mirror of
https://github.com/cc65/cc65.git
synced 2024-11-19 21:32:19 +00:00
29 lines
517 B
ArmAsm
29 lines
517 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 2002-12-03
|
||
|
|
;
|
||
|
|
; unsigned char __fastcall__ get_tv (void);
|
||
|
|
; /* Return the video mode the machine is using */
|
||
|
|
;
|
||
|
|
|
||
|
|
.export _get_tv
|
||
|
|
|
||
|
|
.include "plus4.inc"
|
||
|
|
|
||
|
|
|
||
|
|
;--------------------------------------------------------------------------
|
||
|
|
; _get_tv
|
||
|
|
|
||
|
|
.proc _get_tv
|
||
|
|
|
||
|
|
ldx #$01 ; Assume PAL
|
||
|
|
bit TED_MULTI1 ; Test bit 6
|
||
|
|
bvc pal
|
||
|
|
dex ; NTSC
|
||
|
|
pal: txa
|
||
|
|
ldx #0
|
||
|
|
rts
|
||
|
|
|
||
|
|
.endproc
|
||
|
|
|
||
|
|
|