6510 Illegal Addressing mode: Direct Indexed Indirect (R-M-W) -- (d),y

 (DCP,ISB,RLA,RRA,SLO,SRE)
 (2 bytes)  (7,8 cycles)

    +---------------+------------------+-----------------------+----------+
    |     Cycle     |   Address Bus    |       Data Bus        |Read/Write|
    +---------------+------------------+-----------------------+----------+
    |           1   |  PBR,PC          | Op Code               |    R     |
    |           2   |  PBR,PC+1        | Direct Offset         |    R     |
    |           3   |  0,D+DO          | Absolute Address Low  |    R     |
    |           4   |  0,D+DO+1        | Absolute Address High |    R     |
    |       (4) 4a  |  DBR,AAH,AAL+YL  | Internal Operation    |    R     |
    |           5   |  DBR,AA+Y        | Data Low              |    R     |
    |           6   |  DBR,AA          | Old Data Low          |    W     |
    |           7   |  DBR,AA          | New Data Low          |    W     |
    +---------------+------------------+-----------------------+----------+
    (4) Add 1 cycle for indexing across page boundaries or write.

    See also: Abbreviations