Recent content by cbowen

I'll see if there's anything I can pull from those files. Thanks!

I have two Harris 500 control panels. The Harris H-Series was a series of 24-bit machines they called super mini-computers in the late 70's and early 80's. I think it would be fun to add this architecture to SimH and using blinkenbone to make one of the panels work. But, I can't seem to find any...

I have two Harris 500 control panels. The Harris H-Series was a series of 24-bit machines they called super mini-computers in the late 70's and early 80's. I think it would be fun to add this architecture to SimH and using blinkenbone to make one of the panels work. But, I can't seem to find any...

I'm working on bringing a Pertec 6860-9-75 9-track tape drive back to life. I'm looking for schematics, specifically for the server power supply D board. Bitsavers has documentation for 6x60 transports, but it's for a later generation than this one. They also have the documentation for 6660...

I managed to pick up an EAI TR-20 Analog Computer on eBay and have been working on restoring it. I created a blog at http://eai-tr20.blogspot.com/ in case anyone is interested. It's been surprisingly painless so far getting it working, considering it is about 45 years old.