imsic_eix_read
eix->eip[0] = imsic_eix_read(IMSIC_EIP0 + i * 2);
eix->eie[0] = imsic_eix_read(IMSIC_EIE0 + i * 2);
eix->eip[1] = imsic_eix_read(IMSIC_EIP0 + i * 2 + 1);
eix->eie[1] = imsic_eix_read(IMSIC_EIE0 + i * 2 + 1);
idata->val = imsic_eix_read(idata->isel);