Don't forget VMS mailboxes...  I've used them for inter-process and 
inter-system communication on both VMS and Windows.  A very elegant approach on 
both - although as I remember, somewhat more elegantly implemented on the VAX.

Villy

-----Original Message-----
From: [email protected] [mailto:[email protected]] On 
Behalf Of Alexander Schreiber
Sent: April 21, 2012 01:58
To: Dan Gahlinger
Cc: [email protected]
Subject: Re: [Simh] Alpha simulator performance

On Fri, Apr 20, 2012 at 09:01:11PM -0400, Dan Gahlinger wrote:
> 
> NT is not VMS or a reimplementation of it.

Well, it isn't straight VMS - but definitely based on VMS. I remember being in 
university and working my way through a VMS internals book (out of interest) 
and a short while later going through a lecture about modern OS internals which 
was based on Windows NT (IIRC 3.51 or so). Woah, that certainly was full of dj 
vu moments "wait, this is just like in VMS, but with some of the serial numbers 
filed off".

Given that Cutler was the core architect on both, that isn't exactly 
surprising. Even though some of the later silly ideas (putting the entire GUI 
subsystem into kernel mode to speed up graphics) were not his fault.

Kind regards,
            Alex.
--
"Opportunity is missed by most people because it is dressed in overalls and
 looks like work."                                      -- Thomas A. Edison
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