Yeah, this is correct. It counts down once per 6507 cycle.
-Chris
On Tue, 11 May 2004 mathys66@xxxxxxxxxx wrote:
> i thought the timer counts always down (at least all my code relies on that,
> and seems to work) ?
>
> quoting the data sheet:
> "When the timer has counted thru 00000000 on the next count time an interrupt
> will occur and the counter will read 11111111. After interrupt, the timer
> register decrements at a divide by "1" rate of the system clock..."
>
> so what you have to take care of is that after the timer expired, it will
> run at the osc's frequency, rather than at oscfreq/64.
>
> ???
>
> cheers
> thomas
>
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