This implements the Xilinx Microblaze according to the
specification: "MicroBlaze Processor Reference Guide",
Embedded Development Kit EDK 9.1.i (UG081 9/15/2006)
This implements the Xilinx Microblaze according to the
specification: "MicroBlaze Processor Reference Guide",
Embedded Development Kit EDK 6.3.i (UG081 August 24, 2004)