New machines marked as NOT_WORKING

----------------------------------
Visual 550 [Al Kossow]

scripts/target/mame/mess.lua

@@ -3432,6 +3432,7 @@ createMESSProjects(_target, _subtarget, "visual")
 files {
 	MAME_DIR .. "src/mame/drivers/v100.cpp",
 	MAME_DIR .. "src/mame/drivers/v102.cpp",
+	MAME_DIR .. "src/mame/drivers/v550.cpp",
 	MAME_DIR .. "src/mame/drivers/v1050.cpp",
 	MAME_DIR .. "src/mame/includes/v1050.h",
 	MAME_DIR .. "src/mame/machine/v1050kb.cpp",

src/mame/drivers/v550.cpp

@@ -0,0 +1,128 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/***********************************************************************************************************************************
+
+    The Visual 500 and 550 are the graphical members of the third series of display terminals released by Visual Technology.
+    While they appear to use the same character generators as the text-mode-only Visual 300 and 330 and have similar detachable
+    keyboards, they uniquely feature high-definition green-screen (P39 phosphor) monitors and support Tektronix 4010/4014-
+    compatible graphics at a resolution of 768 x 555 pixels.
+
+    The VT100-compatible Visual 550 was released first, and conforms to the ANSI X3.64 standard (like the Visual 300).
+    The Visual 500 instead emulates the ADM3A, D200, Hazeltine 1500 and VT52 terminals (like the Visual 330).
+
+***********************************************************************************************************************************/
+
+#include "emu.h"
+//include "bus/rs232/rs232.h"
+#include "cpu/z80/z80.h"
+//#include "machine/com8116.h"
+#include "machine/nvram.h"
+#include "machine/i8251.h"
+#include "machine/i8255.h"
+#include "machine/z80sio.h"
+#include "video/scn2674.h"
+#include "video/upd7220.h"
+#include "screen.h"
+
+class v550_state : public driver_device
+{
+public:
+	v550_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_screen(*this, "screen")
+		, m_chargen(*this, "chargen")
+	{ }
+
+	void v550(machine_config &config);
+
+	u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { return 0; }
+private:
+	void mem_map(address_map &map);
+	void io_map(address_map &map);
+
+	virtual void machine_start() override;
+
+	required_device<cpu_device> m_maincpu;
+	required_device<screen_device> m_screen;
+	required_region_ptr<u8> m_chargen;
+};
+
+
+void v550_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x7bff).rom().region("maincpu", 0);
+	map(0x7c00, 0x7fff).ram().share("nvram"); // actually 4 bits wide
+	map(0x8000, 0x87ff).ram();
+}
+
+void v550_state::io_map(address_map &map)
+{
+	map.global_mask(0xff);
+	map(0x00, 0x01).rw("gdc", FUNC(upd7220_device::read), FUNC(upd7220_device::write));
+	map(0x20, 0x23).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write));
+	map(0x30, 0x30).rw("usart", FUNC(i8251_device::data_r), FUNC(i8251_device::data_w));
+	map(0x31, 0x31).rw("usart", FUNC(i8251_device::status_r), FUNC(i8251_device::control_w));
