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path: root/src/mame/drivers/novag_diablo.cpp
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// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:yoyo_chessboard
/******************************************************************************

Novag Diablo 68000 / Novag Scorpio 68000

Hardware notes (Diablo):
- M68000 @ 16MHz, IPL1 256Hz, IPL2 from ACIA IRQ(always high)
- 2*8KB RAM TC5565 battery-backed, 2*32KB hashtable RAM TC55257 3*32KB ROM
- HD44780 LCD controller (16x1)
- R65C51P2 ACIA @ 1.8432MHz, RS232
- magnetic sensors, 8*8 chessboard leds

Scorpio 68000 hardware is very similar, but with chessboard buttons and side leds.

******************************************************************************/

#include "emu.h"
#include "bus/rs232/rs232.h"
#include "cpu/m68000/m68000.h"
#include "machine/sensorboard.h"
#include "machine/mos6551.h"
#include "machine/nvram.h"
#include "machine/timer.h"
#include "sound/beep.h"
#include "video/pwm.h"
#include "video/hd44780.h"

#include "emupal.h"
#include "screen.h"
#include "speaker.h"

// internal artwork
#include "novag_diablo68k.lh" // clickable
#include "novag_scorpio68k.lh" // clickable


namespace {

class diablo_state : public driver_device
{
public:
	diablo_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_irq_on(*this, "irq_on"),
		m_screen(*this, "screen"),
		m_display(*this, "display"),
		m_lcd(*this, "hd44780"),
		m_board(*this, "board"),
		m_acia(*this, "acia"),
		m_rs232(*this, "rs232"),
		m_beeper(*this, "beeper"),
		m_inputs(*this, "IN.%u", 0)
	{ }

	// machine configs
	void diablo68k(machine_config &config);
	void scorpio68k(machine_config &config);

protected:
	virtual void machine_start() override;

private:
	// devices/pointers
	required_device<m68000_base_device> m_maincpu;
	required_device<timer_device> m_irq_on;
	required_device<screen_device> m_screen;
	required_device<pwm_display_device> m_display;
	required_device<hd44780_device> m_lcd;
	required_device<sensorboard_device> m_board;
	required_device<mos6551_device> m_acia;
	required_device<rs232_port_device> m_rs232;
	required_device<beep_device> m_beeper;
	required_ioport_array<8> m_inputs;

	// address maps
	void diablo68k_map(address_map &map);
	void scorpio68k_map(address_map &map);

	// periodic interrupts
	template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_on) { m_maincpu->set_input_line(Line, ASSERT_LINE); }
	template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_off) { m_maincpu->set_input_line(Line, CLEAR_LINE); }

	// I/O handlers
	void update_display();
	DECLARE_WRITE8_MEMBER(control_w);
	DECLARE_WRITE8_MEMBER(lcd_data_w);
	DECLARE_WRITE8_MEMBER(leds_w);
	DECLARE_READ8_MEMBER(input1_r);
	DECLARE_READ8_MEMBER(input2_r);

	HD44780_PIXEL_UPDATE(lcd_pixel_update);
	void lcd_palette(palette_device &palette) const;

	u8 m_inp_mux;
	u8 m_led_data;
	u8 m_led_side;
	u8 m_lcd_control;
	u8 m_lcd_data;
};

void diablo_state::machine_start()
{
	// zerofill
	m_inp_mux = 0;
	m_led_data = 0;
	m_led_side = 0;
	m_lcd_control = 0;
	m_lcd_data = 0;

	// register for savestates
	save_item(NAME(m_inp_mux));
	save_item(NAME(m_led_data));
	save_item(NAME(m_led_side));
	save_item(NAME(m_lcd_control));
	save_item(NAME(m_lcd_data));
}



/******************************************************************************
    I/O
******************************************************************************/

// LCD

void diablo_state::lcd_palette(palette_device &palette) const
{
	palette.set_pen_color(0, rgb_t(138, 146, 148)); // background
	palette.set_pen_color(1, rgb_t(92, 83, 88)); // lcd pixel on
	palette.set_pen_color(2, rgb_t(131, 136, 139)); // lcd pixel off
}

HD44780_PIXEL_UPDATE(diablo_state::lcd_pixel_update)
{
	// char size is 5x8
	if (x > 4 || y > 7)
		return;

	if (line < 2 && pos < 8)
	{
		// internal: (8+8)*1, external: 1*16
		bitmap.pix16(1 + y, 1 + line*8*6 + pos*6 + x) = state ? 1 : 2;
	}
}


// TTL

void diablo_state::update_display()
{
	// update leds (lcd is done separately)
	u8 led_select = 1 << m_inp_mux;
	m_display->matrix(led_select, m_led_side << 8 | m_led_data);
}

