Re: IIe 3.5 disk drive controller card

["Bill Garber" <willy46pa@comcast.net>]

"Roger Johnstone" <rojaws@orcon.net.nz> wrote in message
20050224201401776+1300@News.Individual.NET">news:20050224201401776+1300@News.Individual.NET...
: In <qh7jkyrat1.fsf@ruckus.brouhaha.com> Eric Smith  wrote:
: > Ed Eastman <noone@nowhere.net> writes:
: >> The Apple 3.5" drives all have in common that they have a variable
: >> rotation rate and can read the 800k 'standard' formatted DD disk
: >> media.
: >
: > All except Apple's earliest 3.5" drive used on the Lisa 2 and original
: > Macintosh, which only did 400K single-sided DD format, and recent
: > internal 3.5" drives on Macintoshes, which no longer support GCR.
:
: A minor correction: all Apple Macintosh drives can read and write GCR
: disks. Macs originally used variable rotation rate drives, but around
: the intoduction of the first Power Macs Apple switched to using cheaper
: drives with a fixed rotation rate but which varied the data rate instead.
: These drives and/or disk controllers are the ones that have problems
: making ProDOS 800KB disks, at least using Disk Copy.

But DiskDup+ came to the rescue there, and made it possible to
make disks from images on it. A version of it is on my web site.
On the downloads page.  :o)

Apple II Forever, Apple II Together
Bill @ GarberStreet Enterprizez
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Email - willy46pa@comcast.net