RVFA课程学习笔记
timeline 1980: start around, RISC-V is the fifth generation of a research project. 2010: RISC-V is the result of an evolving project. 2011: The first version of the RISC-V ISA was released. name the number just after “RV”: XLEN: in the Unprivileged Specification document. represents the width of registers and not the width of the instructions. Not all instruction width are allowed, only multiple of 16 bits wide. for example, the 32 of RV32I....