RTX-2000 processor PC/AT add-in card (any takers?)

Bill Gunshannon bill.gunshannon at hotmail.com
Mon Apr 10 15:59:40 CDT 2017

On 4/10/2017 4:42 PM, Chuck Guzis via cctalk wrote:
> On 04/10/2017 11:41 AM, Dave via cctalk wrote:
>> I have a Harris RTX-2000 based system control board for a long
>> defunct system.  The board worked when removed more than 20 years ago
>> in the mid 90's.  The RTX-2000 is a stack-based processor designed
>> for running FORTH.  I think it was designed by Phil Koopman based on
>> his graduate work.  The board is a 16-bit ISA board.  It was part of
>> an MRI system that ran a version of MPE forth with a C-to-FORTH
>> compiler (actually a C-like variant) that spits out a 16-bit FORTH
>> variant with some embedded RTX-2000 code.
> That is a bit of a surprise--in my experience it takes very little code
> to support Forth on any processor--that someone would build a dedicated
> chip for it is unusual.
> Were there any microprocessor chips that attempted to mimic the
> Burroughs B5000 series and natively execute Algol of any flavor?

No, but Western Digital implemented the UCSD P-machine in hardware
selling it as the Pascal Microengine.  I always wanted on of those
but I fear few have survived the scrap yard.


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