Re: Any thoughts on ARM FORTH register usage

From	stephenXXX@mpeforth.com (Stephen Pelc)
Newsgroups	comp.lang.forth
Subject	Re: Any thoughts on ARM FORTH register usage
Message-ID	<5003d43e.178012070@192.168.0.50> (permalink)
References	<614b2a42-0df7-48af-92f1-0161e149ba45@googlegroups.com>
Date	2012-07-16 08:50 +0000

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On Sun, 15 Jul 2012 22:01:03 -0700 (PDT), Clyde Phillips
<cwpjr02@gmail.com> wrote:

>Anyone with a more experienced view of the ARM architecture
>and ISA have any feedback on these issues?

>BTW: My primary target is a NXP Cortex M0 (only one privilege
>level ARMv6 32-bit code mode) I2C multi instrument electronics
>test bench controller for hobbyist market (i know it hardly
>exists!)

I would question the desire for DTC. If you use STC a number of
the Forth primitives reduce to a single instruction that can be
inlined.

In terms of register usage, what you can do with the upper
registers is somewhat limited in M0.

MPE has an entry-level version of the ARM/Cortex cross-compiler
for GBP 75.00, approx US$ 120. See 
  http://www.mpeforth.com/xc7.htm
The Stamp edition already supports NXP M0 devices.

-- 
Stephen Pelc, stephenXXX@mpeforth.com
MicroProcessor Engineering Ltd - More Real, Less Time
133 Hill Lane, Southampton SO15 5AF, England
tel: +44 (0)23 8063 1441, fax: +44 (0)23 8033 9691
web: http://www.mpeforth.com - free VFX Forth downloads

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Thread

Any thoughts on ARM FORTH register usage Clyde Phillips <cwpjr02@gmail.com> - 2012-07-15 22:01 -0700
  Re: Any thoughts on ARM FORTH register usage stephenXXX@mpeforth.com (Stephen Pelc) - 2012-07-16 08:50 +0000
  Re: Any thoughts on ARM FORTH register usage "Clyde W. Phillips Jr." <cwpjr02@gmail.com> - 2012-07-19 00:56 -0700
    Re: Any thoughts on ARM FORTH register usage stephenXXX@mpeforth.com (Stephen Pelc) - 2012-07-19 08:56 +0000
  Re: Any thoughts on ARM FORTH register usage "Clyde W. Phillips Jr." <cwpjr02@gmail.com> - 2012-07-19 16:13 -0700
    Re: Any thoughts on ARM FORTH register usage stephenXXX@mpeforth.com (Stephen Pelc) - 2012-07-20 05:38 +0000
      Re: Any thoughts on ARM FORTH register usage "Clyde W. Phillips Jr." <cwpjr02@gmail.com> - 2012-07-23 23:08 -0700
        Re: Any thoughts on ARM FORTH register usage stephenXXX@mpeforth.com (Stephen Pelc) - 2012-07-24 09:05 +0000
          Re: Any thoughts on ARM FORTH register usage "Clyde W. Phillips Jr." <cwpjr02@gmail.com> - 2012-07-24 16:20 -0700
            Re: Any thoughts on ARM FORTH register usage stephenXXX@mpeforth.com (Stephen Pelc) - 2012-07-25 08:01 +0000

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