New machines marked as NOT_WORKING

----------------------------------
LMS46-V9 [Don Maslin Vintage Computer Archive, AJR]

scripts/target/mame/mess.lua

@@ -4056,6 +4056,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/learnwin.cpp",
 	MAME_DIR .. "src/mame/drivers/lft.cpp",
 	MAME_DIR .. "src/mame/drivers/lg-dvd.cpp",
+	MAME_DIR .. "src/mame/drivers/lms46.cpp",
 	MAME_DIR .. "src/mame/drivers/lola8a.cpp",
 	MAME_DIR .. "src/mame/drivers/lilith.cpp",
 	MAME_DIR .. "src/mame/drivers/m3.cpp",

src/mame/drivers/lms46.cpp

@@ -0,0 +1,112 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/******************************************************************************
+
+    Skeleton driver for Litek LMS46 SBC.
+
+    No additional information is known about this system.
+
+******************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/msm5832.h"
+
+class lms46_state : public driver_device
+{
+public:
+	lms46_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_rtc(*this, "rtc")
+	{
+	}
+
+	void lms46(machine_config &mconfig);
+
+private:
+	u8 rtc_r(offs_t offset);
+	void rtc_w(offs_t offset, u8 data);
+	u8 busy_r();
+	void misc_control_w(u8 data);
+
+	void mem_map(address_map &map);
+	void io_map(address_map &map);
+
+	required_device<cpu_device> m_maincpu;
+	required_device<msm5832_device> m_rtc;
+};
+
+
+u8 lms46_state::rtc_r(offs_t offset)
+{
+	m_rtc->cs_w(1);
+	m_rtc->read_w(1);
+	m_rtc->address_w(offset);
+	u8 data = m_rtc->data_r();
+	m_rtc->read_w(0);
+	m_rtc->cs_w(0);
+	return data;
+}
+
+void lms46_state::rtc_w(offs_t offset, u8 data)
+{
+	m_rtc->cs_w(1);
+	m_rtc->address_w(offset);
+	m_rtc->data_w(data & 0x0f);
+	m_rtc->write_w(1);
+	m_rtc->write_w(0);
+	m_rtc->cs_w(0);
+}
+
+u8 lms46_state::busy_r()
+{
+	// Code loops endlessly until bit 0 clears
+	return 0;
+}
+
+void lms46_state::misc_control_w(u8 data)
+{
+	m_rtc->hold_w(BIT(data, 5));
+}
+
+void lms46_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x3fff).rom().region("bios", 0).nopw();
+	map(0x8000, 0x87ff).ram(); // possibly NVRAM
+	map(0x8800, 0x8fff).ram();
+}
+
+void lms46_state::io_map(address_map &map)
+{
+	map.global_mask(0xff);
+	map(0x00, 0x0f).rw(FUNC(lms46_state::rtc_r), FUNC(lms46_state::rtc_w));
+	map(0x10, 0x10).r(FUNC(lms46_state::busy_r));
+	map(0x20, 0x20).w(FUNC(lms46_state::misc_control_w));
+	map(0x30, 0x30).nopr(); // Watchdog reset? (value unused)
+}
+
+
+static INPUT_PORTS_START(lms46)
+INPUT_PORTS_END
+
+void lms46_state::lms46(machine_config &config)
+{
+	Z80(config, m_maincpu, 4000000);
+	m_maincpu->set_addrmap(AS_PROGRAM, &lms46_state::mem_map);
+	m_maincpu->set_addrmap(AS_IO, &lms46_state::io_map);
+
+	MSM5832(config, m_rtc, 32768);
+}
+
+
+ROM_START(lms46)
+	ROM_REGION(0x4000, "bios", 0)
+	// Original dump has been extensively hand-patched between 0000 and 00EB where bit 3 was stuck high.
+	// More single-bit errors in this area are likely, and some current guesses might be wrong.
+	// Code organization also suggests the use of two separate 8K ROMs rather than one 16K ROM.
+	ROM_LOAD("lms4002.rom", 0x0000, 0x4000, CRC(d9bc2384) SHA1(979038c53f5611bb9078d6a44e1c521093207881) BAD_DUMP)
+ROM_END
+
+
+COMP(1988, lms46, 0, 0, lms46, lms46, lms46_state, empty_init, "Litek Information Systems", "LMS46-V9", MACHINE_IS_SKELETON)

src/mame/mame.lst

@@ -18839,6 +18839,9 @@ lkageoo                         // A54 (c) 1984 Taito Corporation
 llc1                            //
 llc2                            //
 
+@source:lms46.cpp
+lms46                           //
+
 @source:lockon.cpp
 lockon                          // (c) 1986 Tatsumi
 lockonc                         // (c) 1986 Tatsumi

src/mame/mess.flt

@@ -435,6 +435,7 @@ lg-dvd.cpp
 lilith.cpp
 lisa.cpp
 llc.cpp
+lms46.cpp
 lola8a.cpp
 lviv.cpp
 lwriter.cpp