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SYNTAX      [<LABEL>] SOVM

OPERANDS    None

EXECUTION   (PC) + 1 . PC
            1 . overflow mode (OVM) status bit
            Affects OVM.

DESCRIPTION The OVM status bit is reset to logic one, which enables the
            overflow (saturation) mode. If an overflow occurs with OVM
            set, the overflow flag OV is set, and the accumulator is set
            to the largest representable 32-bit positive (>7FFFFFFF) or
            negative (>80000000) number according to the direction of
            overflow.

            OVM may also be loaded by the LST and ROVM 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  0  0  1  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     SOVM              The overflow mode bit OVM is set,
                              enabling the overflow mode on any
                              subsequent arithmetic operations.