INB
#define INB(r) bus_space_read_1(np->bst, np->bsh, offsetof(struct ncr_reg, r))
#define INB(r) INB_OFF(offsetof(struct sym_reg,r))
#define INB(sc, x) \
#define INB(bktr,offset) bus_space_read_1((bktr)->memt,(bktr)->memh,(offset))