// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
/**********************************************************************
PC-style floppy disk controller emulation
**********************************************************************/
#ifndef MAME_MACHINE_PC_FDC_H
#define MAME_MACHINE_PC_FDC_H
#pragma once
#include "machine/upd765.h"
class pc_fdc_family_device : public device_t {
public:
auto intrq_wr_callback() { return intrq_cb.bind(); }
auto drq_wr_callback() { return drq_cb.bind(); }
virtual void map(address_map &map) = 0;
void tc_w(bool state);
uint8_t dma_r();
void dma_w(uint8_t data);
uint8_t dor_r();
void dor_w(uint8_t data);
void ccr_w(uint8_t data);
required_device<upd765a_device> fdc;
protected:
pc_fdc_family_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
private:
void irq_w(int state);
void drq_w(int state);
bool irq, drq, fdc_drq, fdc_irq;
devcb_write_line intrq_cb, drq_cb;
uint8_t 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_t clock);
virtual void map(address_map &map) override;
void dor_fifo_w(uint8_t data);
};
DECLARE_DEVICE_TYPE(PC_FDC_XT, pc_fdc_xt_device)
#endif // MAME_MACHINE_PC_FDC_H