Re: Ideas for a portable Forth

From	stephenXXX@mpeforth.com (Stephen Pelc)
Newsgroups	comp.lang.forth
Subject	Re: Ideas for a portable Forth
Message-ID	<4f19336b.63367153@192.168.0.50> (permalink)
References	(3 earlier) <jf6om9$uq5$1@speranza.aioe.org> <261b0427-52d2-43bf-9ad2-9f64b2f23031@s18g2000vby.googlegroups.com> <jf8mao$us3$1@speranza.aioe.org> <9af39726-2641-4674-98e3-f05bff830204@m4g2000vbc.googlegroups.com> <jfa5rh$j9q$1@speranza.aioe.org>
Date	2012-01-20 09:37 +0000

Show all headers | View raw

On Thu, 19 Jan 2012 17:33:44 -0500, "Rod Pemberton"
<do_not_have@noavailemail.cmm> wrote:

>
>> 32bit Windows, Linux, BSD and so on don't use
>> segment registers in userland; [...]
>
>Ok, a very polite "wtf" are you talking about?!?

Read that as the O/S has set them up for you and you don't need to
read/write them at all. I believe that Alex knows the x86 instruction
set quite well.

When you get round to writing your own code generator, you will find
that measurement is your friend. You will need several x86 CPU
implementations of the same generation to choose optimal opcode
sequences.

Stephen

-- 
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

Back to comp.lang.forth | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Ideas for a portable Forth Brad <hwfwguy@gmail.com> - 2012-01-16 07:26 -0800
  Re: Ideas for a portable Forth Tarkin <tarkin000@gmail.com> - 2012-01-16 10:32 -0800
    Re: Ideas for a portable Forth Brad <hwfwguy@gmail.com> - 2012-01-17 06:44 -0800
      Re: Ideas for a portable Forth "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-01-18 09:34 -0500
        Re: Ideas for a portable Forth Mat <dambere@web.de> - 2012-01-18 12:09 -0800
        Re: Ideas for a portable Forth Alex McDonald <blog@rivadpm.com> - 2012-01-18 14:57 -0800
          Re: Ideas for a portable Forth "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-01-19 03:06 -0500
            Re: Ideas for a portable Forth Alex McDonald <blog@rivadpm.com> - 2012-01-19 03:14 -0800
              Re: Ideas for a portable Forth "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-01-19 17:33 -0500
                Re: Ideas for a portable Forth stephenXXX@mpeforth.com (Stephen Pelc) - 2012-01-20 09:37 +0000
                Re: Ideas for a portable Forth Alex McDonald <blog@rivadpm.com> - 2012-01-20 03:02 -0800
                Re: Ideas for a portable Forth Alex McDonald <blog@rivadpm.com> - 2012-01-20 04:25 -0800
                Re: Ideas for a portable Forth Mat <dambere@web.de> - 2012-01-21 07:42 -0800
                Re: Ideas for a portable Forth "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-01-21 15:48 -0500
                Re: Ideas for a portable Forth Alex McDonald <blog@rivadpm.com> - 2012-01-21 15:01 -0800
                Re: Ideas for a portable Forth "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-01-21 21:14 -0500
  Re: Ideas for a portable Forth Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-01-16 22:42 +0000
  Re: Ideas for a portable Forth "Rod Pemberton" <do_not_have@noavailemail.cmm> - 2012-01-17 07:43 -0500

csiph-web