Re: made it to page 4 of gforth tutorial

From	Paul Rubin <no.email@nospam.invalid>
Newsgroups	comp.lang.forth
Subject	Re: made it to page 4 of gforth tutorial
References	(13 earlier) <rsSdnbq4RNunuiTQnZ2dnUVZ7tydnZ2d@supernews.com> <7xiptyz801.fsf@ruckus.brouhaha.com> <B9SdnUNJKpFpAiTQnZ2dnUVZ8q-dnZ2d@supernews.com> <7x62px8ym5.fsf@ruckus.brouhaha.com> <AsidnfjdiZjm9SfQnZ2dnUVZ8umdnZ2d@supernews.com>
Date	2011-04-29 15:09 -0700
Message-ID	<7x7hack8uy.fsf@ruckus.brouhaha.com> (permalink)
Organization	Nightsong/Fort GNOX

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Andrew Haley <andrew29@littlepinkcloud.invalid> writes:
> There's nothing inherently crazy about it: "crazy" has to have a
> context.  In this case, it's crazy precisely because it'll stop the
> compiler from statically allocating locals.  Programming techniques
> have to be appropriate, and we're talking about a machine with 128-256
> bytes of RAM and 4-8k of ROM.  You can attach external memory, but
> it's relatively slow.

I see.  Yeah, my approach to such processors has basically been to plan
on giving up on C altogether (one reason I got interested in Forth, as
mentioned elsewhere).  I now start to understand that it's possible to
use C in a constrained enough way to get that compactness, but it still
seems more like working against C than with it.  It seems to me that one
has to also be careful with data pointers, e.g. setting them to null
when their contents are no longer useful, to help the compiler with
interprocedural dataflow analysis.

It occurs me too that in a small program with no function pointers,
there's probably just a few paths through the call graph to reach any
particular function.  If the function is called from just one place, it
can be inlined there.  If it's called from a few places, it may be
enough to have a few global bits or words saying where the function was
called from (in some cases labelling the entire call path as identified
by static analysis).  Then the function can be "called" with a jump
after setting these bits, and "return" by switching on the bits and
jumping to the appropriate return address.  That allows getting rid of
the return stack in favor of putting the return addresses in code space,
which is more plentiful than data space on these processors (plus taking
a slowdown for the call and return).  It probably makes no sense in
large programs with lots of call paths, but in these small
microcontroller programs, maybe it can be worthwhile in some
circumstances.

I spent a little while with the 8051 manual yesterday and it really is a
pretty neat processor, somewhat more powerful than I expected it to be.
Compared to really tiny controllers like the PIC 10F/12F series, it's
almost a supercomputer ;-).

