Xref: utzoo comp.sys.dec:503 comp.org.decus:218
Path: utzoo!mnetor!uunet!husc6!hao!boulder!cu-den!udenva!news
From: news@udenva.cair.du.edu (netnews)
Newsgroups: comp.sys.dec,comp.org.decus
Subject: RSX questions
Message-ID: <9768@udenva.cair.du.edu>
Date: 6 Feb 88 00:00:05 GMT
Distribution: na
Organization: Univ. of Denver, CO, USA
Lines: 46
Keywords: RSX, C, multiprocessors

I have three questions about RSX:

	1> Who, if anyone, has a C compiler for RSX besides DECUS and
Whitesmith? At the last DECUS symp. I attended (Nashville), I heard
that DEC was working on a PDP-11 C, that was due in about a year. Has
anyone heard more about it? (oops, VAX question - Is there a C++ compiler
for VMS that is worth using?) We use both DECUS and Whitesmith versions,
and while we like the DECUS version better, we really don't have the time
to add all the needed support routines. 

	2> MDB/Lockheed have an RSX (co-?)multiprocessor board that runs
in the backplane of a MVII. Apparently it has local on-board memory and
maps into part of the MVII's memory. Several can be in one system. What
we would like to know is:
		a> Besides the processor, memory, boot code and glue, what
is on the board? Serial, parallel ports, A/D channels?

		b> How are devices on the Q-bus used? Do all Q-bus transfers
to disks, a/d boards, etc. go through the MVII?

		c> Are any mechanisms supplied to control access to shared
memory? Do all RSX boards map to the same shared memory locations?

		d> How are bootable images stored/loaded? Can each board
have a different system image?

		e> The information I saw implied that you could run 
parallelized F77 programs. Are there special compilers for this or must
you roll your own using carefully designed cotasks on each machine?
	3> Is there interest in adding a newsgroup to the net for PDP
users? We PDP fans are a loyal, fanatical group, but we need to band to-
gether to fend off the VAX invasion. The current DEC oriented newsgroups
are heavily slanted towards the VAX world. Heck there are more PDP 
machines (and probably users too) then there are VAXen. RT, RSX, RSTS, IAS,
Ultrix-11, CTS, Mumps, etc. users let's speak up!


			Richard Neitzel

			Rockwell International
			Computer Aided Manufacturing and Control
			Box 464
			Golden CO 80402		303-966-7203

Real-time defined: RSX usec	VMS today	DOS ????