casio/cps200.cpp: Added a skeleton Casio CPS-2000 driver; also improved µPD934 and MSM6200 emulation. (#13591)

* machine/msm6200.cpp: Scan matrix on a timer until a change is detected.
* sound/upd934g.cpp: Fixed play sample command.
* casio/cz1.cpp: Added MSM6200 clock input frequency.

New systems marked not working
---------------
Casio CPS-2000 [BCM, Devin Acker]

src/devices/machine/msm6200.cpp

@@ -21,6 +21,8 @@ msm6200_device::msm6200_device(const machine_config &mconfig, const char *tag, d
 /**************************************************************************/
 void msm6200_device::device_start()
 {
+	m_timer = timer_alloc(FUNC(msm6200_device::scan_timer), this);
+
 	m_cmd = 0xf;
 
 	save_item(NAME(m_cmd));
@@ -39,6 +41,18 @@ void msm6200_device::device_reset()
 	std::fill(std::begin(m_last_state), std::end(m_last_state), 0);
 }
 
+/**************************************************************************/
+TIMER_CALLBACK_MEMBER(msm6200_device::scan_timer)
+{
+	(++m_row) %= m_keys.size();
+	m_key_state = m_keys[m_row].read_safe(0);
+	if (m_key_state != m_last_state[m_row])
+	{
+		m_irq_cb(1);
+		m_timer->adjust(attotime::never);
+	}
+}
+
 /**************************************************************************/
 void msm6200_device::write(offs_t offset, u8 data)
 {
@@ -60,30 +74,32 @@ void msm6200_device::write(offs_t offset, u8 data)
 			}
 		}
 		if (m_key_state == m_last_state[m_row])
+		{
 			m_irq_cb(0);
+			m_timer->adjust(attotime::zero, 0, attotime::from_ticks(TIMER_RATE, clock()));
+		}
 		break;
 
 	case 1: // read velocity
 		m_key_data = m_velocity.read_safe(0x3f);
 		break;
 
-	case 2: // next row?
+	case 2:
-		(++m_row) %= m_keys.size();
 		// TODO: what should this one actually be?
 		// the cz1/ht6000 key MCU code outputs the result to port 1 for debugging
 		m_key_data = m_row;
 		break;
 
-	case 7: // capture current row?
+	case 7: // ?
-		m_key_state = m_keys[m_row].read_safe(0);
+		// cz1/ht6000 writes this constantly, cps2000 much less frequently
-		if (m_key_state != m_last_state[m_row])
-			m_irq_cb(1);
 		break;
 
-	case 8: // init all rows
+	case 8: // init all rows, start scanning
 		for (int i = 0; i < m_keys.size(); i++)
 			m_last_state[i] = m_keys[i].read_safe(0);
+
 		m_irq_cb(0);
+		m_timer->adjust(attotime::zero, 0, attotime::from_ticks(TIMER_RATE, clock()));
 		break;
 
 	default:

src/devices/machine/msm6200.h

@@ -24,11 +24,17 @@ protected:
 	virtual void device_reset() override ATTR_COLD;
 
 private:
+	static constexpr unsigned TIMER_RATE = 256; // arbitrary
+
+	TIMER_CALLBACK_MEMBER(scan_timer);
+
 	optional_ioport_array<38> m_keys;
 	optional_ioport m_velocity;
 
 	devcb_write_line m_irq_cb;
 
+	emu_timer *m_timer;
+
 	u8 m_cmd, m_row, m_key_data;
 	u8 m_key_state;
 	u8 m_last_state[38];

src/devices/sound/upd934g.cpp

@@ -53,7 +53,8 @@ void upd934g_device::device_start()
 	m_stream = stream_alloc(0, 4, 20000);
 
 	// register for save states
-	save_pointer(NAME(m_addr), 16);
+	save_item(NAME(m_addr));
+	save_item(NAME(m_valid));
 
 	save_item(STRUCT_MEMBER(m_channel, pos));
 	save_item(STRUCT_MEMBER(m_channel, playing));
@@ -71,8 +72,15 @@ void upd934g_device::device_reset()
 {
 	m_ready = false;
 
