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- From: Kay Michael <Michael.Kay@icl.com>
- To: 'KenNorth' <KenNorth@email.msn.com>, xml-dev@lists.xml.org
- Date: Mon, 24 Jul 2000 10:50:40 +0100
> - Ken Bowles' UCSD P-System of the late 1970s used a virtual
> machine and intermediate code called p-code for portability
>
and p-code in turn was quite explicitly designed as an improvement to Martin
Richards' o-code, which was used (in the late 60s) as the target for
compilation of BCPL, more widely known as the forerunner of C.
Designing an intermediate language that is suitable as a target for multiple
high-level languages and that is also suitable for interpretation on any
physical hardware is a more elusive goal. ICL attempted it with a system
called ALICE in the mid-1970s, but unsuccessfully. It might be easier today
now that 8-bit addressing and IEEE 754 arithmetic have become universal.
Mike Kay
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