pjh@mccc.uucp (Pete Holsberg) (08/15/90)
For a 25MHz 80386 memory, what's the maximum access time RAM I should use? What does it depend on? Would having a memory cache make a difference? Thanks, Pete -- Prof. Peter J. Holsberg Mercer County Community College Voice: 609-586-4800 Engineering Technology, Computers and Math UUCP:...!princeton!mccc!pjh 1200 Old Trenton Road, Trenton, NJ 08690
chaz@chinet.chi.il.us (Charlie Kestner) (08/16/90)
In article <1990Aug14.215402.20030@mccc.uucp> pjh@mccc.uucp (Pete Holsberg) writes: >For a 25MHz 80386 memory, what's the maximum access time RAM I should >use? What does it depend on? Would having a memory cache make a difference? > >Thanks, >Pete >-- >Prof. Peter J. Holsberg Mercer County Community College >Voice: 609-586-4800 Engineering Technology, Computers and Math >UUCP:...!princeton!mccc!pjh 1200 Old Trenton Road, Trenton, NJ 08690 MOST 386s now have the cache controller, since it's the only way they can get near-zero wait-states. (Seem to recall on my AMI 33mhz, the read "hit rate" is 80%, dunno the write "hit rate". Seem to recall the docs said "1 wait state on writes".) I have 70ns DIPs on my 33mhz, so you should expect to have near the same speed on a 25mhz, perhaps 80ns. Your name looks really familiar. Did we used to blab in the CP/M SIG on Compuserve, mebbe about 1985 or so?