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// license:BSD-3-Clause
// copyright-holders:Curt Coder

#ifndef MAME_INCLUDES_BW12_H
#define MAME_INCLUDES_BW12_H

#include "cpu/z80/z80.h"
#include "machine/ram.h"
#include "formats/bw12_dsk.h"
#include "imagedev/floppy.h"
#include "machine/6821pia.h"
#include "bus/centronics/ctronics.h"
#include "machine/kb3600.h"
#include "machine/pit8253.h"
#include "machine/ram.h"
#include "machine/rescap.h"
#include "machine/timer.h"
#include "machine/upd765.h"
#include "machine/z80dart.h"
#include "video/mc6845.h"
#include "emupal.h"

#define SCREEN_TAG          "screen"
#define Z80_TAG             "ic35"
#define MC6845_TAG          "ic14"
#define UPD765_TAG          "ic45"
#define Z80SIO_TAG          "ic15"
#define PIT8253_TAG         "ic34"
#define PIA6821_TAG         "ic16"
#define AY3600PRO002_TAG    "ic74"
#define CENTRONICS_TAG      "centronics"
#define FLOPPY_TIMER_TAG    "motor_off"
#define RS232_A_TAG         "rs232a"
#define RS232_B_TAG         "rs232b"

#define BW12_VIDEORAM_MASK  0x7ff
#define BW12_CHARROM_MASK   0xfff

class bw12_state : public driver_device
{
public:
	bw12_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, Z80_TAG)
		, m_pia(*this, PIA6821_TAG)
		, m_sio(*this, Z80SIO_TAG)
		, m_fdc(*this, UPD765_TAG)
		, m_kbc(*this, AY3600PRO002_TAG)
		, m_crtc(*this, MC6845_TAG)
		, m_pit(*this, PIT8253_TAG)
		, m_palette(*this, "palette")
		, m_centronics(*this, CENTRONICS_TAG)
		, m_ram(*this, RAM_TAG)
		, m_floppy0(*this, UPD765_TAG ":1:525dd")
		, m_floppy1(*this, UPD765_TAG ":2:525dd")
		, m_floppy_timer(*this, FLOPPY_TIMER_TAG)
		, m_rom(*this, Z80_TAG)
		, m_char_rom(*this, "chargen")
		, m_video_ram(*this, "video_ram")
		, m_modifiers(*this, "MODIFIERS")
		, m_led(*this, "led0")
	{ }

	void bankswitch();
	void write_ls259(int address, int data);

	DECLARE_READ8_MEMBER( ls259_r );
	DECLARE_WRITE8_MEMBER( ls259_w );
	DECLARE_READ8_MEMBER( pia_pa_r );
	DECLARE_WRITE_LINE_MEMBER( pia_cb2_w );
	DECLARE_WRITE_LINE_MEMBER( pit_out2_w );
	DECLARE_READ_LINE_MEMBER( ay3600_shift_r );
	DECLARE_READ_LINE_MEMBER( ay3600_control_r );
	DECLARE_WRITE_LINE_MEMBER( ay3600_data_ready_w );
	MC6845_UPDATE_ROW( crtc_update_row );

	TIMER_DEVICE_CALLBACK_MEMBER(floppy_motor_off_tick);
	DECLARE_WRITE_LINE_MEMBER(pit_out0_w);
	DECLARE_FLOPPY_FORMATS( bw12_floppy_formats );
	DECLARE_FLOPPY_FORMATS( bw14_floppy_formats );

	DECLARE_WRITE_LINE_MEMBER(write_centronics_busy);
	DECLARE_WRITE_LINE_MEMBER(write_centronics_fault);
	DECLARE_WRITE_LINE_MEMBER(write_centronics_perror);

	void common(machine_config &config);
	void bw14(machine_config &config);
	void bw12(machine_config &config);
	void bw12_io(address_map &map);
	void bw12_mem(address_map &map);

protected:
	virtual void machine_start() override;
	virtual void machine_reset() override;

	required_device<cpu_device> m_maincpu;
	required_device<pia6821_device> m_pia;
	required_device<z80sio0_device> m_sio;
	required_device<upd765a_device> m_fdc;
	required_device<ay3600_device> m_kbc;
	required_device<mc6845_device> m_crtc;
	required_device<pit8253_device> m_pit;
	required_device<palette_device> m_palette;
	required_device<centronics_device> m_centronics;
	required_device<ram_device> m_ram;
	required_device<floppy_image_device> m_floppy0;
	required_device<floppy_image_device> m_floppy1;
	required_device<timer_device> m_floppy_timer;
	required_memory_region m_rom;
	required_memory_region m_char_rom;
	required_shared_ptr<uint8_t> m_video_ram;
	required_ioport m_modifiers;
	output_finder<> m_led;

	/* memory state */
	int m_bank;

	/* PIT state */
	int m_pit_out2;

	/* keyboard state */
	int m_key_data[9];
	int m_key_sin;
	int m_key_stb;
	int m_key_shift;

	/* floppy state */
	int m_motor_on;
	int m_motor0;
	int m_motor1;

	int m_centronics_busy;
	int m_centronics_fault;
	int m_centronics_perror;
};

#endif