Fred: An Architecture for a
		      Self-Timed Decoupled Computer

	       William F. Richardson and Erik L. Brunvand

			       UUCS-95-008

		       Computer Science Department
		    3190 Merrill Engineering Building
			   University of Utah
		       Salt Lake City, Utah 84112


			       May 8, 1995



				Abstract
				--------
   Decoupled computer architectures provide an effective means of
   exploiting instruction level parallelism. Self-timed micropipeline
   systems are inherently decoupled due to the elastic nature of the
   basic FIFO structure, and may be ideally suited for constructing
   decoupled computer architectures.  Fred is a self-timed decoupled,
   pipelined computer architecture based on micropipelines. We present
   the architecture of Fred, with specific details on a micropipelined
   implementation that includes support for multiple functional units
   and out-of-order instruction completion due to the self-timed
   decoupling.