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X-Hacker.org- TMS320C2x DSP - syntax [<label>] b <pma>[,{ind}[,<next arp>]] http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
SYNTAX      [<LABEL>] B <pma>[,{ind}[,<next ARP>]]

OPERANDS    0 . pma . 65535; 0 . next ARP . 7.

EXECUTION   If test/control (TC) status bit = 0;
            then pma . PC; else (PC) + 2 . PC.
            Modify AR(ARP) and ARP as specified.
            Affected by the TC bit.

DESCRIPTION The current auxiliary register and ARP are modified as
            specified. Control passes to the designated program memory
            address if TC = 0; otherwise,control passes to the next
            instruction. No AR or ARP modification occurs if nothing is
            specified in those fields. Pma can be either a symbolic or
            numeric address. Note that the TC bit is affected by the BIT,
            BITT, CMPR, LST1, NORM, RTC and STC instructions.

WORDS       2

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

CYCLES

            +----------------------------------------------------+
            |       Cycle Timings for a Single Instruction       |
            |----------------------------------------------------|
            |  PI/DI |  PI/DE |  PE/DI |  PE/DE  | PR/DI | PR/DE |
            |-----------------+------------------+-------+-------|
      '20   |2 (br int-to-int)| 2+p (int-to-ext) |   _   |   _   |
            | 2+p (ext-to-int)| 2+2p (ext-to-ext)|       |       |
            |----------------------------------------------------|
      'C25  | True Conditions:                                   |
            |----------------------------------------------------|
            |              Destination on-chip RAM:              |
            |----------------------------------------------------|
            |    2   |   2    |  2+2p  |  2+2p   |   2   |   2   |
            |----------------------------------------------------|
            |              Destination on-chip ROM:              |
            |----------------------------------------------------|
            |    3   |   3    |  3+2p  |  3+2p   |   3   |   3   |
            |----------------------------------------------------|
            |            Destination external memory:            |
            |----------------------------------------------------|
            |   3+p  |  3+p   |  3+3p  |  3+3p   |  3+p  |  3+p  |
            |----------------------------------------------------|
            |  False Condition:                                  |
            |----------------------------------------------------|
            |               Destination anywhere:                |
            |----------------------------------------------------|
            |    2   |    2   |  2+2p  |  2+2p   |   2   |   2   |
            |----------------------------------------------------|
            |       Cycle Timings for a Repeat Instruction       |
            |----------------------------------------------------|
      '20   |       not repeatable               |   -   |   -   |
            |----------------------------------------------------|
     'C25   |                     not repeatable                 |
            +----------------------------------------------------+



EXAMPLE     BBZ   PRG325      If TC = 0, 325 is loaded into the program
                              counter; otherwise, the program counter is
                              incremented by 2.

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