OSI model 600 find

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. http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=… 7886 So I asked for a picture of the computer to make sure it wasn't just a baggie full of spare parts. http://www.best.com/~dcoward/osi600.jpg I paid for it and it arrived today. There seems to be only one empty dip socket that looks like it should not be empty. It looks like the key caps for the numbers were removed on purpose. Without taking it apart, I can see one ROM labeled "BASIC 3", and two EPROMS labeled "BASIC 4 modified 12/21/81" and "SYN 600 MOD". I found one web site that also calls this a SuperBoard II. The main board says: "Ohio Scientific Model 600 CPU @1978 Rev B" The large daughter board says: "@1980 AARDVARK". And it contains a MC6821 PIA. The small daughter board contains three 2716s labeled "REV 94 I", "REV 94 II", and "REV 94 III". All in all it looks to be in very good condition, but powering this up is going to have to wait. My wife wants my current projects off the dinner table and the analog flight simulator and the paper tape punches out of the dining room. --Doug =================================================== Doug Coward dcoward(a)pressstart.com (work) Sr Software Engineer mranalog(a)home.com (home) Press Start Inc. http://www.pressstart.com Sunnyvale,CA Visit the new Analog Computer Museum and History Center at http://www.best.com/~dcoward/analog ===================================================