Field Name          Bits   Default Description
CSQ_MODE            31:28  0x0     Command Stream Queue Mode. Controls whether each
                                   command stream is enabled, and whether it is in push
                                   mode (Programmed I/O), or pull mode (Bus-Master).
                                   Encodings are chosen to be compatible with Rage128.
                                   POSSIBLE VALUES:
                                   00 - Primary Disabled, Indirect Disabled.
                                   01 - Primary PIO, Indirect Disabled.
                                   02 - Primary BM, Indirect Disabled.
                                   03 - Primary PIO, Indirect BM.
                                   04 - Primary BM, Indirect BM.
                                   05 - Primary PIO, Indirect BM.
                                   06 - Primary BM, Indirect BM.
                                   07 - Primary PIO, Indirect BM.
                                   08 - Primary BM, Indirect BM.
                                   15 - Primary PIO, Indirect PIO