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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
/**********************************************************************
PC-style floppy disk controller emulation
**********************************************************************/
#ifndef PC_FDC_H
#define PC_FDC_H
#include "emu.h"
#include "machine/upd765.h"
#define MCFG_PC_FDC_XT_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PC_FDC_XT, 0)
#define MCFG_PC_FDC_AT_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PC_FDC_AT, 0)
#define MCFG_PC_FDC_INTRQ_CALLBACK(_write) \
devcb = &pc_fdc_family_device::set_intrq_wr_callback(*device, DEVCB_##_write);
#define MCFG_PC_FDC_DRQ_CALLBACK(_write) \
devcb = &pc_fdc_family_device::set_drq_wr_callback(*device, DEVCB_##_write);
class pc_fdc_family_device : public pc_fdc_interface {
public:
pc_fdc_family_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);
template<class _Object> static devcb_base &set_intrq_wr_callback(device_t &device, _Object object) { return downcast<pc_fdc_family_device &>(device).intrq_cb.set_callback(object); }
template<class _Object> static devcb_base &set_drq_wr_callback(device_t &device, _Object object) { return downcast<pc_fdc_family_device &>(device).drq_cb.set_callback(object); }
required_device<upd765a_device> fdc;
virtual DECLARE_ADDRESS_MAP(map, 8);
virtual void tc_w(bool state);
virtual UINT8 dma_r();
virtual void dma_w(UINT8 data);
virtual UINT8 do_dir_r();
READ8_MEMBER(dor_r);
WRITE8_MEMBER(dor_w);
READ8_MEMBER(dir_r);
WRITE8_MEMBER(ccr_w);
DECLARE_WRITE_LINE_MEMBER( irq_w );
DECLARE_WRITE_LINE_MEMBER( drq_w );
protected:
virtual void device_start();
virtual void device_reset();
virtual machine_config_constructor device_mconfig_additions() const;
bool irq, drq, fdc_drq, fdc_irq;
devcb_write_line intrq_cb, drq_cb;
UINT8 dor;
floppy_image_device *floppy[4];
void check_irq();
void check_drq();
};
class pc_fdc_xt_device : public pc_fdc_family_device {
public:
pc_fdc_xt_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual DECLARE_ADDRESS_MAP(map, 8);
WRITE8_MEMBER(dor_fifo_w);
};
class pc_fdc_at_device : public pc_fdc_family_device {
public:
pc_fdc_at_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual DECLARE_ADDRESS_MAP(map, 8);
};
extern const device_type PC_FDC_XT;
extern const device_type PC_FDC_AT;
#endif /* PC_FDC_H */
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