[Info-vax] Y3K for PDP-11 Operating Systems

Bob Koehler koehler at eisner.nospam.encompasserve.org
Tue May 10 13:58:42 EDT 2011


In article <4dc972d1$0$73606$815e3792 at news.qwest.net>, G Cornelius <cornelius at eisner.decus.org> writes:
> Johnny Billquist wrote:
> 
> References to a 1-1 MOVTUC table are basically wasted memory
> accesses, and, in fact, will be mostly cache misses until a
> significant proportion of the table has been loaded.  Not to
> mention having flushed information out of cache, resulting in
> likely cache misses later.  Also: these are per-byte cache misses,
> where actual data fetches should load four, eight, or even more
> soon to be used bytes into cache whenever a miss occurs.

   Caches have got large, and most likely misses would all be resolved once
   early in program execution.




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