int  caps_init (void);
void caps_unloadimage (unsigned int drv);
int  caps_loadimage (struct zfile *zf, unsigned int drv, unsigned int *num_tracks);
int  caps_loadtrack (uae_u16 *mfmbuf, uae_u16 *tracktiming, unsigned int drv,
		     unsigned int track, unsigned int *tracklength, int *multirev,
		     unsigned int *gapoffset);
int  caps_loadrevolution (uae_u16 *mfmbuf, unsigned int drv, unsigned int track,
			  unsigned int *tracklength);