New machines marked as NOT_WORKING

----------------------------------
MCS-51 System Design Kit [Glen Slick]

scripts/target/mame/mess.lua

@@ -2292,6 +2292,7 @@ files {
 	MAME_DIR .. "src/mame/machine/isbc_208.cpp",
 	MAME_DIR .. "src/mame/machine/isbc_208.h",
 	MAME_DIR .. "src/mame/drivers/rex6000.cpp",
+	MAME_DIR .. "src/mame/drivers/sdk51.cpp",
 	MAME_DIR .. "src/mame/drivers/sdk80.cpp",
 	MAME_DIR .. "src/mame/drivers/sdk85.cpp",
 	MAME_DIR .. "src/mame/drivers/sdk86.cpp",

src/mame/drivers/sdk51.cpp

@@ -0,0 +1,185 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/*******************************************************************************
+
+    Skeleton driver for Intel MCS-51 System Design Kit (SDK-51).
+
+*******************************************************************************/
+
+#include "emu.h"
+#include "bus/rs232/rs232.h"
+#include "cpu/mcs51/mcs51.h"
+#include "cpu/mcs48/mcs48.h"
+//#include "imagedev/cassette.h"
+#include "machine/bankdev.h"
+#include "machine/i8155.h"
+#include "machine/i8243.h"
+#include "machine/i8251.h"
+
+class sdk51_state : public driver_device
+{
+public:
+	sdk51_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_progmem(*this, "progmem")
+		, m_datamem(*this, "datamem")
+		, m_mem0(*this, "mem0")
+		, m_usart(*this, "usart")
+		, m_cycles(*this, "cycles")
+	{
+	}
+
+	void sdk51(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+private:
+	void psen_map(address_map &map);
+	void movx_map(address_map &map);
+	void progmem_map(address_map &map);
+	void datamem_map(address_map &map);
+	void mem0_map(address_map &map);
+
+	DECLARE_READ8_MEMBER(psen_r);
+	DECLARE_READ8_MEMBER(datamem_r);
+	DECLARE_WRITE8_MEMBER(datamem_w);
+
+	u8 brkmem_r(offs_t offset);
+	void brkmem_w(offs_t offset, u8 data);
+
+	required_device<mcs51_cpu_device> m_maincpu;
+	required_device<address_map_bank_device> m_progmem;
+	required_device<address_map_bank_device> m_datamem;
+	required_device<address_map_bank_device> m_mem0;
+	required_device<i8251_device> m_usart;
+	required_region_ptr<u8> m_cycles;
+};
+
+READ8_MEMBER(sdk51_state::psen_r)
+{
+	return m_progmem->read8(space, offset);
+}
+
+READ8_MEMBER(sdk51_state::datamem_r)
+{
+	return m_datamem->read8(space, offset);
+}
+
+WRITE8_MEMBER(sdk51_state::datamem_w)
+{
+	m_datamem->write8(space, offset, data);
+}
+
+u8 sdk51_state::brkmem_r(offs_t offset)
+{
+	return 0;
+}
+
+void sdk51_state::brkmem_w(offs_t offset, u8 data)
+{
+	m_mem0->set_bank(0);
+}
+
+void sdk51_state::psen_map(address_map &map)
+{
+	map(0x0000, 0xffff).r(FUNC(sdk51_state::psen_r));
+}
+
+void sdk51_state::movx_map(address_map &map)
+{
+	map(0x0000, 0xffff).rw(FUNC(sdk51_state::datamem_r), FUNC(sdk51_state::datamem_w));
+}
+
+void sdk51_state::progmem_map(address_map &map)
+{
+	map(0x0000, 0x1fff).m(m_mem0, FUNC(address_map_bank_device::amap8));
+	map(0x2000, 0x3fff).ram();
+	map(0xe000, 0xffff).rom().region("monitor", 0);
+}
+
+void sdk51_state::datamem_map(address_map &map)
+{
+	progmem_map(map);
+	map(0xa000, 0xa001).mirror(0xffe).rw("upi", FUNC(upi41_cpu_device::upi41_master_r), FUNC(upi41_cpu_device::upi41_master_w));
+	map(0xb000, 0xb0ff).mirror(0x700).rw("io", FUNC(i8155_device::memory_r), FUNC(i8155_device::memory_w));
