yamaha/ympcs30.cpp: Added skeletop driver for Yamaha PCS-30 (#11223)

New systems marked not working
--------------
Yamaha PCS-30 [Edward d-tech]

src/mame/mame.lst

@@ -45356,6 +45356,9 @@ mu50                            // 1995 MU-50
 @source:yamaha/ymmu80.cpp
 mu80                            // 1994 MU-80
 
+@source:yamaha/ympcs30.cpp
+pcs30                           // 1984
+
 @source:yamaha/ympsr16.cpp
 psr16                           // 1988 PSR-16
 psr36                           // 1988 PSR-36

src/mame/yamaha/ympcs30.cpp

@@ -0,0 +1,66 @@
+// license:BSD-3-Clause
+// copyright-holders:Devin Acker
+
+/*
+
+	Skeleton driver for Yamaha PortaSound PCS-30 keyboard with Playcard support
+
+	CPU: Toshiba TMPZ84C00P (Z80 clone)
+	Sound: Yamaha YM2142 (GE8)
+	Other: Yamaha YM3514 (64 pins)
+
+*/
+
+#include "emu.h"
+
+#include "cpu/z80/z80.h"
+#include "speaker.h"
+
+namespace {
+
+class pcs30_state : public driver_device
+{
+public:
+	pcs30_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+	{ }
+
+	void pcs30(machine_config &config);
+
+private:
+	void pcs30_map(address_map &map);
+
+	required_device<z80_device> m_maincpu;
+};
+
+
+void pcs30_state::pcs30_map(address_map &map)
+{
+	map(0x0000, 0x7fff).rom();
+	map(0x8000, 0x87ff).ram();
+}
+
+
+void pcs30_state::pcs30(machine_config &config)
+{
+	Z80(config, m_maincpu, 4'000'000); // TODO: verify clock
+	m_maincpu->set_addrmap(AS_PROGRAM, &pcs30_state::pcs30_map);
+
+	SPEAKER(config, "speaker").front_center();
+}
+
+
+INPUT_PORTS_START(pcs30)
+INPUT_PORTS_END
+
+
+ROM_START( pcs30 )
+	ROM_REGION( 0x8000, "maincpu", 0 )
+	ROM_LOAD( "pcs30.bin", 0x0000, 0x8000, CRC(d63bc611) SHA1(7ad9c200ec4ea586efe1e9e5b5ad9bc8ca03407d)) // YM2211-22712
+ROM_END
+
+} // anonymous namespace
+
+//    YEAR  NAME     PARENT  COMPAT  MACHINE  INPUT   CLASS        INIT         COMPANY   FULLNAME  FLAGS
+SYST( 1984, pcs30,   0,      0,      pcs30,   pcs30,  pcs30_state, empty_init,  "Yamaha", "PCS-30", MACHINE_IS_SKELETON )