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From: johnl@ima.UUCP
Newsgroups: net.arch
Subject: Re: IBM RT PC virtual memory
Message-ID: <100000007@ima.UUCP>
Date: Thu, 30-Jan-86 19:02:00 EST
Article-I.D.: ima.100000007
Posted: Thu Jan 30 19:02:00 1986
Date-Received: Sat, 1-Feb-86 07:35:40 EST
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Nf-From: ima!johnl    Jan 30 19:02:00 1986


See my article in net.micro.pc on the RT PC for a discussion of how the
RT's segmentation works.  In short, the system can have up to 4K segments,
each logically up to 2^28 bytes long, and 16 segments at a time can be
mapped into your address space.  The win is that all 4K segments are
defined to the address mapping hardware, so that mapping a segment into
your address space is very cheap.  I'd be happy to answer questions if
I can.

John Levine