[Coco] Issues with NitrOS9 build

[Bob Devries]

Robert,

The drivers I'm using *should* be the latest. If not, then there's a problem 
with the NitrOS9 repository, since I did an update right before I built it.

Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message ----- 
From: "Robert Gault" <robert.gault at att.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Sunday, January 26, 2014 12:24 AM
Subject: Re: [Coco] Issues with NitrOS9 build


> Bob Devries wrote:
>> Well, I got it to work, but I fail to understand why.
>>
>> I changed offset $10 (DD.FMT) in LSN 0 from $07 to $03, and it boots 
>> correctly.
>>
>> That change makes the disk a 48TPI instead of 96TPI.
>>
>> Why does the TPI setting have *any* effect on the operation especially in 
>> an
>> emulator. *something's* not right here.
>>
>> Regards, Bob Devries
>> Dalby, QLD, Australia
>>
>
> Bob,
>
> I think you have an intermediate update of NitrOS-9. Some changes have 
> been made to rb1773 intended to prevent problems writing to disks 
> formatted differently from what a specific floppy drive can handle. 
> Basically a mismatch between disk format and descriptor values.
> You seem to have created 96tpi disks without having the newest rb1773 
> driver and that is preventing you from reading the disks.
>
> I just tested both MESS and VCC using the newest rb1773 with both DD.FMT 
> 48tpi and 96tpi and the disks boot correctly.
>
> I had thought the repository was updated for the new rb1773, so don't know 
> why you are having problems.
>
> Robert
>
>
>
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