cothello: add coin handling and sound

src/mame/dataeast/astrof.cpp

@@ -57,10 +57,11 @@
           emulates an unmodified PCB, you can enable the hacks in the DRIVER
           CONFIGURATION menu.
 
+          B&W cabinet versions also exist.
+
           Versions of Tomahawk using the Astro Fighter PROM have been seen,
           see notes in ROM loading.
 
-
 ****************************************************************************/
 
 

src/mame/nintendo/cothello.cpp

@@ -12,27 +12,32 @@ and is presumed to be on the same base hardware as the arcade version.
 
 Hardware notes:
 - PCB label: COG CPU
-- M58710S (8080A), ?MHz XTAL
+- M58710S (8080A), 3.579545MHz XTAL
 - 3*1KB M58732S 2708 ROM, 4th socket is empty
 - 256 bytes RAM (2*M58722P 2111A), 0.5KB DRAM (M58755S)
 - M58741P Color TV Interface, 64*64 1bpp video
+- 7seg time counter (not software controlled)
 - beeper
 
 TODO:
-- verify XTAL
 - verify video timing
-- coin
+- beeper duration and base frequency is approximated (divisor is correct)
-- sound
+- CPU speed is wrong, it's likely running at 1.79MHz. But that's way too fast
-- is there a button select, or is current input emulation correct where for
+  compared to videos of the game. 0.9MHz(XTAL/4) is also too fast. It's probably
-  example P1 can move P2 cursor? (the only unique P2 button is the Set button)
+  due to the M58741P HOLD pin halting the 8080, which is not emulated.
-- unknown if the screen is color or B&W + overlay, but since the video chip is
+- Is there a button select somewhere? I really can't find any. Or is current
-  meant for a color tv, let's assume the green tint is from the screen itself
+  input emulation correct where for example P1 can move P2 cursor? (the only
+  unique P2 button is the Set button)
+- It's not known if the screen is color or B&W + overlay, but since the video
+  chip is meant for a color tv, let's assume the green tint is from the screen
+  itself. Photos of the home version also show a green tint.
 
 *******************************************************************************/
 
 #include "emu.h"
 
 #include "cpu/i8085/i8085.h"
+#include "sound/beep.h"
 
 #include "screen.h"
 #include "speaker.h"
@@ -50,26 +55,52 @@ public:
 		m_maincpu(*this, "maincpu"),
 		m_screen(*this, "screen"),
 		m_vram(*this, "vram"),
-		m_inputs(*this, "IN.%u", 0)
+		m_beeper(*this, "beeper"),
+		m_inputs(*this, "IN.%u", 0),
+		m_digits(*this, "digit%u", 0U)
 	{ }
 
 	void cothello(machine_config &config);
 
+	DECLARE_INPUT_CHANGED_MEMBER(insert_coin);
+
+protected:
+	virtual void machine_start() override;
+
 private:
 	required_device<cpu_device> m_maincpu;
 	required_device<screen_device> m_screen;
 	required_shared_ptr<u8> m_vram;
-	required_ioport_array<3> m_inputs;
+	required_device<beep_device> m_beeper;
+	required_ioport_array<4> m_inputs;
+	output_finder<4> m_digits;
 
 	void main_map(address_map &map);
 
 	u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
 
-	u8 input_r();
 	u8 coin_r();
+	u8 input_r();
 	void sound_w(u8 data);
+
+	TIMER_CALLBACK_MEMBER(counter_tick);
+	TIMER_CALLBACK_MEMBER(beeper_off) { m_beeper->set_state(0); }
+
+	u16 m_counter = 0;
+	emu_timer *m_counter_timer;
+	emu_timer *m_beeper_off;
 };
 
+void cothello_state::machine_start()
+{
+	m_digits.resolve();
+
+	m_counter_timer = timer_alloc(FUNC(cothello_state::counter_tick), this);
+	m_beeper_off = timer_alloc(FUNC(cothello_state::beeper_off), this);
+
+	save_item(NAME(m_counter));
+}
+
 
 
 /*******************************************************************************
@@ -96,6 +127,46 @@ u32 cothello_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
     I/O
 *******************************************************************************/
 
