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From: cetron%utah-cbd@UTAH-CS.ARPA (Ed Cetron)
Newsgroups: mod.computers.vax
Subject: Re:  VMX/RSX in 3.7 to 4.0 conversion
Message-ID: <8605311541.AA01365@utah-cbd.ARPA>
Date: Sat, 31-May-86 11:41:41 EDT
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Posted: Sat May 31 11:41:41 1986
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	Then early VMS   3.x systems had what was known as the Applications
Migration Executive (AME) which would allow RSX programs to run (sort-of) under
VMS.  It was supported by the VMS group and had some real problems.  Around VMS
3.5 or 3.6 (roughly) the AME effort was removed from the VAX group and moved
over to the RSX development team.  The end result was VAX-11 RSX as a layered 
product. 
	The bigger change was a strong commitment by the RSX team to make VAX
RSX much more compatible with RSX-11M/M+, including fuller implementation of
executive functions, PLAS directives,etc. In addition, this allowed 'tracking'
of the standard releases of RSX-11M/M+ and in fact, the newest version of
VAX RSX is very close to the current RSX-11M+ V3.0 .  I found that with few
exceptions, the newer VAX RSX's are pretty close - the clincher is that you
can now do an entire RSX-11M/M+ sysgen under VAX RSX. 
	The only problem that you will encounter is that the taskbuilder
(TKB) for RSX-11M/M+ has changed drastically over the past few releases and
the one from VMS 3.0 is quite likely NOT compatible with current RSX-11M/M+
releases... If you need more information, contact me directly....

	Ed Cetron
	Center for Engineering Design, Univ of Utah
	DECUS RSX SIG Executive Committee

	arpa:	cetron%utah-cbd@utah-cs.arpa