Re: A parallel interface for PET, VIC-20 and C64/C128

From: Marko Mäkelä (
Date: 1999-08-04 15:24:50

On Wed, 4 Aug 1999, Frank Kontros wrote:

> My version copies one 1541 diskside under 25 sec.

That's very impressive.  Are you still decoding the GCR in the drive?

> That usable only for software's. But what about changing firmwares?

You mean a cartridge that can be inserted to any type of Commodore?  Have
the C64-style cartridge port connector on one short side, VIC-20 on a long
side, and plus/4 on another short side.  And just one EPROM chip on the
cartridge, of course. :-)  But it'd be easy to cheat: use e.g. a 27256 and
assign an 8-kilobyte bank for each type of computer.

I think that it was George Taylor who had the idea of creating a disk that
would work on as many types of computers as possible.  Commodores wouldn't
be so difficult, since the directory area is in the middle of the disk,
while most other systems have it on the outmost tracks.  And most other
systems use FM or MFM, or are there any others than Commodore and Apple
who used something else?

BTW, there are two bugs in your mail program: it uses BASE64 encoding in
the To: header in an improper way, and it changes the Re: prefix to


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