Do you have the manuals? You'll need to check the port definitions that are set via jumpers on the open DIPs near the back of the motherboard. Also, I seem to recall that North Star DOS was generated for a specific RAM size -- I believe it's top-resident. A DOS set up for 16K would work on 32K or 48K, but not vice versa. Kai -----Original Message----- From: David Williams [mailto:dlw@trailingedge.com] Sent: Tuesday, October 06, 1998 3:38 PM To: Discussion re-collecting of classic computers Subject: North Star Horizon Help Ok, I have a few minutes now to play around with the N* Horizon I've been fixing up. I've tried to power it up and it seems to hit the disk drive and then nothing. I've plugged some spare terminals into the port marked "Video Terminal Port" and played with baud rates and other comm settings but get nothing on any of my terminals. Also tried straight through and flipped comm cables. Can someone give me some info on these and maybe walk me through getting it set up and running so I can check and see if I've missed something? Oh, I'm trying both N*DOS 5.2 and N* CP/M 2.2. Thanks. ----- David Williams - Computer Packrat dlw(a)trailingedge.com http://www.trailingedge.com