2. TEST & AND
TEST is like CMP, it is used for conditional statement, and doesn’t save the answer. AND is logical multiplication.
3. INS & IN
IN is used for data transfer from I/O devices to registers, whereas INS is used for data transfer from I/O devices to segment.
4. MOV & MOVS
MOV is used for register to register addressing, and MOVS is used for segment to segment addressing.
5. LEA & OFFSET
LEA load the address of the register to destination register, and OFFSET is the starting address of the program.