mirror of
https://github.com/cc65/cc65.git
synced 2024-07-07 04:29:01 +00:00
29 lines
730 B
ArmAsm
29 lines
730 B
ArmAsm
|
; 2019-07-02, Jede (jede@oric.org)
|
||
|
|
;
|
||
|
|
|
||
|
|
.export _bgcolor
|
||
|
|
.import BGCOLOR
|
||
|
|
.import BGCOLOR_CHANGE
|
||
|
|
.include "telestrat.inc"
|
||
|
|
|
||
|
|
.proc _bgcolor
|
||
|
|
cmp BGCOLOR ; Do we set the same color? if we don't detect it, we loose one char on the screen for each textcolor call with the same color
|
||
|
|
bne out ; Yes
|
||
|
|
lda #$00
|
||
|
|
sta BGCOLOR_CHANGE
|
||
|
|
|
||
|
|
lda BGCOLOR ; Return last color
|
||
|
|
|
||
|
|
rts
|
||
|
|
out:
|
||
|
|
ldx BGCOLOR ; Get last color in order to return it
|
||
|
|
sta BGCOLOR
|
||
|
|
|
||
|
|
lda #$01 ; Notify the change color
|
||
|
|
sta BGCOLOR_CHANGE
|
||
|
|
txa ; Return previous color
|
||
|
|
rts
|
||
|
|
.endproc
|
||
|
|
|
||
|
|
|