Interesting, > Atsushi Nemoto (anemo@xxxxxxxxxxxxx) writes: > > > 20KC Users Manual says it has physically indexed data cache. > > That's correct. > > > For other MIPS64 core, 5Kc has virtually indexed cache. > > Yes. > > > How about 25KF? > > Physically indexed, it's a descendent of the 20Kc core. When Yoichi said > 25Kf also has virtually indexed cache I assume s/he meant the I-cache. Here is the official MIPS Technologies line (and we kind of ought to know): o The 25KF D-cache is physically indexed (and of course physically tagged). o The 25KF I-cache is virtually indexed and virtually tagged - the tag includes the ASID to reduce the number of occasions on which you have to invalidate all the lines from a particular process. o A 25KF secondary cache, if provided, is physically indexed and tagged. -- Dominic Sweetman, MIPS Technologies (UK) The Fruit Farm, Ely Road, Chittering, CAMBS CB5 9PH, ENGLAND phone: +44 1223 706205 / fax: +44 1223 706250 / swbrd: +44 1223 706200 http://www.mips.com