Thread

made it to page 4 of gforth tutorial gavino <gavcomedy@gmail.com> - 2011-04-17 00:34 -0700
  Re: made it to page 4 of gforth tutorial "The Beez'" <hansoft@bigfoot.com> - 2011-04-17 02:29 -0700
  Re: made it to page 4 of gforth tutorial alberto pasquale <alberto@hal-pc.org> - 2011-04-18 12:55 -0700
    Re: made it to page 4 of gforth tutorial "The Beez'" <hansoft@bigfoot.com> - 2011-04-18 14:45 -0700
      Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-19 09:06 +0000
    Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-18 20:30 -0700
    Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-18 20:33 -0700
    Re: made it to page 4 of gforth tutorial David Kuehling <dvdkhlng@gmx.de> - 2011-04-19 13:04 +0200
      Re: made it to page 4 of gforth tutorial mhx@iae.nl (Marcel Hendrix) - 2011-04-19 22:09 +0200
        Re: made it to page 4 of gforth tutorial "The Beez'" <hansoft@bigfoot.com> - 2011-04-19 23:40 -0700
          Re: made it to page 4 of gforth tutorial mhx@iae.nl (Marcel Hendrix) - 2011-04-20 21:27 +0200
            Re: made it to page 4 of gforth tutorial alberto pasquale <alberto@hal-pc.org> - 2011-04-20 14:56 -0700
              Re: made it to page 4 of gforth tutorial stephenXXX@mpeforth.com (Stephen Pelc) - 2011-04-20 22:42 +0000
              Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-20 22:26 -0700
              Re: made it to page 4 of gforth tutorial mhx@iae.nl (Marcel Hendrix) - 2011-04-21 20:51 +0200
              Re: made it to page 4 of gforth tutorial Marc Olschok <nobody@nowhere.invalid> - 2011-04-26 16:40 +0000
                Re: made it to page 4 of gforth tutorial Bernd Paysan <bernd.paysan@gmx.de> - 2011-04-26 22:23 +0200
                Re: made it to page 4 of gforth tutorial Alex McDonald <blog@rivadpm.com> - 2011-04-26 13:34 -0700
                Re: made it to page 4 of gforth tutorial anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-04-27 14:48 +0000
            Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-21 04:07 -0500
              Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-21 07:38 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-21 08:10 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-22 12:35 +0000
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-22 08:51 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-23 10:17 +0000
                Re: made it to page 4 of gforth tutorial gavino <gavcomedy@gmail.com> - 2011-04-23 18:05 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-21 11:16 -0500
                Re: made it to page 4 of gforth tutorial anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-04-23 11:26 +0000
                Re: made it to page 4 of gforth tutorial gavino <gavcomedy@gmail.com> - 2011-04-23 18:07 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-24 00:10 -0700
              Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-21 11:38 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-21 15:13 -0500
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-21 14:07 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-21 15:05 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-21 15:24 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-22 12:48 +0000
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-22 10:51 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-21 17:41 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-21 18:16 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-21 18:58 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-21 19:49 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-22 00:02 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-22 06:59 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-23 01:20 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-21 21:11 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-22 00:16 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-22 10:12 -0700
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-04-23 07:38 +0100
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-25 00:05 -0700
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-04-25 13:34 +0100
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-25 08:50 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-25 23:11 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-22 00:18 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-22 10:19 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-25 10:43 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-25 13:17 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-25 16:32 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-25 18:21 -0700
                Re: made it to page 4 of gforth tutorial Charles G Montgomery <cgm@physics.utoledo.edu> - 2011-04-26 19:36 -0400
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-26 21:05 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-26 23:36 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-27 08:57 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-28 11:53 +0000
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-29 22:21 -0700
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-04-27 17:41 +0100
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-27 09:53 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-26 11:39 +0000
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-25 23:22 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-26 17:51 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-23 10:33 +0000
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-25 00:48 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-29 22:24 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-22 09:44 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-22 11:36 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-22 17:08 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-23 18:11 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-23 00:49 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-23 03:55 -0500
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-23 14:47 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-23 11:12 -0700
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-04-30 16:33 +0100
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-05-01 23:03 -0700
                Re: made it to page 4 of gforth tutorial Bernd Paysan <bernd.paysan@gmx.de> - 2011-05-02 22:15 +0200
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-05-02 19:15 -0700
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-05-04 08:14 +0100
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-05-04 00:51 -0700
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-05-04 22:03 +0100
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-30 03:15 -0500
