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-rw-r--r--src/mame/drivers/sc1.cpp154
1 files changed, 90 insertions, 64 deletions
diff --git a/src/mame/drivers/sc1.cpp b/src/mame/drivers/sc1.cpp
index 94dc6ce8c18..045bbd8f4ee 100644
--- a/src/mame/drivers/sc1.cpp
+++ b/src/mame/drivers/sc1.cpp
@@ -2,63 +2,87 @@
// copyright-holders:Sandro Ronco
/***************************************************************************
-Schachcomputer SC1
+Schachcomputer SC 1 driver
-2009-05-12 Skeleton driver.
+VEB Mikroelektronik's 1st chess computer. It was canceled before wide release.
-ToDo:
-- speaker
-- LEDs
+TODO:
+- speaker, it's very noisy if hooked up as it is now, missing enable-bit?
+ it still toggles matrix d1 if T(tone off) is pressed
+- LEDs, they're not on digit d7
- 7seg sometimes flashes
-
+- setting level doesn't work? game should boot with "PS 1"
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/z80pio.h"
-#include "sound/spkrdev.h"
+#include "sound/dac.h"
+#include "sound/volt_reg.h"
#include "speaker.h"
#include "sc1.lh"
+namespace {
+
class sc1_state : public driver_device
{
public:
- sc1_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_speaker(*this, "speaker")
- , m_digits(*this, "digit%u", 0U)
+ sc1_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_dac(*this, "dac"),
+ m_keypad(*this, "LINE%u", 1),
+ m_digits(*this, "digit%u", 0U),
+ m_leds(*this, "led%u", 0U)
{ }
void sc1(machine_config &config);
+protected:
+ virtual void machine_start() override;
+
private:
- DECLARE_WRITE8_MEMBER( matrix_w );
- DECLARE_WRITE8_MEMBER( pio_port_a_w );
- DECLARE_READ8_MEMBER( pio_port_b_r );
+ required_device<cpu_device> m_maincpu;
+ required_device<z80pio_device> m_pio;
+ required_device<dac_bit_interface> m_dac;
+ required_ioport_array<8> m_keypad;
+
+ output_finder<4> m_digits;
+ output_finder<2> m_leds;
void sc1_io(address_map &map);
void sc1_mem(address_map &map);
uint8_t m_matrix;
- virtual void machine_start() override { m_digits.resolve(); }
- required_device<cpu_device> m_maincpu;
- required_device<speaker_sound_device> m_speaker;
- output_finder<4> m_digits;
+
+ DECLARE_WRITE8_MEMBER(matrix_w);
+ DECLARE_WRITE8_MEMBER(pio_port_a_w);
+ DECLARE_READ8_MEMBER(pio_port_b_r);
};
+void sc1_state::machine_start()
+{
+ m_digits.resolve();
+ m_leds.resolve();
+
+ m_matrix = 0;
+ save_item(NAME(m_matrix));
+}
+
/***************************************************************************
Display
***************************************************************************/
-WRITE8_MEMBER( sc1_state::pio_port_a_w )
+WRITE8_MEMBER(sc1_state::pio_port_a_w)
{
- uint8_t digit = bitswap<8>( data,3,4,6,0,1,2,7,5 ) & 0x7f;
+ // digit segment data
+ uint8_t digit = bitswap<8>(data,3,4,6,0,1,2,7,5) & 0x7f;
if (m_matrix & 0x04)
m_digits[3] = digit;
@@ -77,31 +101,23 @@ WRITE8_MEMBER( sc1_state::pio_port_a_w )
***************************************************************************/
-WRITE8_MEMBER( sc1_state::matrix_w )
+WRITE8_MEMBER(sc1_state::matrix_w)
{
+ // d1: speaker out
+ //m_dac->write(BIT(data, 1));
+
+ // keypad/led mux
m_matrix = data;
}
-READ8_MEMBER( sc1_state::pio_port_b_r )
+READ8_MEMBER(sc1_state::pio_port_b_r)
{
uint8_t data = 0;
- if (m_matrix & 0x01)
- data |= ioport("LINE1")->read();
- if (m_matrix & 0x02)
- data |= ioport("LINE2")->read();
- if (m_matrix & 0x04)
- data |= ioport("LINE3")->read();
- if (m_matrix & 0x08)
- data |= ioport("LINE4")->read();
- if (m_matrix & 0x10)
- data |= ioport("LINE5")->read();
- if (m_matrix & 0x20)
- data |= ioport("LINE6")->read();
- if (m_matrix & 0x40)
- data |= ioport("LINE7")->read();
- if (m_matrix & 0x80)
- data |= ioport("LINE8")->read();
+ // read keypad matrix
+ for (int i = 0; i < 8; i++)
+ if (BIT(m_matrix, i))
+ data |= m_keypad[i]->read();
return data;
}
@@ -118,50 +134,54 @@ void sc1_state::sc1_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
