Re: [colorforth] @+

[Charles Shattuck <cshattuck@xxxxxxxxxxxx>]

Hi Ray,

Thanks.  Of course, anyone who wants to link to my site should do it.
I'll try to get some more stuff up there soon.  I'm looking forward to
the update to your site at colorforth.info.

Charley.

On Wed, 2006-02-01 at 19:27 -0600, Ray St. Marie wrote:
> Hi Charley,
> Ray here...
> 
> Nicely done! Can't wait to try your code.
> I just got done reading your site ( thanks for the link, btw --
> updating is going on now and my site will change dramatically, very
> soon) ... and you did a nice job on the html-converter in gforth.
> Can't wait to try that as well.
> 
> Do you mind if I link to your page? I wanna show off your code! :)
> 
> I think you had a good idea, moving from EDX to EBX. The code looks great!
> 
> Ray
> 
> On 2/1/06, Charles Shattuck <cshattuck@xxxxxxxxxxxx> wrote:
> > On Tue, 2006-01-31 at 21:27 -0800, John Drake wrote:
> > >
> > > --- Charles Shattuck <cshattuck@xxxxxxxxxxxx> wrote:
> > >
> > > > I've figured out what was wrong with my @+.  The a
> > > > register (EDX) gets
> > > > clobbered in quite a few places in the kernel,
> > > > including jump and swap.
> > > > I decided to use EBX and call it b instead.
> > >
> > > Hello all,
> > >
> > > I missed this post the first time by so bear with
> > > me. :) I'm just now starting to REALLY understand
> > > ColorForth (working on a game demo now) so I
> > > guess I'm late are realizing this, but it seems
> > > that @+ isn't part of (many) Pentium ColorForth
> > > implementations?  It's on Chuck Moore's website:
> > >
> > > http://www.colorforth.com/forth.html
> > >
> > > But it's not listed in the (unofficial) ColorForth
> > > glossary.
> > >
> > > http://kristopherjohnson.net/cgi-bin/twiki/view/Main/ColorForthWord
> > >
> > > More importantly I needed it for my demo and I
> > > noticed that it's not defined in either version
> > > of ColorForth I'm using these days.  (ColorForth
> > > for Windows and Terry Loveall's qemu implementation).
> > >
> > > Is there an @+ definition I can grab somewhere?
> > > And why is it missing?  (Or am I just missing
> > > something?)  I'm not sure what the point of an
> > > A register is with out @+ and !+.
> > >
> > > Regards,
> > >
> > > John M. Drake
> > >
> > >
> > > __________________________________________________
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> > >
> > I put up a version of @+ using the B (EBX) register instead of Chuck's A
> > (EDX) register at:
> >
> >  http://home.surewest.net/cshattuck/editor_additions_2.html
> >
> > Too many words in the kernel clobber the A register so its value can't
> > be relied upon unless you know exactly what your words, including
> > primitives, are doing.  It might be safer and simpler to use push, pop,
> > swap, and over to let the address ride on one of the stacks in my
> > opinion.  Even if you use the B register, which apparently is unused by
> > the kernel, you need to push and pop its value if you call another word
> > of your own that uses @+.
> >
> > Charley.
> >
> >
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> >
> >
> 
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