🚀 go-pugleaf

Dumb question time. (I hate when I'M asking the dumb questions)

A co-worker is building a "no compromise" performance-oriented '386
MSDOS machine. Aside from that obvious contradiction, I have a real
question and comp.arch is the only place I expect to get an answer.

How fast do the cache chips have to be on a 33MHz 386? For main memory,
I have always believed in the "reciprocal of the clock speed" rule for
chip speed, but the caches offered on the systems under consideration
are 15-20 ns chips.  Now, I am informed by this same performance-
oriented person that the cache is all dual ported and thus has to run
twice as fast.  I have seen a lot of discussion on multi-ported memory
here, with never a mention of what is required to pull this off.
I think what I want is a very brief tutorial on what it means to multi-
port memory.  I know WHY, but I don't know HOW.

"Thank you for your support"
Marc

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