If you do manage to locate a controller, I have a ton of N* software images up on my site, N*DOS, CP/M, UCSD Pascal, applications etc. Recreating them is a bit tricky as you will need to use the Horizon itself - Sunce it has no front panel you will need to install a ROM to bootstrap the transfer client - the N* CPU has space for a 1K ROM which is adaquate (If you can't program 2708s you can make an adapter to fit a more modern device). I can provide you with a very basic RAMless 8080 monitor that fits in about 500 bytes (handy if you don't know that your RAM/rest of system is working) - And you can load the client with it. Once you get the first boot disk made you are set. Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html