MOVS - Move Instruction

The MOVS instruction is used to move data from SI in to the address at DI. This instruction is typically used with a CX counter and either REP or LOOP to repeat the task mutltiple times.

This command has 1 part the Instruction. Unlike LODSB and LODSW it can be used to move data between sements.

Both SI and DI are incremented on each call.

Assembly
Sample Description 16 bit Machine
Code

MOVS AL, BL ; 8 bit version moves BYTES from SI in to DI A4

MOVS AX, BX ; 8 bit version moves BYTES from SI in to DI A5

MOVSB ; 8 bit version moves BYTES from SI in to DI A4

MOVSW ; 16 bit version moves WORDS from SI in to DI A5

Assembly Sample	Description	16 bit Machine Code
MOVS AL, BL	; 8 bit version moves BYTES from SI in to DI	A4
MOVS AX, BX	; 8 bit version moves BYTES from SI in to DI	A5
MOVSB	; 8 bit version moves BYTES from SI in to DI	A4
MOVSW	; 16 bit version moves WORDS from SI in to DI	A5