Re: Apple III Intelligent Uni/Duo Controller - What is it?

[mdj <mdj.mdj@gmail.com>]

On Jul 20, 2:43 am, "Bill W." <billspam...@gmail.com> wrote:
> I've recently begun playing with my Apple III, after a decade or more
> of it sitting on a shelf.  I don't have an external floppy, so when I
> saw an item on eBay named "Apple III Intelligent Uni/Duo Controller,"
> I figured it was obviously a Unidisk / Duodisk controller for the
> apple III and placed a bid.  And, despite the fact that Apple III
> stuff usually gets bid up far higher than I am willing to pay, I won
> this for a surprisingly low amount.

It's difficult to see how its anything other than what it says it is,
since it looks like a slightly more integrated Disk ][ controller with
a processor and buffer RAM.

I suspect this is an "Apple III product differentiation" attempt,
allowing a Unidisk or DuoDisk drive to be attached and run faster than
it would on an Apple II. I also suspect a straight through DB-25 cable
is all that's needed to attach it to a DuoDisk unit.

As others have said, without the driver it's going to be something of
an ordeal to make it do something useful.

Matt