// 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"
#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 = &downcast<pc_fdc_family_device &>(*device).set_intrq_wr_callback(DEVCB_##_write);
#define MCFG_PC_FDC_DRQ_CALLBACK(_write) \
devcb = &downcast<pc_fdc_family_device &>(*device).set_drq_wr_callback(DEVCB_##_write);
class pc_fdc_family_device : public pc_fdc_interface {
public:
template <class Object> devcb_base &set_intrq_wr_callback(Object &&cb) { return intrq_cb.set_callback(std::forward<Object>(cb)); }
template <class Object> devcb_base &set_drq_wr_callback(Object &&cb) { return drq_cb.set_callback(std::forward<Object>(cb)); }
virtual void map(address_map &map) override;
virtual void tc_w(bool state) override;
virtual uint8_t dma_r() override;
virtual void dma_w(uint8_t data) override;
virtual uint8_t do_dir_r() override;
READ8_MEMBER(dor_r);
WRITE8_MEMBER(dor_w);
READ8_MEMBER(dir_r);
WRITE8_MEMBER(ccr_w);
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:
DECLARE_WRITE_LINE_MEMBER( irq_w );
DECLARE_WRITE_LINE_MEMBER( drq_w );
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;
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_t clock);
virtual void map(address_map &map) override;
};
DECLARE_DEVICE_TYPE(PC_FDC_XT, pc_fdc_xt_device)
DECLARE_DEVICE_TYPE(PC_FDC_AT, pc_fdc_at_device)
#endif // MAME_MACHINE_PC_FDC_H