+	for (unsigned i = 0; i < 16; i++)
+		m_addr[i] = m_valid[i] = 0;
+
 	for (unsigned i = 0; i < 4; i++)
+	{
+		m_channel[i].pos = 0;
 		m_channel[i].playing = -1;
+		m_channel[i].effect = 0;
+	}
 }
 
 //-------------------------------------------------
@@ -86,14 +94,15 @@ void upd934g_device::sound_stream_update(sound_stream &stream, std::vector<read_
 	{
 		if (m_ready && m_channel[ch].playing != -1)
 		{
-			uint16_t end = m_addr[m_channel[ch].playing + 1] - 1;
+			uint16_t end = m_addr[(m_channel[ch].playing + 1) & 0xf] - 1;
 
 			for (unsigned i = 0; i < outputs[ch].samples(); i++)
 			{
 				int16_t raw = static_cast<int8_t>(read_byte(m_channel[ch].pos)) * 4;
 
 				// normal, muted, accented
-				const double adjust[] = { 0, 0.7, 0.4, 1.0 };
+				// TODO: cps2000 regularly sets effect bits to 0 instead of 2 - are these the same?
+				const double adjust[] = { 0.4, 0.7, 0.4, 1.0 };
 				raw *= adjust[m_channel[ch].effect];
 
 				outputs[ch].put_int(i, raw, 32768 / 64);
@@ -118,23 +127,20 @@ void upd934g_device::sound_stream_update(sound_stream &stream, std::vector<read_
 
 void upd934g_device::write(offs_t offset, uint8_t data)
 {
-	switch (offset)
+	switch (offset & 3)
 	{
 	case 0:
 		// format of data written here is:
-		// 76------  command
+		// 76------  effect
 		// --5432--  sample number
 		// ------10  output channel
 		m_sample = (data >> 2) & 0x0f;
 
-		switch (data >> 6)
+		// don't play a sample unless we're sure it's actually supposed to play:
-		{
+		// - all models write this with effect=0 to select which sample to set the address of
-		case 0:
+		// - cps2000 writes this with effect=0 to play muted(?) samples
-			LOG("CMD STORE ADDRESS sample %x\n", m_sample);
+		// - cps2000 also writes this with effect=1 and sample=f on boot even though there are only 12 valid samples
-			break;
+		if (m_valid[m_sample])
-		case 1: // normal
-		case 2: // muted
-		case 3: // accented
 		{
 			const u8 ch = (data & 3) ^ 2; // effective order seems to be "2, 3, 0, 1"
 			LOG("CMD PLAY sample %x (channel %d, effect %d)\n", m_sample, ch, data >> 6);
@@ -143,13 +149,12 @@ void upd934g_device::write(offs_t offset, uint8_t data)
 			m_channel[ch].effect = data >> 6;
 		}
 		break;
-		}
-		break;
 	case 1:
 		m_addr[m_sample] = (m_addr[m_sample] & 0xff00) | (data << 0);
 		break;
 	case 2:
 		m_addr[m_sample] = (m_addr[m_sample] & 0x00ff) | (data << 8);
+		m_valid[m_sample] = 1;
 		LOG("  sample %x address = %04x\n", m_sample, m_addr[m_sample]);
 		break;
 	case 3:

src/devices/sound/upd934g.h

@@ -27,7 +27,7 @@ public:
 	// construction/destruction
 	upd934g_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
 
-	void write(offs_t offset, uint8_t data);
+	void write(offs_t offset, u8 data);
 
 protected:
 	// device-level overrides
@@ -39,18 +39,19 @@ protected:
 private:
 	sound_stream *m_stream;
 
-	uint16_t m_addr[16];
+	u16 m_addr[16];
+	u8 m_valid[16];
 
 	struct
 	{
-		uint16_t pos;
+		u16 pos;
-		int playing;
+		s8 playing;
-		int effect;
+		u8 effect;
 	}
 	m_channel[4];
 
