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// license:BSD-3-Clause
// copyright-holders:Sandro Ronco, hap
/******************************************************************************
VEB Mikroelektronik "Karl Marx" Erfurt Chess-Master (aka Schachcomputer CM)
- Chess-Master (G-5003-500) (10*U505 roms)
- Chess-Master (G-5003-501) (2 roms set)
Unlike SC2, the chess engine was not copied from an existing one. It is an
original creation by Rüdiger Worbs and Dieter Schultze. It competed in
Budapest WMCCC 1983 and ended at a low 16th place.
Hardware notes:
- UB880 Z80 @ ~2.5MHz
- 2*Z80 PIO
- 10KB ROM (10*U505D), 2KB RAM (4*U214D)
- chessboard with 64 hall sensors, 64+15 leds, piezo
A newer version had a 4MHz UA880 and 2 ROM chips (8KB + 2KB).
BTANB:
- corner leds flicker sometimes
TODO:
- chessmsta isn't working, needs a redump of u2616. Program differences are
minor so it seems to boot fine if you take 064/065 from chessmst, but will
probably have some problems.
******************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/z80pio.h"
#include "machine/sensorboard.h"
#include "sound/dac.h"
#include "video/pwm.h"
#include "speaker.h"
// internal artwork
#include "chessmst.lh"
namespace {
class chessmst_state : public driver_device
{
public:
chessmst_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_pio(*this, "z80pio%u", 0),
m_board(*this, "board"),
m_led_pwm(*this, "led_pwm"),
m_dac(*this, "dac"),
m_inputs(*this, "IN.%u", 0)
{ }
DECLARE_INPUT_CHANGED_MEMBER(halt_button);
DECLARE_INPUT_CHANGED_MEMBER(reset_button);
void chessmst(machine_config &config);
void chessmsta(machine_config &config);
protected:
virtual void machine_start() override;
private:
required_device<z80_device> m_maincpu;
required_device_array<z80pio_device, 2> m_pio;
required_device<sensorboard_device> m_board;
required_device<pwm_display_device> m_led_pwm;
required_device<dac_bit_interface> m_dac;
required_ioport_array<2> m_inputs;
void chessmst_io(address_map &map);
void chessmst_mem(address_map &map);
void pio1_port_a_w(u8 data);
void pio1_port_b_w(u8 data);
u8 pio2_port_a_r();
void pio2_port_b_w(u8 data);
void update_leds();
u16 m_matrix = 0;
u8 m_led_data[2] = { 0, 0 };
};
void chessmst_state::machine_start()
{
// register for savestates
save_item(NAME(m_matrix));
save_item(NAME(m_led_data));
}
/******************************************************************************
I/O
******************************************************************************/
void chessmst_state::update_leds()
{
m_led_pwm->matrix(m_matrix, m_led_data[0] | m_led_data[1]);
}
void chessmst_state::pio1_port_a_w(u8 data)
{
// d0-d7: led data
m_led_data[0] = ~data;
update_leds();
}
void chessmst_state::pio1_port_b_w(u8 data)
{
// d0,d1: input mux/led select high
m_matrix = (m_matrix & 0xff) | ((data & 0x03) << 8);
// d2,d3: led data 2nd/3rd rows (duplicate)
m_led_data[1] = ~data >> 1 & 6;
update_leds();
// d6: speaker out
m_dac->write(BIT(data, 6));
}
u8 chessmst_state::pio2_port_a_r()
{
u8 data = 0xff;
// read chessboard sensors
for (int i = 0; i < 8; i++)
if (BIT(m_matrix, i))
data &= ~m_board->read_file(i);
// read other buttons
if (m_matrix & 0x100)
data &= m_inputs[0]->read();
return data;
}
void chessmst_state::pio2_port_b_w(u8 data)
{
// d0-d7: input mux/led select
m_matrix = (data & 0xff) | (m_matrix & ~0xff);
update_leds();
}
/******************************************************************************
Address Maps
******************************************************************************/
void chessmst_state::chessmst_mem(address_map &map)
{
map.unmap_value_high();
map.global_mask(0x7fff); // A15 not connected
map(0x0000, 0x27ff).rom();
map(0x3400, 0x3bff).ram();
}
void chessmst_state::chessmst_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0x0f);
//map(0x00, 0x03) read/write to both PIOs, but not used by software
map(0x04, 0x07).rw(m_pio[0], FUNC(z80pio_device::read), FUNC(z80pio_device::write));
map(0x08, 0x0b).rw(m_pio[1], FUNC(z80pio_device::read), FUNC(z80pio_device::write));
}
/******************************************************************************
Input Ports
******************************************************************************/
INPUT_CHANGED_MEMBER(chessmst_state::halt_button)
{
// halt button goes to PIO(0) ASTB pin
m_pio[0]->strobe_a(newval);
reset_button(field, param, oldval, newval);
}
INPUT_CHANGED_MEMBER(chessmst_state::reset_button)
{
// pressing both halt+reset buttons causes a reset
const bool reset = (m_inputs[1]->read() & 0x03) == 0x03;
m_maincpu->set_input_line(INPUT_LINE_RESET, reset ? ASSERT_LINE : CLEAR_LINE);
}
static INPUT_PORTS_START( chessmst )
PORT_START("IN.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Hint / 7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_H)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Random / 6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_R)
