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57 lines
1.0 KiB
ArmAsm
57 lines
1.0 KiB
ArmAsm
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; 2016-02-28, Groepaz
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; 2017-06-26, Greg King
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; unsigned char cpeekcolor (void);
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;
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.export _cpeekcolor
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.include "c128.inc"
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_cpeekcolor:
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bit MODE
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bmi @c80
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ldy CURS_X
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lda (CRAM_PTR),y ; get color
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and #$0F
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ldx #>$0000
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rts
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@c80: lda CRAM_PTR
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ldy CRAM_PTR+1
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clc
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adc CURS_X
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bcc @s
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iny
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; get byte from VDC mem
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@s: ldx #VDC_DATA_LO
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stx VDC_INDEX
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@L0: bit VDC_INDEX
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bpl @L0
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sta VDC_DATA
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dex
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stx VDC_INDEX
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sty VDC_DATA
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ldx #VDC_RAM_RW
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stx VDC_INDEX
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@L1: bit VDC_INDEX
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bpl @L1 ; wait for blanking
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lda VDC_DATA
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and #$0F
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; translate VDC->VIC colour
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vdctovic:
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ldy #$0F + 1
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@L2: dey
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cmp $CE5C,y
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bne @L2
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tya
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ldx #>$0000
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rts
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