5 Jul
2010
5 Jul
'10
1:43 p.m.
On Mon, 5 Jul 2010, Ethan Dicks wrote:
It's been a long time since I used a CP/M card in
an Apple (like not
since 1984). With the strangeness of Woz's disk controller design,
I'm guessing you need hardware-specific-formatted disks, but can
anyone confirm/refute that?
That is correct. Apple CP/M has a unique GCR format. Same HARDWARE
issues as Apple-OS. When I did the upper level (file system) software
for "Apple Turnover", I did Apple OS, Apple CP/M, ProDos, and Apple Pascal
formats.
SVA (Sorrento Valley Associates) made an accessory disk controller for
Apple ]['s. I don't remember whether it supported MFM, or just FM, but it
did support 8"
--
Grumpy Ol' Fred cisin at xenosoft.com