data_in          1498 dev/ic/bha.c   	ccb->data_in = 0;
data_in           200 dev/ic/bhareg.h 			data_in			:1,
data_in           208 dev/ic/bhareg.h 			data_in			:1,
data_in          1353 dev/isa/aha.c  	ccb->data_in = 0;
data_in           105 dev/isa/ahareg.h 	u_char data_in:1;	/* must be 0 */