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Internet Message Format  |  1992-12-14  |  853 b 
  1. Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!spool.mu.edu!uwm.edu!ogicse!das-news.harvard.edu!spdcc!iecc!mailgateway
  2. From: johnl@iecc.cambridge.ma.us (John R. Levine)
  3. Newsgroups: comp.arch
  4. Subject: Re: Any new instructions in a i486?
  5. Message-ID: <9212140023.AA22331@iecc.cambridge.ma.us>
  6. Date: 14 Dec 92 05:23:42 GMT
  7. Article-I.D.: iecc.9212140023.AA22331
  8. References: <mike.724286911@starburst.umd.edu>
  9. Sender: Postmaster@iecc.cambridge.ma.us
  10. Organization: I.E.C.C.
  11. Lines: 10
  12.  
  13. >Did the '386 have a TLB?
  14.  
  15. Of course.  You think it looks up every virtual address in a page table in
  16. main memory?
  17.  
  18. The 386 data sheet says that the TLB is 32 entries, four-way associative.
  19. The 486's TLB is similar but with a cleverer replacement strategy.
  20.  
  21. Regards,
  22. John Levine, johnl@iecc.cambridge.ma.us, {spdcc|ima|world}!iecc!johnl
  23.