Re: Apple IIc external HD

[mjmahon@aol.com (Michael J. Mahon)]

Jose Ricci wrote:

>Quite a few years back it took me a week or so to write a PRODOS driver and
>connect my //c to a PC through a serial cable at 9600 bps. It also had a
>clock driver.
>It worked well. It is really slow, but it works. My //c can't do 19200
>reliably (maybe the cable wasn't well insulated).
>I don't have the program now (it vanished with others in an old disk), but
>it was a short machine language program I wrote using the PRODOS Technical
>Reference Manual and Inside PRODOS books (this one has a terminal program in
>assembler from where I took the comm routines). On the PC side I wrote a
>simple program in TurboPascal 6.0 (also using an example from a book). It
>was made to emulate a 32Mb hard disk.

Very cool, Jose!

Apple II Oasis (for the PC) provides a similar PC-based disk emulator
by interconnecting the internal Apple II game port and the PC parallel
port.  Unfortunately, the IIc does not have the annunciator outputs
needed to make this work.

If you could find your code somewhere, I'll bet that folks here would
be interested.  Adding the clock driver was a nice touch!  ;-)

-michael

 Email:  mjmahon@aol.com
 Home page:  http://members.aol.com/MJMahon/