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65 lines
2.0 KiB
ArmAsm
65 lines
2.0 KiB
ArmAsm
;
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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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.export colors
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.import return0
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.include "pce.inc"
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.include "extzp.inc"
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_bordercolor := return0 ; always black
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_textcolor:
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ldx CHARCOLOR ; get old value
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sta CHARCOLOR ; set new value
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txa
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rts
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_bgcolor:
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and #$0F
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ldx BGCOLOR ; get old value
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sta BGCOLOR ; set new value
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asl a
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tay
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stz VCE_ADDR_LO
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stz VCE_ADDR_HI
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lda colors,y
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sta VCE_DATA_LO
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lda colors+1,y
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sta VCE_DATA_HI
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txa
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rts
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.rodata
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; G R B
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colors: .word ((0<<6)+(0<<3)+(0)) ; $0 black
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.word ((7<<6)+(7<<3)+(7)) ; $1 white
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.word ((0<<6)+(7<<3)+(0)) ; $2 red
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.word ((7<<6)+(0<<3)+(7)) ; $3 cyan
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.word ((0<<6)+(5<<3)+(7)) ; $4 violet
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.word ((7<<6)+(0<<3)+(0)) ; $5 green
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.word ((0<<6)+(0<<3)+(7)) ; $6 blue
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.word ((7<<6)+(7<<3)+(0)) ; $7 yellow
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.word ((5<<6)+(7<<3)+(0)) ; $8 orange
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.word ((3<<6)+(4<<3)+(3)) ; $9 brown
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.word ((4<<6)+(7<<3)+(4)) ; $A light red
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.word ((3<<6)+(3<<3)+(3)) ; $B dark grey
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.word ((4<<6)+(4<<3)+(4)) ; $C middle grey
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.word ((7<<6)+(4<<3)+(4)) ; $D light green
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.word ((4<<6)+(4<<3)+(7)) ; $E light blue
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.word ((6<<6)+(6<<3)+(6)) ; $F light gray
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;-------------------------------------------------------------------------------
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; force the init constructor to be imported
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.import initconio
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conio_init = initconio
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