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cc65/libsrc/pce/vce.s

22 lines
547 B
ArmAsm

.export vce_init
.include "pce.inc"
.segment "ONCE"
vce_init:
; Set CTA to zero
stz VCE_ADDR_LO
stz VCE_ADDR_HI
ldy #$01 ; Only background palettes
vce_clear_bank:
clx ; ldx #<$0100 ; <(16 * 16)
vce_clear_color:
stz VCE_DATA_LO ; Clear color (LSB)
stz VCE_DATA_HI ; Clear color (MSB)
dex
bne vce_clear_color
dey
bne vce_clear_bank
rts