Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!umich!umeecs!gilgalad From: gilgalad@zip.eecs.umich.edu (Ralph Seguin) Newsgroups: comp.sys.amiga.tech Subject: Re: MMU + A3000 + AmigaOS2.0 == Non-crashing system? Message-ID: <3025@zipeecs.umich.edu> Date: 9 Aug 90 05:50:09 GMT References: <20927@grebyn.com> <13625@cbmvax.commodore.com> <6315@sugar.hackercorp.com> Organization: University of Michigan EECS Dept, Ann Arbor, MI Lines: 31 In article <6315@sugar.hackercorp.com> peter@sugar.hackercorp.com (Peter da Silva) writes: >In article <13625@cbmvax.commodore.com> valentin@cbmvax (Valentin Pepelea) writes: >> Due to the popularity of Unix, we are tempted to understand operating system >> concepts in terms of how Unix has been implemented. It is very difficult to >> convince a programmer that a global addressing space is much more efficient >> and versatile than a separate addressing spaces as implemented in Unix. > >To a certain point, this is true. Eventually, though, you run out of address >bits. In the 16 bit world this has led to Split I/D segments and then segment >registers. In the 32-bit world it's just starting to happen. Time for a 64 >bit address space? > >(see comp.arch for more info) >-- >Peter da Silva. `-_-' >. The IBM POWER series has a 56 bit (I think that's the right number) address space. That's quite a bit of space 8-) See ya, Ralph gilgalad@dip.eecs.umich.edu gilgalad@zip.eecs.umich.edu gilgalad@caen.engin.umich.edu Ralph_Seguin@ub.cc.umich.edu gilgalad@sparky.eecs.umich.edu USER6TUN@UMICHUB.BITNET Ralph Seguin | In order to get infinitely many monkeys to type 565 South Zeeb Rd. | something that actually makes sense, you need to Ann Arbor, MI 48103 | have infinitely many monkey editors as well. (313) 662-1506