Re: Problem with Universal Disk Controller

[steve.howell@altium.com.au]

This is a bit off the topic, but does anyone know if the UDC
(630-4525) can handle a Macintosh HD20 (the old type with the 19 pin
connector)?
It would make a great way to add a HD to a IIe. The card I have has a
341-0438 ROM, but I cant find any ref to the HD20 in it.
any info would be great.

regards,
Steve.





On Feb 28, 10:05 am, "Warren 'Llama' Ernst" <wer...@gmail.com> wrote:
> 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- Hide quoted text -
>
> - Show quoted text -