// license:BSD-3-Clause
// copyright-holders:LuigiThirty

#include "emu.h"

#include "cpu/z80/z80.h"
#include "machine/z80sio.h"
#include "machine/clock.h"

#include "bus/rs232/rs232.h"
#include "video/tms9928a.h"

#define Z80SIO_TAG          "z80sio"
#define RS232_A_TAG         "rs232a"
#define TMS9918A_TAG		"tms9918a"

class rc2014_state: public driver_device
{
public:
	rc2014_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_z80sio(*this, Z80SIO_TAG)
		, m_rs232(*this, RS232_A_TAG)
	{ }

	void rc2014(machine_config &config);

	void init_rc2014();

private:

	virtual void machine_start() override;

	void io_map(address_map &map);
	void mem_map(address_map &map);

	required_device<cpu_device> m_maincpu;
	required_device<z80sio_device> m_z80sio;
	required_device<rs232_port_device> m_rs232;
};

void rc2014_state::machine_start()
{

};

void rc2014_state::mem_map(address_map &map)
{
	map.unmap_value_high();
	map(0x0000, 0x1fff).rom();
	map(0x8000, 0xffff).ram();
}

void rc2014_state::io_map(address_map &map)
{
	/* I/O devices... */
	map.unmap_value_high();
	map.global_mask(0xff);
	map(0x80, 0x83).rw(Z80SIO_TAG, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w));
	// map(0x98, 0x99).rw(TMS9918A_TAG, FUNC(tms9918a_device::read), FUNC(tms9918a_device::write));
}

void rc2014_state::rc2014(machine_config &config)
{
	/* basic machine hardware */
	Z80(config, m_maincpu, 7.3728_MHz_XTAL / 2);
	m_maincpu->set_addrmap(AS_PROGRAM, &rc2014_state::mem_map);
	m_maincpu->set_addrmap(AS_IO, &rc2014_state::io_map);

	Z80SIO(config, m_z80sio, 7.3728_MHz_XTAL / 2);
	m_z80sio->set_cputag(m_maincpu);
	m_z80sio->out_txda_callback().set(m_rs232, FUNC(rs232_port_device::write_txd));
	m_z80sio->out_rtsa_callback().set(m_rs232, FUNC(rs232_port_device::write_rts));

	clock_device &uart_clock(CLOCK(config, "uart_clock", 7.3728_MHz_XTAL / 2));
	uart_clock.signal_handler().set(m_z80sio, FUNC(z80sio_device::txca_w));
	uart_clock.signal_handler().append(m_z80sio, FUNC(z80sio_device::rxca_w));

	rs232_port_device &rs232a(RS232_PORT(config, RS232_A_TAG, default_rs232_devices, "terminal"));
	rs232a.rxd_handler().set(m_z80sio, FUNC(z80sio_device::rxa_w));
	rs232a.cts_handler().set(m_z80sio, FUNC(z80sio_device::ctsa_w));

	// tms9918a_device &vdp(TMS9918A(config, TMS9918A_TAG, XTAL(10'738'635)));
	// vdp.set_screen("screen");
	// vdp.set_vram_size(0x4000);
	// // vdp.int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
	// SCREEN(config, "screen", SCREEN_TYPE_RASTER);
}

void rc2014_state::init_rc2014()
{

}

INPUT_PORTS_START( rc2014 )

INPUT_PORTS_END

/* ROM definition */
ROM_START( rc2014 )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "rc2014.bin", 0x0000, 0x2000, CRC(dd5b9cd9) SHA1(97c176fcb63674f0592851b7858cb706886b5857))
ROM_END

/*    YEAR  NAME    PARENT  COMPAT  MACHINE  INPUT   CLASS         INIT         COMPANY        FULLNAME         FLAGS */
COMP( 2014, rc2014, 0,      0,      rc2014,  rc2014, rc2014_state, init_rc2014, "RFC2795 Ltd", "RC2014", MACHINE_NO_SOUND_HW)