+	map(0xb800, 0xb807).mirror(0x7f8).rw("io", FUNC(i8155_device::io_r), FUNC(i8155_device::io_w));
+	map(0xc000, 0xdfff).rw(FUNC(sdk51_state::brkmem_r), FUNC(sdk51_state::brkmem_w));
+}
+
+void sdk51_state::mem0_map(address_map &map)
+{
+	map(0x0000, 0x1fff).ram();
+	map(0x2000, 0x2fff).mirror(0x1000).rom().region("monitor", 0);
+}
+
+static INPUT_PORTS_START(sdk51)
+INPUT_PORTS_END
+
+void sdk51_state::machine_start()
+{
+}
+
+void sdk51_state::machine_reset()
+{
+	m_mem0->set_bank(1);
+}
+
+void sdk51_state::sdk51(machine_config &config)
+{
+	I8031(config, m_maincpu, 12_MHz_XTAL);
+	m_maincpu->set_addrmap(AS_PROGRAM, &sdk51_state::psen_map);
+	m_maincpu->set_addrmap(AS_IO, &sdk51_state::movx_map);
+
+	ADDRESS_MAP_BANK(config, m_progmem);
+	m_progmem->set_addrmap(0, &sdk51_state::progmem_map);
+	m_progmem->set_data_width(8);
+	m_progmem->set_addr_width(16);
+
+	ADDRESS_MAP_BANK(config, m_datamem);
+	m_datamem->set_addrmap(0, &sdk51_state::datamem_map);
+	m_datamem->set_data_width(8);
+	m_datamem->set_addr_width(16);
+
+	ADDRESS_MAP_BANK(config, m_mem0);
+	m_mem0->set_addrmap(0, &sdk51_state::mem0_map);
+	m_mem0->set_data_width(8);
+	m_mem0->set_addr_width(14);
+	m_mem0->set_stride(0x2000);
+
+	upi41_cpu_device &upi(I8041(config, "upi", 6_MHz_XTAL));
+	upi.p2_in_cb().set("upiexp", FUNC(i8243_device::p2_r));
+	upi.p2_out_cb().set("upiexp", FUNC(i8243_device::p2_w));
+	upi.prog_out_cb().set("upiexp", FUNC(i8243_device::prog_w));
+	upi.t1_in_cb().set(m_usart, FUNC(i8251_device::txrdy_r));
+
+	I8243(config, "upiexp");
+
+	i8155_device &io(I8155(config, "io", 6_MHz_XTAL / 3));
+	io.out_to_callback().set(m_usart, FUNC(i8251_device::write_txc));
+	io.out_to_callback().append(m_usart, FUNC(i8251_device::write_txc));
+
+	I8251(config, m_usart, 6_MHz_XTAL / 3);
+	m_usart->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
+	m_usart->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
+
+	rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr));
+	rs232.rxd_handler().set(m_usart, FUNC(i8251_device::write_rxd));
+	rs232.cts_handler().set(m_usart, FUNC(i8251_device::write_cts));
+}
+
+ROM_START(sdk51)
+	ROM_REGION(0x2000, "monitor", 0) // "SDK-51 MONITOR VER. 1.03"
+	ROM_LOAD("u59-e000.bin", 0x0000, 0x1000, CRC(cc6c7b05) SHA1(ead75920347ff19487e730e90e1e1f7207d44601))
+	ROM_LOAD("u60-f000.bin", 0x1000, 0x1000, CRC(da6e664d) SHA1(18416106307f37dba6dbb789f3d39fe6d5294755))
+
+	ROM_REGION(0x0400, "upi", 0)
+	ROM_LOAD("u41-8041a.bin", 0x000, 0x400, CRC(02f38b69) SHA1(ab2ac73b69b3297572583242ed5bd717eb116c37))
+
+	ROM_REGION(0x0200, "cycles", 0)
+	ROM_LOAD("u63-3622a.bin", 0x000, 0x200, CRC(85cbd498) SHA1(f0214b6d02d6d153b5fafd9adf5a23013373c9c4))
+ROM_END
+
+COMP(1981, sdk51, 0, 0, sdk51, sdk51, sdk51_state, empty_init, "Intel", "MCS-51 System Design Kit", MACHINE_IS_SKELETON)

src/mame/mame.lst

@@ -33865,6 +33865,9 @@ spacewin                        //
 @source:sderby2.cpp
 sderby2                         // (c) 1985
 
+@source:sdk51.cpp
+sdk51                           //
+
 @source:sdk80.cpp
 sdk80                           //
 

src/mame/mess.flt

@@ -636,6 +636,7 @@ sc2.cpp
 scopus.cpp
 scorpion.cpp
 scv.cpp
+sdk51.cpp
 sdk80.cpp
 sdk85.cpp
 sdk86.cpp