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.
OSI Challenger III Clean-Up
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OSI Challenger III Clean-Up
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OSI Challenger 3, 510 CPU, 8" floppies, 23 MB hard disk system starting to work!
Parts bin Challenger 3 board set, never had a chassis in its time
OSI Challenger 3, 510 CPU, 8" floppies, 23 MB hard disk system starting to work!
Parts bin Challenger 3 board set, never had a chassis in its time