- map(0x80, 0x83).rw("z80pio", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt));
+ map(0x80, 0x83).rw(m_pio, FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt));
map(0xfc, 0xfc).w(FUNC(sc1_state::matrix_w));
}
+
/* Input ports */
+
static INPUT_PORTS_START( sc1 )
PORT_START("LINE1")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_D)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_D)
PORT_START("LINE2")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_B)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_F)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_B)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_F)
PORT_START("LINE3")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_C)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_G)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_C)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_G)
PORT_START("LINE4")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_A)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_E)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_A)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_E)
PORT_START("LINE5")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_H)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CE") PORT_CODE(KEYCODE_DEL)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_H)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CE") PORT_CODE(KEYCODE_R)
PORT_START("LINE6")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ENT") PORT_CODE(KEYCODE_ENTER)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ENT") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD)
PORT_START("LINE7")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("P") PORT_CODE(KEYCODE_O)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("W/S") PORT_CODE(KEYCODE_W)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("P") PORT_CODE(KEYCODE_O)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("W/S") PORT_CODE(KEYCODE_W)
PORT_START("LINE8")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C") PORT_CODE(KEYCODE_M)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C") PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE)
INPUT_PORTS_END
+/* Machine config */
+
void sc1_state::sc1(machine_config &config)
{
/* basic machine hardware */
- Z80(config, m_maincpu, XTAL(4'000'000));
+ Z80(config, m_maincpu, 9.8304_MHz_XTAL/4); // U880 Z80 clone
m_maincpu->set_addrmap(AS_PROGRAM, &sc1_state::sc1_mem);
m_maincpu->set_addrmap(AS_IO, &sc1_state::sc1_io);
@@ -169,22 +189,28 @@ void sc1_state::sc1(machine_config &config)
config.set_default_layout(layout_sc1);
/* devices */
- z80pio_device& pio(Z80PIO(config, "z80pio", XTAL(4'000'000)));
- pio.out_pa_callback().set(FUNC(sc1_state::pio_port_a_w));
- pio.in_pb_callback().set(FUNC(sc1_state::pio_port_b_r));
+ Z80PIO(config, m_pio, 9.8304_MHz_XTAL/4);
+ m_pio->out_pa_callback().set(FUNC(sc1_state::pio_port_a_w));
+ m_pio->in_pb_callback().set(FUNC(sc1_state::pio_port_b_r));
/* sound hardware */
- SPEAKER(config, "mono").front_center();
- SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50);
+ 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 definition */
+
ROM_START( sc1 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "sc1.rom", 0x0000, 0x1000, CRC(26965b23) SHA1(01568911446eda9f05ec136df53da147b7c6f2bf))
ROM_END
+} // anonymous namespace
+
+
/* Driver */
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1989, sc1, 0, 0, sc1, sc1, sc1_state, empty_init, "VEB Mikroelektronik Erfurt", "Schachcomputer SC1", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
+// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
+COMP( 1981, sc1, 0, 0, sc1, sc1, sc1_state, empty_init, "VEB Mikroelektronik Erfurt", "Schachcomputer SC 1", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )