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Mail Archives: djgpp/1996/11/29/19:25:59

From: gpt20 AT thor DOT cam DOT ac DOT uk (G.P. Tootell)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Optimization
Date: 29 Nov 1996 23:47:12 GMT
Organization: University of Cambridge, England
Lines: 13
Sender: gpt20 AT hammer DOT thor DOT cam DOT ac DOT uk (G.P. Tootell)
Message-ID: <57nsm0$cvp@lyra.csx.cam.ac.uk>
References: <57hg9b$or5 AT kannews DOT ca DOT newbridge DOT com> <329C95AD DOT C3E AT silo DOT csci DOT unt DOT edu> <57k531$5bu AT kannews DOT ca DOT newbridge DOT com> <slrn59ubiq DOT nb DOT nxk3 AT b63526 DOT student DOT cwru DOT edu>
NNTP-Posting-Host: hammer.thor.cam.ac.uk
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

|>   "To gain efficiency in the implementation of the internal cache, storage is
|>   allocated in chunks of 128 bits, called cache lines.  External caches are not
|>   likely to use cache lines smaller than those of the internal cache."
|>   [...]
|>   "To simplify the hardware implementation, cache lines can only be mapped to
|>   aligned 128-bit blocks of main memory."

ok. i'm confused now. i thought the cache was 32 bytes but 128 bits is 16 bytes
no? so just how big is the cache :) or did it change between the 486 and pentium?

nik

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