-	int m_sample;
+	u8 m_sample;
-	bool m_ready;
+	u8 m_ready;
 };
 
 // device type definition

src/emu/xtal.cpp

@@ -83,6 +83,7 @@ const double XTAL::known_xtals[] = {
 	  2'250'000, // 2.25_MHz_XTAL          Resonator - YM2154 on Yamaha PSR-60 & PSR-70
 	  2'376'000, // 2.376_MHz_XTAL         CIT-101 keyboard
 	  2'457'600, // 2.4576_MHz_XTAL        Atari ST MFP
+	  2'470'000, // 2.47_MHz_XTAL          CSA2.47MG ceramic oscillator - Casio CZ-1
 	  2'500'000, // 2.5_MHz_XTAL           Janken Man units
 	  2'600'000, // 2.6_MHz_XTAL           Sharp PC-1500
 	  2'700'000, // 2.7_MHz_XTAL           Resonator - YM2154 on Yamaha RX15
@@ -119,6 +120,7 @@ const double XTAL::known_xtals[] = {
 	  4'433'619, // 4.433619_MHz_XTAL      PAL color subcarrier (technically 4.43361875mhz)
 	  4'608'000, // 4.608_MHz_XTAL         Luxor ABC-77 keyboard (Keytronic custom part #48-300-107 is equivalent)
 	  4'915'200, // 4.9152_MHz_XTAL        -
+	  4'946'800, // 4.9468_MHz_XTAL        Casio CPS-2000
 	  4'946'864, // 4.946864_MHz_XTAL      Casiotone 8000
 	  4'952'000, // 4.952_MHz_XTAL         IGS M036 based mahjong games, for TT5665 sound chip
 	  5'000'000, // 5_MHz_XTAL             Mutant Night

