Path: chuka.playstation.co.uk!news
From: "Derek da Silva" <dasi@globalnet.co.uk>
Newsgroups: scee.yaroze.beginners
Subject: Re: Counters
Date: Sun, 21 Feb 1999 12:44:03 -0000
Organization: PlayStation Net Yaroze (SCEE)
Lines: 46
Message-ID: <7aov1r$erp14@chuka.playstation.co.uk>
References: <7ahnnv$btf15@chuka.playstation.co.uk> <7ai02v$btf20@chuka.playstation.co.uk>
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Here's some info from way back in May 1997.  Look, and ye shall find...
So, nobody knows how often the timers are incremented? :-)


>Basically, a call to GetRCnt(1) obtains the value of this
>counter; it seems to increment Very fast (not yet sure how fast),
>and its range is (we think) 0-65535 ie unsigned_short,
>and can be expected to wraparound very often (more than once
>per second).

>Sorry about the uncertainty, but we're unsure about the
>other timers and whether or nopt they're usable.
>Will post again soon.

>There are 3 root counters, 0, 1, and 2. The return values are 0-65535,
>root counter 1 is slowest. As theres no information on which root
>counter measures what, so we don't know the timings, so it'll have to be
>trial and error (1 maybe hsyncs).
>
>As for the code, something like this should do the trick.
>
>void main(void)
>{
>  printf("starting\n");
>  StartRCnt(1);        // not needed on Yaroze
>  ResetRCnt(1);
>
>  while(!kbhit())
>    {
>    if (GetRCnt(1) == 40)
>      {
>      printf("event\n");
>      ResetRCnt(1);
>      }
>    }
>  getch();
>  printf("done\n");
>}
>SCEE Developer Support

Derek
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dasi@globalnet.co.uk