mirror of https://github.com/cc65/cc65.git
69 lines
1.6 KiB
ArmAsm
69 lines
1.6 KiB
ArmAsm
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; Written by Groepaz/Hitmen <groepaz@gmx.net>
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; Cleanup by Ullrich von Bassewitz <uz@cc65.org>
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;
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; unsigned char __fastcall__ textcolor (unsigned char color);
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; unsigned char __fastcall__ bgcolor (unsigned char color);
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; unsigned char __fastcall__ bordercolor (unsigned char color);
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;
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.export _textcolor, _bgcolor, _bordercolor
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.import return0, ppubuf_put
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.include "nes.inc"
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_textcolor = return0
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_bordercolor = return0
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.proc _bgcolor
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tax
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lda BGCOLOR ; get old value
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stx BGCOLOR ; set new value
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pha
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lda colors,x
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pha
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ldy #$3F
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ldx #0
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jsr ppubuf_put
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pla
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pha
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ldy #$3F
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ldx #4
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jsr ppubuf_put
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pla
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pha
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ldy #$3F
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ldx #8
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jsr ppubuf_put
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pla
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ldy #$3F
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ldx #12
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jsr ppubuf_put
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pla
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rts
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.endproc
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.rodata
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colors: .byte $0f ; 0 black
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.byte $3d ; 1 white
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.byte $04 ; 2 red
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.byte $3b ; 3 cyan
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.byte $14 ; 4 violet
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.byte $1a ; 5 green
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.byte $01 ; 6 blue
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.byte $38 ; 7 yellow
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.byte $18 ; 8 orange
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.byte $08 ; 9 brown
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.byte $35 ; a light red
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.byte $2d ; b dark grey
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.byte $10 ; c middle grey
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.byte $2b ; d light green
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.byte $22 ; e light blue
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.byte $3d ; f light gray
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