extern int *baudparms;

extern void (*buslock)(void);
extern void (*busunlock)(void);
extern void (*buspreempt)(void);
extern unsigned int (*can_peek8)(int adr);
extern void (*can_poke8)(int adr, unsigned int dat);
extern void (*can_peekstream)(int adr, unsigned char *buf, int n);
extern void (*can_pokestream)(int adr, unsigned char *buf, int n);
extern int irq_num;