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From: dbert@pogo.ai.mit.edu (Douglas Siebert)
Newsgroups: comp.sys.mac.hardware
Subject: IIfx RAM access
Message-ID: <1991Mar14.024009.5193@mintaka.lcs.mit.edu>
Date: 14 Mar 91 02:40:09 GMT
Sender: daemon@mintaka.lcs.mit.edu (Lucifer Maleficius)
Organization: The Internet
Lines: 16

I read in the April MacUser about the difference between the RAM used in the
IIfx and the RAM used in the rest of the Macs.  It seems that there are
seperate input and output lines "to reduce bottlenecking".  I was wondering
if anyone knew anything about this....does it increase access times?  (i.e.
would the access time of a IIfx with 70ns RAM be any different from the access
time of a IIfx-clone (if there was such a thing) functionally identical
except for using the type of SIMMs found in other Macs?  Just curious...

Also, anyone know if System 7.0 makes use of the IIfx's DMA capability?  I
would assume someone with a IIfx and a beta copy of 7.0 would know this.
Thanks for anyone taking the time to reply!
--
________________________________________________________________________
Doug Siebert                                     dbert@albert.ai.mit.edu
MBA Student (2nd year)
The University of Iowa