- GHDL
- GTKWave
- VHDL
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David M. Harris and Sarah L. Harris, "Digital Design and Computer Architecture, RISC-V Edition" http://pages.hmc.edu/harris/class/e85/lect23.pdf
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David A. Patterson, John L. Hennessy, “Computer Organization and Design RISC-V Edition: The Hardware Software Interface”, Morgan Kaufmann, 2017.