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+// license:BSD-3-Clause
+// copyright-holders:David Haywood
+/*
+
+System Board Y2
+
+'YATA-2 ASIC : 32-bit RISC processor @ 266 MHz'
+
+This SoC looks suspiciously like the ones used for some Dreamcast derivatives, suggesting that this too
+could be a DC / Naomi based platform, but with added encryption etc.
+
+The System Board Y2 was released by SI Electronics, LTD. in 2009, The hardware was developed after Kaga
+Electronics had acquired SI Electronics from Sega Sammy in 2008. SI Electronics was also responsible
+for the Atomiswave manufacturing, again suggesting this could be DC based.
+
+The rest of the specs are quite close to DC / Naomi too.
+
+--
+
+ROMs are contained on a small sub-board
+
+*/
+
+#include "emu.h"
+#include "emupal.h"
+#include "screen.h"
+#include "speaker.h"
+
+
+namespace {
+
+class system_board_y2_state : public driver_device
+{
+public:
+ system_board_y2_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag)
+ { }
+
+ void system_board_y2(machine_config &config);
+
+protected:
+ virtual void video_start() override ATTR_COLD;
+
+private:
+ uint32_t screen_update_system_board_y2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+};
+
+void system_board_y2_state::video_start()
+{
+}
+
+uint32_t system_board_y2_state::screen_update_system_board_y2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ return 0;
+}
+
+static INPUT_PORTS_START( system_board_y2 )
+INPUT_PORTS_END
+
+
+void system_board_y2_state::system_board_y2(machine_config &config)
+{
+ /*
+ SH4(config, m_maincpu, 266666666);
+ m_maincpu->set_md(0, 1);
+ m_maincpu->set_md(1, 0);
+ m_maincpu->set_md(2, 1);
+ m_maincpu->set_md(3, 0);
+ m_maincpu->set_md(4, 0);
+ m_maincpu->set_md(5, 1);
+ m_maincpu->set_md(6, 0);
+ m_maincpu->set_md(7, 1);
+ m_maincpu->set_md(8, 0);
+ m_maincpu->set_sh4_clock(CPU_CLOCK);
+ */
+
+ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
+ screen.set_refresh_hz(60);
+ screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
+ screen.set_size(640, 480);
+ screen.set_visarea(0, 640-1, 0, 480-1);
+ screen.set_screen_update(FUNC(system_board_y2_state::screen_update_system_board_y2));
+ screen.set_palette("palette");
+
+ PALETTE(config, "palette").set_entries(0x1000);
+
+ SPEAKER(config, "mono").front_center();
+}
+
+ROM_START( kof2002um ) // The King of Fighters 复仇之路/Fùchóu zhī lù/Road to Revenge
+ ROM_REGION( 0x8000000, "boot", 0 ) // sound program only? or boot too?
+ ROM_LOAD( "s29gl01gp11fcr2.u103", 0x0000000, 0x8000000, CRC(722cbad1) SHA1(0292be12255ee4bd586166a3f5cd108c5453295b) )
+
+ ROM_REGION( 0x42000000, "nand_u101", 0 ) // presumably accessed like a filesystem (encrypted)
+ ROM_LOAD( "nand08gw3b2cn6.u101", 0x00000000, 0x42000000, CRC(ddeebb49) SHA1(6907205a0e0b69e2b37528f71647c70b4dd9e0f2) )
+ ROM_REGION( 0x42000000, "nand_u102", 0 )
+ ROM_LOAD( "nand08gw3b2cn6.u102", 0x00000000, 0x42000000, CRC(ac2dc586) SHA1(5168b4c0c6343b6c040a206da04fa7cdbc3b35b9) )
+ROM_END
+
+ROM_START( kof2002umj )
+ ROM_REGION( 0x8000000, "boot", 0 ) // sound program only? or boot too?
+ ROM_LOAD( "s29gl01gp11fcr2.u103", 0x0000000, 0x8000000, CRC(916c9d68) SHA1(65c09f75b6a71b0d79a827c6829d1c05d8699a32) )
+
+ ROM_REGION( 0x42000000, "nand_u101", 0 ) // presumably accessed like a filesystem (encrypted)
+ ROM_LOAD( "nand08gw3b2cn6.u101", 0x00000000, 0x42000000, CRC(46e03f1d) SHA1(62d8eeb7513e851bf11a26a84b5d310270f3fcf6) )
+ ROM_REGION( 0x42000000, "nand_u102", 0 )
+ ROM_LOAD( "nand08gw3b2cn6.u102", 0x00000000, 0x42000000, CRC(db931dca) SHA1(1b1fc88732944e9ede09e584c7b07e28a59df3e2) )
+ROM_END
+
+ROM_START( higurashi ) //ひぐらしの哭く頃に 雀 / Higurashi no Naku Koro ni Jong - AM-Y2 ROM_V0 PCB (also has a XILINX XC2C64A etched 0012)
+ ROM_REGION( 0x10000000, "boot", 0 )
+ ROM_LOAD( "s29gl01gp11tfcr2.u103", 0x0000000, 0x8000000, CRC(1a20bb8b) SHA1(49beb0c9d3549355b55192ba4a24e3f06b750038) )
+ ROM_LOAD( "s29gl01gp11tfcr2.u104", 0x8000000, 0x8000000, CRC(ea7a4ba4) SHA1(bd801eb4b21ee1bade906a4faa172cb7eb0fd5ac) )
+
+ ROM_REGION( 0x42000000, "nand_u101", 0 )
+ ROM_LOAD( "nand08gw3b2cn6.u101", 0x00000000, 0x42000000, CRC(a1968d7d) SHA1(53621cf9ebe6b428d56630705b16e00c14dc5be9) )
+ ROM_REGION( 0x42000000, "nand_u102", 0 )
+ ROM_LOAD( "nand08gw3b2cn6.u102", 0x00000000, 0x42000000, CRC(6ba638bb) SHA1(3f92ceb5b486787e51ea7eaaa0cf49179034210e) )
+ROM_END
+
+} // anonymous namespace
+
+
+/* The title screen shows "The King of Fighters - Road to Revenge" (Chinese / English) while the speech on the title screen announcer says "The King of Fighters 2002 Unlimited Match"
+ There is a PS2 version with the Unlimited Match title screen, but unless it's used for a different region the arcade doesn't show that title, only announces it. */
+GAME( 2009, kof2002um, 0, system_board_y2, system_board_y2, system_board_y2_state, empty_init, ROT0, "SNK Playmore / New Channel", "The King of Fighters - Fuchou Zhi Lu/Road to Revenge / The King of Fighters 2002 Unlimited Match (China)", MACHINE_NO_SOUND | MACHINE_NOT_WORKING ) // also Export?
+GAME( 2009, kof2002umj, kof2002um, system_board_y2, system_board_y2, system_board_y2_state, empty_init, ROT0, "SNK Playmore", "The King of Fighters 2002 Unlimited Match (Japan)", MACHINE_NO_SOUND | MACHINE_NOT_WORKING )
+GAME( 2009, higurashi, 0, system_board_y2, system_board_y2, system_board_y2_state, empty_init, ROT0, "AQ Interactive", "Higurashi no Naku Koro ni Jong (Japan)", MACHINE_NO_SOUND | MACHINE_NOT_WORKING )
+
+//エヌアイン完全世界/En-Eins Perfektewelt
+//上海 臥龍天昇/Shanghai Ga ryū tenshō