探讨RISC32处理器设计中三个关键问题包括多媒体指令集扩展设计、流水线微结构优化设计以及使RISC32成为一个真正IP核的其他相关设计问题-explore RISC32 processor design three key issues, including the expansion of multimedia instruction set design, pipelined micro-structural optimization design and make RISC32 beco