MOV - Move Instruction

The Move instruction moves values from and to Registers and memory addresses.

This command has 3 parts, Instruction, Register, then either a Register, Immediate value or a memory address.

Assembly
Sample Description 16 bit Machine
Code

MOV AL, 0x03 ; Move an immediate 8 bit number to an
; 8 bit Register B8 03

MOV AX, 0x07D4 ; Move an immediate 16 bit number to a
; 16 bit Register B8 D4 07

MOV AL, AH ; Move 8 bit Register to 8 bit Register 8A C4

MOV AX, CX ; Move 16 bit Register to 16 bit Register 8B C1

MOV AX, ES ; Move 16 bit Register to a 16 bit
; Segment Register 8C C0

MOV ES, AX ; Move 16 bit Segment Register to a
; 16 bit Register 8E C0

MOV BX, 0x0020 ; Assign a memory address to BX BB 20 00

MOV [BX], 0x07D4 ; Move an immediate value to a
; memory address C7 07 D4 07

MOV [BX], AX ; Move a 16 bit Register to a memory address 89 07

MOV AX, [BX] ; Move a memory address to a 16 bit Register 8B 07

Assembly Sample	Description	16 bit Machine Code
MOV AL, 0x03	; Move an immediate 8 bit number to an ; 8 bit Register	B8 03
MOV AX, 0x07D4	; Move an immediate 16 bit number to a ; 16 bit Register	B8 D4 07
MOV AL, AH	; Move 8 bit Register to 8 bit Register	8A C4
MOV AX, CX	; Move 16 bit Register to 16 bit Register	8B C1
MOV AX, ES	; Move 16 bit Register to a 16 bit ; Segment Register	8C C0
MOV ES, AX	; Move 16 bit Segment Register to a ; 16 bit Register	8E C0
MOV BX, 0x0020	; Assign a memory address to BX	BB 20 00
MOV [BX], 0x07D4	; Move an immediate value to a ; memory address	C7 07 D4 07
MOV [BX], AX	; Move a 16 bit Register to a memory address	89 07
MOV AX, [BX]	; Move a memory address to a 16 bit Register	8B 07