mirror of
https://github.com/cc65/cc65.git
synced 2024-06-15 02:29:32 +00:00
31 lines
448 B
ArmAsm
31 lines
448 B
ArmAsm
;
|
|
; Written by Groepaz <groepaz@gmx.net>
|
|
;
|
|
; void waitvsync (void);
|
|
;
|
|
|
|
.export _waitvsync
|
|
|
|
.include "c128.inc"
|
|
|
|
_waitvsync:
|
|
|
|
bit MODE
|
|
bmi @c80
|
|
|
|
@l1:
|
|
bit VIC_CTRL1
|
|
bpl @l1
|
|
@l2:
|
|
bit VIC_CTRL1
|
|
bmi @l2
|
|
rts
|
|
|
|
@c80:
|
|
;FIXME: do we have to switch banks?
|
|
@l3:
|
|
lda VDC_INDEX
|
|
and #$20
|
|
beq @l3
|
|
rts
|