OSI model 600 find

From: Bill Sudbrink <bills_at_adrenaline.com>
Date: Tue Jul 25 17:37:58 2000

> It's been a while since I have picked-up any _digital_
> computers, but I just could not resist this. I found
> someone selling a Ohio Scientific Model 600 on eBay,
> and when I went to check was it sold for, I discovered
> that no one wanted to bid the $20 minimum bid.

Sigh... I kept meaning to email that guy. Oh well, at least
it went to a good home.

> The main board says:
> "Ohio Scientific Model 600 CPU _at_1978 Rev B"

I can give you full schematics for this guy. I've got the
SAMs.

> The large daughter board says:
> "_at_1980 AARDVARK". And it contains a MC6821 PIA.

I have some Aardvark schematics and assembly/troubleshooting
manuals (well, not manuals really, stapled together xeroxed
sheets). I think I have that board. Does a parallel port
and 8K of 2114 static RAM.

> The small daughter board contains three 2716s labeled
> "REV 94 I", "REV 94 II", and "REV 94 III".

I think that's an Aardvark board too... no idea what's on the
EPROMs though...
Received on Tue Jul 25 2000 - 17:37:58 BST