MFINDEX = 0x000016f4
IR0_IMAN = 0x00000002
IR0_IMOD = 0x000000a0
IR0_ERSTSZ = 0x00000002
IR0_ERSTBA_LOW = 0xffffb000
IR0_ERSTBA_HIGH = 0x00000000
IR0_ERDP_LOW = 0xffffc2f1
IR0_ERDP_HIGH = 0x00000000
