Structure / Function Processor 4

Complex Instruction Set

• CISC

• RISC

Reduced Instruction Set

• CISC

• RISC

fewer instructions in a set

• CISC

• RISC

a larger amount of instructions in a set

• CISC

• RISC

each instruction does less

• CISC

• RISC

each instruction can achieve more

• CISC

• RISC

to add two numbers together

LDA x

ADD y

(requires two instructions)

• CISC

• RISC

to add two numbers together

ADD x , y

(only one instruction needed)

• CISC

• RISC

more instructions needed for a given task

• CISC

• RISC

fewer instructions needed for a given task

• CISC

• RISC