New machines marked as NOT_WORKING

----------------------------------
Human Designed Systems HDS200 [Bitsavers]

scripts/target/mame/mess.lua

@@ -1283,6 +1283,7 @@ function linkProjects_mame_mess(_target, _subtarget)
 		"grundy",
 		"h01x",
 		"hartung",
+		"hds",
 		"heathkit",
 		"hec2hrp",
 		"hegener",
@@ -2569,6 +2570,11 @@ files {
 	MAME_DIR .. "src/mame/drivers/gmaster.cpp",
 }
 
+createMESSProjects(_target, _subtarget, "hds")
+files {
+	MAME_DIR .. "src/mame/drivers/hds200.cpp",
+}
+
 createMESSProjects(_target, _subtarget, "heathkit")
 files {
 	MAME_DIR .. "src/mame/drivers/et3400.cpp",

src/emu/xtal.cpp

@@ -327,6 +327,7 @@ const double XTAL::known_xtals[] = {
 	 22'464'000, /* 22.464_MHz_XTAL        CIT-101 132-column display clock */
 	 22'579'000, /* 22.579_MHz_XTAL        Sega System H1 SCSP clock */
 	 22'656'000, /* 22.656_MHz_XTAL        Super Pinball Action (~1440x NTSC line rate) */
+	 22'680'000, /* 22.680_MHz_XTAL        HDS200 80-columns display clock */
 	 22'896'000, /* 22.896_MHz_XTAL        DEC VT220 132-column display clock */
 	 23'200'000, /* 23.2_MHz_XTAL          Roland JV-80 & JV-880 PCM clock */
 	 23'814'000, /* 23.814_MHz_XTAL        TeleVideo TVI-912, 920 & 950 */
@@ -402,6 +403,7 @@ const double XTAL::known_xtals[] = {
 	 34'000'000, /* 34_MHz_XTAL            Gaelco PCBs */
 	 34'291'712, /* 34.291712_MHz_XTAL     Fairlight CMI master card */
 	 34'846'000, /* 34.846_MHz_XTAL        Visual 550 */
+	 35'640'000, /* 35.640_MHz_XTAL        HDS200 132-column display clock */
 	 35'834'400, /* 35.8344_MHz_XTAL       Tab Products E-22 132-column display clock */
 	 35'840'000, /* 35.84_MHz_XTAL         Akai MPC 60 voice PCB */
 	 35'904'000, /* 35.904_MHz_XTAL        Used on HP98543 graphics board */

