64-bit detection

From	"Benjamin David Lunt" <zfysz@fysnet.net>
Newsgroups	alt.os.development
Subject	64-bit detection
Date	2015-07-09 16:47 -0700
Organization	Aioe.org NNTP Server
Message-ID	<mnn174$dd$1@speranza.aioe.org> (permalink)

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Hi guys,

Sorry I have been away for a little while.  I have been
trying to follow some of the threads here, but haven't
had much time to read them all.

However, I had a thought a few days ago.  Will my 32-bit
OS run on a 64-bit machine?

Well, after a few tweaks and fixes, yes it does.  As far
as I can tell, it runs as if it was a 32-bit machine.

I haven't looked into 64-bit machines too much, nor at the
moment have any interest in doing so.

However, I am interested in simply detecting the 64-bit
machine and displaying a message stating so.

I thought I would dig out the .pdf's for the 64-bit and
see if there is a flag in the eflags register (while in
32-bit (non-long) mode) that might (inadvertently) indicate
this.

I haven't yet, but thought I would look into this and
was interested in your opinions.

Have you done anything for 64-bit?  Will you?  And if
so, how do you detect if 64-bit is available?

Anyway, just stopped by for a few thoughts.

Thanks,
Ben

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Thread

64-bit detection "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-09 16:47 -0700
  Re: 64-bit detection "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-09 23:41 -0400
    Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-10 08:30 +0100
      Re: 64-bit detection "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-10 05:17 -0400
        Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-10 13:41 +0100
          Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-12 19:04 +0100
            Re: 64-bit detection "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-13 02:30 -0400
              Re: 64-bit detection "Alexei A. Frounze" <alexfrunews@gmail.com> - 2015-07-13 02:07 -0700
                Re: 64-bit detection "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-13 23:10 -0400
                Re: 64-bit detection "Alexei A. Frounze" <alexfrunews@gmail.com> - 2015-07-14 01:23 -0700
              Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-13 12:34 +0100
                Re: 64-bit detection "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-13 22:50 -0400
                Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-14 08:37 +0100
                Re: 64-bit detection "Alexei A. Frounze" <alexfrunews@gmail.com> - 2015-07-14 01:41 -0700
                Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-14 10:04 +0100
      Re: 64-bit detection "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-10 08:44 -0700
      Re: 64-bit detection "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-10 10:52 -0700
    Re: 64-bit detection "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-10 08:38 -0700
      Re: 64-bit detection "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-10 10:58 -0700
  Re: 64-bit detection CN <qmbmnp3799@pacbell.net> - 2015-07-09 23:00 -0700
    Re: 64-bit detection "Benjamin David Lunt" <zfysz@fysnet.net> - 2015-07-10 08:40 -0700
      Re: 64-bit detection "James Harris" <james.harris.1@gmail.com> - 2015-07-10 21:29 +0100

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