X-Hacker.org- TMS320C2x DSP - syntax direct [<label>] lts <dma>

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SYNTAX      DIRECT   [<LABEL>] LTS <dma>
            INDIRECT [<LABEL>] LTS {ind}[,<next ARP>]

OPERANDS    0 . dma . 127; 0 . next ARP . 7.

EXECUTION   (PC) + 1 . PC
            (dma) . T register
            (ACC) - (shifted P register) . ACC
            Affects OV; affected by PM and OVM.
            Affects C (TMS320C25).

DESCRIPTION The T register is loaded with the contents of the addressed
            data memory location. The contents of the product register,
            shifted as defined by the contents of the PM status bits, are
            subtracted from the accumulator. The result is left in the
            accumulator.

WORDS       1

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

            15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0
            +-----------------------------------------------+
            |0  1  0  1  1  0  1  1| 1| see indirect fields | INDIRECT
            +-----------------------------------------------+

CYCLES

            +------------------------------------------------+
            |    Cycle Timings for a Single Instruction      |
            |------------------------------------------------|
            | PI/DI | PI/DE | PE/DI | PE/DE  | PR/DI | PR/DE |
            |-------+-------+-------+--------+-------+-------|
      '20   |   1   |  2+d  |  1+p  | 2+d+p  |   -   |   -   |
            |-------+-------+-------+--------+-------+-------|
     'C25   |   1   |  2+d  |  1+p  | 2+d+p  |   1   |  2+d  |
            |------------------------------------------------|
            |    Cycle Timings for a Repeat Instruction      |
            |------------------------------------------------|
      '20   |   n   | 2n+nd |  n+p  | 2n+nd+p|   -   |   -   |
            |-------+-------+-------+--------+-------+-------|
     'C25   |   n   | 1+n+nd|  n+p  |1+n+nd+p|   n   |1+n+nd |
            +------------------------------------------------+



EXAMPLE     LTS   DAT36       (DP = 6, PM = 0)
            or
            LTS   *           If current auxiliary register contains 804.

               BEFORE                    AFTER

            dm804 >62         dm804        >62
                T  >3             T        >62
                P  >F             P         >F
            ACC X  >5          ACC X >FFFFFFF6
                C                  C

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