Thacker's Tiny Computer 3
Turing award winner Charles (Chuck) Thacker has many decades of experience designing computer systems. He designed the Tiny Computer 3 in 2007 as a teaching aid - see the PDF paper. This paper presents the design design in a schematic form which is then implemented using primarily structural Verilog with Xilinx specific buffers and RAM blocks.
To better understand the design I created a Bluespec version - below - together with a Bluespec assembler based on the one for the Cyan processor. Then for 2nd year undergradute teaching purposes I created a SystemVerilog version in collaboration with summer intern, Frankie Robertson.