                Re: made it to page 4 of gforth tutorial Elizabeth D Rather <erather@forth.com> - 2011-05-01 19:04 -1000
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-27 22:58 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-28 03:37 -0500
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-28 08:54 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-28 12:12 -0500
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-28 21:34 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-29 02:27 -0500
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-29 15:09 -0700
                Re: made it to page 4 of gforth tutorial Hugh Aguilar <hughaguilar96@yahoo.com> - 2011-05-02 21:47 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-28 10:49 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-28 21:57 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-05-03 13:28 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-28 11:01 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-23 14:02 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-25 07:08 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-26 10:47 -0700
                Re: made it to page 4 of gforth tutorial Alex McDonald <blog@rivadpm.com> - 2011-04-26 10:58 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-04-27 22:39 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-28 10:43 -0700
                Re: made it to page 4 of gforth tutorial David Thompson <dave.thompson2@verizon.net> - 2011-05-05 04:39 -0400
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-05-05 04:10 -0500
                Re: made it to page 4 of gforth tutorial stephenXXX@mpeforth.com (Stephen Pelc) - 2011-04-23 09:53 +0000
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-04-23 14:59 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-23 16:10 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-05-01 23:47 -0700
                Re: made it to page 4 of gforth tutorial John Passaniti <john.passaniti@gmail.com> - 2011-05-03 14:23 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-05-04 01:48 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-05-04 05:23 -0500
                Re: made it to page 4 of gforth tutorial John Passaniti <jpassaniti@ashly.com> - 2011-05-04 11:17 -0700
                Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-05-04 12:03 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-23 23:59 -0700
                Re: made it to page 4 of gforth tutorial Paul Rubin <no.email@nospam.invalid> - 2011-05-01 23:48 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-22 03:22 -0500
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-22 10:28 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-22 12:37 -0500
                Re: made it to page 4 of gforth tutorial David Kuehling <dvdkhlng@gmx.de> - 2011-04-22 20:07 +0200
                Re: made it to page 4 of gforth tutorial anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-04-22 18:55 +0000
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-23 23:25 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-24 03:27 -0500
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-24 20:20 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-25 03:24 -0500
                Re: made it to page 4 of gforth tutorial Elizabeth D Rather <erather@forth.com> - 2011-04-25 11:55 -1000
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-25 23:45 -0700
                Re: made it to page 4 of gforth tutorial Elizabeth D Rather <erather@forth.com> - 2011-04-25 21:49 -1000
                Re: made it to page 4 of gforth tutorial Alex McDonald <blog@rivadpm.com> - 2011-04-26 02:39 -0700
                Re: made it to page 4 of gforth tutorial Hugh Aguilar <hughaguilar96@yahoo.com> - 2011-04-26 03:19 -0700
                Re: made it to page 4 of gforth tutorial anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-04-26 10:01 +0000
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-23 03:43 -0500
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-23 23:53 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-24 20:27 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-25 03:35 -0500
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-26 00:20 -0700
                Re: made it to page 4 of gforth tutorial Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-04-26 04:02 -0500
                Re: made it to page 4 of gforth tutorial Bernd Paysan <bernd.paysan@gmx.de> - 2011-04-26 22:40 +0200
                Re: made it to page 4 of gforth tutorial Alex McDonald <blog@rivadpm.com> - 2011-04-25 14:16 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-25 23:25 -0700
                Re: made it to page 4 of gforth tutorial Alex McDonald <blog@rivadpm.com> - 2011-04-26 02:47 -0700
                Re: made it to page 4 of gforth tutorial anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-04-26 10:22 +0000
                Re: made it to page 4 of gforth tutorial Alex McDonald <blog@rivadpm.com> - 2011-04-26 10:45 -0700
                Re: made it to page 4 of gforth tutorial mhx@iae.nl (Marcel Hendrix) - 2011-04-26 22:19 +0200
                Re: made it to page 4 of gforth tutorial mhx@iae.nl (Marcel Hendrix) - 2011-04-27 21:05 +0200
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-22 11:44 -0700
                Re: made it to page 4 of gforth tutorial Elizabeth D Rather <erather@forth.com> - 2011-04-22 11:46 -1000
                Re: made it to page 4 of gforth tutorial Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2011-04-23 08:02 +0100
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-23 23:46 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-24 01:32 -0700
                Re: made it to page 4 of gforth tutorial Elizabeth D Rather <erather@forth.com> - 2011-04-24 08:36 -1000
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-24 19:43 -0700
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-24 21:07 -0700
                Re: made it to page 4 of gforth tutorial Albert van der Horst <albert@spenarnc.xs4all.nl> - 2011-04-25 11:04 +0000
                Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-25 23:02 -0700
          Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-20 18:17 -0700
        Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-21 15:19 -0700
          Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-21 15:27 -0700
  Re: made it to page 4 of gforth tutorial gavino <gavcomedy@gmail.com> - 2011-04-21 16:54 -0700
    Re: made it to page 4 of gforth tutorial gavino <gavcomedy@gmail.com> - 2011-04-21 17:09 -0700
    Re: made it to page 4 of gforth tutorial foxchip <fox@ultratechnology.com> - 2011-04-21 17:57 -0700
    Re: made it to page 4 of gforth tutorial BruceMcF <agila61@netscape.net> - 2011-04-21 18:33 -0700

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