Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!spool.mu.edu!snorkelwacker.mit.edu!stanford.edu!neon.Stanford.EDU!torrie From: torrie@cs.stanford.edu (Evan Torrie) Newsgroups: comp.sys.amiga.advocacy Subject: Re: Amiga OS *IS* state of the art, but the NeXT is better Message-ID: <1991Apr4.094457.23854@neon.Stanford.EDU> Date: 4 Apr 91 09:44:57 GMT Article-I.D.: neon.1991Apr4.094457.23854 References: <1991Apr3.082443.12888@mintaka.lcs.mit.edu> <*68Gc&.f1@cs.psu.edu> <1991Apr3.093614.15967@mintaka.lcs.mit.edu> Sender: torrie@neon.Stanford.EDU (Evan James Torrie) Distribution: usa Organization: Computer Science Department, Stanford University, Ca , USA Lines: 20 rjc@geech.gnu.ai.mit.edu (Ray Cromwell) writes: > The Mac doesn't have VM unless you count unreleased System 7. There is >another product called virtual that doesn't use an MMU Why is it then, that Virtual REQUIRES a 68851 PMMU on 68020 Macs? Could it possibly be that Virtual DOES use the MMU (in fact, it does, using 4KB paged virtual memory via the 68851 or the 68030). >but the only reason >this hack works is because Macs reference memory by double >dereferencing pointers. (They call it 'handles') As my good friend David would say, "What a load of WaldenBollocks". -- ------------------------------------------------------------------------------ Evan Torrie. Stanford University, Class of 199? torrie@cs.stanford.edu "Dear Fascist Bully Boy, Give me some money, or else. Neil. P.S. May the seed of your loins be fruitful in the womb of your woman..."