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From: cdl@mplvax.nosc.MIL (Carl Lowenstein)
Newsgroups: comp.sys.misc,comp.lang.pascal
Subject: Re: pascal microengine...
Message-ID: <708@mplvax.nosc.MIL>
Date: 22 Jan 88 21:46:17 GMT
References: <16946@gatech.edu> <4516@sdcsvax.UCSD.EDU>
Reply-To: cdl@mplvax.nosc.mil.UUCP (Carl Lowenstein)
Organization: U.C. San Diego, Marine Physical Laboratory
Lines: 29

In article <4516@sdcsvax.UCSD.EDU> allyn@sdcsvax.UCSD.EDU (Allyn Fratkin) writes:
-In article <16946@gatech.edu>, ken@gatech.edu (Ken Seefried iii) writes:
-> This may be a bit of ancient history...but does anyone remeber the 
-> Pascal Microengine?  Who made it and what processor did it use?
-> I used one back in the Dark Ages ( c. 1980 ).
-
-the pascal microengine was from western digital.  
-
-"The WD/9000 processor is a hardware realization of UCSD's pseudo P-machine.
-The processor is comprised of five LSI/MOS circuits, each contained in
-a 40-pin package.  The individual circuits are:
-
-  o The Data Chip, containing the microinstruction decoder, the arithmetic
-	and logic unit (ALU), and the register file.
-	
-  o The Control Chip, containing the macroinstruction decoder, protions of
-	the control circuitry, the microinstruction counter, and input/output
-	control logic.
-	
-  o Three 22 by 512-bit MICROM chips, containing processor microinstructions."

Just to add a few bits more information -- the same WD processor on a
different board and with different MICROM chips was sold in large volume
as the DEC LSI-11.  Also the 11/2, on yet another board, although by that
time DEC was making their own chips rather than buying them from Western D.

-- 
	carl lowenstein		marine physical lab	u.c. san diego
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