New machines marked as NOT_WORKING

----------------------------------
ChessSystem R30 [hap]

scripts/target/mame/mess.lua

@@ -4010,6 +4010,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/systel1.cpp",
 	MAME_DIR .. "src/mame/drivers/talkingbb.cpp",
 	MAME_DIR .. "src/mame/drivers/talkingfb.cpp",
+	MAME_DIR .. "src/mame/drivers/tasc.cpp",
 	MAME_DIR .. "src/mame/drivers/tavernie.cpp",
 	MAME_DIR .. "src/mame/drivers/tecnbras.cpp",
 	MAME_DIR .. "src/mame/drivers/telex274.cpp",

src/mame/drivers/tasc.cpp

@@ -0,0 +1,189 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/******************************************************************************
+
+Tasc ChessSystem
+
+R30 hardware notes:
+- ARM6 CPU(P60ARM/CG) @ 30MHz
+- 256KB ROM, 512KB program RAM, 128KB permanent RAM
+- Toshiba LCD drivers (4*T7778, T7900)
+- SB20 or SB30 "Smartboard" chessboard with piece recognition
+
+R40 hardware notes:
+- ARM6 CPU(VY86C061PSTC) @ 40MHz
+- +512KB extra RAM
+- rest same as R30
+
+Documentation for the Toshiba chips is hard to find, but similar chips exist:
+T7778 is equivalent to T6A39, T7900 is equivalent to T6A40.
+
+references:
+- https://www.schach-computer.info/wiki/index.php?title=Tasc_R30
+- https://www.schach-computer.info/wiki/index.php?title=Tasc_R40
+- https://www.schach-computer.info/wiki/index.php?title=Tasc_SmartBoard
+- https://www.miclangschach.de/index.php?n=Main.TascR30
+
+TODO:
+- everything
+
+******************************************************************************/
+
+#include "emu.h"
+#include "cpu/arm/arm.h"
+#include "machine/timer.h"
+
+
+namespace {
+
+class tasc_state : public driver_device
+{
+public:
+	tasc_state(const machine_config &mconfig, device_type type, const char *tag) :
+		driver_device(mconfig, type, tag),
+		m_maincpu(*this, "maincpu"),
+		m_rom(*this, "maincpu"),
+		m_mainram(*this, "mainram"),
+		m_disable_bootrom(*this, "disable_bootrom")
+	{ }
+
+	void tasc(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+private:
+	// devices/pointers
+	required_device<arm_cpu_device> m_maincpu;
+	required_region_ptr<u32> m_rom;
+	required_shared_ptr<u32> m_mainram;
+	required_device<timer_device> m_disable_bootrom;
+
+	void main_map(address_map &map);
+
+	bool m_bootrom_enabled;
+	TIMER_DEVICE_CALLBACK_MEMBER(disable_bootrom) { m_bootrom_enabled = false; }
+
+	// I/O handlers
+	DECLARE_READ32_MEMBER(bootrom_r);
+	DECLARE_READ32_MEMBER(p1000_r);
+	DECLARE_WRITE32_MEMBER(p1000_w);
+};
+
+void tasc_state::machine_start()
+{
+	save_item(NAME(m_bootrom_enabled));
+}
+
+void tasc_state::machine_reset()
+{
+	m_bootrom_enabled = true;
+}
+
+
+/******************************************************************************
+    I/O
+******************************************************************************/
+
+READ32_MEMBER(tasc_state::bootrom_r)
+{
+	return (m_bootrom_enabled) ? m_rom[offset] : m_mainram[offset];
+}
+
+READ32_MEMBER(tasc_state::p1000_r)
+{
+	logerror("p1000_r\n");
+
+	// disconnect bootrom from the bus after next opcode
+	if (m_bootrom_enabled && !m_disable_bootrom->enabled() && !machine().side_effects_disabled())
+		m_disable_bootrom->adjust(m_maincpu->cycles_to_attotime(5));
+
+	return 0;
+}
+
+WRITE32_MEMBER(tasc_state::p1000_w)
+{
+	// similar to risc2500 where msb is select, lsb is data
+	logerror("p1000_w: %02X %02X\n", data >> 24, data & 0xff);
+}
+
+
+
+/******************************************************************************
+    Address Maps
+******************************************************************************/
+
+void tasc_state::main_map(address_map &map)
+{
+	map(0x00000000, 0x0007ffff).ram().share("mainram");
+	map(0x00000000, 0x0000000b).r(FUNC(tasc_state::bootrom_r));
