RTSX_HAIMR_BUSY
arg = RTSX_HAIMR_BUSY | (uint32_t)((addr & 0x3FFF) << 16);
if (!(reg & RTSX_HAIMR_BUSY))
arg = RTSX_HAIMR_BUSY | RTSX_HAIMR_WRITE |
if (!(reg & RTSX_HAIMR_BUSY)) {