MSV11-D debugging question
jnc at mercury.lcs.mit.edu
Wed Feb 4 16:57:38 CST 2015
Finally getting back to this:
> From: Brent Hilpert
>> Again, I have a sitation where a bit is stuck on, and I'm curious to
>> see if anyone has any insight into which chip (of 3) might be causing
>> it (in an attempt to not have to try replacing them at random :-).
> (Are they 4116 memory chips in use?)
> a means to isolate which of the 3 points (ICs/pins) is the problem
> might (not guaranteed) be:
> If the state is only faulty after one of the accesses it suggests the
> according mem chip is the failure point. ... distinguish the accesses
> to the upper and lower bank to try to isolate when the circuit enters
> the faulty state, and see whether it's common to both banks or only one.
Thank you! Thank you!! Thank You!!! That worked a treat; found the bad chip
first time! Thanks again!
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