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JC               Jump If Carry                       Flags: not altered

JC short-label

          Jump Condition:  Jump if CF = 1

    JC transfers control to short-label if the Carry Flag is set. The
    target of the jump must be within -128 to +127 bytes of the next
    instruction.

  --------------------------------------------------------------------------
   Operands                  Clocks   Transfers  Bytes   Example
   short-label              16 or 4       -        2     JC CARRY_SET
  --------------------------------------------------------------------------

       Note:          JB (Jump if Below), JC, and JNAE (Jump if Not Above
                      or Equal) are all synonyms for the same instruction.

                      Use JNC, Jump if No Carry, to jump if the carry flag
                      is clear.