CLD             Clear Direction Flag                 Flags: O D I T S Z A P C
                                                            - 0 - - - - - - -
CLD

        Logic   DF ← 0                  ; Auto-increment eSI, eDI

    CLD resets the direction flag (DF) to zero. After CLD is executed,
    string operations will increment the index registers that they use
    (SI and/or DI; ESI and/or EDI).

    
    Opcode      Format
    FC          CLD


    Length and timing
    Operands    Bytes   8088    186     286     386     486     Pentium
    -            1       2       2       2       2       2       2   NP