WRITE8_MEMBER(diablo_state::control_w)
{
	// d0: HD44780 E
	// d1: HD44780 RS
	if (m_lcd_control & ~data & 1)
		m_lcd->write(m_lcd_control >> 1 & 1, m_lcd_data);
	m_lcd_control = data & 3;

	// d7: enable beeper
	m_beeper->set_state(data >> 7 & 1);

	// d2,d3: side leds(scorpio)
	m_led_side = ~data >> 2 & 3;

	// d4-d6: input mux, led select
	m_inp_mux = data >> 4 & 7;
	update_display();
}

WRITE8_MEMBER(diablo_state::lcd_data_w)
{
	// d0-d7: HD44780 data
	m_lcd_data = data;
}

WRITE8_MEMBER(diablo_state::leds_w)
{
	// d0-d7: chessboard leds
	m_led_data = data;
	update_display();
}

READ8_MEMBER(diablo_state::input1_r)
{
	// d0-d7: multiplexed inputs (chessboard squares)
	return ~m_board->read_rank(m_inp_mux, true);
}

READ8_MEMBER(diablo_state::input2_r)
{
	// d0-d2: multiplexed inputs (side panel)
	// other: ?
	return ~m_inputs[m_inp_mux]->read() & 7;
}



/******************************************************************************
    Address Maps
******************************************************************************/

void diablo_state::diablo68k_map(address_map &map)
{
	map(0x000000, 0x00ffff).rom();
	map(0x200000, 0x20ffff).rom().region("maincpu", 0x10000);
	map(0x280000, 0x28ffff).ram();
	map(0x300000, 0x300007).rw("acia", FUNC(mos6551_device::read), FUNC(mos6551_device::write)).umask16(0xff00);
	map(0x380000, 0x380001).nopr();
	map(0x380000, 0x380000).w(FUNC(diablo_state::leds_w));
	map(0x3a0000, 0x3a0000).w(FUNC(diablo_state::lcd_data_w));
	map(0x3c0000, 0x3c0000).rw(FUNC(diablo_state::input2_r), FUNC(diablo_state::control_w));
	map(0x3e0000, 0x3e0000).r(FUNC(diablo_state::input1_r));
	map(0xff8000, 0xffbfff).ram().share("nvram");
}

void diablo_state::scorpio68k_map(address_map &map)
{
	diablo68k_map(map);
	map(0x380000, 0x380000).w(FUNC(diablo_state::control_w));
	map(0x3c0000, 0x3c0001).nopw();
}



/******************************************************************************
    Input Ports
******************************************************************************/

static INPUT_PORTS_START( diablo68k )
	PORT_START("IN.0")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_A) PORT_NAME("Go")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Q) PORT_NAME("Take Back / Analyze Games")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("->")

	PORT_START("IN.1")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_S) PORT_NAME("Set Level")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_W) PORT_NAME("Flip Display / Time Control")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_NAME("<-")

	PORT_START("IN.2")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_D) PORT_NAME("Hint / Next Best")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_NAME("Priority / Tournament Book / Pawn")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_NAME("Yes/Start / Start of Game")

	PORT_START("IN.3")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_F) PORT_NAME("Trace Forward / AutoPlay")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("Pro-Op / Restore Game / Rook")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_NAME("No/End / End of Game")

	PORT_START("IN.4")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_G) PORT_NAME("Clear Board / Delete Pro-Op")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_NAME("Best Move/Random / Review / Knight")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_NAME("Print Book / Store Game")

	PORT_START("IN.5")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_H) PORT_NAME("Change Color")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Y) PORT_NAME("Sound / Info / Bishop")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_NAME("Print Moves / Print Evaluations")

	PORT_START("IN.6")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_J) PORT_NAME("Verify/Set Up / Pro-Op Book/Both Books")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_U) PORT_NAME("Solve Mate / Infinite / Queen")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_7) PORT_NAME("Print List / Acc. Time")

	PORT_START("IN.7")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_K) PORT_NAME("New Game")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("Player/Player / Gambit Book / King")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_NAME("Print Board / Interface")
INPUT_PORTS_END



/******************************************************************************
    Machine Configs
******************************************************************************/

void diablo_state::diablo68k(machine_config &config)
{
	/* basic machine hardware */
	M68000(config, m_maincpu, 16_MHz_XTAL);
	m_maincpu->disable_interrupt_mixer();
	m_maincpu->set_addrmap(AS_PROGRAM, &diablo_state::diablo68k_map);

	const attotime irq_period = attotime::from_hz(32.768_kHz_XTAL/128); // 256Hz
	TIMER(config, m_irq_on).configure_periodic(FUNC(diablo_state::irq_on<M68K_IRQ_IPL1>), irq_period);
	m_irq_on->set_start_delay(irq_period - attotime::from_nsec(1100)); // active for 1.1us
	TIMER(config, "irq_off").configure_periodic(FUNC(diablo_state::irq_off<M68K_IRQ_IPL1>), irq_period);

