RISCV 参考文档，The good news is that an open instruction set that adheres closely to the RISC principles has recently debuted, and it is rapidly gaining a following. RISC-V, which was developed originally at UC Berkeley, not only cleans up the quirks of the MIPS instruction set, but it offers a simple, elegant, modern take on what instruction sets should look like in 2017

计算机组成与设计：软硬件接口技术配套资料，测试题答案