CP/M on the TI-99/4A

From: Hans Franke <Hans.Franke_at_mch20.sbs.de>
Date: Mon Nov 20 06:31:53 2000

F> > different systems. There was a 6809 card for the Apple II I would
> > have killed for years ago. I'd assume these 99/4A CP/M boards

> I have a 6809 card called 'The Mill' in one of my Apple ][s. It seems to
> have come in 2 versions -- the cheaper one, which I have, doesn't have a
> ROM on it, and is used with a modified UCSD p-system. It thus speeds up
> Pascal and Fortran programs, but it otherwise not that interesting. The
> more expensive version of the card had a boot ROM on it, and would boot
> OS-9 (obviously configured for the Apple, and put on GCR disks). I now
> wish I'd got the latter version...

It seams like there are several different ROMs
available - or schould we call it different cards ?
I have at least one version with a ROM to suppurt
the Mumps system.

> It's a pretty simple card. The 6809 CPU, a few bus buffers, and a bit of
> TTL glue.

Like the original Softcard - a bit glue logic to
adapt the signaly and take over the whole system
(inhibit the 6502). There was also a 6809 Card
with seperate Memory, I just don't remember the
name.

Gruss
H.

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Received on Mon Nov 20 2000 - 06:31:53 GMT

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