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// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:yoyo_chessboard, Berger
/******************************************************************************
Fidelity Elegance Chess Challenger (AS12/6085)
Hardware notes:
- R65C02P4 CPU @ 3/3.57/4MHz
- 3*8KB ROM(TMM2764), 2*2KB RAM(HM6116)
- PCB label 510-1084B01
This is on the SC12B board, with enough modifications to support more leds and
magnetic chess board sensors. See fidel_sc12.cpp for a more technical description.
******************************************************************************/
#include "emu.h"
#include "machine/fidel_clockdiv.h"
#include "bus/generic/carts.h"
#include "bus/generic/slot.h"
#include "cpu/m6502/r65c02.h"
#include "machine/clock.h"
#include "machine/sensorboard.h"
#include "sound/dac.h"
#include "video/pwm.h"
#include "softlist_dev.h"
#include "speaker.h"
// internal artwork
#include "fidel_as12.lh" // clickable
namespace {
// note: sub-class of fidel_clockdiv_state (see mame/machine/fidel_clockdiv.*)
class as12_state : public fidel_clockdiv_state
{
public:
as12_state(const machine_config &mconfig, device_type type, const char *tag) :
fidel_clockdiv_state(mconfig, type, tag),
m_board(*this, "board"),
m_display(*this, "display"),
m_dac(*this, "dac"),
m_inputs(*this, "IN.0")
{ }
// machine configs
void feleg(machine_config &config);
void felega(machine_config &config);
DECLARE_INPUT_CHANGED_MEMBER(switch_cpu_freq) { set_cpu_freq(); }
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
void set_cpu_freq();
private:
// devices/pointers
required_device<sensorboard_device> m_board;
required_device<pwm_display_device> m_display;
required_device<dac_bit_interface> m_dac;
required_ioport m_inputs;
// address maps
void main_map(address_map &map);
// I/O handlers
void update_display();
void control_w(u8 data);
void led_w(offs_t offset, u8 data);
u8 input_r(offs_t offset);
u16 m_inp_mux = 0;
u8 m_led_data = 0;
};
void as12_state::machine_start()
{
fidel_clockdiv_state::machine_start();
// register for savestates
save_item(NAME(m_inp_mux));
save_item(NAME(m_led_data));
}
void as12_state::machine_reset()
{
set_cpu_freq();
fidel_clockdiv_state::machine_reset();
}
void as12_state::set_cpu_freq()
{
// known official CPU speeds: 3MHz, 3.57MHz, 4MHz
static const XTAL xtal[3] = { 3_MHz_XTAL, 3.579545_MHz_XTAL, 4_MHz_XTAL };
m_maincpu->set_unscaled_clock(xtal[ioport("FAKE")->read() % 3]);
div_refresh();
}
/******************************************************************************
I/O
******************************************************************************/
void as12_state::update_display()
{
// 8*8(+1) chessboard leds
m_display->matrix(m_inp_mux, m_led_data);
}
void as12_state::control_w(u8 data)
{
// d0-d3: 74245 P0-P3
// 74245 Q0-Q8: input mux, led select
u16 sel = 1 << (data & 0xf) & 0x3ff;
m_inp_mux = bitswap<9>(sel,5,8,7,6,4,3,1,0,2);
update_display();
// 74245 Q9: speaker out
m_dac->write(BIT(sel, 9));
// d4,d5: printer?
// d6,d7: N/C?
