Re: Apple HD20 on an A2

[supertimer@aol.com (Supertimer)]

"Paul Grammens" <grammens@svn.net> wrote:

>There is a forsale post on comp.sys.apple2.marketplace for an Apple HD20,
>the one that runs off a Mac floppy port. It says the disk is formatted
>ProDos, and can be used on an Apple II.  Is this true? If so, anyone have
>any experience with this, who can say how to get one working with an A2?
>(which models it works with, any formatting or driver software required.)

Possible but rare.  You need the earliest version of the Universal
Disk Controller (Laser brand).  This version had one rather than
two ports and is a long card rather than the later short ones.

This would only really be useful on a IIe with such a card, though.
There is no GS/OS driver for using the UDC, so the drive will not
work under GS/OS even if you had the early version of the UDC.
It is only a ProDOS 8 (or GEOS) card.  If you use it on a IIGS, it
would also be limited to ProDOS 8.