Small DEC QBUS backplane
nw.johnson at ieee.org
Sat Jan 30 11:30:21 CST 2021
I'm trying to repair an LSI-11/93 that has a bus timeout problem.
Unfortunately the BA23 box it normally sits in lives in a cupboard with
printers stowed on top of it and due to my domestic situation (small
condo) I can't get it out to scope or get a scope anywhere near it to
scope the bus.
I'm thinking that the solution would be to get a small QBUS backplane
that I can put on my desk in the middle of my test equipment.
Like a 4-slot ABAB oir even ABCD would do.
Does anybody have one they don't want? Power supply not needed.
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.johnson at ieee.org
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