Reduced Instruction Set Computer
lastmod 2025-11-04created 2015-12-156 edits
RISC (Reduced Instruction Set Computer) is one of the approaches to designing microprocessors, which simplifies the hardware structure by reducing the number of CPU instructions, and is used in architectures such as SPARC and MIPS.
Traditional CISC CPUs had a large number of instructions and addressing modes to aid programming. However, based on the fact that only a few of those instructions are actually used, RISC builds its instruction set from only a small number of instructions. As a result, RISC has a simpler structure than CISC. Even complex operations can be performed by combining a small number of instructions.
In addition, the internal instructions that are loaded in software into the ROM inside a CISC-style CPU are implemented in hardware, and a processor register bank and cache are placed in the part where the controller was removed. This reduces the number of times the CPU accesses the relatively slow main memory, improving overall system performance, including pipelining.
Categories
RISC-V
- Easy RISC-V: An interactive introductory tutorial on RISC-V assembly programming | GeekNews
- [Original] Easy RISC-V