// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:Berger
/******************************************************************************
CXG Sphinx Dominator, chess computer.
Hardware notes:
- R65C02P4 @ 4MHz
- 32KB ROM, 8KB RAM battery-backed
- Sanyo LC7582, 2 LCD panels (each 4-digit)
- TTL, piezo, 8*8+8 LEDs, button sensors
Sphinx Galaxy is assumed to be on similar hardware.
The chess engine is by Frans Morsch, older versions (before 2.05) were buggy.
It's also used in the newer Mephisto Modena.
TODO:
- artwork
- buttons
******************************************************************************/
#include "emu.h"
#include "cpu/m6502/r65c02.h"
#include "machine/nvram.h"
#include "machine/sensorboard.h"
#include "sound/dac.h"
#include "sound/volt_reg.h"
#include "video/pwm.h"
#include "video/lc7582.h"
#include "speaker.h"
// internal artwork
//#include "cxg_dominator.lh" // clickable
namespace {
class dominator_state : public driver_device
{
public:
dominator_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_lcd(*this, "lcd"),
m_display(*this, "display"),
m_board(*this, "board"),
m_dac(*this, "dac"),
m_inputs(*this, "IN.%u", 0),
m_digits(*this, "digit%u", 0U),
m_dp(*this, "dp%u", 0U)
{ }
// machine drivers
void dominator(machine_config &config);
protected:
virtual void machine_start() override;
private:
// devices/pointers
required_device<cpu_device> m_maincpu;
required_device<lc7582_device> m_lcd;
required_device<pwm_display_device> m_display;
required_device<sensorboard_device> m_board;
required_device<dac_bit_interface> m_dac;
required_ioport_array<2> m_inputs;
output_finder<8> m_digits;
output_finder<2> m_dp;
// address maps
void main_map(address_map &map);
// I/O handlers
DECLARE_WRITE64_MEMBER(lcd_s_w);
DECLARE_WRITE8_MEMBER(control_w);
DECLARE_WRITE8_MEMBER(leds_w);
DECLARE_READ8_MEMBER(input_r);
};
void dominator_state::machine_start()
{
m_digits.resolve();
m_dp.resolve();
}
/******************************************************************************
I/O
******************************************************************************/
// LCD
WRITE64_MEMBER(dominator_state::lcd_s_w)
{
u8 d[4];
// 1st digit: S1-S9, unused middle vertical segments
// 2nd digit: S10-S18, unused bottom-right diagonal segment
// 3rd digit: S21-S27
// 4th digit: S28-S34
d[0] = bitswap<9>(data >> 0 & 0x1ff, 2,7,5,4,3,1,0,8,6) & 0x7f;
d[1] = bitswap<9>(data >> 9 & 0x1ff, 7,6,4,2,0,8,5,3,1) & 0x7f;
d[2] = bitswap<7>(data >> 20 & 0x7f, 3,5,1,0,2,6,4);
d[3] = bitswap<7>(data >> 27 & 0x7f, 4,2,0,6,5,3,1);
for (int i = 0; i < 4; i++)
m_digits[offset * 4 + i] = d[i];
// colon: S17 (part of 2nd digit)
m_dp[offset] = BIT(data, 16);
}
// TTL
WRITE8_MEMBER(dominator_state::control_w)
{
// d0: LC7582 DATA
// d1: LC7582 CLK
// d2: LC7582 CE
m_lcd->data_w(BIT(data, 0));
m_lcd->clk_w(BIT(data, 1));
m_lcd->ce_w(BIT(data, 2));
// d3: speaker out
m_dac->write(BIT(data, 3));
}
WRITE8_MEMBER(dominator_state::leds_w)
{
// led data
m_display->matrix(1 << offset, data);
}
READ8_MEMBER(dominator_state::input_r)
{
u8 data = 0;
// read chessboard sensors
if (offset < 8)
data = m_board->read_rank(offset);
// read other buttons
else if (offset < 10)
data = m_inputs[offset - 8]->read();
return ~data;
}
/******************************************************************************
Address Maps
******************************************************************************/
void dominator_state::main_map(address_map &map)
{
map(0x0000, 0x1fff).ram(); //.share("nvram");
map(0x4000, 0x400f).rw(FUNC(dominator_state::input_r), FUNC(dominator_state::leds_w));
map(0x4010, 0x4010).w(FUNC(dominator_state::control_w));
//map(0x7f00, 0x7fff).nopr(); // mid-opcode dummy read
map(0x8000, 0xffff).rom();
}
/******************************************************************************
Input Ports
******************************************************************************/
static INPUT_PORTS_START( dominator )
PORT_START("IN.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6)
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_7)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8)
PORT_START("IN.1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Q)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_W)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Y)
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_U)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I)
INPUT_PORTS_END
/******************************************************************************
Machine Drivers
******************************************************************************/
void dominator_state::dominator(machine_config &config)
{
/* basic machine hardware */
R65C02(config, m_maincpu, 4_MHz_XTAL);
m_maincpu->set_addrmap(AS_PROGRAM, &dominator_state::main_map);
const attotime irq_period = attotime::from_hz(4_MHz_XTAL / 0x2000); // from 4020
m_maincpu->set_periodic_int(FUNC(dominator_state::nmi_line_pulse), irq_period);
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));
/* video hardware */
LC7582(config, m_lcd, 0);
m_lcd->write_segs().set(FUNC(dominator_state::lcd_s_w));
PWM_DISPLAY(config, m_display).set_size(10, 8);
//config.set_default_layout(layout_cxg_dominator);
/* 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( sdtor )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("22p_2.05", 0x8000, 0x8000, CRC(9707119c) SHA1(d7cde835a37bd5d9ff349a871c890ea4cd9b2c26) )
ROM_END
} // anonymous namespace
/******************************************************************************
Drivers
******************************************************************************/
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS */
CONS( 1989, sdtor, 0, 0, dominator, dominator, dominator_state, empty_init, "CXG", "Sphinx Dominator (v2.05)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_NOT_WORKING )