Re: Problem with Universal Disk Controller

["Warren 'Llama' Ernst" <wernst@gmail.com>]

On Feb 27, 2:20 pm, Steven Hirsch <snhir...@gmail.com> wrote:
> AppleCPM wrote:
> > Hi, y'all!
>
> >     As long as we're discussing the UDC, I thought I'd see if I could
> > clear up some of my confusion about the card.  I've had one for quite
> > some time but have been reluctant to test it because I don't know what
> > drives can be connected to it.  I did just visit the A2Wiki and see
> > that I can't use it with a 3.5 inch Unidisk drive.  My understanding
> > is that you can use up to four drives with the card and that they can
> > be either 5.25 inch or 3.5 inch drives.  Do they need to be in any
> > particular order?  Will a 1.44 MB drive work with the card?  How about
> > early Mac drives like the M0130 (I think that's the model number)?
>
> There are two firmware versions that I'm aware of.  One of them supports the
> Unidisk 3.5 and the other supports the newer 3.5" drive (no internal
> controller).  They are mutually exclusive.

And one of the firmwares definitely supports the single-sided 400k 3.5
inch Mac drives. I can remember the early ads for the UDC suggesting
you could get these now abandoned drives for a song and then use them
with your Apple II.

-Warr