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retrolimber's latest activity
R
retrolimber
replied to the thread
Apple Lisa 2/5 starts only without I/O board - Error 41
.
Hi. I've used a logic analyzer and I saw that all the outputs of the 74LS138 were at logic 0. Meanwhile I've repaired a spare CPU board...
Apr 2, 2024
R
retrolimber
replied to the thread
Apple Lisa 2/5 starts only without I/O board - Error 41
.
Repaired!!! The problem was a bad 74LS138 in the CPU Board.
Mar 27, 2024
R
retrolimber
posted the thread
Apple Lisa 2/5 starts only without I/O board - Error 41
in
Apple I, ][, /// & Lisa
.
Hi there from Italy! I'm new here. I have a Lisa 1 computer upgraded to 2. The machine sadly is not working. I started with a bad...
Mar 25, 2024
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