Subject: [stella] Does this look right? (clock) From: crackers@xxxxxxxx Date: Wed, 1 Oct 1997 17:16:53 -0400 (EDT) |
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 ***| \^^/ Bira Bira Devotee - FES Member - Samurai Pizza Cats Fan| =\/= -- Archives updated once/day at http://www.biglist.com/lists/stella/archives/ Unsubscribing and other info at http://www.biglist.com/lists/stella/stella.html
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