cc65/libsrc/pce/ticktock.s

        .interruptor    ticktock

        .include        "extzp.inc"

ticktock:
        bbr5    vdc_flags,@s1   ; skip if not vertical-blank interrupt

        ; Increment the system tick counter.
        inc     tickcount
        bne     @s1
        inc     tickcount+1
        bne     @s1
        inc     tickcount+2
        bne     @s1
        inc     tickcount+3

@s1:    rts
Fixed bugs; and, improved the efficiency of some pce library functions. 2015-11-26 20:06:20 +00:00			`.interruptor ticktock`
added interruptor support 2015-09-19 13:55:43 +00:00
			`.include "extzp.inc"`

			`ticktock:`
Fixed some mistakes (mostly in the documentation). 2015-10-02 17:28:17 +00:00			`bbr5 vdc_flags,@s1 ; skip if not vertical-blank interrupt`
added interruptor support 2015-09-19 13:55:43 +00:00
			`; Increment the system tick counter.`
			`inc tickcount`
			`bne @s1`
			`inc tickcount+1`
			`bne @s1`
			`inc tickcount+2`
			`bne @s1`
			`inc tickcount+3`

			`@s1: rts`