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// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:Berger, yoyo_chessboard
/*******************************************************************************
Fidelity SC9, Fidelity Playmatic "S"
TODO:
- fscc9ps module switch and led
- verify fscc9ps XTAL (checked against sound recording, 99.97% similarity)
Hardware notes:
Fidelity Sensory Chess Challenger "9" (SC9) overview:
- PCB label: 510-1046C01 2-1-82
- R6502-13, 1.4MHz from resonator, another pcb with the same resonator was measured 1.49MHz*
- 2KB RAM(TMM2016P), 2*8KB ROM(HN48364P)
- 36-pin edge connector, assume same as SC12
- 8*(8+1) buttons, 8*8+1 LEDs
*: 2 other boards were measured 1.60MHz and 1.88MHz(newest serial). Online references
suggest 3 versions of SC9(C01) total: 1.5MHz, 1.6MHz, and 1.9MHz.
I/O is via TTL, not further documented here
3 versions were available, the newest "B" version was 2MHz and included the Budapest program.
The Playmatic S was only released in Germany, it's basically a 'deluxe' version of SC9
with magnet sensors and came with CB9 and CB16.
================================================================================
Starting with SC9, Fidelity added a cartridge slot to their chess computers, meant for
extra book opening databases and recorded games.
Known modules (*denotes undumped):
- CB9: Challenger Book Openings 1
- CB16: Challenger Book Openings 2
- *CG64: 64 Greatest Games
- *EOA-EOE: Challenger Book Openings: Chess Encyclopedia Volume A-E (5 modules)
- *TDF: Challenger Book Openings: Tarrasch Defense to the Queen's Gambit
The edge connector has D0-D7, A0-A13, 2 chip select lines, read/write lines, IRQ line.
IRQ and write strobe are unused. Maximum known size is 16KB.
*******************************************************************************/
#include "emu.h"
#include "bus/generic/carts.h"
#include "bus/generic/slot.h"
#include "cpu/m6502/m6502.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_playmatic.lh"
#include "fidel_sc9.lh"
namespace {
class sc9_state : public driver_device
{
public:
sc9_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_inputs(*this, "IN.0")
{ }
// machine configs
void sc9b(machine_config &config);
void sc9c(machine_config &config);
void sc9d(machine_config &config);
void playmatic(machine_config &config);
DECLARE_INPUT_CHANGED_MEMBER(sc9c_change_cpu_freq);
protected:
virtual void machine_start() override ATTR_COLD;
// devices/pointers
required_device<cpu_device> m_maincpu;
required_device<sensorboard_device> m_board;
required_device<pwm_display_device> m_display;
required_device<dac_1bit_device> m_dac;
required_ioport m_inputs;
u8 m_inp_mux = 0;
u8 m_led_data = 0;
// address maps
void sc9_map(address_map &map) ATTR_COLD;
void sc9d_map(address_map &map) ATTR_COLD;
// I/O handlers
void control_w(u8 data);
void led_w(offs_t offset, u8 data);
u8 input_r();
u8 input_d7_r(offs_t offset);
};
void sc9_state::machine_start()
{
// register for savestates
save_item(NAME(m_inp_mux));
save_item(NAME(m_led_data));
}
INPUT_CHANGED_MEMBER(sc9_state::sc9c_change_cpu_freq)
{
// SC9(C01) was released with 1.5MHz, 1.6MHz, or 1.9MHz CPU
static const u32 freq[3] = { 1'500'000, 1'600'000, 1'900'000 };
m_maincpu->set_unscaled_clock(freq[newval % 3]);
}
/*******************************************************************************
I/O
*******************************************************************************/
void sc9_state::control_w(u8 data)
{
// d0-d3: 74245 P0-P3
// 74245 Q0-Q8: input mux, led select
m_inp_mux = data & 0xf;
u16 sel = 1 << m_inp_mux;
m_display->write_my(sel);
// 74245 Q9: speaker out
m_dac->write(BIT(sel, 9));
// d4,d5: ?
