Re: One for the hardcore collectors

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

On May 30, 4:59 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
> mdj wrote:
> > On May 29, 7:59 am, b...@bob.us wrote:
>
> >>actually, other than the dual unidisk drive, there's nothing there. the
> >>other 3.5" drive is an 800k macintosh drive which won't work with the 2c
> >>neither will the '107' 5.25" drive which is for a 2gs and a 2c+. only the
> >>external disk 2c will work with the 2c. as well, the 2c itself is pretty
> >>weathered and yellowed as is the dual drive.
>
> > That's right, but the dual drive, which probably would have been
> > marketed as the DuoDisk 3.5" was never actually released, most likely
> > because of the very high cost. It's still a cool thing to have - heck,
> > even UniDisk 3.5"s are hard enough to find these days.
>
> > The rest of it is of course pretty regulation stuff, and not
> > particularly good examples.
>
> > FWIW, the logic board in the UniDisk 3.5" can support two drive
> > mechanisms, so a sufficiently determined person can add an AppleDisk
> > 3.5" as a second drive with a bit of shuffling about.
>
> It certainly is capable of connecting two drives, but there seem to
> be several parts left off of the single drive boards that would need
> to be added for two-drive operation.
>
> It looks like Q102, Q104, Q105, R119, R120, C115, and R122 are
> missing.

Hence my "sufficiently determined" remark :-) It shouldn't be too
difficult to determine the relevant parts, since the same circuitry is
present for the 'working' connector.

Matt