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From: patrick@usage.csd.unsw.oz.au (Patrick Young)
Newsgroups: comp.sys.dec
Subject: VT1000 Architecture
Keywords: VAX
Message-ID: <795@usage.csd.unsw.oz.au>
Date: 9 Aug 90 04:29:04 GMT
Organization: Computing Services Dept, UNSW, Australia
Lines: 12

Hi, anyone from DEC reading this group that knows about the VT1000 ?
My VT1000 has two meg of memory and occasionally crashes when lots
of output is written to a window and it has to scroll fast. I guess
its running out of memory. When it crashes it clears the screen and
puts up an error message ILLEGAL OPCODE 28 and a number of what look
like 32 bit registers. My question is whats the story with this machine
is it actually a VAX (opcode 28 is a MOVC3 instruction) if so then
what sort of VAX is it ?  Would it be theoretically possible to put
some larger capacity memory SIMMS in it and an a suitable ROM to 
allow it to boot VMS and become a single user workstation ?

    Patrick Young - University Of New South Wales