Cpu Design Questions
The role of the instruction cache in a CPU is to store frequently used instructions from the main memory. It helps to improve the overall performance of the CPU by reducing the time taken to fetch instructions from the main memory. When the CPU needs to execute an instruction, it first checks the instruction cache. If the instruction is found in the cache, it is fetched from there, which is faster than fetching it from the main memory. This helps in reducing the latency and improving the execution speed of the CPU.