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// license:BSD-3-Clause
// copyright-holders:R. Belmont
/*********************************************************************
corvfdc02.h
Implemention of the Corvus Systems CORVUS02 floppy controller
*********************************************************************/
#ifndef __A2BUS_CORVFDC02__
#define __A2BUS_CORVFDC02__
#include "emu.h"
#include "a2bus.h"
#include "machine/upd765.h"
#include "formats/imd_dsk.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class a2bus_corvfdc02_device:
public device_t,
public device_a2bus_card_interface
{
public:
// construction/destruction
a2bus_corvfdc02_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_corvfdc02_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const override;
virtual const rom_entry *device_rom_region() const override;
DECLARE_WRITE_LINE_MEMBER(intrq_w);
DECLARE_WRITE_LINE_MEMBER(drq_w);
DECLARE_FLOPPY_FORMATS(corv_floppy_formats);
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// overrides of standard a2bus slot functions
virtual UINT8 read_c0nx(address_space &space, UINT8 offset) override;
virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data) override;
virtual UINT8 read_cnxx(address_space &space, UINT8 offset) override;
required_device<upd765a_device> m_fdc;
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;
UINT16 m_bufptr;
UINT8 m_buffer[2048]; // 1x6116 SRAM
floppy_image_device *m_curfloppy;
bool m_in_drq;
emu_timer *m_timer;
};
// device type definition
extern const device_type A2BUS_CORVFDC02;
#endif /* __A2BUS_CORVFDC02__ */
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