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Referee / 5 / King") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_F)
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Self Play / 4 / Queen") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_S)
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Board / 3 / Rook") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_B)
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Color / 2 / Bishop") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_C)
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Level / 1 / Knight") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_L)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("New Game / 0 / Pawn") PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) PORT_CODE(KEYCODE_N)
PORT_START("IN.1")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Halt") PORT_CODE(KEYCODE_F2) PORT_CHANGED_MEMBER(DEVICE_SELF, chessmst_state, halt_button, 0)
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Reset") PORT_CODE(KEYCODE_F1) PORT_CHANGED_MEMBER(DEVICE_SELF, chessmst_state, reset_button, 0)
INPUT_PORTS_END
/******************************************************************************
Machine Configs
******************************************************************************/
static const z80_daisy_config chessmst_daisy_chain[] =
{
{ "z80pio0" },
{ nullptr }
};
void chessmst_state::chessmst(machine_config &config)
{
// basic machine hardware
Z80(config, m_maincpu, 9.8304_MHz_XTAL / 4);
m_maincpu->set_addrmap(AS_PROGRAM, &chessmst_state::chessmst_mem);
m_maincpu->set_addrmap(AS_IO, &chessmst_state::chessmst_io);
m_maincpu->set_daisy_config(chessmst_daisy_chain);
Z80PIO(config, m_pio[0], 9.8304_MHz_XTAL / 4);
m_pio[0]->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
m_pio[0]->out_pa_callback().set(FUNC(chessmst_state::pio1_port_a_w));
m_pio[0]->out_pb_callback().set(FUNC(chessmst_state::pio1_port_b_w));
Z80PIO(config, m_pio[1], 9.8304_MHz_XTAL / 4);
m_pio[1]->in_pa_callback().set(FUNC(chessmst_state::pio2_port_a_r));
m_pio[1]->out_pb_callback().set(FUNC(chessmst_state::pio2_port_b_w));
SENSORBOARD(config, m_board);
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(150));
// video hardware
PWM_DISPLAY(config, m_led_pwm).set_size(10, 8);
config.set_default_layout(layout_chessmst);
// sound hardware
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
}
void chessmst_state::chessmsta(machine_config &config)
{
chessmst(config);
// faster UA880 CPU
const XTAL clk = 8_MHz_XTAL / 2;
m_maincpu->set_clock(clk);
m_pio[0]->set_clock(clk);
m_pio[1]->set_clock(clk);
}
/******************************************************************************
ROM Definitions
******************************************************************************/
ROM_START( chessmst )
ROM_REGION( 0x2800, "maincpu", 0 )
ROM_LOAD("bm056.d208", 0x0000, 0x0400, CRC(2b90e5d3) SHA1(c47445964b2e6cb11bd1f27e395cf980c97af196) ) // U505
ROM_LOAD("bm057.d209", 0x0400, 0x0400, CRC(e666fc56) SHA1(3fa75b82cead81973bea94191a5c35f0acaaa0e6) ) // "
ROM_LOAD("bm058.d210", 0x0800, 0x0400, CRC(6a17fbec) SHA1(019051e93a5114477c50eaa87e1ff01b02eb404d) ) // "
ROM_LOAD("bm059.d211", 0x0c00, 0x0400, CRC(e96e3d07) SHA1(20fab75f206f842231f0414ebc473ce2a7371e7f) ) // "
ROM_LOAD("bm060.d212", 0x1000, 0x0400, CRC(0e31f000) SHA1(daac924b79957a71a4b276bf2cef44badcbe37d3) ) // "
ROM_LOAD("bm061.d213", 0x1400, 0x0400, CRC(69ad896d) SHA1(25d999b59d4cc74bd339032c26889af00e64df60) ) // "
ROM_LOAD("bm062.d214", 0x1800, 0x0400, CRC(c42925fe) SHA1(c42d8d7c30a9b6d91ac994cec0cc2723f41324e9) ) // "
ROM_LOAD("bm063.d215", 0x1c00, 0x0400, CRC(86be4cdb) SHA1(741f984c15c6841e227a8722ba30cf9e6b86d878) ) // "
ROM_LOAD("bm064.d216", 0x2000, 0x0400, CRC(e82f5480) SHA1(38a939158052f5e6484ee3725b86e522541fe4aa) ) // "
ROM_LOAD("bm065.d217", 0x2400, 0x0400, CRC(4ec0e92c) SHA1(0b748231a50777391b04c1778750fbb46c21bee8) ) // "
ROM_END
ROM_START( chessmsta )
ROM_REGION( 0x2800, "maincpu", 0 )
ROM_LOAD("bm001.d204", 0x0000, 0x2000, CRC(6be28876) SHA1(fd7d77b471e7792aef3b2b3f7ff1de4cdafc94c9) ) // U2364D45
ROM_LOAD("bm108.d205", 0x2000, 0x0800, CRC(6e69ace3) SHA1(e099b6b6cc505092f64b8d51ab9c70aa64f58f70) BAD_DUMP ) // U2616D45 - problem with d3
ROM_END
} // anonymous namespace
/******************************************************************************
Drivers
******************************************************************************/
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
CONS( 1984, chessmst, 0, 0, chessmst, chessmst, chessmst_state, empty_init, "VEB Mikroelektronik \"Karl Marx\" Erfurt", "Chess-Master (set 1)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1984, chessmsta, chessmst, 0, chessmsta, chessmst, chessmst_state, empty_init, "VEB Mikroelektronik \"Karl Marx\" Erfurt", "Chess-Master (set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_CLICKABLE_ARTWORK )
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