[Coco] high-density disks

[Mark Marlette]

Chuck,

On mine I used the density opto detector. On a 1.44MB there are two  
holes on the disk. One is density the other is WP.

That signal appears on the 34 pin interface at pin 2 as I recall.

This way you have one dsecriptor that can do 720k or 1.44mb based upon  
the disk that was placed in the drive and the hardware sets the proper  
xfer rate osc.

Mark
Cloud-9


Quoting Chuck Youse <cyouse at serialtechnologies.com>:

> 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)?
>
> C.
>
>
>
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