Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!mailrus!tut.cis.ohio-state.edu!rutgers!mit-eddie!bu-cs!mirror!necntc!necis!puck!asp
From: asp@puck.UUCP (Andy Puchrik)
Newsgroups: comp.society.futures
Subject: Re: Memories...
Summary: same virt mem size
Message-ID: <354@puck.UUCP>
Date: 21 Dec 88 01:55:18 GMT
References: <8812200325.AA12574@multimax.encore.com>
Organization: Moonlight Systems, Concord, MA
Lines: 15

In article <8812200325.AA12574@multimax.encore.com>, bzs@ENCORE.COM (Barry Shein) writes:
> The address space on most CPUs today is 32 bits (hmm, for arguable
> values of "most", well, very common anyhow.) In fact, it's usually a
> little less, 31 bits is often all you can use. That's 2GB or two or
> four of those boards, not a whole lot. Then bango, you're full up,
> can't use anymore physical memory. Anyone know what the address space
> is for the RISC processors which are becoming so popular?

The ever-popular MIPS R2000 has a 4Gb address range, but the address space
is divided into 2 Gb for users and 2 Gb for the kernel.  The TLB
(Translation Lookaside Buffer) gives each user up to 2 Gb of virtual
address space.
-- 
Internet: asp@puck.UUCP				Andy Puchrik
uucp: decvax!necntc!necis!puck!asp		Moonlight Systems
ARPA: puchrik@tops20.dec.com			Concord, MA 01742