New machines marked as NOT_WORKING

----------------------------------
Polysix Programmable Polyphonic Synthesizer [DBWBP]
Poly-61 Programmable Polyphonic Synthesizer [DBWBP]

scripts/target/mame/mess.lua

@@ -4278,6 +4278,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/plan80.cpp",
 	MAME_DIR .. "src/mame/drivers/pm68k.cpp",
 	MAME_DIR .. "src/mame/drivers/pockchal.cpp",
+	MAME_DIR .. "src/mame/drivers/polysix.cpp",
 	MAME_DIR .. "src/mame/drivers/powerstack.cpp",
 	MAME_DIR .. "src/mame/drivers/proteus3.cpp",
 	MAME_DIR .. "src/mame/drivers/pt68k4.cpp",

src/mame/drivers/polysix.cpp

@@ -0,0 +1,190 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/****************************************************************************
+
+    Skeleton driver for Korg Polysix (PS-6) & Poly-61 synthesizers.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/mcs48/mcs48.h"
+#include "machine/i8255.h"
+#include "machine/nvram.h"
+#include "machine/pit8253.h"
+
+class ps6_base_state : public driver_device
+{
+protected:
+	ps6_base_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_progmcu(*this, "progmcu")
+		, m_keymcu(*this, "keymcu")
+	{
+	}
+
+	virtual void machine_start() override;
+
+	required_device<mcs48_cpu_device> m_progmcu;
+	required_device<mcs48_cpu_device> m_keymcu;
+	std::unique_ptr<u8[]> m_nvram_ptr;
+};
+
+class polysix_state : public ps6_base_state
+{
+public:
+	polysix_state(const machine_config &mconfig, device_type type, const char *tag)
+		: ps6_base_state(mconfig, type, tag)
+	{
+	}
+
+	void polysix(machine_config &config);
+
+private:
+	u8 ext_r(offs_t offset);
+	void ext_w(offs_t offset, u8 data);
+
+	void prog_ext_map(address_map &map);
+};
+
+class poly61_state : public ps6_base_state
+{
+public:
+	poly61_state(const machine_config &mconfig, device_type type, const char *tag)
+		: ps6_base_state(mconfig, type, tag)
+		, m_ppi(*this, "ppi%u", 0U)
+		, m_pit(*this, "pit%u", 0U)
+	{
+	}
+
+	void poly61(machine_config &config);
+
+private:
+	u8 ext_r(offs_t offset);
+	void ext_w(offs_t offset, u8 data);
+
+	void prog_ext_map(address_map &map);
+
+	required_device_array<i8255_device, 3> m_ppi;
+	required_device_array<pit8253_device, 4> m_pit;
+};
+
+void ps6_base_state::machine_start()
+{
+	m_nvram_ptr = make_unique_clear<u8[]>(0x400);
+	subdevice<nvram_device>("nvram")->set_base(&m_nvram_ptr[0], 0x400);
+}
+
+u8 polysix_state::ext_r(offs_t offset)
+{
+	if (BIT(m_progmcu->p1_r(), 7))
+	{
+		u8 p2 = m_progmcu->p2_r();
+		return m_nvram_ptr[(p2 & 1) | (offset << 1) | (p2 & 2) << 8] | 0xf0;
+	}
+
+	return 0xff;
+}
+
+void polysix_state::ext_w(offs_t offset, u8 data)
+{
+	if (BIT(m_progmcu->p1_r(), 7))
+	{
+		u8 p2 = m_progmcu->p2_r();
+		m_nvram_ptr[(p2 & 1) | (offset << 1) | (p2 & 2) << 8] = data & 0x0f;
+	}
+}
+
+u8 poly61_state::ext_r(offs_t offset)
+{
+	if (!BIT(m_progmcu->p2_r(), 5))
+	{
+		u8 p1 = m_progmcu->p1_r();
+		return m_nvram_ptr[(p1 & 1) | (offset << 1) | (p1 & 2) << 8] | 0xf0;
+	}
+
+	return 0xff;
+}
+
+void poly61_state::ext_w(offs_t offset, u8 data)
+{
+	u8 p2 = m_progmcu->p2_r();
+
+	if (!BIT(p2, 5))
+	{
+		u8 p1 = m_progmcu->p1_r();
+		m_nvram_ptr[(p1 & 1) | (offset << 1) | (p1 & 2) << 8] = data & 0x0f;
+	}
+
+	if (!BIT(p2, 6))
+	{
+		if (!BIT(offset, 5) && (offset & 0x0c) != 0x0c)
+			m_ppi[(offset & 0x0c) >> 2]->write(offset & 0x03, data);
+		if (!BIT(offset, 6))
+			m_pit[(offset & 0x0c) >> 2]->write(offset & 0x03, data);
+	}
+}
+
+void polysix_state::prog_ext_map(address_map &map)
+{
+	map(0x00, 0xff).rw(FUNC(polysix_state::ext_r), FUNC(polysix_state::ext_w));
+}
+
+void poly61_state::prog_ext_map(address_map &map)
+{
+	map(0x00, 0xff).rw(FUNC(poly61_state::ext_r), FUNC(poly61_state::ext_w));
+}
+
+static INPUT_PORTS_START(polysix)
+INPUT_PORTS_END
+
+void polysix_state::polysix(machine_config &config)
+{
+	I8048(config, m_progmcu, 6_MHz_XTAL);
+	m_progmcu->set_addrmap(AS_IO, &polysix_state::prog_ext_map);
+
+	NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5514APL-3 + battery
+
+	I8049(config, m_keymcu, 6_MHz_XTAL);
+}
+
+void poly61_state::poly61(machine_config &config)
+{
+	I8049(config, m_progmcu, 6_MHz_XTAL);
+	m_progmcu->set_addrmap(AS_IO, &poly61_state::prog_ext_map);
+
+	NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // M58981P-45 + battery
+
+	I8255(config, m_ppi[0]);
+	I8255(config, m_ppi[1]);
+	I8255(config, m_ppi[2]);
+
+	PIT8253(config, m_pit[0]);
+	PIT8253(config, m_pit[1]);
+	PIT8253(config, m_pit[2]);
+	PIT8253(config, m_pit[3]);
+
+	I8049(config, m_keymcu, 6_MHz_XTAL);
+}
+
+ROM_START(polysix)
+	ROM_REGION(0x400, "progmcu", 0)
+	ROM_LOAD("d8048c-345.bin", 0x000, 0x400, CRC(130fb945) SHA1(feaf59d7694de9c3f8009d883a250039f219d046))
+
+	ROM_REGION(0x800, "keymcu", 0)
+	ROM_LOAD("d8049c-217.bin", 0x000, 0x800, CRC(246d7767) SHA1(5b608c750e7fe7832070a53a74df416fd132ecb7))
+ROM_END
+
+ROM_START(poly61)
+	ROM_REGION(0x800, "progmcu", 0)
+	ROM_LOAD("d8049c-337.bin", 0x000, 0x800, CRC(51edf723) SHA1(9001687b25a841b7a5f78bbae03745f3e995fa83))
+
+	ROM_REGION(0x800, "keymcu", 0)
+	ROM_DEFAULT_BIOS("new")
+	ROM_SYSTEM_BIOS(0, "old", "Older MCU")
+	ROMX_LOAD("d8049c-217.bin", 0x000, 0x800, CRC(246d7767) SHA1(5b608c750e7fe7832070a53a74df416fd132ecb7), ROM_BIOS(0))
+	ROM_SYSTEM_BIOS(1, "new", "Newer MCU")
+	ROMX_LOAD("d8049c-384.bin", 0x000, 0x800, CRC(bbc421b5) SHA1(be683cdce5cbf867c5b8a52802288c1296f5fbd1), ROM_BIOS(1))
+ROM_END
+
+SYST(1980, polysix, 0, 0, polysix, polysix, polysix_state, empty_init, "Korg", "Polysix Programmable Polyphonic Synthesizer", MACHINE_IS_SKELETON)
+SYST(1982, poly61,  0, 0, poly61,  polysix, poly61_state,  empty_init, "Korg", "Poly-61 Programmable Polyphonic Synthesizer", MACHINE_IS_SKELETON)

src/mame/mame.lst

@@ -33707,6 +33707,10 @@ polyplay                        //
 polyplay2                       //
 polyplay2c                      //
 
+@source:polysix.cpp
+polysix                         //
+poly61                          //
+
 @source:pong.cpp
 breakout                        // (c) 1976 Atari
 pong                            // (c) 1972 Atari

src/mame/mess.flt

@@ -688,6 +688,7 @@ pokemini.cpp
 poly.cpp
 poly88.cpp
 poly880.cpp
+polysix.cpp
 powerstack.cpp
 pp.cpp
 pp01.cpp