src/mame/casio/cps2000.cpp

@@ -0,0 +1,402 @@
+// license:BSD-3-Clause
+// copyright-holders:Devin Acker
+/*
+	Skeleton driver for Casio CPS-2000 piano.
+
+	Sound hardware:
+	- 2x uPD932 consonant-vowel synth
+	- uPD934 PCM rhythm
+	- monophonic square wave bass w/ RC envelope and filter
+*/
+
+#include "emu.h"
+
+#include "cpu/upd7810/upd7810.h"
+#include "machine/msm6200.h"
+#include "sound/dac.h"
+#include "sound/flt_rc.h"
+#include "sound/upd934g.h"
+#include "sound/va_eg.h"
+#include "sound/va_vca.h"
+
+#include "speaker.h"
+
+namespace {
+
+class cps2000_state : public driver_device
+{
+public:
+	cps2000_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_kbd(*this, "kbd")
+		, m_bass_env(*this, "bass_env")
+		, m_pcm(*this, "pcm")
+		, m_keys(*this, "KC%u", 0)
+	{ }
+
+	void cps2000(machine_config &config);
+
+	void keys_w(ioport_value val) { m_key_sel = val; }
+	ioport_value keys_r();
+
+	void bass_w(ioport_value val);
+
+protected:
+	virtual void machine_start() override ATTR_COLD;
+	virtual void machine_reset() override ATTR_COLD;
+
+private:
+	void maincpu_map(address_map &map) ATTR_COLD;
+
+	void io_w(offs_t offset, u8 data);
+
+	required_device<upd78c10_device> m_maincpu;
+	required_device<msm6200_device> m_kbd;
+	required_device<va_rc_eg_device> m_bass_env;
+	required_device<upd934g_device> m_pcm;
+	
+	required_ioport_array<5> m_keys;
+
+	ioport_value m_key_sel;
+
+	u8 m_932a_regs[256];
+	u8 m_932b_regs[256];
+};
+
+/**************************************************************************/
+static INPUT_PORTS_START(cps2000)
+	PORT_START("PA")
+	PORT_BIT( 0x07, IP_ACTIVE_HIGH, IPT_OUTPUT ) PORT_WRITE_LINE_MEMBER(FUNC(cps2000_state::keys_w))
+	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_OUTPUT ) // LED outputs
+
+	PORT_START("PB")
+	PORT_BIT( 0x3f, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(FUNC(cps2000_state::keys_r))
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_OUTPUT ) // LED outputs
+
+	PORT_START("PC")
+	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_OUTPUT ) // LED outputs
+	PORT_BIT( 0x10, IP_ACTIVE_LOW,  IPT_CUSTOM ) // 934 busy
+	PORT_BIT( 0x20, IP_ACTIVE_LOW,  IPT_OUTPUT ) PORT_WRITE_LINE_MEMBER(FUNC(cps2000_state::bass_w))
+	PORT_BIT( 0xc0, IP_ACTIVE_LOW,  IPT_UNUSED )
+
+	PORT_START("kbd:KI1")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G7")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#7")
+
+	PORT_START("kbd:KI2")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F7")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E7")
+
+	PORT_START("kbd:KI3")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D#7")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D7")
+
+	PORT_START("kbd:KI4")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C#7")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C7")
+
+	PORT_START("kbd:KI5")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("B6")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A#6")
+
+	PORT_START("kbd:KI6")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A6")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G#6")
+
+	PORT_START("kbd:KI7")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G6")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#6")
+
+	PORT_START("kbd:KI8")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F6")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E6")
+
+	PORT_START("kbd:KI9")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D#6")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D6")
+
+	PORT_START("kbd:KI10")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C#6")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C6")
+
+	PORT_START("kbd:KI11")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("B5")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A#5")
+
+	PORT_START("kbd:KI12")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A5")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G#5")
+
+	PORT_START("kbd:KI13")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G5")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#5")
+
+	PORT_START("kbd:KI14")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F5")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E5")
+
+	PORT_START("kbd:KI15")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D#5")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D5")
+
+	PORT_START("kbd:KI16")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C#5")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C5")
+
+	PORT_START("kbd:KI17")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("B4")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A#4")
+
+	PORT_START("kbd:KI18")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A4")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G#4")
+
+	PORT_START("kbd:KI19")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G4")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#4")
+