+	map(0x01000000, 0x01000003).rw(FUNC(tasc_state::p1000_r), FUNC(tasc_state::p1000_w));
+	map(0x02000000, 0x0203ffff).rom().region("maincpu", 0);
+	//map(0x03000000, 0x03003fff).ram();
+}
+
+
+
+/******************************************************************************
+    Input Ports
+******************************************************************************/
+
+static INPUT_PORTS_START( tasc )
+INPUT_PORTS_END
+
+
+
+/******************************************************************************
+    Machine Configs
+******************************************************************************/
+
+void tasc_state::tasc(machine_config &config)
+{
+	/* basic machine hardware */
+	ARM(config, m_maincpu, 30_MHz_XTAL);
+	m_maincpu->set_addrmap(AS_PROGRAM, &tasc_state::main_map);
+	m_maincpu->set_copro_type(arm_cpu_device::copro_type::VL86C020);
+	m_maincpu->set_periodic_int(FUNC(tasc_state::irq1_line_hold), attotime::from_hz(250));
+
+	TIMER(config, "disable_bootrom").configure_generic(FUNC(tasc_state::disable_bootrom));
+}
+
+
+
+/******************************************************************************
+    ROM Definitions
+******************************************************************************/
+
+#define ROM_LOAD32_WORD_BIOS(bios, name, offset, length, hash) \
+		ROMX_LOAD(name, offset, length, hash, ROM_GROUPWORD | ROM_SKIP(2) | ROM_BIOS(bios))
+
+#define ROM_LOAD32_WORD_SWAP_BIOS(bios, name, offset, length, hash) \
+		ROMX_LOAD(name, offset, length, hash, ROM_GROUPWORD | ROM_REVERSE | ROM_SKIP(2) | ROM_BIOS(bios))
+
+ROM_START( tascr30 )
+	ROM_REGION( 0x40000, "maincpu", 0 )
+	ROM_DEFAULT_BIOS("v25")
+	//ROM_SYSTEM_BIOS( 0, "v21", "System V0.31, Gideon 2.1" ) // 3-May-93, 3-Feb-93 (unreleased)
+	ROM_SYSTEM_BIOS( 0, "v22", "System V0.31, The King 2.20" ) // 3-May-93, 23-Apr-93
+	ROM_SYSTEM_BIOS( 1, "v223", "System V0.31, The King 2.23" ) // 3-May-93, 16-May-93 (unreleased)
+	ROM_SYSTEM_BIOS( 2, "v25", "System V1.01, The King 2.50" ) // 17-Mar-95, 26-Feb-95
+
+	ROM_LOAD32_WORD_BIOS(      0, "lo_22.bin",  0x00000, 0x20000, CRC(d30f81fe) SHA1(81957c7266bedec66b2c14b97008c4261bd67828) )
+	ROM_LOAD32_WORD_SWAP_BIOS( 0, "hi_22.bin",  0x00002, 0x20000, CRC(aeac3b46) SHA1(a757e0086636dfd3bf78e61cee46c7d92b39d3b9) )
+	ROM_LOAD32_WORD_BIOS(      1, "lo_223.bin", 0x00000, 0x20000, CRC(37251b1a) SHA1(4be768e861002b20ba59a18329f488dba0a0c9bf) )
+	ROM_LOAD32_WORD_SWAP_BIOS( 1, "hi_223.bin", 0x00002, 0x20000, CRC(e546be93) SHA1(943ae65cf97ec4389b9730c6006e805935333072) )
+	ROM_LOAD32_WORD_BIOS(      2, "lo_25.bin",  0x00000, 0x20000, CRC(9711c158) SHA1(87c60d2097cb437482df11916543f6ef7f18b0d3) )
+	ROM_LOAD32_WORD_SWAP_BIOS( 2, "hi_25.bin",  0x00002, 0x20000, CRC(df913abf) SHA1(1bc2ea4b6514bf9fec18f52c264f1440ba7c8c01) )
+ROM_END
+
+} // anonymous namespace
+
+
+
+/******************************************************************************
+    Drivers
+******************************************************************************/
+
+//    YEAR  NAME     PARENT CMP MACHINE  INPUT  CLASS      INIT        COMPANY, FULLNAME, FLAGS
+CONS( 1993, tascr30, 0,      0, tasc,    tasc,  tasc_state, empty_init, "Tasc", "ChessSystem R30", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_NO_SOUND )

src/mame/mame.lst

@@ -37509,6 +37509,9 @@ targeth                         // (c) 1994 - Ref 940531
 targetha                        // (c) 1994 - Ref 940531
 targeth10                       // (c) 1994 - Ref 940531
 
+@source:tasc.cpp
+tascr30
+
 @source:tasman.cpp
 dragsphr                        //
 ivorytsk                        //

src/mame/mess.flt

@@ -771,6 +771,7 @@ talkingfb.cpp
 tamag1.cpp
 tandy1t.cpp
 tandy2k.cpp
+tasc.cpp
 tavernie.cpp
 tb303.cpp
 tdv2324.cpp