New machines marked as NOT_WORKING (#7801)

* New machines marked as NOT_WORKING
----------------------------------
PlayCenter Champions Tournament (v9.3) [Recreativas.org]

scripts/target/mame/arcade.lua

@@ -5042,6 +5042,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/photoplysx.cpp",
 	MAME_DIR .. "src/mame/drivers/pipeline.cpp",
 	MAME_DIR .. "src/mame/drivers/pkscram.cpp",
+	MAME_DIR .. "src/mame/drivers/playcenter.cpp",
 	MAME_DIR .. "src/mame/drivers/pntnpuzl.cpp",
 	MAME_DIR .. "src/mame/drivers/policetr.cpp",
 	MAME_DIR .. "src/mame/includes/policetr.h",

src/mame/arcade.flt

@@ -970,6 +970,7 @@ playmark.cpp
 play_1.cpp
 play_2.cpp
 play_3.cpp
+playcenter.cpp
 pluto5.cpp
 plygonet.cpp
 pntnpuzl.cpp

src/mame/drivers/playcenter.cpp

@@ -0,0 +1,82 @@
+// license:BSD-3-Clause
+// copyright-holders:
+/*******************************************************************************
+
+    Skeleton driver for "PlayCenter" PC-based touch games
+
+    Hardware overview for "PlayCenter Champions Tournament":
+    Motherboard: EPoX EP-MVP4F
+    Unknown RAM size, AMD K6 processor (unknown speed)
+    PCI Ethernet card (unknown chipset)
+
+    The security scheme is quite simple: 
+    Each minigame is a VisualBasic executable that receives three numbers when
+    invoked, the hard disk serial number (readed through the Windows enumerator
+    file), the Ethernet MAC address, and a third one, and concatenates them
+    moving some bits around.
+    Then, calls the security board via RS-232 (it's a simple PCB with a PIC and
+    a serial port), getting another number (the PIC always returns the same
+    number, there are no states or logic).
+    Finally, the game compares both numbers with a simple formula, refusing to
+    work if there's a mismatch.
+    Since the security involves hardware unique serial numbers, each PIC program
+    is unique for each single machine (and these hardware parts are not
+    replaceble by the user / operator).
+
+*******************************************************************************/
+
+#include "emu.h"
+#include "cpu/i386/i386.h"
+#include "speaker.h"
+
+namespace {
+
+class playcenter_state : public driver_device
+{
+public:
+	playcenter_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+	{
+	}
+
+	void playcenter(machine_config &config);
+
+private:
+	void mem_map(address_map &map);
+	void io_map(address_map &map);
+
+	required_device<cpu_device> m_maincpu;
+};
+
+void playcenter_state::mem_map(address_map &map)
+{
+	map(0x00000000, 0x0009ffff).ram();
+	map(0xfffc0000, 0xffffffff).rom().region("mb_bios", 0);
+}
+
+void playcenter_state::io_map(address_map &map)
+{
+}
+
+static INPUT_PORTS_START(playcenter)
+INPUT_PORTS_END
+
+void playcenter_state::playcenter(machine_config &config)
+{
+	PENTIUM(config, m_maincpu, 166'000'000); // Actually an AMD K6, frequency unknown
+	m_maincpu->set_addrmap(AS_PROGRAM, &playcenter_state::mem_map);
+	m_maincpu->set_addrmap(AS_IO, &playcenter_state::io_map);
+}
+
+ROM_START(plycntrchtr)
+	ROM_REGION32_LE(0x40000, "mb_bios", 0) // Bios date: 03/13/2001
+	ROM_LOAD("vp4f1313.bin", 0x00000, 0x40000, CRC(bd4b155f) SHA1(3eafe71e89bf84b72a42e933187676fe08db0492))
+
+	DISK_REGION( "ide:0:hdd:image" )
+	DISK_IMAGE("playcenter_epox_9.3_tournament", 0, SHA1(64a88d4ab10d82ba0bd175511242ba6771cfc5ce))
+ROM_END
+
+} // Anonymous namespace
+
+GAME(2000, plycntrchtr, 0, playcenter, playcenter, playcenter_state, empty_init, ROT0, "Recreativos Presas / Undergaming", "PlayCenter Champions Tournament (v9.3)", MACHINE_IS_SKELETON)

src/mame/mame.lst

@@ -34623,6 +34623,9 @@ theraida                        // (c) 1984 Playmatic / EFOSA
 trailer                         //
 ufo_x                           //
 
+@source:playcenter.cpp
+plycntrchtr                     // (c) 2000 Recreativos Presas / Undergaming
+
 @source:playch10.cpp
 pc_1942                         // (c) 1985 Capcom
 pc_bball                        // (c) 1984 Nintendo of America