CP_C0_DATA_IN
cp->cp_ctl0 = CP_C0_DATA_IN | CP_C0_INTERPRET;
datain = ((cp->cp_ctl0 & CP_C0_DATA_IN) != 0);
(ccb->ccb_eata_cp.cp_ctl0 & CP_C0_DATA_IN) != 0 ?
cp->cp_ctl0 |= CP_C0_DATA_IN;