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SYNTAX      [<LABEL>] SXF

OPERANDS    None

EXECUTION   (PC) + 1 . PC
            1 . external flag (XF) pin and status bit
            Affects XF.

DESCRIPTION The XF pin and the XF status bit in status register ST1 are
            set to logic one. XF may also be loaded by the LST1 and RXF
            instructions.

WORDS       1

ENCODING    15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0
            +-----------------------------------------------+
            |1  1  0  0  1  1  1  0  0  0  0  0  1  1  0  1 |
            +-----------------------------------------------+

CYCLES

            +------------------------------------------------+
            |    Cycle Timings for a Single Instruction      |
            |------------------------------------------------|
            | PI/DI | PI/DE | PE/DI | PE/DE  | PR/DI | PR/DE |
            |-------+-------+-------+--------+-------+-------|
      '20   |   1   |   1   |  1+p  |  1+p   |   -   |   -   |
            |-------+-------+-------+--------+-------+-------|
     'C25   |   1   |   1   |  1+p  |  1+p   |   1   |   1   |
            |------------------------------------------------|
            |    Cycle Timings for a Repeat Instruction      |
            |------------------------------------------------|
      '20   |   n   |   n   |  n+p  |   n+p  |   -   |   -   |
            |-------+-------+-------+--------+-------+-------|
     'C25   |   n   |   n   |  n+p  |   n+p  |   n   |   n   |
            +------------------------------------------------+



EXAMPLE     SXF               The XF pin and status bit are set to logic
                              one.
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