Re: ProDos Disk Images

[Phil Beesley <pb14@le.ac.uk>]

In article <VO5X9.49586$X7.17942730@twister.socal.rr.com>, Bryan
Villados <news002@macgeek.org> wrote:

> Very interesting! Is there anyone out there that's running the Apple IIe
> emulation card on a Macintosh Quadra 605 or LC 475, Performa 475, or
> Performa 476? All of these models (could be more but I can't remember them)
> have the LC PDS slot that can host the emulation card, but it also has the
> manual eject drive that's of discussion here. I wonder now if the issue
> about the disk controller chip would cause problems with these machines and
> the IIe card? Upgrading an LC using one of these logic board may not be a
> good upgrade afterall.

An interesting model to have a look at would be the LCIII which started
off with an auto inject drive but had acquired a manual inject one by
the time it became the LCIII+ or Performa 46x. It should give a few
clues as to whether the disk controller was changed.

My theory is that the disk controller wasn't changed in the early days
of the manual inject drive (I've written 800K floppies on first
generation PowerMacs that could be read on the IIgs but were not
bootable). The 4400 that Paul Grammens used for his test, however, is
based on the infamous Tanzania board which is very different in
architecture from any Mac that used an auto inject floppy drive so I'm
not surprised at his results.

Phil