<From: John Lawson &lt;jpl15(a)netcom.com&gt; <fantasy of running Music IV (or Csound) under Unix on the PDP 15 with <period DACs providing signals to the Moog.... a living early 70's <music research lab. Maybe the Minc-11.... naw, never mind. Forget unix or music from a -15 it was more suited to industrial control. I did do some serious hacking with music back some using the altair to drive a string of smal 8085 based boards(one per voice). <about two weeks away from getting a pilot's license, *if* the <examiner and the weather are co-incident and *if* I pass the damn <checkride... oops, off topic. sorry. Well if you don't pass the check ride the instructor should be shot for sending you unprepared. I have a license for 20 years and a Cessna150 to enjoy it in. Docs for systems, board and the like are a resource that is underestimated. There are so many s100 systems and boards that are mostly useless without docs as it's impossible to set them up or use them. Allison