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diff --git a/src/mame/drivers/sc2.cpp b/src/mame/drivers/sc2.cpp
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-// license:BSD-3-Clause
-// copyright-holders:Sandro Ronco, hap
-/***************************************************************************
-
-Schachcomputer SC 2 (G-5002.500)
-
-2nd chess computer by VEB(Volkseigener Betrieb) Funkwerk Erfurt. The company
-was renamed to VEB Mikroelektronik "Karl Marx" Erfurt in 1983, and formed into
-X-FAB Semiconductor Foundries AG after the German unification. SC 2 chess
-program is an unlicensed copy of Fidelity Chess Challenger 10 C, with some
-patches and an extra 1KB ROM to deal with the different I/O.
-
-3 versions known: initial version, revision E, revision EP.
-
-Schachcomputer SC 1 was canceled before wide release, it's assumed to
-be on similar hardware, but PCB photos show 10 ROM chips instead of 9.
-
-keypad legend:
-
-R - Rückstellen (reset)
-K - Programmstufen (level)
-W - Figurenwahl (white/black)
-P - Problemeingabe (problem mode)
-T - Tonabschaltung (sound on/off)
-L - Löschen (clear)
-Q - Quittierung (enter)
-
-Fidelity CC10 synonyms: RE, LV, RV, PB, ♪, CL, EN
-
-****************************************************************************/
-
-#include "emu.h"
-#include "cpu/z80/z80.h"
-#include "machine/z80pio.h"
-#include "video/pwm.h"
-#include "sound/dac.h"
-#include "speaker.h"
-
-#include "sc2.lh"
-
-
-namespace {
-
-class sc2_state : public driver_device
-{
-public:
- sc2_state(const machine_config &mconfig, device_type type, const char *tag) :
- driver_device(mconfig, type, tag),
- m_maincpu(*this, "maincpu"),
- m_pio(*this, "z80pio"),
- m_display(*this, "display"),
- m_dac(*this, "dac"),
- m_inputs(*this, "IN.%u", 0)
- { }
-
- void sc2(machine_config &config);
-
- // Rückstellen is also tied to CPU RESET
- DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); }
-
-protected:
- virtual void machine_start() override;
-
-private:
- required_device<cpu_device> m_maincpu;
- required_device<z80pio_device> m_pio;
- required_device<pwm_display_device> m_display;
- required_device<dac_bit_interface> m_dac;
- required_ioport_array<4> m_inputs;
-
- void main_io(address_map &map);
- void main_map(address_map &map);
-
- u8 m_inp_mux;
- u8 m_digit_data;
-
- void update_display();
- u8 pio_port_b_r();
- void pio_port_a_w(u8 data);
- void pio_port_b_w(u8 data);
- template<int State> u8 speaker_w();
-};
-
-void sc2_state::machine_start()
-{
- // zerofill
- m_inp_mux = 0;
- m_digit_data = 0;
-
- // register for savestates
- save_item(NAME(m_inp_mux));
- save_item(NAME(m_digit_data));
-}
-
-
-
-/******************************************************************************
- I/O
-******************************************************************************/
-
-void sc2_state::update_display()
-{
- m_display->matrix(~m_inp_mux, m_digit_data);
-}
-
-u8 sc2_state::pio_port_b_r()
-{
- u8 data = 0;
-
- // read keypad
- for (int i = 0; i < 4; i++)
- if (BIT(m_inp_mux, i))
- data |= m_inputs[i]->read();
-
- return data << 4 | 0xf;
-}
-
-void sc2_state::pio_port_a_w(u8 data)
-{
- // digit segment data
- m_digit_data = bitswap<8>(data,7,0,1,2,3,4,5,6);
- update_display();
-}
-
-void sc2_state::pio_port_b_w(u8 data)
-{
- // d0-d3: keypad mux(active high), led mux(active low)
- m_inp_mux = data;
- update_display();
-}
-
-template<int State>
-u8 sc2_state::speaker_w()
-{
- if (!machine().side_effects_disabled())
- m_dac->write(State);
-
- return 0xff;
-}
-
-
-
-/******************************************************************************
- Address Maps
-******************************************************************************/
-
-void sc2_state::main_map(address_map &map)
-{
- map(0x0000, 0x0fff).rom();
- map(0x1000, 0x13ff).ram();
- map(0x2000, 0x33ff).rom();
- map(0x3400, 0x3400).r(FUNC(sc2_state::speaker_w<1>));
- map(0x3c00, 0x3c00).r(FUNC(sc2_state::speaker_w<0>));
-}
-
-void sc2_state::main_io(address_map &map)
-{
- map.global_mask(0xff);
- map(0x00, 0x03).mirror(0xfc).rw(m_pio, FUNC(z80pio_device::read), FUNC(z80pio_device::write));
-}
-
-
-
-/******************************************************************************
- Input Ports
-******************************************************************************/
-
-static INPUT_PORTS_START( sc2 )
- PORT_START("IN.0")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED)
- PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
- PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE)
- PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD)
-
