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Path: utzoo!linus!security!genrad!decvax!harpo!eagle!allegra!alice!rabbit!ark
From: ark@rabbit.UUCP
Newsgroups: net.micro.pc
Subject: IBM PC/XT 370
Message-ID: <2102@rabbit.UUCP>
Date: Fri, 21-Oct-83 10:57:57 EDT
Article-I.D.: rabbit.2102
Posted: Fri Oct 21 10:57:57 1983
Date-Received: Sat, 22-Oct-83 08:32:37 EDT
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 19

This machine is, in effect, an IBM PC with an extra board
(actually three boards) that executes 370 problem-state instructions.
It has memory management, and presumably has virtual memory, because
while there's only 512K for the 370 part, it can address up to 4MB of
virtual memory.  There's an additional 256K for the 8088 part, bringing
the total memory up to 768K.  Floating-point is included.

Except for the 370 cards, the machine is a normal PC/XT.  There is,
in fact, an upgrade kit that converts a 256K PC/XT to a PC/XT 370.  The
kit contains three boards, an instruction book, and a new nameplate (!).

Their first software offering for this machine is called VM/PC.  Apparently,
it's a slightly modified version of CMS to run in the 370 part, and a
simulation of the CMS interface of VM/370 to run in the 8088 part.
One can apparently run normal CMS load modules on the machine.

Prices can be inferred from the fact that the upgrade kit costs slightly
more than $3700.  Upgrading a PC/XT is not significantly more expensive
than buying an XT 370 to start.