[Coco] high-density disks

Joel Ewy jcewy at swbell.net
Thu Sep 18 16:23:32 EDT 2008


Chuck Youse wrote:
> Seems I can't find an appropriate density bit for IT.TYP in my 3.5"
> high-density floppy disk descriptor.  There's DNS.FM and DNS.MFM - which
> are used for single and double density, respectively.  In my case I need
> to distinguish between 250KB/s (standard MFM) and high-density
> (500KB/s), depending upon the drive attached.  Any ideas folks?  New
> DNS.blah for high-density (which I believe is _still_ MFM, technically,
> which means we'd have yet-another-misnomer to deal with)?
>
>   
My recommendation would be to try to set it up the same way it is done
in OS-9/68K on e.g. the MM/1.  I don't remember off the top of my head
what that looks like and my MM/1 is, uh, apart at the moment.  I'll try
to put it back together later today and see if I can get the results of
dmode...

JCE
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