Harris RTX-2000 - Re: High performance coprocessor boards of the 80s and 90s

Tapley, Mark mtapley at swri.edu
Thu Apr 21 09:22:21 CDT 2016

On Apr 20, 2016, at 9:46 PM, dwight <dkelvey at hotmail.com> wrote:

> The RTX-2000 was an of shoot of the NC4000. Even at 10MHz, they could
> out compute a 40MHz 80386.
> One execution per clock cycle plus possibly using 3 16 bit busses in a single
> cycle.
> A 4MHz NC4000 could sort 1K 16 bit values in 19.7 milliseconds.
> Dwight
> ….
> On 2016-04-20 1:28 PM, dwight wrote:
>> There was a Harris RTX-2000 based accelerator card around
>> the 80386 time period.
> ...Interestingly: "The RTX 2000 is specifically designed to execute the
> Forth language"
> (https://users.ece.cmu.edu/~koopman/stack_computers/sec4_5.html)
> --Toby

(top-post …. bottom-post …. AAagh!) :-)

The Harris RTX-2010, in a rad-hard version, was for years the CPU of choice for spacecraft science instruments from Johns Hopkins APL. Those chips are *all* *over* the solar system! One of APL's lead SW engineers wrote one of the most widely-used Forth test suites, partly for that reason.

It’s a pretty nice chip, for multiple reasons.
								- Mark

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