[Coco] OS-9 Level 1

[gene heskett]

On Monday, February 27, 2012 08:12:43 AM Stephen H. Fischer did opine:

> Hi,
> 
> I am thinking that NitrOS-9 has not been tested properly!
> 
> For a 80 Track 2 Sided 5.25" floppy dns must equal 3 to be able to read
> 48 TPI 5.25" disks. (OS-9 Feature)
> 
Correct, that was, if the drive finds a 1 disk in it, the driver will 
double step the drive.  This is a READ-ONLY feature, you will trash that 
disk if you try to write to it in that double track density drive.  The 
driver itself really should set that drive as read-only but doesn't. 
rb1773.dr maintainers please take note.

> For a 80 Track 2 Sided 3.5" floppy dns should also 3 but most people use
> 1.
 
This is correct, dns is 1 on a 3.5 as it has only 1 tpi, 135.

> As my 5.25" and 3.5" drives can be swapped with a switch all my 80T 2S
> floppies have dns = 3.
> 
> What I am seeing suggests that some more testing of NitrOS-9 is needed.
> 
> If some one is interested, please send me a message so I can return the
> two dsk files that are operating incorrectly.
> 
> As time permits I will be testing using John's emulator to see if OS-9
> handles the dsk properly.
> 
> It might also be "OS9" so that will be checked as there is a later
> version and an earlier version.
> 
> mailto:a_nani_mouse at mindspring.com
> 
> or my main address.
> 
> These floppies are quite full.
> 
> SHF
> 
> 
> 
> ----- Original Message -----
> From: "Wayne Campbell" <asa.rand at gmail.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Sunday, February 26, 2012 11:31 PM
> Subject: Re: [Coco] OS-9 Level 1
> 
> > The different attributes for the disks looks strange. I see there are
> > 5 listed, with the first 2 being L2, and the first one has no perms
> > set except dir and share. I can see why 214 errors are happening.
> > 
> > I'm sorry to hear one of your machines died. I hate losing a computer,
> > especially when it dies.
> > 
> > Again, thank you so much for all the effort you are making. :)
> > 
> > Wayne
> > 
> > Need to recover Basic09 I-Code source?
> > Download http://cococoding.com/wayne/decode.os9
> > 
> > asa.rand at gmail.com
> > 
> > 
> > ----- Original Message -----
> > From: "Stephen H. Fischer" <SFischer1 at Mindspring.com>
> > To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> > Sent: Sunday, February 26, 2012 9:47 PM
> > Subject: Re: [Coco] OS-9 Level 1
> > 
> >> Hi,
> >> 
> >> I found the reason for the 214  error.
> >> 
> >> SHF
> > 
> > --
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> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> 
> --
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Cheers, Gene
-- 
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