Re: Interpreters & Intermediate languages

elan@tasha.cheme.cornell.edu (Elan Feingold) writes:
>I'm looking to write a fast emulator for the Z80. I want to use dynamic
>translation.


Partial evaluation technology is probably what you need.


There are research-oriented books (the area is till quite new) but Pagan
has a nice little book illustrating how to turn interpreters written is
Pascal into straight code. His methods are manual, but despite their
simplicity are reasonably good. I can get an exact ref if your library
computer is lacking an index. ;-)


I think (from memory) he cites a stack-language interpreter + stack code
for X ==> Pascal program for X running about an order of mag faster than
the original interpreter + X (as one would usually expect).


Hence to emulate your Z80 first write an interpreter for the Z80 and then
follow Pagan's methods to turn it into a program generator. Thence feed
the prog-gen your Z80 code and get Pascal code for same task; thence
compile into your favourite machine lang via Pascal comp.


-kym
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