+	PORT_START("kbd:KI20")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F4")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E4")
+
+	PORT_START("kbd:KI21")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D#4")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D4")
+
+	PORT_START("kbd:KI22")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C#4")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C4")
+
+	PORT_START("kbd:KI23")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("B3")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A#3")
+
+	PORT_START("kbd:KI24")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A3")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G#3")
+
+	PORT_START("kbd:KI25")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G3")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#3")
+
+	PORT_START("kbd:KI26")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F3")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E3")
+
+	PORT_START("kbd:KI27")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D#3")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D3")
+
+	PORT_START("kbd:KI28")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C#3")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C3")
+
+	PORT_START("kbd:KI29")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("B2")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A#2")
+
+	PORT_START("kbd:KI30")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A2")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G#2")
+
+	PORT_START("kbd:KI31")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G2")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#2")
+
+	PORT_START("kbd:KI32")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F2")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E2")
+
+	PORT_START("kbd:KI33")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D#2")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("D2")
+
+	PORT_START("kbd:KI34")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C#2")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("C2")
+
+	PORT_START("kbd:KI35")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("B1")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A#1")
+
+	PORT_START("kbd:KI36")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("A1")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G#1")
+
+	PORT_START("kbd:KI37")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("G1")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F#1")
+
+	PORT_START("kbd:KI38")
+	PORT_BIT(0x1, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("F1")
+	PORT_BIT(0x2, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("E1")
+
+	PORT_START("kbd:VELOCITY")
+	PORT_BIT(0x3f, 0x3f, IPT_POSITIONAL_V) PORT_NAME("Key Velocity") PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_CENTERDELTA(0) PORT_CODE_DEC(JOYCODE_X_LEFT_SWITCH) PORT_CODE_INC(JOYCODE_X_RIGHT_SWITCH)
+
+	PORT_START("AN0")
+	PORT_BIT(0xff, 0x80, IPT_POSITIONAL_V) PORT_NAME("Tempo") PORT_SENSITIVITY(10) PORT_KEYDELTA(5) PORT_CENTERDELTA(0) PORT_CODE_DEC(JOYCODE_Y_DOWN_SWITCH) PORT_CODE_INC(JOYCODE_Y_UP_SWITCH)
+
+	PORT_START("AN1")
+	PORT_BIT(0xff, 0x80, IPT_POSITIONAL_H) PORT_NAME("Tuning") PORT_SENSITIVITY(10) PORT_KEYDELTA(5) PORT_CENTERDELTA(0) PORT_PLAYER(2) PORT_CODE_DEC(JOYCODE_X_LEFT_SWITCH) PORT_CODE_INC(JOYCODE_X_RIGHT_SWITCH)
+
+	PORT_START("KC0")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Octave Unison")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Sustain")
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Chorus")
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Fingered")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Casio Chord On")
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Casio Chord Off")
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("KC1")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Start / Stop")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Synchro")
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Intro / Fill-In")
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Super Accomp")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Memory")
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Variation")
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("KC2")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 1")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 2")
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 3")
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 4")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm Select")
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Touch Response")
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("KC3")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 5")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 6")
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone 7")
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm 1")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm 2")
