mirror of
https://github.com/cc65/cc65.git
synced 2024-11-19 06:31:31 +00:00
63 lines
1.8 KiB
ArmAsm
63 lines
1.8 KiB
ArmAsm
;
|
|
; Ullrich von Bassewitz, 21.06.2002
|
|
;
|
|
; void __fastcall__ tgi_init (unsigned char mode);
|
|
; /* Initialize the given graphics mode. */
|
|
|
|
|
|
.include "tgi-kernel.inc"
|
|
.include "tgi-error.inc"
|
|
|
|
.importzp ptr1
|
|
.import _tgi_done
|
|
.import _tgi_setcolor
|
|
.export _tgi_init
|
|
|
|
_tgi_init:
|
|
pha ; Save mode
|
|
jsr _tgi_done ; Switch off graphics if needed
|
|
pla
|
|
sta _tgi_mode ; Remember the mode
|
|
jsr tgi_init ; Go into graphics mode
|
|
jsr tgi_geterror ; Get the error code
|
|
sta _tgi_error ; Save for later reference
|
|
cmp #TGI_ERR_OK
|
|
bne @L9 ; Jump on error
|
|
|
|
; Do driver initialization. First set the default palette.
|
|
|
|
jsr tgi_getdefpalette ; Get the default palette into A/X
|
|
sta ptr1
|
|
stx ptr1+1
|
|
ora ptr1+1 ; Do we have a default palette?
|
|
beq @L1 ; Jump if no
|
|
jsr tgi_setpalette ; Set the default palette
|
|
|
|
; Set the drawing color to the maximum color
|
|
|
|
@L1: ldx _tgi_colorcount
|
|
dex
|
|
txa
|
|
jsr _tgi_setcolor ; tgi_setcolor (tgi_getmaxcolor ());
|
|
|
|
; Set the text style
|
|
|
|
lda #TGI_TEXT_HORIZONTAL
|
|
sta _tgi_textdir
|
|
ldx #1
|
|
stx _tgi_textmagx
|
|
ldy #1
|
|
sty _tgi_textmagy
|
|
jsr tgi_textstyle ; Tell the driver about the text style
|
|
|
|
; Clear the screen
|
|
|
|
jmp tgi_clear
|
|
|
|
; Error exit
|
|
|
|
@L9: lda #$00
|
|
sta _tgi_mode ; Clear the mode if init was not successful
|
|
rts
|
|
|