// license:BSD-3-Clause
// copyright-holders:Sandro Ronco, hap
// thanks-to:yoyo_chessboard
/**************************************************************************************************
Mephisto Modena
The chess engine is by Frans Morsch, same one as Sphinx Dominator 2.05.
Hold Pawn + Knight buttons at boot for test mode.
**************************************************************************************************/
#include "emu.h"
#include "cpu/m6502/m65c02.h"
#include "machine/clock.h"
#include "machine/nvram.h"
#include "machine/sensorboard.h"
#include "machine/timer.h"
#include "sound/dac.h"
#include "sound/volt_reg.h"
#include "video/pwm.h"
#include "speaker.h"
#include "mephisto_modena.lh"
namespace {
class modena_state : public driver_device
{
public:
modena_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_board(*this, "board")
, m_display(*this, "display")
, m_dac(*this, "dac")
, m_keys(*this, "KEY")
, m_digits(*this, "digit%u", 0U)
{ }
void modena(machine_config &config);
protected:
virtual void machine_start() override;
private:
required_device<cpu_device> m_maincpu;
required_device<sensorboard_device> m_board;
required_device<pwm_display_device> m_display;
required_device<dac_bit_interface> m_dac;
required_ioport m_keys;
output_finder<4> m_digits;
void modena_mem(address_map &map);
u8 input_r();
void digits_w(u8 data);
void io_w(u8 data);
void led_w(u8 data);
void update_display();
u8 m_board_mux = 0xff;
u8 m_digits_idx = 0;
u8 m_io_ctrl = 0;
};
void modena_state::machine_start()
{
m_digits.resolve();
save_item(NAME(m_digits_idx));
save_item(NAME(m_io_ctrl));
}
/******************************************************************************
I/O
******************************************************************************/
void modena_state::update_display()
{
m_display->matrix(m_io_ctrl >> 1 & 7, ~m_board_mux);
}
u8 modena_state::input_r()
{
u8 data = 0;
// read buttons
if (~m_io_ctrl & 1)
data |= m_keys->read();
// read chessboard sensors
for (int i=0; i<8; i++)
if (!BIT(m_board_mux, i))
data |= m_board->read_rank(i);
return data;
}
void modena_state::led_w(u8 data)
{
// d0-d7: chessboard mux, led data
m_board_mux = data;
update_display();
}
void modena_state::io_w(u8 data)
{
// d0: button select
// d1-d3: led select
// d4: lcd polarity
// d6: speaker out
m_io_ctrl = data;
update_display();
m_dac->write(BIT(data, 6));
}
void modena_state::digits_w(u8 data)
{
m_digits[m_digits_idx] = data ^ ((m_io_ctrl & 0x10) ? 0xff : 0x00);
m_digits_idx = (m_digits_idx + 1) & 3;
}
/******************************************************************************
Address Maps
******************************************************************************/
void modena_state::modena_mem(address_map &map)
{
map(0x0000, 0x1fff).ram().share("nvram");
map(0x4000, 0x4000).w(FUNC(modena_state::digits_w));
map(0x5000, 0x5000).w(FUNC(modena_state::led_w));
map(0x6000, 0x6000).w(FUNC(modena_state::io_w));
map(0x7000, 0x7000).r(FUNC(modena_state::input_r));
map(0x7f00, 0x7fff).nopr(); // dummy read on 6502 absolute X page wrap
map(0x8000, 0xffff).rom().region("maincpu", 0);
}
/******************************************************************************
Input Ports
******************************************************************************/
static INPUT_PORTS_START( modena )
PORT_START("KEY")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("BOOK") PORT_CODE(KEYCODE_B)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("INFO") PORT_CODE(KEYCODE_I)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("MEMORY") PORT_CODE(KEYCODE_M)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("POSITION") PORT_CODE(KEYCODE_O)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("LEVEL") PORT_CODE(KEYCODE_L)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("FUNCTION") PORT_CODE(KEYCODE_F)
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_F1) // combine for NEW GAME
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CLEAR") PORT_CODE(KEYCODE_BACKSPACE) PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_F1) // "
INPUT_PORTS_END
/******************************************************************************
Machine Configs
******************************************************************************/
void modena_state::modena(machine_config &config)
{
/* basic machine hardware */
M65C02(config, m_maincpu, 4.194304_MHz_XTAL); // W65C02SP or RP65C02G
m_maincpu->set_addrmap(AS_PROGRAM, &modena_state::modena_mem);
clock_device &nmi_clock(CLOCK(config, "nmi_clock", 4.194304_MHz_XTAL / (1 << 13))); // active for 975us
nmi_clock.signal_handler().set_inputline(m_maincpu, INPUT_LINE_NMI);
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS);
m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess));
m_board->set_delay(attotime::from_msec(150));
m_board->set_nvram_enable(true);
/* video hardware */
PWM_DISPLAY(config, m_display).set_size(3, 8);
config.set_default_layout(layout_mephisto_modena);
/* sound hardware */
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
VOLTAGE_REGULATOR(config, "vref").add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
}
/******************************************************************************
ROM Definitions
******************************************************************************/
ROM_START( modena )
ROM_REGION( 0x8000, "maincpu", 0 )
ROM_LOAD("modena_12aug1992_441d.u3", 0x0000, 0x8000, CRC(dd7b4920) SHA1(4606b9d1f8a30180aabedfc0ed3cca0c96618524) )
ROM_END
ROM_START( modenaa )
ROM_REGION( 0x8000, "maincpu", 0 )
ROM_LOAD("27c256_457f.u3", 0x0000, 0x8000, CRC(2889082c) SHA1(b63f0d856793b4f87471837e2219ce2a42fe18de) )
ROM_END
ROM_START( modenab )
ROM_REGION( 0x8000, "maincpu", 0 )
ROM_LOAD("modena_4929_270192.u3", 0x0000, 0x8000, CRC(99212677) SHA1(f0565e5441fb38df201176d01793c953886b0303) )
ROM_END
} // anonymous namespace
/***************************************************************************
Game driver(s)
***************************************************************************/
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
CONS( 1992, modena, 0, 0, modena, modena, modena_state, empty_init, "Hegener + Glaser", "Mephisto Modena (set 1)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1992, modenaa, modena, 0, modena, modena, modena_state, empty_init, "Hegener + Glaser", "Mephisto Modena (set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1992, modenab, modena, 0, modena, modena, modena_state, empty_init, "Hegener + Glaser", "Mephisto Modena (set 3)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )