Puzzle for Doug...

Chris Pirih proverbs at wolfenet.com
Wed Jul 29 13:43:32 PDT 1998


At 11:27 AM 07/29/1998 -0400, Robert G. Brown wrote:
>What if the memory was remapped to a nonexistent location?  You write
>to the location and there is nothing there.  You read from the
>location and get nulls -- obviously a parity violation but now
>remapped to a location where the error comes up as NMI.  

I like that theory!  There doesn't even have to be a write, just a
read -- machines without parity/ECC memory would return 0xFF... or
whatever, and machines with parity/ECC would NMI.

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