[Coco] Issues with NitrOS9 build

[Bob Devries]

Sorry, Tormod. It was Sunday morning for me.

I tried what you suggested, but no change. It still fails with error 215. At 
least, it does so on VCC.

However, I think I now see the problem...

If I change the byte at $10 of LSN0 to $03, it boots.

I found that the dmode of D0 has TYP set to 21 and dns set to 01. AFAIK, 
this is for 3.5" disk drives *only*. That is why the later versions can't be 
read on my 'older' version of NitrOS9, since that uses TYP=20 DNS=03.

Question: when did NitrOS9 start using 3.5" drives, and is there some kind 
of option we could engineer to select 5.25" drives instead?

Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message ----- 
From: "Tormod Volden" <lists.tormod at gmail.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Sunday, January 26, 2014 5:42 PM
Subject: Re: [Coco] Issues with NitrOS9 build


> On Sun, Jan 26, 2014 at 7:15 AM, Bob Devries wrote:
>>> Gene explained (in detail) here on the list why no Coco >disk should use
>>> DNS=3 except maybe the 5.25 80trk >720k disks(??).
>>
>>
>> Which is *exactly* what I'm using, and always have. I only very rarely 
>> use
>> 3.5" disks, and in fact don't have such a drive connected now.
>
> Bob, sorry for repeating myself, but did you try the JVC header I
> suggested to you? I haven't seen your answer to this.
>
> Tormod
>
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