On Tue, 05 Apr 2011 11:33:39 -0700, "Chuck Guzis" <cclist at sydex.com>
Jameco is still selling TPB24S81 PROMs:
Looks like a pretty close match. Of course, you have to find someone
to program the darned things.
Thanks for the link. I believe the N82S186 is the same chip. The bit rot extends to this
biological entity because I now remember that I fought these nasties years ago in a
different computer in a different universe.
On Tue, 05 Apr 2011 14:36:59 -0400, Dave McGuire <mcguire at neurotica.com> wrote:
I can program them..
Thanks, but my trusty BC Micro can do the job. My first inclination, when asked to look at
the problem, was that one of the bipolar ROMs had gone south. My friend had an identical
SpectraLogic board that had died many years ago, but had the same configuration. We pulled
the PROMs and did a compare to ensure that they tracked. One of the two hardware
configuration PROMs read, but wouldn't self verify. Nor would it reprogram. Switching
the good PROM from the failed board brought the system back up. We ducked this bullet, but
getting a few spares in to go with our library of PROM content should help in the future.
Again, thanks for the help,