Re: Public domain Pcode spec/interpreter

bfaust@saratoga.physik.Uni-Osnabrueck.DE (Bernd Faust)
Wed, 21 Sep 1994 14:36:00 GMT

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Re: Public domain Pcode spec/interpreter markl@netcom.com (1994-09-20)
Re: Public domain Pcode spec/interpreter bfaust@saratoga.physik.Uni-Osnabrueck.DE (1994-09-21)
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Newsgroups: comp.compilers
From: bfaust@saratoga.physik.Uni-Osnabrueck.DE (Bernd Faust)
Keywords: code
Organization: Fachbereich Physik, Universitaet Osnabrueck, Germany
References: 94-09-033 94-09-070
Date: Wed, 21 Sep 1994 14:36:00 GMT

>Tim Carver <timc@ibeam.intel.com>, writes that he is looking for a Pcode
>interpreter so that he can freely intermix interpreted code with machine
>code in a target environment, e.g. move to machine code where it's time
>critical.


This is done in the realtime multitasking operation system RTOS-UH, where
there is a so called 'hyperprocessor', which interprets parts of the code
the system-compiler PEARL-UH generates. When you write programs in pure
assembler you can switch between machine code, e.g. 'move.w #3, d0' (68k)
and hyperprocessor commands, which are named 'hypercommands' and written
as V233 or V345 ...


bernd
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