[Coco] OS-9 Level1 Version 02.00.00 FYI

[phil pt]

Hi

Is someone here still using the old coco1? That was my first computer, but
I moved on to the Coco3.



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On Tue, Apr 21, 2020 at 7:46 AM Dave Philipsen <dave at davebiz.com> wrote:

> I believe you are correct in that, nominally, the time slice for Level 1
> is 1/10 of a second and for Level 2 is 1/100 of a second. I have seen that
> referenced in a number of OS9 manuals.
>
> -Dave Philipsen
>
> > On Apr 21, 2020, at 12:18 AM, Walter Zambotti <zambotti at iinet.net.au>
> wrote:
> >
> > Yes Virq is 1/60 sec.
> >
> > However I was referring the system clock. Which I (mistaking thought)
> was 1/100 of a second.
> >
> > I checked in Nitros9 and Os9 tech manuals and it states time slice is
> 1/60th.
> >
> > I'm not sure why (apart from old age) I have a clear recollection of
> seeing the original Os9 had a time slice of 1/10 sec and the later Os9 was
> 1/100th.
> >
> > Well if 1/60th is the case I have no explanation why tstfs2.asm is not
> picking up the correct Virq timing in the emulators.
> >
> > Since last email I wrote a little C app to access the VRN driver and
> test the Virq rate (like tstfs2) and that works as expected even on the
> emulator.
> >
> > So now I'm really stumped.
> >
> > -----Original Message-----
> > From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of L. Curtis
> Boyle
> > Sent: Tuesday, 21 April 2020 12:56 AM
> > To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> > Subject: Re: [Coco] OS-9 Level1 Version 02.00.00 FYI
> >
> > The Coco VIRQ is indeed based on 1/60th of a second, not 1/100th
> >
> > Sent from my iPhone
>
>
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