[Coco] OS-9 Level1 Version 02.00.00 FYI

[Dave Philipsen]

Yeah, for the CoCo that’s true. 

-Dave Philipsen

> On Apr 21, 2020, at 6:54 AM, Gene Heskett <gheskett at shentel.net> wrote:
> 
> On Tuesday 21 April 2020 07:46:06 Dave Philipsen 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.
>> 
> But thats wrong Dave, L2 is 1/60th (nominally as it is at virq from the 
> gime.)
> 
>> -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
> 
> 
> Cheers, Gene Heskett
> -- 
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