cc65/libsrc/c64/waitvsync.s

;
; Written by Groepaz <groepaz@gmx.net>
;
; void waitvsync (void);
;

        .export         _waitvsync

        .include        "c64.inc"

_waitvsync:
@l1:
        bit     VIC_CTRL1
        bpl     @l1
@l2:
        bit     VIC_CTRL1
        bmi     @l2
        rts
add headers/fix formatting 2017-07-17 23:04:53 +00:00			`;`
			`; Written by Groepaz <groepaz@gmx.net>`
			`;`
			`; void waitvsync (void);`
			`;`
initial import from old sources 2016-02-28 21:35:46 +00:00
rename all waitvblank() to waitvsync() 2017-07-17 21:15:05 +00:00			`.export _waitvsync`
initial import from old sources 2016-02-28 21:35:46 +00:00
fixed code a bit so it compiles again :) 2017-06-17 00:26:54 +00:00			`.include "c64.inc"`
initial import from old sources 2016-02-28 21:35:46 +00:00
rename all waitvblank() to waitvsync() 2017-07-17 21:15:05 +00:00			`_waitvsync:`
initial import from old sources 2016-02-28 21:35:46 +00:00			`@l1:`
dont trash akku if possible, use VDC register when in 80column mode 2017-06-21 21:18:00 +00:00			`bit VIC_CTRL1`
fixed code a bit so it compiles again :) 2017-06-17 00:26:54 +00:00			`bpl @l1`
initial import from old sources 2016-02-28 21:35:46 +00:00			`@l2:`
dont trash akku if possible, use VDC register when in 80column mode 2017-06-21 21:18:00 +00:00			`bit VIC_CTRL1`
fixed code a bit so it compiles again :) 2017-06-17 00:26:54 +00:00			`bmi @l2`
initial import from old sources 2016-02-28 21:35:46 +00:00			`rts`