mirror of
https://github.com/cc65/cc65.git
synced 2024-12-26 08:32:00 +00:00
45 lines
941 B
ArmAsm
45 lines
941 B
ArmAsm
;
|
|
; jede jede@oric.org 2017-02-25
|
|
;
|
|
|
|
.export _clrscr
|
|
.import OLD_CHARCOLOR, OLD_BGCOLOR
|
|
|
|
.include "telestrat.inc"
|
|
|
|
.proc _clrscr
|
|
; Switch to text mode
|
|
BRK_TELEMON(XTEXT)
|
|
|
|
lda #<SCREEN ; Get position screen
|
|
ldy #>SCREEN
|
|
sta RES
|
|
sty RES+1
|
|
|
|
ldy #<(SCREEN+SCREEN_XSIZE*SCREEN_YSIZE)
|
|
ldx #>(SCREEN+SCREEN_XSIZE*SCREEN_YSIZE)
|
|
lda #' '
|
|
BRK_TELEMON XFILLM ; Calls XFILLM : it fills A value from RES address and size of X and Y value
|
|
|
|
|
|
; reset prompt position
|
|
lda #<(SCREEN+40)
|
|
sta ADSCRL
|
|
lda #>(SCREEN+40)
|
|
sta ADSCRH
|
|
|
|
; reset display position
|
|
ldx #$01
|
|
stx SCRY
|
|
dex
|
|
stx SCRX
|
|
|
|
; At this step X is equal to $00
|
|
dex
|
|
; At this step X is equal to $FF
|
|
stx OLD_BGCOLOR
|
|
stx OLD_CHARCOLOR
|
|
|
|
rts
|
|
.endproc
|