Replying to a message of Mike Luther to Greg Goodwin:

 ML> !Hmmm ..

 GG>> So is anyone in the Computer Retro Challenge this year?

 GG>> Better question, if you are messing with a retro 
 GG>> computer at the moment, you could just slide on into 
 GG>> the retro challenge and just have fun with it.

 GG>> Ok, who does not know what the Retro Challenge is?

 ML> I don't.  The last time I looked my HeathKit H89 Serial #639 was still
 ML> more or less working.  It's CP/M oriented.

I have 3 of them, 2 of which I built.  One problem is that the BIOS chip loses
its memory or becomes corrupted over time and when that happens it won't boot
and the box becomes a door stop.

One of the H89s got a brain transplant back in about 1985 when I replaced
the CPU board with a Micromint SB-180 board (featured in a Byte article by Steve
Ciarcia).  The Sb-180  Used a Hitachi 64180 CPU (a Z=80 clone but with an 18 bit
address bus), 256KB of RAM, 2 serial & 1 parallel port plus a daughter
card that has
an NCR SCSI controller on it.  Got a half height floppy and a half height SCSI 20 MB 
HD and put them side by side where the full height H-89 floppy had been.

 ML> I still have the 5" floppy with the original FidoNet on it and at the
 ML> time we had just moved to 1200 baud modems from 300 baud stuff.


 ML> --> Sleep well; OS/2's still awake! ;)

 ML> Mike {at} 1:117/3001

 ML> -!- Maximus/2 3.01
 ML>  ! Origin: Ziplog Public Port (1:117/3001)

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