From: Mark Salisbury <mbs@mc.com>
To: yodaiken@fsmlabs.com, george anzinger <george@mvista.com>
Subject: Re: POSIX 52 53? 54
Date: Fri, 13 Apr 2001 08:46:14 -0400
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these are covered in IEEE P100.13, D9 September 1997 AD212.  it is available
from IEEE for a "nominal" fee.

they are 4 defined subsets of POSIX that are deemed appropriate for real-time
systems.

unfortunately, the sub in subset is a small delta from the full set.

the subsets are:
	PSE51: Minimal Realtime System Profile
	PSE52: Realtime Controller System Profile
	PSE53: Dedicated Realtime System Profile
	PSE54: Multi-purpose Realtime System Profile.

now, PSE51 is already about 90% of POSIX, so I don't really see what is so
minimal about it.  the others require even more.

On Thu, 12 Apr 2001, yodaiken@fsmlabs.com wrote:
> POSIX 1003.13 defines profiles 51-4 where 51 is a single POSIX
> process with multiple threads (RTLinux) and 54 is a full POSIX OS
> with the RT extensions (Linux).
> 
> On Thu, Apr 12, 2001 at 08:15:34PM -0700, george anzinger wrote:
> > Any one know any thing about a POSIX draft 52 or 53 or 54.  I think they
> > are suppose to have something to do with real time.
> > 
> > Where can they be found?  What do they imply for the kernel?
> > 
> > George
> > -
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> -- 
> ---------------------------------------------------------
> Victor Yodaiken 
> Finite State Machine Labs: The RTLinux Company.
>  www.fsmlabs.com  www.rtlinux.com
> 
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