/* EVT_MEM_MODE (values) */
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EVT_MEM_MODE_O    0                                                           
EVT_MEM_MODE_W    3                                                           
DATA_TAKING     0x0     /* normal data path */                                
PLAY_TO_ROUTER  0x1     /* load via rod bus, play EVENT_MEM event to router */
RODBUS_ACCESS   0x2     /* load via rod bus, read via rod bus */              
TRAP_REAL_DATA  0x4     /* play through normal data path, trap in EVENT_MEM */