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Re: Sorta interesting ... to me at least ... :)

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On Sat, 03 Oct 2015 16:47:58 -0400, Chris Curl <ccurl609@gmail.com> wrote:

> So I wrote this little C++ program to emulate my idea of what I would like
> a Forth VM to be able to do. That initializes itself with about 20 words
> as the basis of my dictionary. I then used that to read and interpret a
> bootstrap file using the 20 base words that filled in the rest of my
> dictionary.
>
> I'm sure this is probably a pretty standard way of implementing a Forth
> system. Yawn ...

I and others haved coded Forth partly or completely in other
languages, such as C.  Most C/C++ implementations use a switch()
statement to select code for the low-level words or "primitives".
I follow the way an interpreted fig-Forth Forth works in assembly.

Lars Brinkhoff has lbForth which works more like an
interpreted Forth too.  The author of it replied to you in
another thread.  I would've thought he'd be interested.

> The fun part of it is that I have now written a set of words to disassemble
> the system in terms of my VM's machine language, and another set of words
> that does a dis-assembly as well, except that this other word set spits
> out x86 assembly code that does the same thing. I can compile that directly
> using MASM32 without having to make any changes
>
> It is not complete yet, but when it is, I'll be stoked.

That's convenient.  Some would prefer NASM though.

IIRC, the old FPC and TCOM Forths by Tom Zimmer for
MS-DOS produced binaries.  Modern Forths do as well.


Rod Pemberton


-- 
Just how many texting and calendar apps does humanity need?
Just how many food articles from neurotic millenials do we need?

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Sorta interesting ... to me at least ... :) Chris Curl <ccurl609@gmail.com> - 2015-10-03 13:47 -0700
  Re: Sorta interesting ... to me at least ... :) Paul Rubin <no.email@nospam.invalid> - 2015-10-03 15:04 -0700
    Re: Sorta interesting ... to me at least ... :) dylan.mcnamee@gmail.com - 2015-10-03 16:19 -0700
    Re: Sorta interesting ... to me at least ... :) Andreas Wagner <andreas.wagner@lowfatcomputing.org> - 2015-10-03 16:53 -0700
      Re: Sorta interesting ... to me at least ... :) Paul Rubin <no.email@nospam.invalid> - 2015-10-04 14:02 -0700
  Re: Sorta interesting ... to me at least ... :) "Elizabeth D. Rather" <erather@forth.com> - 2015-10-03 16:19 -1000
  Re: Sorta interesting ... to me at least ... :) Chris Curl <ccurl609@gmail.com> - 2015-10-04 17:43 -0700
  Re: Sorta interesting ... to me at least ... :) "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-10-07 02:54 -0400
    Re: Sorta interesting ... to me at least ... :) Lars Brinkhoff <lars.spam@nocrew.org> - 2015-10-07 10:43 +0200
    Re: Sorta interesting ... to me at least ... :) Chris Curl <ccurl609@gmail.com> - 2015-10-07 14:05 -0700

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