WRL Technical Note TN-9
	               Smart Code, Stupid Memory  
	    A Fast X Server for a Dumb Color Frame Memory
			    Joel McCormack
			    September 1989

Processor speeds are improving faster than memory access speeds.  The
current generation of RISC processors can perform many 2-dimensional
graphics operations at memory bandwidth speeds, rendering specialized
hardware unnecessary.  This paper describes the DECStation 3100 color
frame buffer hardware and several of the graphics algorithms used in
the X server implementation.  Measured performance numbers are
presented and compared to memory bandwidth speed, and possible frame
buffer improvements are discussed.