On 11/26/2012 02:00 PM, sampsa at mac.com wrote: He says he's selling an AT&T Unix PC 3B1, only found a monitor and a motherboard that's untested. It'd be a pretty nifty addition to a collection, I'd love a really old school Unix machine. I'd not call the 3B1 "old school", but they're lots of fun. I've had a bunch of them over the years, including used one as my main desktop machine for a while in the late 1980s. I also worked at a store that sold and serviced them. If memory serves, the UNIX dialect that they run is SysV release 2. It's a fairly complete SysV implementation, with a nice, low-overhead GUI called "UA", for User Agent. There is no networking, but there's a (rare) Ethernet card for the machine, which was shipped with an IP stack written by Wollongong. The IP stack ran in short spurts between crashes, but you could use it to get stuff on or off the machine. I have two 3B1s now. I like them a lot. If you really want "old school UNIX", find a 3B2. Or REALLY old school, v7 on a PDP-11. -Dave -- Dave McGuire, AK4HZ New Kensington, PA