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X-Hacker.org- TMS320C2x DSP - syntax [<label>] adlk <constant>[,<shift>] http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
SYNTAX      [<LABEL>] ADLK <constant>[,<shift>]

OPERANDS    16-bit constant; 0 . shift . 15 (defaults to 0).

EXECUTION   (PC) + 2 . PC
            (ACC) + [constant* 2^(shift)] . ACC
            If SXM = 1, then -32768 . constant . 32767.
            If SXM = 0, then 0 . constant . 65535.
            Affects OV; affected by OVM and SXM.
            Affects C (TMS320C25).

DESCRIPTION The 16-bit immediate value, left-shifted as specified, is
            added to the accumulator. The result replaces the accumulator
            contents. SXM determines whether the constant is treated as
            a signed two's complement number or an unsigned number. The
            shift count is optional and defaults to zero.

WORDS       2

ENCODING    15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0
            +-----------------------------------------------+
            |1  1  0  1|   shift   | 0  0  0  0  0  0  1  0 |
            +-----------------------------------------------+
            +-----------------------------------------------+
            |                16-bit constant                |
            +-----------------------------------------------+

CYCLES

            +------------------------------------------------+
            |    Cycle Timings for a Single Instruction      |
            |------------------------------------------------|
            | PI/DI | PI/DE | PE/DI | PE/DE  | PR/DI | PR/DE |
            |-------+-------+-------+--------+-------+-------|
      '20   |   2   |   2   | 2+2p  | 2+2p   |   -   |   -   |
            |-------+-------+-------+--------+-------+-------|
     'C25   |   2   |   2   | 2+2p  | 2+2p   |   2   |   2   |
            |------------------------------------------------|
            |    Cycle Timings for a Repeat Instruction      |
            |------------------------------------------------|
    '20     |                 not repeatable                 |
    'C25    +------------------------------------------------+


EXAMPLE     ADLK  5,8

                BEFORE            AFTER

          ACC X  >10EF     ACC 0  >15EF
              C                C

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