66 struct	uba_softc {  struct
72 	int	(*uh_errchk)(struct uba_softc *);  argument
73 	void	(*uh_beforescan)(struct uba_softc *);  argument
74 	void	(*uh_afterscan)(struct uba_softc *);  argument
75 	void	(*uh_ubainit)(struct uba_softc *);  argument
76 	void	(*uh_ubapurge)(struct uba_softc *, int);  argument
77 	short	uh_nr;			/* Unibus sequential number */
78 	short	uh_type;		/* Type of bus */
79 	bus_space_tag_t	uh_iot;		/* Tag for this Unibus */
80 	bus_space_handle_t uh_ioh;	/* Handle for I/O space */
81 	bus_dma_tag_t	uh_dmat;
82 	char	*uh_used;		/* I/O addresses used */