New machines marked as NOT_WORKING

----------------------------------
Kawai ACR-20 Digital Accompaniment Center [DBWBP]

scripts/target/mame/mess.lua

@@ -2817,6 +2817,7 @@ files {
 
 createMESSProjects(_target, _subtarget, "kawai")
 files {
+	MAME_DIR .. "src/mame/drivers/kawai_acr20.cpp",
 	MAME_DIR .. "src/mame/drivers/kawai_k1.cpp",
 	MAME_DIR .. "src/mame/drivers/kawai_k4.cpp",
 	MAME_DIR .. "src/mame/drivers/kawai_k5.cpp",

src/mame/drivers/kawai_acr20.cpp

@@ -0,0 +1,60 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/****************************************************************************
+
+    Skeleton driver for Kawai ACR-20 Digital Accompaniment Center.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/tlcs900/tmp96c141.h"
+
+namespace {
+
+class acr20_state : public driver_device
+{
+public:
+	acr20_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+	{
+	}
+
+	void acr20(machine_config &config);
+
+private:
+	void mem_map(address_map &map);
+
+	required_device<tmp96c141_device> m_maincpu;
+};
+
+
+void acr20_state::mem_map(address_map &map)
+{
+	map(0x000000, 0x01ffff).rom().region("firmware", 0);
+	map(0x400000, 0x4017ff).ram();
+	map(0x402000, 0x402067).ram();
+	map(0x800000, 0x800000).lr8(NAME([] { return 0x80; }));
+	map(0x880000, 0x880043).nopw();
+	map(0x89fe00, 0x89ffff).ram();
+}
+
+
+static INPUT_PORTS_START(acr20)
+INPUT_PORTS_END
+
+void acr20_state::acr20(machine_config &config)
+{
+	TMP96C141(config, m_maincpu, 10'000'000); // clock unknown
+	m_maincpu->set_addrmap(AS_PROGRAM, &acr20_state::mem_map);
+}
+
+ROM_START(acr20)
+	ROM_REGION16_LE(0x20000, "firmware", 0)
+	ROM_LOAD("kp148a.bin", 0x00000, 0x20000, CRC(a73ca17b) SHA1(e0baf24a33bead76af08b1653e3034f4b5b1c888)) // TMS27C210A
+	// ROM also contains strings for DRP-10 Digital Recorder Playback
+ROM_END
+
+} // anonymous namespace
+
+SYST(199?, acr20, 0, 0, acr20, acr20, acr20_state, empty_init, "Kawai Musical Instruments Manufacturing", "ACR-20 Digital Accompaniment Center", MACHINE_IS_SKELETON)

src/mame/mame.lst

@@ -19259,6 +19259,9 @@ wndrplnt                        // (c) 1987 Data East Corporation (Japan)
 @source:kas89.cpp
 kas89                           // 1989, SFC S.R.L.
 
+@source:kawai_acr20.cpp
+acr20                           //
+
 @source:kawai_k1.cpp
 k1                              //
 k1m                             //

src/mame/mess.flt

@@ -503,6 +503,7 @@ jupiter.cpp
 k1003.cpp
 k28.cpp
 k8915.cpp
+kawai_acr20.cpp
 kawai_k1.cpp
 kawai_k4.cpp
 kawai_k5.cpp