Computer Organization and Architecture2022-232 marksProgram Control, Reduced Instruction Set Computer, Pipelinin
Differentiate between RISC and CISC.
Differentiate between RISC and CISC.
RISC uses a small set of simple, fixed-length instructions, each done in about one clock cycle. CISC uses a large set of complex, variable-length instructions that may take many cycles.
| Point | RISC | CISC |
|---|---|---|
| Instructions | Few, simple | Many, complex |
| Memory access | LOAD and STORE only | Many instructions |
| Registers | Many | Few |
| Control | Hardwired | Microprogrammed |
| Pipelining | Easy | Hard |
| Code size | Larger | Smaller |
| Example | ARM, MIPS | x86 |
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