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/*********************************************************************

	ap2_dsk.h

	Apple II disk images

*********************************************************************/

#ifndef AP2_DISK_H
#define AP2_DISK_H

#include "flopimg.h"


/***************************************************************************

	Constants

***************************************************************************/

#define APPLE2_NIBBLE_SIZE                      416
#define APPLE2_SMALL_NIBBLE_SIZE        374
#define APPLE2_TRACK_COUNT                      35
#define APPLE2_SECTOR_COUNT                     16
#define APPLE2_SECTOR_SIZE                      256



/**************************************************************************/

LEGACY_FLOPPY_OPTIONS_EXTERN(apple2);

// new style code

class a2_16sect_format : public floppy_image_format_t
{
public:
		a2_16sect_format();

		virtual int identify(io_generic *io, UINT32 form_factor);
		virtual bool load(io_generic *io, UINT32 form_factor, floppy_image *image);
		virtual bool save(io_generic *io, floppy_image *image);

		virtual const char *name() const;
		virtual const char *description() const;
		virtual const char *extensions() const;
		virtual bool supports_save() const;

private:
		static const desc_e mac_gcr[];

		UINT8 gb(const UINT8 *buf, int ts, int &pos, int &wrap);
		void update_chk(const UINT8 *data, int size, UINT32 &chk);
};

extern const floppy_format_type FLOPPY_A216S_FORMAT;

#endif /* AP2_DISK_H */