Instruction Sets

Instruction Sets

​Instruction Sets

• ​set of operations which are decoded in sequence (these operations instruct ALU and CU.)

• also called as ​I.S.A (Instruction Set Architecture)

• a machine language

• provide commands ​to the processor

• ​not the same with program codes (programming)

Poll

What do you think is the CPU standard?

• x86

• x64

• x32

​x86 Architecture

• ​an example of an instruction set

• ​common CPU standard

Poll

What do you think are the components of instructions set?

• opcode & operand

• 1's and 0's

• instruction & set

• bread & butter

​Components of Instructions Set

​Opcode and Operand

Multiple Choice

Informs the CPU what operation needs to be done.

• Opcode

• Operand

Multiple Choice

Data which needs to be acted on or it can refer  to a register in the memory.

• Opcode

• Operand

​Examples of Instructions Set Operations

• ​mnemonics

​

​ADD - add the value of another variable to the value stored in the accumulator

​JMP - Jump to designated RAM address.

​LDA - means replace the value of the variable by the value stored in the accumulator.

​STO - means replace the value of the variable by the value stored in the accumulator.

​OUT - Output information to device, e.g., monitor.

​IN - Input information from a device, e.g., keyboard.

Open Ended

What is the word that you most remembered in this topic?

Open Ended

What word do you want to be explained again?

Open Ended

In your own words, how do you define an instruction set?

Poll

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