Re: An USB interface for Disk2?

The disk II interface has already been reverse engineered and is well documented in a number of texts. "Understanding the Apple II" by Jim Sather is one example. I doubt that transferring components will save much, if any, design time over a new implementation. With the vast increase in speed of modern micro-controllers over 1978 technology, I seriously doubt that the PROM sequencer at the heart of this controller is necessary.

Regards,
Mike Willegal

Steve ][ wrote:
I wonder what it would take to remove existing ICs, etc from
associated Apple II hardware and "rehost" it in a PC (PCI card) to
connect a UniDisk 5.25 or 3.5 drive.

There used to be a Mac+ portable clone called "Kangaroo". The Kangaroo
company sold you an "empty" Kangaroo computer along with a Mac+, and
you then ttransfererd ASICs from the Mac+ to the Kangaroo, and then
sold them back the Mac+. The idea kept Kangaroo out of legal trouble
and provided the portable Macintosh that some people wanted at the
time

. I was thinking the same idea of just pulling what you need from a
live ][ might do the trick faster than trying to reverse engineer
stuff. Relatively speaking, disk controller "guts" might be
plentiful...






On Wed, 24 Oct 2007 01:50:14 GMT, Mike Willegal <mike@xxxxxxxxxxxx>
wrote:


Now that my rev 0 project is more or less complete, I'm looking for more challenges.

I'm kind of annoyed with having to move files to my Apple II via the serial port. Sneakernet has it's advantages.



[snip]


.

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