Well, I'll need a clock for my virtual pet game, and unfortunately the
2600 does not have a time clock like the C-64. But I'm hoping this code
(stuck first thing into the overscan) will accomplish my time keeping
needs. Is there an easier way to do this?
----------------------------------------------------------------------------
lda FRAMES
cmp #$3C ;60 frames = 1 second (change to 50 for PAL)
bmi upfrm
lda #$00
sta FRAMES
lda SECS
cmp #$32 ;60 seconds
bmi upsec
lda #$00
sta SECS
lda MINS
cmp #$32 ;60 minutes
bmi upmin
lda #$00
sta MINS
lda HOURS
cmp #$18 ;24 hours
bmi uphrs
lda #$00
sta HOURS
inc DAYS ;new day
jmp upfrm
upsec inc SECS
lda SECS
jmp upfrm
upmin inc MINS
jmp upfrm
uphrs inc HOURS
upfrm inc FRAMES ;frame counter
-----------------------------------------------------------------------------
CRACKERS
(Time after time from hell!!!)
--
Accordionist - Wethifl Musician - Atari 2600 Collector | /\/\
*NEW CrAB URL* http://www.hwcn.org/~ad329/crab.html ***| \^^/
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