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm 3")
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("KC4")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Tone Select")
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Sustain Pedal")
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm 4")
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm 5")
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("Rhythm 6")
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+INPUT_PORTS_END
+
+/**************************************************************************/
+void cps2000_state::maincpu_map(address_map &map)
+{
+	map(0x0000, 0x7fff).rom();
+	map(0x8000, 0xbfff).r(m_kbd, FUNC(msm6200_device::read));
+	map(0x8000, 0xffff).w(FUNC(cps2000_state::io_w));
+}
+
+/**************************************************************************/
+void cps2000_state::cps2000(machine_config &config)
+{
+	UPD78C10(config, m_maincpu, 10'000'000);
+	m_maincpu->set_addrmap(AS_PROGRAM, &cps2000_state::maincpu_map);
+	m_maincpu->pa_out_cb().set_ioport("PA");
+	m_maincpu->pb_in_cb().set_ioport("PB");
+	m_maincpu->pb_out_cb().set_ioport("PB");
+	m_maincpu->pc_in_cb().set_ioport("PC");
+	m_maincpu->pc_out_cb().set_ioport("PC");
+	m_maincpu->an0_func().set_ioport("AN0");
+	m_maincpu->an1_func().set_ioport("AN1");
+
+	MSM6200(config, m_kbd, 4.9468_MHz_XTAL);
+	m_kbd->irq_cb().set_inputline(m_maincpu, UPD7810_INTF1);
+
+	SPEAKER(config, "lspeaker").front_left();
+	SPEAKER(config, "rspeaker").front_right();
+
+	// UPD932(config, "upd932a", 4.9468_MHz_XTAL);
+	// UPD932(config, "upd932b", 4.9468_MHz_XTAL);
+
+	DAC_1BIT(config, "bass").add_route(0, "bass_vca", 1.0);
+	m_maincpu->co0_func().set("bass", FUNC(dac_1bit_device::write));
+
+	VA_RC_EG(config, m_bass_env).set_c(CAP_U(3.3)).add_route(0, "bass_vca", 1.0 / 5);
+	VA_VCA(config, "bass_vca").configure_streaming_cv(true).add_route(0, "bass_rc1", 1.0);
+
+	FILTER_RC(config, "bass_rc1").set_lowpass(RES_K(47), CAP_N(47)).add_route(0, "bass_rc2", 1.0);
+	FILTER_RC(config, "bass_rc2").set_lowpass(RES_K(22), CAP_N(47))
+		.add_route(0, "lspeaker", 0.25).add_route(0, "rspeaker", 0.25);
+
+	UPD934G(config, m_pcm, 4.9468_MHz_XTAL / 4);
+	m_pcm->add_route(0, "lspeaker", 0.25);
+	m_pcm->add_route(0, "rspeaker", 0.125);
+	m_pcm->add_route(1, "lspeaker", 0.25);
+	m_pcm->add_route(1, "rspeaker", 0.125);
+	m_pcm->add_route(2, "lspeaker", 0.125);
+	m_pcm->add_route(2, "rspeaker", 0.25);
+	m_pcm->add_route(3, "lspeaker", 0.125);
+	m_pcm->add_route(3, "rspeaker", 0.25);
+}
+
+/**************************************************************************/
+void cps2000_state::machine_start()
+{
+	m_key_sel = 0;
+
+	std::fill(std::begin(m_932a_regs), std::end(m_932a_regs), 0);
+	std::fill(std::begin(m_932b_regs), std::end(m_932b_regs), 0);
+
+	save_item(NAME(m_key_sel));
+	save_item(NAME(m_932a_regs));
+	save_item(NAME(m_932b_regs));
+}
+
+/**************************************************************************/
+void cps2000_state::machine_reset()
+{
+}
+
+/**************************************************************************/
+ioport_value cps2000_state::keys_r()
+{
+	if (m_key_sel < 5)
+		return m_keys[m_key_sel]->read();
+
+	return 0xff;
+}
+
+/**************************************************************************/
+void cps2000_state::bass_w(ioport_value val)
+{
+	if (val)
+		m_bass_env->set_r(RES_R(270)).set_target_v(5.0);
+	else
+		m_bass_env->set_r(RES_K(22)).set_target_v(0.0);
+}
+
+/**************************************************************************/
+void cps2000_state::io_w(offs_t offset, u8 data)
+{
+	if (!BIT(offset, 14))
+		m_kbd->write(offset, data);
+	if (!BIT(offset, 13))
+		m_pcm->write(offset >> 8, offset);
+	if (!BIT(offset, 12))
+		m_932a_regs[offset & 0xff] = data;
+	if (!BIT(offset, 11))
+		m_932b_regs[offset & 0xff] = data;
+}
+
+/**************************************************************************/
+ROM_START( cps2000 )
+	ROM_REGION(0x8000, "maincpu", 0)
+	ROM_LOAD( "hn613256p-db6.bin", 0x0000, 0x8000, CRC(92b68074) SHA1(eda13d59a15077b06d95004b5f2a2a8432109893) )
+
+	ROM_REGION(0x10000, "pcm", 0)
+	ROM_LOAD( "hn613256p-da5.bin", 0x0000, 0x8000, CRC(63d6dd54) SHA1(231ffb6a4cc113133accd19dd9ed1e5165e3837e) )
+ROM_END
+
+} // anonymous namespace
+
+SYST( 1986, cps2000, 0,    0, cps2000, cps2000, cps2000_state, empty_init, "Casio", "CPS-2000", MACHINE_NOT_WORKING )

src/mame/casio/cz1.cpp

@@ -910,7 +910,7 @@ void cz1_state::cz1(machine_config &config)
 	m_mcu->t0_in_cb().set(FUNC(cz1_state::sync49_r));
 	m_mcu->t1_in_cb().set([this] () { return BIT(m_main_port[2], 7); });
 
-	MSM6200(config, "kbd").irq_cb().set_inputline(m_mcu, MCS48_INPUT_IRQ);
+	MSM6200(config, "kbd", 2.47_MHz_XTAL).irq_cb().set_inputline(m_mcu, MCS48_INPUT_IRQ); // CSA2.47MG ceramic oscillator
 
 	config.set_default_layout(layout_cz1);
 }

src/mame/mame.lst

@@ -16189,6 +16189,9 @@ casloopy
 cfx9850
 cfx9850gb
 
+@source:casio/cps2000.cpp
+cps2000
+
 @source:casio/ct8000.cpp
 ct8000
 ctfk1