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define COLOR_Blue $06
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define COLOR_Yellow $07
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define COLOR_Orange $08
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define COLOR_Brown $09
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define COLOR_LightRed $0A
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define COLOR_DarkGrey $0B
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define COLOR_Grey $0C
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define COLOR_LightGreen $0D
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define COLOR_LightBlue $0E
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define COLOR_LightGrey $0F
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; The screen as a collection of pixels
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define SCREEN $200
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; Screen(0) = White
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LDA #COLOR_White ; a = White
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STA SCREEN+0 ; Screen(0) = a
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; Screen(1) = Green
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LDA #COLOR_Green ; a = Green
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STA SCREEN+1 ; Screen(1) = a
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; Screen(2) = Orange
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LDA #COLOR_Orange ; a = Orange
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STA SCREEN+2 ; Screen(2) = a
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