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Subject: Re: [stella] 2600 Digital Clock (Demo) From: crackers@xxxxxxxx Date: Fri, 3 Oct 1997 19:27:13 -0400 (EDT) |
Well gang, something has just completely boggled my mind.
There's some sort of problem with this clock routine that I just
can't figure out.
Each minute takes one more second than the minute before it took and
I can't figure out why that is. Is it something in this decreasing clock
routine that causes this? Or something in another psrt of my programme?
----------------------------------------------------------------------------
LDA #$3C
DEC FRAMES
BNE joy
;lda #$3C
STA FRAMES
DEC SECS
BNE joy
STA SECS
DEC MINS
BNE joy
STA MINS
LDA #$18
DEC HOURS
BNE joy
STA HOURS
-----------------------------------------------------------------------------
If I change the LDA to #$3B, then each minute takes one second less than
the minute before it.
I am utterly perplexed?
Hmmm.... could it have anything to do with the fact that the clock counting
routine is placed in the overscan and the clock sprite loading routine is
placed in the vertical blank?
CRACKERS
(Very confused from hell!!!!)
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