[Coco] OS-9 Pascal P-code Interpreters

[Wayne Campbell]

AFAIK the source from one variant of the language is transportable to
another variant, meaning you can take P-code from the CC and compile it on,
say, an Apple II. However, this does not mean that one implementation has
all of the features of another one, so your CC P-code may have something in
it the Apple II does not understand, or the Apple II may have constructs
the CC P-code does not contain. I have never tried to do it, so I am not
certain about it. I also know that the later PC variants of the language
have huge differences between them, so almost all source compiled in a
different implementation had to be rewritten to accommodate the receiving
implementation.

Hope this helps.
Wayne


On Mon, Aug 24, 2015 at 2:44 PM, John W. Linville <linville at tuxdriver.com>
wrote:

> On Thu, Aug 20, 2015 at 02:49:40PM -0500, Joel Ewy wrote:
> > Hey, does anybody know if the OS-9 Pascal P-code interpreters are
> compatible
> > with other, UCSD-style P-code interpreters, such as the one for the Apple
> > II, CP/M, or the original IBM PC?  For a possible future exhibit of
> classic
> > computers at a local maker space, I would like to try running a P-code
> > program on a variety of vintage platforms, and I'd very much like the
> CoCo
> > to be one of them.
>
> I've had this same question myself -- I think I've even asked it here.
> Alas, I don't recall any meaningful answer.
>
> I reckon that someone needs to do a little ground work, transferring
> files from the Apple II (or other) P-system and trying them out on
> the CoCo.  I suspect that person will also need to create some sort
> of utility to add the "P-code" OS-9 module headers to the programs
> as well.
>
> Hopefully someone is bored enough to try it and let us know! ;-)
>
> John
> --
> John W. Linville                Someday the world will need a hero, and you
> linville at tuxdriver.com                  might be all we have.  Be ready.
>
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-- 
Wayne

The Structure of I-Code
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