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SYNTAX      DIRECT   [<LABEL>] LAC <dma>[,shift]
            INDIRECT [<LABEL>] LAC {ind}[,<shift>[,<next ARP>]]
OPERANDS    0 . dma . 127; 0 . next ARP . 7; 0 . shift . 15 (default = 0).

EXECUTION   (PC) + 1 . PC
            (dma) * 2 ^ shift . ACC
            If SXM = 1, then (dma) is sign-extended.
            If SXM = 0, then (dma) is not sign-extended.
            Affected by SXM.

DESCRIPTION The contents of the specified data memory address are left-
            shifted and loaded into the accumulator. During shifting, low-
            order bits are zero-filled. High-order bits are sign extended
            if SXM = 1 and zeroed if SXM = 0.

WORDS       1

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

            15 14 13 12 11 10  9  8  7  6  5  4  3  2  1  0
            +-----------------------------------------------+
            |0  1  0  0|   shift   | 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     LAC   DAT6,4      (DP = 8)
            or
            LAC   *,4         If current auxiliary register contains 1030.

                      BEFORE        AFTER

             dm1030       >1   dm1030  >1
            ACC X  >12345678    ACC X >10
                 C                  C