Re: DDS Support

["Eric N. Wilson" <doulos1@xxxxxxxx>]

> Why can't users (I believe you mean programmers) write their own
> opcodes?  Well, strictly speaking, they can.  Study up on
> procedures in ILE RPG.

Hans I believe he wants to place his very own commands in the operand
position... I personally do not see a whole lot of advantage over using
Eval/Callp ( or the free format especially :-)

> >From what I've spoken with some of the folks on the MI400 list off
> >line, creating a compiler for this box isn't that much of a chore and
> >heck, why not just make the compiler available to those that want to
> >customize their own compiler...yeah, I know it tends to throw standards
in
> >the crapper...maybe..:)
>
> Do you mean that using MI as an intermediate language makes it
> easy to write a compiler for the AS/400?  Then why do we use
> W-Code today in the ILE compilers?  Unlike MI, W-Code is a
> binary data stream, with an instruction set that resembles a
> low-level stack-based machine.  Although MI may be a good
> choice for easy compilers, W-Code is much better for good
> optimizing compilers.  After working with both styles of
> compilers, I can say that I much prefer working with W-Code.
> Although MI is itself a powerful language that matches RPG
> very well, the places where MI semantics differ from RPG
> semantics make the compilation process difficult and the
> resulting generated code inefficient.

Ok Hans any chance we will get a W-Code compiler??? Oh boy I can see it now!
I could write Forth/400 and a version of Pascal that is close to Delphi's!!!
That would be more than fun :-) Since W-Code is based on a simpler virtual
machine concept I would assume that it works a whole lot faster too. I know
I know I could do all this with C/C++ on the 400 but I would have to buy
that myself as I am sure that IBM will not be senseable and start bundling
it in with OS/400. Read News/400 about other's angst about this issue since
SQL stored procedures require the C compiler AAAAAARGGGGGGHHHHH!



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