OSI Challenger III Clean-Up

[glitch]

Just finished writing up my clean-up of my Challenger III:

http://www.glitchwrks.com/2016/04/20/ch ... -3-cleanup

Apparently it was in our front room in NY when our brilliant contractor cut the old unused chimney off -- without covering the fireplaces! There was a nice thick coat of soot and lime mortar dust on everything inside. I had to disassemble the whole thing, remove the power supplies, et c.

Getting ready to write up how to build a RAM board using one of the OSI 495 prototype boards I duplicated.

In the process, I created a little copy of the OSI logo from a scan of an old print ad:

http://www.glitchwrks.com/images/osi/osi_logo.png

I've got the full-size (500+ px wide) original as a Gimp XCF file if anyone needs it.