New machines machines marked as NOT_WORKING

----------------------------------
TeleVideo 924 Video Display Terminal [Bitsavers]

scripts/target/mame/mess.lua

@@ -3565,6 +3565,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/ts816.cpp",
 	MAME_DIR .. "src/mame/drivers/tv910.cpp",
 	MAME_DIR .. "src/mame/drivers/tv912.cpp",
+	MAME_DIR .. "src/mame/drivers/tv924.cpp",
 	MAME_DIR .. "src/mame/drivers/tv950.cpp",
 	MAME_DIR .. "src/mame/drivers/tv955.cpp",
 	MAME_DIR .. "src/mame/drivers/tv965.cpp",

src/mame/drivers/tv924.cpp

@@ -0,0 +1,92 @@
+// license:BSD-3-Clause
+// copyright-holders:AJR
+/****************************************************************************
+
+    Skeleton driver for TeleVideo Model 924 terminal.
+
+****************************************************************************/
+
+#include "emu.h"
+
+//#include "bus/rs232/rs232.h"
+#include "cpu/m6502/m6502.h"
+#include "machine/mc68681.h"
+//#include "machine/nvram.h"
+#include "video/scn2674.h"
+#include "screen.h"
+
+class tv924_state : public driver_device
+{
+public:
+	tv924_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_pvtc(*this, "pvtc")
+	{
+	}
+
+	void tv924(machine_config &config);
+
+private:
+	SCN2672_DRAW_CHARACTER_MEMBER(draw_character);
+
+	void mem_map(address_map &map);
+	void char_map(address_map &map);
+
+	required_device<cpu_device> m_maincpu;
+	required_device<scn2672_device> m_pvtc;
+};
+
+SCN2672_DRAW_CHARACTER_MEMBER(tv924_state::draw_character)
+{
+}
+
+void tv924_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x07ff).ram();
+	map(0x2020, 0x202f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write));
+	map(0x2030, 0x2037).rw(m_pvtc, FUNC(scn2672_device::read), FUNC(scn2672_device::write));
+	map(0x8000, 0x9fff).ram();
+	map(0xa000, 0xbfff).rom().region("program", 0x0000);
+	map(0xe000, 0xffff).rom().region("program", 0x2000);
+}
+
+void tv924_state::char_map(address_map &map)
+{
+	map(0x0000, 0x3fff).ram();
+}
+
+
+static INPUT_PORTS_START(tv924)
+INPUT_PORTS_END
+
+void tv924_state::tv924(machine_config &config)
+{
+	M6502(config, m_maincpu, 1'723'560); // R6502AP (clock guessed)
+	m_maincpu->set_addrmap(AS_PROGRAM, &tv924_state::mem_map);
+
+	scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL)); // SCN2681A
+	duart.irq_cb().set_inputline(m_maincpu, m6502_device::IRQ_LINE);
+
+	screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
+	screen.set_raw(27'576'960, 848 * 2, 0, 640 * 2, 271, 0, 250);
+	screen.set_screen_update("pvtc", FUNC(scn2672_device::screen_update));
+
+	SCN2672(config, m_pvtc, 1'723'560); // SCN2672A (with SCB2673B + AMI gate arrays 130170-00 and 130180-00)
+	m_pvtc->set_screen("screen");
+	m_pvtc->set_character_width(16); // nominally 8, but with half-dot shifting
+	m_pvtc->set_addrmap(0, &tv924_state::char_map);
+	m_pvtc->set_display_callback(FUNC(tv924_state::draw_character));
+	m_pvtc->intr_callback().set_inputline(m_maincpu, m6502_device::NMI_LINE);
+}
+
+ROM_START(tv924)
+	ROM_REGION(0x4000, "program", 0)
+	ROM_LOAD("180001-53e_924_u14_12_18_84_e.bin", 0x0000, 0x2000, CRC(9129e555) SHA1(2977f5a8153b474d1fff4bec17952562277f86a4))
+	ROM_LOAD("180001-54e_924_u21_12_18_84_e.bin", 0x2000, 0x2000, CRC(fa2cf28d) SHA1(9cb461b2ba2a7bf44467d5fbc5358c9caaa60024))
+
+	ROM_REGION(0x1000, "chargen", 0)
+	ROM_LOAD("350_rn_118_2333-5006_8000142.u10", 0x0000, 0x1000, NO_DUMP) // VTI 24-pin mask ROM
+ROM_END
+
+COMP(1984, tv924, 0, 0, tv924, tv924, tv924_state, empty_init, "TeleVideo Systems", "TeleVideo 924 Video Display Terminal", MACHINE_IS_SKELETON)

src/mame/mame.lst

@@ -39213,6 +39213,9 @@ tv910                           //
 tv912b                          //
 tv912c                          //
 
+@source:tv924.cpp
+tv924                           //
+
 @source:tv950.cpp
 tv950                           //
 

src/mame/mess.flt

@@ -895,6 +895,7 @@ tti.cpp
 tutor.cpp
 tv910.cpp
 tv912.cpp
+tv924.cpp
 tv950.cpp
 tv955.cpp
 tv965.cpp