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SYNTAX      [<LABEL>] LARK <AR>,<constant>

OPERANDS    0 . constant . 255; 0 . next ARP . 7.

EXECUTION   (PC) + 1 . PC
            8-bit constant . auxiliary register AR

DESCRIPTION The 8-bit positive constant is loaded into the designated
            auxiliary register (AR) right-justified and zero-filled (sign
            extension suppressed).

            LARK is useful for loading an initial loop counter value into
            an auxiliary register for use with the BANZ instruction.

WORDS       1

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

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   |        not repeatable          |   -   |   -   |
            |------------------------------------------------|
     'C25   |                 not repeatable                 |
            +------------------------------------------------+



EXAMPLE     LARK  AR0,>15

                     BEFORE             AFTER

                     AR0 >0           AR0 >15