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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/*********************************************************************
wozfdc.h
Apple Disk II floppy disk controller
*********************************************************************/
#ifndef MAME_MACHINE_WOZFDC_H
#define MAME_MACHINE_WOZFDC_H
#pragma once
#include "imagedev/floppy.h"
#include "formats/flopimg.h"
#include "machine/74259.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class wozfdc_device:
public device_t
{
public:
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
uint8_t read(offs_t offset);
void write(offs_t offset, uint8_t data);
protected:
// construction/destruction
wozfdc_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;
TIMER_CALLBACK_MEMBER(generic_tick);
TIMER_CALLBACK_MEMBER(delayed_tick);
void control(int offset);
void set_phase(uint8_t data);
uint64_t time_to_cycles(const attotime &tm);
attotime cycles_to_time(uint64_t cycles);
void a3_update_drive_sel();
void lss_start();
void lss_sync();
enum {
MODE_IDLE, MODE_ACTIVE, MODE_DELAY
};
floppy_connector *floppy0, *floppy1, *floppy2, *floppy3;
floppy_image_device *floppy;
required_device<addressable_latch_device> m_phaselatch;
uint64_t cycles;
uint8_t data_reg, address;
attotime write_start_time;
attotime write_buffer[32];
int write_position;
bool write_line_active;
const uint8_t *m_rom_p6;
uint8_t last_6502_write;
bool mode_write, mode_load;
int active;
emu_timer *timer, *delay_timer;
bool external_drive_select;
bool external_io_select;
int drvsel;
int enable1;
};
class diskii_fdc_device : public wozfdc_device
{
public:
diskii_fdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void set_floppies(floppy_connector *f0, floppy_connector *f1);
protected:
virtual void device_reset() override;
};
class appleiii_fdc_device : public wozfdc_device
{
public:
appleiii_fdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void set_floppies_4(floppy_connector *f0, floppy_connector *f1, floppy_connector *f2, floppy_connector *f3);
uint8_t read_c0dx(uint8_t offset);
void write_c0dx(uint8_t offset, uint8_t data);
protected:
virtual void device_reset() override;
private:
void control_dx(int offset);
};
// device type definition
DECLARE_DEVICE_TYPE(DISKII_FDC, diskii_fdc_device)
DECLARE_DEVICE_TYPE(APPLEIII_FDC, appleiii_fdc_device)
#endif // MAME_MACHINE_WOZFDC_H
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