}
void as12_state::led_w(offs_t offset, u8 data)
{
// a0-a2,d0: led data via NE591N
m_led_data = (m_led_data & ~(1 << offset)) | ((data & 1) << offset);
update_display();
}
u8 as12_state::input_r(offs_t offset)
{
u8 data = 0;
// a0-a2,d7: multiplexed inputs (active low)
// read chessboard sensors
for (int i = 0; i < 8; i++)
if (BIT(m_inp_mux, i))
data |= m_board->read_file(i);
// read sidepanel buttons
if (m_inp_mux & 0x100)
data |= m_inputs->read();
data = bitswap<8>(data,4,3,2,1,0,5,6,7);
return (data >> offset & 1) ? 0 : 0x80;
}
/******************************************************************************
Address Maps
******************************************************************************/
void as12_state::main_map(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x0fff).ram();
map(0x1800, 0x1807).w(FUNC(as12_state::led_w)).nopr();
map(0x2000, 0x5fff).r("cartslot", FUNC(generic_slot_device::read_rom));
map(0x6000, 0x6000).mirror(0x1fff).w(FUNC(as12_state::control_w));
map(0x8000, 0x9fff).rom();
map(0xa000, 0xa007).mirror(0x1ff8).r(FUNC(as12_state::input_r));
map(0xc000, 0xcfff).mirror(0x1000).rom();
map(0xe000, 0xffff).rom();
}
/******************************************************************************
Input Ports
******************************************************************************/
static INPUT_PORTS_START( feleg )
PORT_INCLUDE( fidel_clockdiv_4 )
PORT_START("IN.0")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("RV / Pawn")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("DM / Knight")
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("TB / Bishop")
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("LV / Rook")
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / King")
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL")
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("RE")
PORT_START("FAKE")
PORT_CONFNAME( 0x03, 0x02, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, as12_state, switch_cpu_freq, 0) // factory set
PORT_CONFSETTING( 0x00, "3MHz" )
PORT_CONFSETTING( 0x01, "3.57MHz" )
PORT_CONFSETTING( 0x02, "4MHz" )
INPUT_PORTS_END
static INPUT_PORTS_START( felega )
PORT_INCLUDE( feleg )
PORT_MODIFY("FAKE") // default to 3.57MHz
PORT_CONFNAME( 0x03, 0x01, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, as12_state, switch_cpu_freq, 0) // factory set
PORT_CONFSETTING( 0x00, "3MHz" )
PORT_CONFSETTING( 0x01, "3.57MHz" )
PORT_CONFSETTING( 0x02, "4MHz" )
INPUT_PORTS_END
/******************************************************************************
Machine Configs
******************************************************************************/
void as12_state::feleg(machine_config &config)
{
/* basic machine hardware */
R65C02(config, m_maincpu, 4_MHz_XTAL); // R65C02P4
m_maincpu->set_addrmap(AS_PROGRAM, &as12_state::main_map);
auto &irq_clock(CLOCK(config, "irq_clock", 600)); // from 556 timer (22nF, 110K, 1K), ideal frequency is 600Hz
irq_clock.set_pulse_width(attotime::from_usec(17)); // active for 17us
irq_clock.signal_handler().set_inputline(m_maincpu, M6502_IRQ_LINE);
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(150));
/* video hardware */
PWM_DISPLAY(config, m_display).set_size(9, 8);
config.set_default_layout(layout_fidel_as12);
/* sound hardware */
SPEAKER(config, "speaker").front_center();
DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
/* cartridge */
GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "fidel_scc");
SOFTWARE_LIST(config, "cart_list").set_original("fidel_scc");
}
void as12_state::felega(machine_config &config)
{
feleg(config);
/* basic machine hardware */
m_maincpu->set_clock(3.579545_MHz_XTAL);
}
/******************************************************************************
ROM Definitions
******************************************************************************/
ROM_START( feleg ) // model 6085
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("feleg.8000", 0x8000, 0x2000, CRC(e9df31e8) SHA1(31c52bb8f75580c82093eb950959c1bc294189a8) ) // TMM2764, no label
ROM_LOAD("feleg.c000", 0xc000, 0x1000, CRC(bed9c84b) SHA1(c12f39765b054d2ad81f747e698715ad4246806d) ) // "
ROM_CONTINUE( 0xc000, 0x1000 ) // 1st half empty
ROM_LOAD("feleg.e000", 0xe000, 0x2000, CRC(b1fb49aa) SHA1(d8c9687dd564f0fa603e6d684effb1d113ac64b4) ) // "
ROM_END
ROM_START( felega ) // model AS12
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("blue.8000", 0x8000, 0x2000, CRC(2e07e657) SHA1(3238f21bdbf2277851e5a32e18c043e654123f00) ) // M5L2764K-2
ROM_LOAD("yellow.c000", 0xc000, 0x1000, CRC(fcc48302) SHA1(f60d34229721e8659e9f81c267177daec7723d8f) ) // TMS2732AJL-45
ROM_LOAD("black.e000", 0xe000, 0x2000, CRC(9142121b) SHA1(264380e7ad36b7b1867658e1af387624d2a72630) ) // TMS2764JL-25
ROM_END
} // anonymous namespace
/******************************************************************************
Drivers
******************************************************************************/
// YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS
CONS( 1986, feleg, 0, 0, feleg, feleg, as12_state, empty_init, "Fidelity Electronics", "Elegance Chess Challenger (model 6085)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_TIMING )
CONS( 1985, felega, feleg, 0, felega, felega, as12_state, empty_init, "Fidelity Electronics", "Elegance Chess Challenger (model AS12)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_TIMING )
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