// d6,d7: N/C
}
void sc9_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);
m_display->write_mx(m_led_data);
}
u8 sc9_state::input_r()
{
// d0-d7: multiplexed inputs (active low)
u8 data = 0;
// read chessboard sensors
if (m_inp_mux < 8)
data = m_board->read_file(m_inp_mux);
// read button panel
else if (m_inp_mux == 8)
data = m_inputs->read();
return ~data;
}
u8 sc9_state::input_d7_r(offs_t offset)
{
// a0-a2,d7: multiplexed inputs
return (input_r() >> offset & 1) ? 0x80 : 0;
}
/*******************************************************************************
Address Maps
*******************************************************************************/
void sc9_state::sc9_map(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x07ff).mirror(0x1800).ram();
map(0x2000, 0x5fff).r("cartslot", FUNC(generic_slot_device::read_rom));
map(0x6000, 0x6000).mirror(0x1fff).w(FUNC(sc9_state::control_w));
map(0x8000, 0x8007).mirror(0x1ff8).w(FUNC(sc9_state::led_w)).nopr();
map(0xa000, 0xa000).mirror(0x1fff).r(FUNC(sc9_state::input_r));
map(0xc000, 0xffff).rom();
}
void sc9_state::sc9d_map(address_map &map)
{
sc9_map(map);
map(0xa000, 0xa007).mirror(0x1ff8).r(FUNC(sc9_state::input_d7_r));
}
/*******************************************************************************
Input Ports
*******************************************************************************/
static INPUT_PORTS_START( sc9 )
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_CODE(KEYCODE_BACKSPACE) PORT_NAME("CL")
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_CODE(KEYCODE_N) PORT_NAME("RE")
INPUT_PORTS_END
static INPUT_PORTS_START( sc9c )
PORT_INCLUDE( sc9 )
PORT_START("CPU")
PORT_CONFNAME( 0x03, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, sc9_state, sc9c_change_cpu_freq, 0) // factory set
PORT_CONFSETTING( 0x00, "1.5MHz" )
PORT_CONFSETTING( 0x01, "1.6MHz" )
PORT_CONFSETTING( 0x02, "1.9MHz" )
INPUT_PORTS_END
/*******************************************************************************
Machine Configs
*******************************************************************************/
void sc9_state::sc9d(machine_config &config)
{
// basic machine hardware
M6502(config, m_maincpu, 3.9_MHz_XTAL / 2); // R6502AP, 3.9MHz resonator
m_maincpu->set_addrmap(AS_PROGRAM, &sc9_state::sc9d_map);
auto &irq_clock(CLOCK(config, "irq_clock", 600)); // from 555 timer (22nF, 102K, 2.7K), ideal frequency is 600Hz
irq_clock.set_pulse_width(attotime::from_usec(41)); // active for 41us
irq_clock.signal_handler().set_inputline(m_maincpu, M6502_IRQ_LINE);
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(200));
// video hardware
PWM_DISPLAY(config, m_display).set_size(9, 8);
config.set_default_layout(layout_fidel_sc9);
// 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 sc9_state::sc9b(machine_config &config)
{
sc9d(config);
// basic machine hardware
m_maincpu->set_clock(1'500'000); // from ceramic resonator "681 JSA", measured
m_maincpu->set_addrmap(AS_PROGRAM, &sc9_state::sc9_map);
}
void sc9_state::playmatic(machine_config &config)
{
sc9b(config);
// basic machine hardware
m_maincpu->set_clock(5.626_MHz_XTAL / 2); // advertised as double the speed of SC9
m_board->set_type(sensorboard_device::MAGNETS);
config.set_default_layout(layout_fidel_playmatic);
}
/*******************************************************************************
ROM Definitions
*******************************************************************************/
ROM_START( fscc9 ) // PCB label 510-1046D01
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("101-1034b01", 0xc000, 0x2000, CRC(65288753) SHA1(651f5ca5969ddd72a20cbebdec2de83c4bf10650) )
ROM_LOAD("101-1034c02", 0xe000, 0x2000, CRC(238b092f) SHA1(7ddffc6dba822aee9d8ad6815b23024ed5cdfd26) )
ROM_END
ROM_START( fscc9b ) // PCB label 510-1046B01
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("101-1034a01", 0xc000, 0x2000, CRC(b845c458) SHA1(d3fda65dbd9fae44fa4b93f8207839d8fa0c367a) )
ROM_LOAD("101-1034a02", 0xe000, 0x2000, CRC(ecfa0a4c) SHA1(738df99a250fad0b1da5ebeb8c92a9ad1461417b) )
ROM_END
ROM_START( fscc9c ) // PCB label 510-1046C01
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("101-1034a01", 0xc000, 0x2000, CRC(b845c458) SHA1(d3fda65dbd9fae44fa4b93f8207839d8fa0c367a) ) // HN48364P
ROM_LOAD("101-1034b02", 0xe000, 0x2000, CRC(cbaf97d7) SHA1(7ed8e68bb74713d9e2ff1d9c037012320b7bfcbf) ) // "
ROM_END
ROM_START( fscc9ps )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD("play64c1.bin", 0xc000, 0x2000, CRC(e96aa95d) SHA1(16d90cf0ef166aef579d442671290a2c43e24dfe) )
ROM_LOAD("play64en.bin", 0xe000, 0x2000, CRC(6fa188d2) SHA1(1b9b0209c496c89ecb7f9ec07bfd9429ff9b275e) )
ROM_END
} // anonymous namespace
/*******************************************************************************
Drivers
*******************************************************************************/
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS
SYST( 1982, fscc9, 0, 0, sc9d, sc9, sc9_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger \"9\" (rev. D)", MACHINE_SUPPORTS_SAVE ) // aka version "B"
SYST( 1982, fscc9b, fscc9, 0, sc9b, sc9, sc9_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger \"9\" (rev. B)", MACHINE_SUPPORTS_SAVE )
SYST( 1982, fscc9c, fscc9, 0, sc9b, sc9c, sc9_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger \"9\" (rev. C)", MACHINE_SUPPORTS_SAVE )
SYST( 1983, fscc9ps, fscc9, 0, playmatic, sc9, sc9_state, empty_init, "Fidelity Deutschland", "Sensory 9 Playmatic S", MACHINE_SUPPORTS_SAVE ) // 9 is not between quotation marks here
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