+	map(0x40, 0x40).rw("mpsc", FUNC(upd7201_new_device::da_r), FUNC(upd7201_new_device::da_w));
+	map(0x41, 0x41).rw("mpsc", FUNC(upd7201_new_device::ca_r), FUNC(upd7201_new_device::ca_w));
+	map(0x48, 0x48).rw("mpsc", FUNC(upd7201_new_device::db_r), FUNC(upd7201_new_device::db_w));
+	map(0x49, 0x49).rw("mpsc", FUNC(upd7201_new_device::cb_r), FUNC(upd7201_new_device::cb_w));
+	map(0x60, 0x67).rw("pvtc", FUNC(scn2672_device::read), FUNC(scn2672_device::write));
+	map(0x70, 0x70).nopw(); // DRAM refresh address?
+}
+
+
+INPUT_PORTS_START(v550)
+INPUT_PORTS_END
+
+
+void v550_state::machine_start()
+{
+	subdevice<i8251_device>("usart")->write_cts(0);
+}
+
+MACHINE_CONFIG_START(v550_state::v550)
+	MCFG_DEVICE_ADD("maincpu", Z80, 4'000'000) // NEC D780C
+	MCFG_DEVICE_PROGRAM_MAP(mem_map)
+	MCFG_DEVICE_IO_MAP(io_map)
+
+	MCFG_NVRAM_ADD_0FILL("nvram") // NEC D446-2 + battery
+
+	MCFG_DEVICE_ADD("gdc", UPD7220, 4'000'000) // NEC D7220D
+	MCFG_VIDEO_SET_SCREEN("screen")
+
+	MCFG_DEVICE_ADD("ppi", I8255, 0) // NEC D8255AC-5
+
+	MCFG_DEVICE_ADD("usart", I8251, 4'000'000) // NEC D8251AC
+
+	MCFG_DEVICE_ADD("mpsc", UPD7201_NEW, 4'000'000) // NEC D7201C
+	MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
+
+	//MCFG_DEVICE_ADD("brg1", COM8116_020, 5068800)
+	//MCFG_DEVICE_ADD("brg2", COM8116_020, 5068800)
+
+	MCFG_SCREEN_ADD("screen", RASTER)
+	MCFG_SCREEN_RAW_PARAMS(16'248'600, 918, 0, 720, 295, 0, 272)
+	MCFG_SCREEN_UPDATE_DRIVER(v550_state, screen_update)
+
+	MCFG_DEVICE_ADD("pvtc", SCN2672, 1'805'400)
+	MCFG_SCN2672_CHARACTER_WIDTH(9)
+	MCFG_SCN2672_INTR_CALLBACK(INPUTLINE("maincpu", INPUT_LINE_NMI))
+	MCFG_VIDEO_SET_SCREEN("screen")
+MACHINE_CONFIG_END
+
+
+ROM_START( v550 )
+	// Silkscreened on bottom left of PCB: "PA016-A REV B"
+
+	ROM_REGION(0x8000, "maincpu", 0)
+	ROM_LOAD("e244-001_r07_u42.bin", 0x0000, 0x2000, CRC(d18a8b62) SHA1(7faf8a9f1ae3148adacbff960a2663793710cef2))
+	ROM_LOAD("e244-002_r07_u43.bin", 0x2000, 0x2000, CRC(1b62db47) SHA1(7ad69aea6088545d843c2e95737895f81c269ccc))
+	ROM_LOAD("e244-003_r07_u44.bin", 0x4000, 0x2000, CRC(f6d6f734) SHA1(a9efa8ebe86addb77872dbe9863ea7f75b33a2b9))
+	ROM_LOAD("e244-017_r07_u45.bin", 0x6000, 0x2000, CRC(b0dcd535) SHA1(9237723d01a720217f50f756bb55c7e5ed05a594))
+
+	ROM_REGION(0x1000, "chargen", 0)
+	ROM_LOAD("e242-085_r03_u97.bin", 0x0000, 0x1000, CRC(8a491cee) SHA1(d8a9546a7dd2ffc0a5e54524ee16068dde56975c))
+ROM_END
+
+COMP( 1982, v550, 0, 0, v550, v550, v550_state, empty_init, "Visual Technology", "Visual 550", MACHINE_IS_SKELETON )

src/mame/mame.lst

@@ -37808,6 +37808,9 @@ v100                            //
 @source:v102.cpp
 v102                            //
 
+@source:v550.cpp
+v550                            //
+
 @source:v1050.cpp
 v1050                           //
 

src/mame/mess.flt

@@ -750,6 +750,7 @@ ut88.cpp
 uzebox.cpp
 v100.cpp
 v102.cpp
+v550.cpp
 v1050.cpp
 v6809.cpp
 vax11.cpp