- PORT_START("IN.1")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_A)
- PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_B)
- PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_C)
- PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_D)
-
- PORT_START("IN.2")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_E)
- PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_F)
- PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_G)
- PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_H)
-
- PORT_START("IN.3")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
- PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("W") PORT_CODE(KEYCODE_W)
- PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHANGED_MEMBER(DEVICE_SELF, sc2_state, reset_button, 0)
- PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("P") PORT_CODE(KEYCODE_O)
-INPUT_PORTS_END
-
-
-
-/******************************************************************************
- Machine Configs
-******************************************************************************/
-
-void sc2_state::sc2(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, 9.8304_MHz_XTAL/4); // U880 Z80 clone
- m_maincpu->set_addrmap(AS_PROGRAM, &sc2_state::main_map);
- m_maincpu->set_addrmap(AS_IO, &sc2_state::main_io);
-
- Z80PIO(config, m_pio, 9.8304_MHz_XTAL/4);
- m_pio->out_pa_callback().set(FUNC(sc2_state::pio_port_a_w));
- m_pio->in_pb_callback().set(FUNC(sc2_state::pio_port_b_r));
- m_pio->out_pb_callback().set(FUNC(sc2_state::pio_port_b_w));
-
- /* video hardware */
- PWM_DISPLAY(config, m_display).set_size(4, 8);
- m_display->set_segmask(0xf, 0x7f);
- config.set_default_layout(layout_sc2);
-
- /* sound hardware */
- SPEAKER(config, "speaker").front_center();
- DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
-}
-
-
-
-/******************************************************************************
- ROM Definitions
-******************************************************************************/
-
-ROM_START( sc2 )
- ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
- ROM_LOAD( "bm008.bin", 0x0000, 0x0400, CRC(3023ea82) SHA1(07020d153d802c672c39e1af3c716dbe35e23f08) )
- ROM_LOAD( "bm009.bin", 0x0400, 0x0400, CRC(6a34814e) SHA1(e58ae6615297b028db135a48a8f9e186a4220f4f) )
- ROM_LOAD( "bm010.bin", 0x0800, 0x0400, CRC(deab0373) SHA1(81c9a7197eef8d9131e47ecd2ec35b943caee54e) )
- ROM_LOAD( "bm011.bin", 0x0c00, 0x0400, CRC(c8282339) SHA1(8d6b8861281e967a77609b6d77e80afd47d28ed2) )
- ROM_LOAD( "bm012.bin", 0x2000, 0x0400, CRC(2e6a4294) SHA1(7b9bd191c9ec73139a65c3a339ab88e1f3eb5ed2) )
- ROM_LOAD( "bm013.bin", 0x2400, 0x0400, CRC(3e02eb42) SHA1(2e4a9a8fd04c202c9518550d7e8cf9bfea394153) )
- ROM_LOAD( "bm014.bin", 0x2800, 0x0400, CRC(538d449e) SHA1(c4186995b69e97740e01eaff84a20d49d03d180f) )
- ROM_LOAD( "bm015.bin", 0x2c00, 0x0400, CRC(b4991dca) SHA1(6a6cdddf5c4afa24773acf693f58c34b99c8d328) )
- ROM_LOAD( "bm037.bin", 0x3000, 0x0400, CRC(2b67faf1) SHA1(5c65734acaeb766240dbd492a774c56fcfc382f7) )
-ROM_END
-
-ROM_START( sc2a )
- ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
- ROM_LOAD( "bm008.bin", 0x0000, 0x0400, CRC(3023ea82) SHA1(07020d153d802c672c39e1af3c716dbe35e23f08) )
- ROM_LOAD( "bm009.bin", 0x0400, 0x0400, CRC(6a34814e) SHA1(e58ae6615297b028db135a48a8f9e186a4220f4f) )
- ROM_LOAD( "bm010.bin", 0x0800, 0x0400, CRC(deab0373) SHA1(81c9a7197eef8d9131e47ecd2ec35b943caee54e) )
- ROM_LOAD( "bm011.bin", 0x0c00, 0x0400, CRC(c8282339) SHA1(8d6b8861281e967a77609b6d77e80afd47d28ed2) )
- ROM_LOAD( "bm012.bin", 0x2000, 0x0400, CRC(2e6a4294) SHA1(7b9bd191c9ec73139a65c3a339ab88e1f3eb5ed2) )
- ROM_LOAD( "bm013.bin", 0x2400, 0x0400, CRC(3e02eb42) SHA1(2e4a9a8fd04c202c9518550d7e8cf9bfea394153) )
- ROM_LOAD( "bm014.bin", 0x2800, 0x0400, CRC(538d449e) SHA1(c4186995b69e97740e01eaff84a20d49d03d180f) )
- ROM_LOAD( "bm015.bin", 0x2c00, 0x0400, CRC(b4991dca) SHA1(6a6cdddf5c4afa24773acf693f58c34b99c8d328) )
- ROM_LOAD( "bm016.bin", 0x3000, 0x0400, CRC(4fe0853a) SHA1(c2253e320778b0ea468fb54f26ae83d07f9700e6) )
-ROM_END
-
-} // anonymous namespace
-
-
-
-/******************************************************************************
- Drivers
-******************************************************************************/
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS
-COMP( 1981, sc2, 0, 0, sc2, sc2, sc2_state, empty_init, "VEB Funkwerk Erfurt", "Schachcomputer SC 2 (rev. E)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
-COMP( 1981, sc2a, sc2, 0, sc2, sc2, sc2_state, empty_init, "VEB Funkwerk Erfurt", "Schachcomputer SC 2", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )