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Features of RISC
A limited number of instructions are available
An instruction performs a simple task
Complex tasks can only be performed by combining a number of instructions, so a task may take a number of machine cycles.
Each instruction takes 1 cycle
Fewer addressing modes
Fewer instructions
One or more register sets
Features of CISC
Uses complex instructions each of which may take multiple cycles
Many instructions are available
Many addressing modes are available
Instructions have variable format
A task may be completed by a single instruction as instructions are more complex than individual instructions in RISC
Programs run more slowly due to the complicated instructions/ circuit
Increased hardware cost
Many instructions may be redundant
Computing
computing
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