PDP-11/45 RSTS/E boot problem

Brent Hilpert bhilpert at shaw.ca
Wed Feb 6 16:24:41 CST 2019

On 2019-Feb-06, at 1:21 PM, Noel Chiappa via cctalk wrote:
>> From: Brent Hilpert
>> what about the refresh circuitry of the memory board?
>> ...
>> It might also explain why a number of 4116s were (apparently) failing
>> earlier in the efforts ... replacing them might have just replaced them
>> with 'slightly better' chips, i.e. with a slightly longer refresh tolerance.
> Ooh, excellent idea!

Is the schematic available for the memory board at-issue?
Curious myself to see what approach for refresh DEC used.

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