src/mame/drivers/hds200.cpp

@@ -0,0 +1,176 @@
+// license: BSD-3-Clause
+// copyright-holders: Dirk Best
+/***************************************************************************
+
+    Human Designed Systems HDS200
+
+    ANSI/DEC-compatbile terminal
+
+    Hardware:
+    - Z80A (Z8400APS)
+    - Z80A DMA (Z8410APS)
+    - 2x SCN2681A
+    - SCN2674B
+    - 2x TMM2016BP-90 (2k)
+    - 1x TMM2016AP-10 (2k)
+    - MK48Z02B-25 (2k)
+	- XTAL 3.6864 MHz (next go DUARTs)
+	- XTAL 8 MHz (CPU)
+	- XTAL 22.680 MHz and 35.640 MHz (video)
+
+    TODO:
+    - Everything
+
+    Notes:
+    - 
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/mc68681.h"
+#include "machine/z80dma.h"
+#include "machine/nvram.h"
+#include "video/scn2674.h"
+#include "emupal.h"
+#include "screen.h"
+
+
+namespace {
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+class hds200_state : public driver_device
+{
+public:
+	hds200_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_avdc(*this, "avdc")
+	{ }
+
+	void hds200(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+
+private:
+	void mem_map(address_map &map);
+	void io_map(address_map &map);
+
+	required_device<z80_device> m_maincpu;
+	required_device<screen_device> m_screen;
+	required_device<scn2674_device> m_avdc;
+};
+
+
+//**************************************************************************
+//  ADDRESS MAPS
+//**************************************************************************
+
+void hds200_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x5fff).rom().region("maincpu", 0);
+	map(0x6000, 0x7fff).ram();
+	map(0x8000, 0x9fff).ram();
+	map(0xa000, 0xbfff).ram();
+}
+
+void hds200_state::io_map(address_map &map)
+{
+	map.global_mask(0xff);
+	map(0x60, 0x67).rw(m_avdc, FUNC(scn2674_device::read), FUNC(scn2674_device::write));
+}
+
+
+//**************************************************************************
+//  VIDEO EMULATION
+//**************************************************************************
+
+static const gfx_layout char_layout =
+{
+	8,16,
+	RGN_FRAC(1,1),
+	1,
+	{ 0 },
+	{ STEP8(0,1) },
+	{ STEP16(0,8) },
+	8*16
+};
+
+static GFXDECODE_START(chars)
+	GFXDECODE_ENTRY("chargen", 0, char_layout, 0, 1)
+GFXDECODE_END
+
+
+//**************************************************************************
+//  MACHINE EMULATION
+//**************************************************************************
+
+void hds200_state::machine_start()
+{
+}
+
+
+//**************************************************************************
+//  MACHINE DEFINTIONS
+//**************************************************************************
+
+void hds200_state::hds200(machine_config &config)
+{
+	Z80(config, m_maincpu, 8_MHz_XTAL / 2); // divider not verified
+	m_maincpu->set_addrmap(AS_PROGRAM, &hds200_state::mem_map);
+	m_maincpu->set_addrmap(AS_IO, &hds200_state::io_map);
+
+//  NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
+
+	Z80DMA(config, "z80dma", 8_MHz_XTAL / 2); // divider not verified
+
+	SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
+	m_screen->set_color(rgb_t::amber());
+	m_screen->set_raw(22.680_MHz_XTAL, 1008, 0, 720, 375, 0, 350); // 80-column mode
+	m_screen->set_screen_update(m_avdc, FUNC(scn2674_device::screen_update));
+
+	PALETTE(config, "palette", palette_device::MONOCHROME);
+
+	GFXDECODE(config, "gfxdecode", "palette", chars);
+
+	SCN2674(config, m_avdc, 22.680_MHz_XTAL / 9);
+	m_avdc->set_character_width(9);
+	m_avdc->set_screen("screen");
+
+	SCN2681(config, "duart1", 3.6864_MHz_XTAL);
+
+	SCN2681(config, "duart2", 3.6864_MHz_XTAL);
+}
+
+
+//**************************************************************************
+//  ROM DEFINITIONS
+//**************************************************************************
+
+ROM_START( hds200 )
+	ROM_REGION(0x8000, "maincpu", 0)
+	ROM_LOAD("u78.bin", 0x0000, 0x2000, CRC(518cfeb7) SHA1(3c214dede545a2a991fdd77311b3474b01b2123f))
+	ROM_LOAD("u79.bin", 0x2000, 0x2000, CRC(3a765c8a) SHA1(8ffb5fb07b086ac725f22c2643ecd2e061130b57))
+	ROM_LOAD("u80.bin", 0x4000, 0x2000, CRC(f72dfeeb) SHA1(7e09b8f0df8384f6b5c4d29cd59fa31f743de8b8))
+	ROM_LOAD("u81.bin", 0x6000, 0x2000, CRC(b3f430be) SHA1(dd5503de46c7f00f2e376104dff13224026f5870))
+
+	ROM_REGION(0x2000, "chargen", ROMREGION_INVERT)
+	ROM_LOAD("u56.bin", 0x0000, 0x2000, CRC(cd268bff) SHA1(42f2aa3f51ae53e5cbcb57f974e99b24bca5f56f))
+ROM_END
+
+
+} // anonymous namespace
+
+
+//**************************************************************************
+//  SYSTEM DRIVERS
+//**************************************************************************
+
+//    YEAR  NAME    PARENT   COMPAT  MACHINE  INPUT  CLASS         INIT        COMPANY         FULLNAME            FLAGS
+COMP( 198?, hds200, 0,       0,      hds200,  0,     hds200_state, empty_init, "Human Designed Systems", "HDS200", MACHINE_IS_SKELETON )

src/mame/mame.lst

@@ -16281,6 +16281,9 @@ hcastle                         // GX768 (c) 1988
 hcastlee                        // GX768 (c) 1988
 hcastlek                        // GX768 (c) 1988
 
+@source:hds200.cpp
+hds200                          // (c) Human Developed Systems
+
 @source:headonb.cpp
 blackhol
 foolrace                        // bootleg

src/mame/mess.flt

@@ -395,6 +395,7 @@ harriet.cpp
 hawk.cpp
 hazeltin.cpp
 hazl1420.cpp
+hds200.cpp
 hec2hrp.cpp
 hektor.cpp
 hhtiger.cpp