[Coco] Issues with NitrOS9 build

[Bill Pierce]

Bob, on 3.2.9, I cannot read any disk with DNS=3 unless the disk was formatted that way, Then that descriptor will ONLY read disks formatted with DNS=3. I have to dmode to DNS=1 to read "average" disks. If I remember right, Gene explained (in detail) here on the list why no Coco disk should use DNS=3 except maybe the 5.25 80trk 720k disks(??).

5.25 35/40trk 180k/360k & 3.5 80trk 720k should be DNS=1.
The only difference besides the size (CYL & SID) should be 5.25 40trk TYP=20 & 3.5 80trk TYP=21


Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Webmaster of The TRS-80 Color Computer Archive
http://www.colorcomputerarchive.com/
Co-Contributor, Co-Editor for CocoPedia
http://www.cocopedia.com/wiki/index.php/Main_Page
E-Mail: ooogalapasooo at aol.com




-----Original Message-----
From: Bob Devries <devries.bob at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sun, Jan 26, 2014 12:48 am
Subject: Re: [Coco] Issues with NitrOS9 build


I am using NitrOS9 v030206 on my coco3. It behaves correctly (IMHO) with 
offset $10 of LSN0 set to $07, and the DMODE (of /D0) DNS=03 TYP=20

Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message ----- 
From: "Bill Pierce" <ooogalapasooo at aol.com>
To: <coco at maltedmedia.com>
Sent: Sunday, January 26, 2014 3:13 PM
Subject: Re: [Coco] Issues with NitrOS9 build


>
> Bob, are you pulling from the "default" now? as that is the new current. 
> The lwtools branch is now the old.
>
>
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
>
>
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Webmaster of The TRS-80 Color Computer Archive
> http://www.colorcomputerarchive.com/
> Co-Contributor, Co-Editor for CocoPedia
> http://www.cocopedia.com/wiki/index.php/Main_Page
> E-Mail: ooogalapasooo at aol.com
>
>
>
>
> -----Original Message-----
> From: Bob Devries <devries.bob at gmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Sun, Jan 26, 2014 12:02 am
> Subject: Re: [Coco] Issues with NitrOS9 build
>
>
> 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
>>
>>
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco 


--
Coco mailing list
Coco at maltedmedia.com
http://five.pairlist.net/mailman/listinfo/coco