	MOS6551(config, m_acia).set_xtal(1.8432_MHz_XTAL);
	m_acia->irq_handler().set_inputline("maincpu", M68K_IRQ_IPL2);
	m_acia->rts_handler().set("acia", FUNC(mos6551_device::write_cts));
	m_acia->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
	m_acia->dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr));

	RS232_PORT(config, m_rs232, default_rs232_devices, nullptr);
	m_rs232->rxd_handler().set("acia", FUNC(mos6551_device::write_rxd));
	m_rs232->dsr_handler().set("acia", FUNC(mos6551_device::write_dsr));

	NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);

	SENSORBOARD(config, m_board).set_type(sensorboard_device::MAGNETS);
	m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess));
	m_board->set_delay(attotime::from_msec(100));

	/* video hardware */
	SCREEN(config, m_screen, SCREEN_TYPE_LCD);
	m_screen->set_refresh_hz(60); // arbitrary
	m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500));
	m_screen->set_size(6*16+1, 10);
	m_screen->set_visarea_full();
	m_screen->set_screen_update("hd44780", FUNC(hd44780_device::screen_update));
	m_screen->set_palette("palette");

	PALETTE(config, "palette", FUNC(diablo_state::lcd_palette), 3);

	HD44780(config, m_lcd, 0);
	m_lcd->set_lcd_size(2, 8);
	m_lcd->set_pixel_update_cb(FUNC(diablo_state::lcd_pixel_update));

	PWM_DISPLAY(config, m_display).set_size(8, 8+2);
	config.set_default_layout(layout_novag_diablo68k);

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
	BEEP(config, m_beeper, 32.768_kHz_XTAL/32); // 1024Hz
	m_beeper->add_route(ALL_OUTPUTS, "mono", 0.25);
}

void diablo_state::scorpio68k(machine_config &config)
{
	diablo68k(config);

	/* basic machine hardware */
	m_maincpu->set_addrmap(AS_PROGRAM, &diablo_state::scorpio68k_map);

	m_board->set_type(sensorboard_device::BUTTONS);
	m_board->set_delay(attotime::from_msec(150));

	config.set_default_layout(layout_novag_scorpio68k);
}



/******************************************************************************
    ROM Definitions
******************************************************************************/

ROM_START( diablo68 )
	ROM_REGION16_BE( 0x20000, "maincpu", ROMREGION_ERASE00 )
	ROM_LOAD16_BYTE("evenurom.bin", 0x00000, 0x8000, CRC(03477746) SHA1(8bffcb159a61e59bfc45411e319aea6501ebe2f9) )
	ROM_LOAD16_BYTE("oddlrom.bin",  0x00001, 0x8000, CRC(e182dbdd) SHA1(24dacbef2173fa737636e4729ff22ec1e6623ca5) )
	ROM_LOAD16_BYTE("book.bin",     0x10000, 0x8000, CRC(553a5c8c) SHA1(ccb5460ff10766a5ca8008ae2cffcff794318108) ) // no odd rom
ROM_END


ROM_START( scorpio68 )
	ROM_REGION16_BE( 0x20000, "maincpu", ROMREGION_ERASE00 )
	ROM_LOAD16_BYTE("s_evn_904.u3", 0x00000, 0x8000, CRC(a8f63245) SHA1(0ffdc6eb8ecad730440b0bfb2620fb00820e1aea) )
	ROM_LOAD16_BYTE("s_odd_c18.u2", 0x00001, 0x8000, CRC(4f033319) SHA1(fce228b1705b7156d4d01ef92b22a875d0f6f321) )
	ROM_LOAD16_BYTE("502.u4",       0x10000, 0x8000, CRC(553a5c8c) SHA1(ccb5460ff10766a5ca8008ae2cffcff794318108) ) // no odd rom
ROM_END

} // anonymous namespace



/******************************************************************************
    Drivers
******************************************************************************/

//    YEAR  NAME       PARENT CMP MACHINE     INPUT       CLASS         INIT        COMPANY, FULLNAME, FLAGS
CONS( 1991, diablo68,  0,      0, diablo68k,  diablo68k,  diablo_state, empty_init, "Novag", "Diablo 68000", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )

CONS( 1991, scorpio68, 0,      0, scorpio68k, diablo68k,  diablo_state, empty_init, "Novag", "Scorpio 68000", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )