LL PCB repair

From: xray2 (Steve) <xray2_at_arcadehacking.com>
Date: Thu Feb 21 2013 - 13:05:10 EST

Andre,

I'm out on business travel right now but can send you my notes for
testing the LL board with the fluke when I return home this weekend.
It's probably not a lot but I have the checksums, memory and I/O ranges
mapped out. If you think it will help I can convert them from paper to
electronic for you.

Oh, and YES, you only need +5 on any of the vector boards for testing.
I believe asteroids and newer require an about 11.3v on the input of one
of the tl082 opamps to drive the output high and start the clock. You
can't damage anything by not applying the +/-22.

-- Steve

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Received on Thu Feb 21 14:14:28 2013

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