[comp.os.xinu] Controller and Memory Management

tkl@cscosl.ncsu.edu (Tim Lowman) (09/15/89)

	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

----------------------------------------------------------------------------
Tim Lowman
(tkl@cscosl.ncsu.edu)
----------------------------------------------------------------------------
========================-------*-------===========================
---) Tim Lowman (--- (tkl@cscosl.ncsu.edu)------------------------
----|   |---------------------------------------------------------
==================================================================