+INPUT_CHANGED_MEMBER(cothello_state::insert_coin)
+{
+	if (!newval || m_counter_timer->enabled())
+		return;
+
+	// reset counter
+	m_counter = ~0;
+	m_counter_timer->adjust(attotime::zero);
+}
+
+TIMER_CALLBACK_MEMBER(cothello_state::counter_tick)
+{
+	m_counter++;
+
+	// highest digit is compared to a digit wheel setting
+	u8 max = std::clamp(int(m_inputs[3]->read()), 1, 9);
+	u8 high = (m_counter / 100) % 10;
+
+	if (high == 0 || high == max)
+		m_maincpu->set_input_line(0, HOLD_LINE);
+
+	if (high != max)
+		m_counter_timer->adjust(attotime::from_seconds(1));
+
+	// output counter to 7segs
+	static const u8 led_map[] = { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f };
+
+	m_digits[0] = led_map[m_counter % 10];
+	m_digits[1] = led_map[(m_counter / 10) % 10];
+	m_digits[2] = led_map[high];
+}
+
+u8 cothello_state::coin_r()
+{
+	// d0-d2: coin status
+	// d3: ?
+	// d4-d7: unused
+	return m_counter_timer->enabled() ? 0xfb : 0xff;
+}
+
 u8 cothello_state::input_r()
 {
 	u8 data = 0xff;
@@ -106,14 +177,22 @@ u8 cothello_state::input_r()
 	return data;
 }
 
-u8 cothello_state::coin_r()
-{
-	return 0xfb;
-}
-
 void cothello_state::sound_w(u8 data)
 {
-	//printf("%X ",data);
+	if (data & 0x80)
+	{
+		// d3: beeper start
+		if (data & 8)
+		{
+			m_beeper->set_state(1);
+			m_beeper_off->adjust(attotime::from_msec(80));
+		}
+
+		// d0-d2: beeper frequency
+		u8 freq = (data & 0x7) + 1;
+		const u32 base = 3500;
+		m_beeper->set_clock(base / freq);
+	}
 }
 
 
@@ -164,6 +243,21 @@ static INPUT_PORTS_START( cothello )
 	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL PORT_NAME("P2 Pass")
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL PORT_NAME("P2 Set")
 	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+	PORT_START("IN.3")
+	PORT_CONFNAME( 0x0f, 0x05, "Time" )
+	PORT_DIPSETTING(     0x01, "100 seconds" )
+	PORT_DIPSETTING(     0x02, "200 seconds" )
+	PORT_DIPSETTING(     0x03, "300 seconds" )
+	PORT_DIPSETTING(     0x04, "400 seconds" )
+	PORT_DIPSETTING(     0x05, "500 seconds" )
+	PORT_DIPSETTING(     0x06, "600 seconds" )
+	PORT_DIPSETTING(     0x07, "700 seconds" )
+	PORT_DIPSETTING(     0x08, "800 seconds" )
+	PORT_DIPSETTING(     0x09, "900 seconds" )
+
+	PORT_START("COIN")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED_MEMBER(DEVICE_SELF, cothello_state, insert_coin, 0)
 INPUT_PORTS_END
 
 
@@ -176,7 +270,6 @@ void cothello_state::cothello(machine_config &config)
 {
 	// basic machine hardware
 	I8080A(config, m_maincpu, 750000);
-	m_maincpu->set_vblank_int("screen", FUNC(cothello_state::irq0_line_hold));
 	m_maincpu->set_addrmap(AS_PROGRAM, &cothello_state::main_map);
 
 	// video hardware
@@ -188,6 +281,8 @@ void cothello_state::cothello(machine_config &config)
 	m_screen->set_screen_update(FUNC(cothello_state::screen_update));
 
 	// sound hardware
+	SPEAKER(config, "mono").front_center();
+	BEEP(config, m_beeper, 0).add_route(ALL_OUTPUTS, "mono", 0.25);
 }
 
 
@@ -212,4 +307,4 @@ ROM_END
 ******************************************************************************/
 
 //    YEAR  NAME      PARENT  MACHINE    INPUT     CLASS           INIT        SCREEN  COMPANY, FULLNAME, FLAGS
-GAMEL(1978, cothello, 0,      cothello,  cothello, cothello_state, empty_init, ROT0,   "Nintendo", "Computer Othello", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_NO_SOUND, layout_cothello )
+GAMEL(1978, cothello, 0,      cothello,  cothello, cothello_state, empty_init, ROT0,   "Nintendo", "Computer Othello", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_IMPERFECT_SOUND, layout_cothello )