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

    corvfdc01.h

    Implemention of the Corvus Systems CORVUS01 floppy controller

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

#ifndef __A2BUS_CORVFDC01__
#define __A2BUS_CORVFDC01__

#include "emu.h"
#include "a2bus.h"
#include "machine/wd_fdc.h"
#include "formats/imd_dsk.h"

//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

class a2bus_corvfdc01_device:
	public device_t,
	public device_a2bus_card_interface
{
public:
	// construction/destruction
	a2bus_corvfdc01_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
	a2bus_corvfdc01_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

	// optional information overrides
	virtual machine_config_constructor device_mconfig_additions() const;
	virtual const rom_entry *device_rom_region() const;

	DECLARE_WRITE_LINE_MEMBER(intrq_w);
	DECLARE_WRITE_LINE_MEMBER(drq_w);

	DECLARE_FLOPPY_FORMATS(corv_floppy_formats);

protected:
	virtual void device_start();
	virtual void device_reset();

	// overrides of standard a2bus slot functions
	virtual UINT8 read_c0nx(address_space &space, UINT8 offset);
	virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data);
	virtual UINT8 read_cnxx(address_space &space, UINT8 offset);

	required_device<fd1793_t> m_wdfdc;
	required_device<floppy_connector> m_con1;
	required_device<floppy_connector> m_con2;
	required_device<floppy_connector> m_con3;
	required_device<floppy_connector> m_con4;

private:
	UINT8 *m_rom;
	UINT8 m_fdc_local_status, m_fdc_local_command;
	floppy_image_device *m_curfloppy;
};

// device type definition
extern const device_type A2BUS_CORVFDC01;

#endif /* __A2BUS_CORVFDC01__ */
