[Coco] Old 6809-based computers

Stephen H. Fischer sfischer1 at mindspring.com
Sat Jun 26 17:32:10 EDT 2004


I have one to add to the list.

It was an actual product made by Synertek.

I /may/ have the only one that was sold. I have no hints that others were

I bothered SYNERTEK to get it done and received S/N 0000001.  :D

It was a 6809 CPU replacement for the 6502 CPU in the SYNERTEK SYM-1.

It required a satellite board to provide the correct 6809 Clocks and try to
make the single stepping possible.

The SYM-1 6502 monitor program was rewritten for the 6808 CPU.

I had FLEX running on it but it was the CoCo2 that allowed me to do anything

Stephen H. Fischer <sfischer1 at mindspring.com>

smostrom at mn.rr.com wrote:
> Recently there was some discussion on this list of embedded 6809's.  I
> seem to recall that there were some other early 6809-based computers,
> other than our Coco and the Dragon.  Does anyone have any experience with
> or knowledge of any of these?  Were any even remotely compatible with the
> Coco?  The ones I've heard of but know very little about are:
> Bestcom GTX-1000 from Graphtek Corp. (a home computer)
> Fujitsu FM-8 (two 6809's)
> Hitachi MB-6890
> Canon CX-1
> Thanks!
> -- Steve --

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