Example:


    (16-bit code segment)
    MOVSW       ; 16-bit addressing MOVS
    NOP         ; 16-bit addressing NOP
    db 67h
    MOVSW       ; 32-bit addressing MOVS
    db 67h
    NOP         ; 32-bit addressing NOP

    (32-bit code segment)
    MOVSD       ; 32-bit addressing MOVS
    NOP         ; 32-bit addressing NOP
    db 67h
    MOVSD       ; 16-bit addressing MOVS
    db 67h
    NOP         ; 16-bit addressing NOP





MUL  Unsigned Multiply 16 & 32-bit versions
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