Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cwjcc!gatech!ncsuvx!cscosl.ncsu.edu!tkl
From: tkl@cscosl.ncsu.edu (Tim Lowman)
Newsgroups: comp.os.xinu
Subject: Controller and Memory Management
Message-ID: <3959@ncsuvx.ncsu.edu>
Date: 14 Sep 89 20:13:43 GMT
Sender: news@ncsuvx.ncsu.edu
Reply-To: tkl@cscosl.ncsu.edu (Tim Lowman)
Organization: Operating Systems Laboratory (OSL), NCSU, Raleigh NC
Lines: 30


	Several XINU related projects are being worked on here in the
	Operating Systems Lab at North Carolina State University and I was
	wondering if perhaps some other people on the net would have some
	insight on the problems we have.

	First: Our lab contains 3 PDP-11/23's and 3 PDP-11 Micros.  The
	Micros have a disk drive controller (an RQDX2 which controls a
	winchestter hard drive + floppy drives -- this controller is also
	referred to as a UDA50 ).  I was wondering is anyone had/knows/could
	tell us the commands/functions (bit layouts) so we could write our
	own controller drivers and plug them into XINU or if 
	such drivers already exist and if we could "borrow" them.

	Second: Several students in this lab are currently working on adding
	a Memory Management Unit to XINU (running on the same machines).
	Any information/helpful hints would be appreciated.


	Thanks for your time,
	Tim Lowman

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Tim Lowman
(tkl@cscosl.ncsu.edu)
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