lih@cunixc.cc.columbia.edu (Andrew Lih) (11/21/89)
Could anyone elaborate on how the cache slot for the Mac IIci works?
Does the type of cache (direct-mapped, associative, set-associative)
depend on the certain type of card that is placed in the slot or is
the cache fixed into a certain type of organization? I have heard
rumours that it is direct mapped only, but am not too sure about the
reliability of this comment.
Thanks.
/lih
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| @ @ | | Andrew "Fuz" Lih Columbia University Center |
< > > ___/ Academic Computing for Computing Activities |
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\____/ \ lih@cunixc.cc.columbia.edu AJLUS@CUVMB.BITNET /
\ lih@cs.columbia.edu ...rutgers!columbia!cunixc!lih |
\__________________________________________________________/noah@Apple.COM (Noah Price) (11/22/89)
In article <2228@cunixc.cc.columbia.edu> lih@cunixc.cc.columbia.edu (Andrew Lih) writes: >Could anyone elaborate on how the cache slot for the Mac IIci works? >Does the type of cache (direct-mapped, associative, set-associative) >depend on the certain type of card that is placed in the slot or is >the cache fixed into a certain type of organization? The cache connector supplies the signals needed to implement a cache. The cache card that is plugged in determines what type of cache and what size cache. For example, Daystar has a cache which is direct-mapped and 64 Kbytes in size, but neither of these specs was dictated by the cache connector. noah ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ noah@apple.com Mac IIci Hardware Design Team ...!{sun,decwrl}!apple!noah Apple Computer, Inc.
wilson@carcoar.Stanford.EDU (Paul Wilson) (11/23/89)
How big a cache can you put in this puppy? Is this one of those expandable things where you can use 1 or 4 cache chips, or something like that, or are you limited to some particular size of cache if you put one in at all? Paul R. Wilson Software Systems Laboratory lab ph.: (312) 996-9216 U. of Illin. at C. EECS Dept. (M/C 154) wilson@carcoar.stanford.edu Box 4348 Chicago,IL 60680
dwi@manta.NOSC.MIL (Steve Stamper) (11/28/89)
Does the Mac iici enable 68030 BURST mode on all RAM, or does one need the cache to use BURST mode? Does it enable BURST mode with just 1M of RAM installed? -Roger