Looking for Northstar Horizon double-density floppy controller
dave06a at dunfield.com
Wed Apr 18 07:08:51 CDT 2007
> The subject says it all -- acquired a complete Northstar Horizon sans
> floppy controller a long time ago. I'd love to get this machine
> running, it's been sitting around dormant for so long, and it's
> basically useless without a floppy controller.
> If you have one you're willing to sell/trade for, let me know.
> Also looking for software if anyone can provide copies -- I have the
> HD-5 controller/drive so a copy of HDOS would be fun to play around
> with. CP/M would be nifty as well...
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.
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
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