[SunRescue] 3/160 won't pass diag. test

[William Janssen]

Thanks for the tips. Can't change the eeprom as the machine doesn't go
far
enough for the prompt. But will check the memory as I have had problems
with that in the past. Seems that the boards must be really fully seated
to work.

Thanks again for the ideas

Bill K7NOM

Robert D. Keys wrote:

> >
>
> It is possible the eeprom has improper values in it, because it
> did not fully come up on diag.  Poke zeros into eeprom locations
> 13 or 14 and try again.  Check the faq or the eeprom manual for
> the exact location, but at around 13 or 14 it has two values,
> one for the actual memory in the system and one for the amount
> to check in the system.  It could be yours picked up an incorrect
> amount to check, during testing, and tries to check non-existent
> ram.  Pull all ram boards but the cpu board, and try that.
> It should work on the 4M available on the 3/160 cpu, just fine.
>
> I have had errors on some memory boards on particular slots in
> backplanes that had corroded or slightly damaged connectors.
> The machine errors out at that point, during diags.  In one case
> I had a bent pin on a ram board vme connector.  In another case
> it was a bad connector on the backplane, so I can never use that
> particular slot in the backplane.
>
> Bob Keys
>
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