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Tuesday, July 23, 2024

What is the difference between RISC and CISC architecture

CISC

RISC

Complex in instruction set

Reduced instruction set

Large instruction set

Modest instruction set

Memory access is available to most instructions

Memory access is only to load and store instructions

Has few registers

Has a large number of registers

More addressing modes

limited addressing modes

instructions are encoded at varied length

instructions are encoded at fixed length

Microcode control logic i.e. non-volatile memory holds logic codes that implement the instructions

Control logic is hard wired using logic gates that is more efficient

Examples intel core

Example ARM


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