extern int askname;
extern struct rpb bootrpb;
extern int csrbase, nexaddr;
#define SADEV(name,strategy,open,close,ioctl) \
{ (char *)name, \
(int(*)(void *, int ,daddr_t , size_t, void *, size_t *))strategy, \
(int(*)(struct open_file *, ...))open, \
(int(*)(struct open_file *))close, \
(int(*)(struct open_file *,u_long, void *))ioctl}
#define SDELAY(count) {volatile int i; for (i = count; i; i--);}
#define min(x,y) (x < y ? x : y)
struct netif_driver;
int net_devinit(struct open_file *f, struct netif_driver *drv, u_char *eaddr);
int ubmap(int mapno, int vaddr, int size);
int raopen(struct open_file *, int, int, int, int),
rastrategy(void *, int, daddr_t, size_t, void *, size_t *),
raclose(struct open_file *);
int hpopen(struct open_file *, int, int, int, int),
hpstrategy(void *, int, daddr_t, size_t, void *, size_t *);
int ctuopen(struct open_file *, int, int, int, int),
ctustrategy(void *, int, daddr_t, size_t, void *, size_t *);
int tmscpopen(struct open_file *, int, int, int, int),
tmscpstrategy(void *, int, daddr_t, size_t, void *, size_t *);
int romopen(struct open_file *, int, int, int, int),
romstrategy(void *, int, daddr_t, size_t, void *, size_t *),
romioctl(struct open_file *, u_long, void *);
int mfmopen(struct open_file *, int, int, int, int),
mfmstrategy(void *, int, daddr_t, size_t, void *, size_t *);
int sdopen(struct open_file *),
sdstrategy(void *, int, daddr_t, size_t, void *, size_t *);
int leopen(struct open_file *, int, int, int, int),
leclose(struct open_file *);
int qeopen(struct open_file *, int, int, int, int),
qeclose(struct open_file *);
int zeopen(struct open_file *, int, int, int, int),
zeclose(struct open_file *);
int deopen(struct open_file *, int, int, int, int),
declose(struct open_file *);
int niopen(struct open_file *, int, int, int, int),
niclose(struct open_file *);
int netopen(struct open_file *), netclose(struct open_file *);