skeleton/flashgun.cpp: Added a skeleton driver for Itisa Flash Gun. (#14245)

New systems marked not working
------------------------------
Flash Gun [Juan Romero, ClawGrip]

Author: clawgrip

src/mame/mame.lst

@@ -43557,6 +43557,9 @@ fc100
 @source:skeleton/fk1.cpp
 fk1
 
+@source:skeleton/flashgun.cpp
+flashgun
+
 @source:skeleton/flashvga2.cpp
 ruletamag
 

src/mame/skeleton/flashgun.cpp

@@ -0,0 +1,105 @@
+// license:BSD-3-Clause
+// copyright-holders:
+
+/***************************************************************************************************
+    Skeleton driver for ITISA Flash Gun
+
+    The game projects "clay pigeons" (really just white light spots) on a fixed Surface with a
+    painted landscape, moving them with a combination of lenses and motors, and then the player
+    shoots at them with a lightgun (there are two rifles, it's a two players game).
+
+    More info: https://www.recreativas.org/flash-gun-2404-itisa-electronics
+
+    PCB layout:
+   ______________________________________________________________________________________
+  |  _    ___________________       __________                __________    _______     |
+  | (_)  | Z8400APS Z80 CPU |      |M74LS74AP|   Xtal        |74LS259N_|   |DIPSx4|     |
+  | LED  |__________________|                    12 MHz                                 |
+ _|_      __________   __________   _______      __________   __________   __________   |
+|   |    |M74LS244P|  |M74LS74AP|  |RC555N|     |M74LS04P_|  |M74LS138P|  |M74LS74AP|   |
+|   |                                                                                   |
+|   |     __________   __________   __________   __________   __________   __________   |
+|   |    |M74LS244P|  |M74LS245P|  |_74LS14N_|  |M74LS138P|  |74LS259N_|  |M74LS240P|   |
+|   |   ____________                                                                    |
+|___|  | EPROM     |   __________   __________   __________   __________   __________   |
+  |    |___________|  |__7406N__|  |M74LS138P|  |M74LS273P|  |ULN2803A_|  |M74LS240P|   |
+  |     ____________                                                                    |
+  |    |HM6116LP-3 |   __________   __________   __________   __________   __________   |
+  |    |___________|  |__7406N__|  |M74LS174P|  |M74LS174P|  |__7407N__|  |M74LS240P|   |
+  |                                                                                     |
+  |       __________   __________   __________   __________                             |
+  |      |__7402N__|  |__7402N__|  |__7407N__|  |__7407N__|                             |
+ _|_    ____________________                                                            |
+|   |  | AY-3-8910         |              __________                                    |
+|   |  |___________________|             |HA1366WR |                                    |
+|   |   ____________________                                                            |
+|   |  | AY-3-8910         |              __________                                    |
+|   |  |___________________|             |HA1366WR |                                    |
+|___|   ____________________                                                            |
+  |    | AY-3-8910         |              __________                                    |
+  |    |___________________|             |HA1366WR |                                    |
+  |                                  ____                                         ______|
+  |_________________________________|    |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
+
+*/
+
+#include "emu.h"
+
+#include "cpu/z80/z80.h"
+#include "sound/ay8910.h"
+
+#include "speaker.h"
+
+namespace {
+
+class flashgun_state : public driver_device
+{
+public:
+	flashgun_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_ay8910(*this, "ay%u", 1U)
+	{
+	}
+
+	void flashgun(machine_config &config);
+
+private:
+	required_device<z80_device> m_maincpu;
+	required_device_array<ay8910_device, 3> m_ay8910;
+};
+
+static INPUT_PORTS_START(flashgun)
+	PORT_START("DSW0")
+	PORT_DIPUNKNOWN_DIPLOC(0x01, 0x01, "SW0:1")
+	PORT_DIPUNKNOWN_DIPLOC(0x02, 0x02, "SW0:2")
+	PORT_DIPUNKNOWN_DIPLOC(0x04, 0x04, "SW0:3")
+	PORT_DIPUNKNOWN_DIPLOC(0x08, 0x08, "SW0:4")
+INPUT_PORTS_END
+
+void flashgun_state::flashgun(machine_config &config)
+{
+	Z80(config, m_maincpu, 12_MHz_XTAL / 4); // Guess
+
+	SPEAKER(config, "speaker").front_center();
+
+	AY8910(config, m_ay8910[0], 12_MHz_XTAL / 8); // Guess
+	m_ay8910[0]->port_a_read_callback().set_ioport("DSW0");
+	m_ay8910[0]->add_route(ALL_OUTPUTS, "speaker", 0.25);
+
+	AY8910(config, m_ay8910[1], 12_MHz_XTAL / 8); // Guess
+	m_ay8910[1]->add_route(ALL_OUTPUTS, "speaker", 0.25);
+
+	AY8910(config, m_ay8910[2], 12_MHz_XTAL / 8); // Guess
+	m_ay8910[2]->add_route(ALL_OUTPUTS, "speaker", 0.25);
+
+}
+
+ROM_START(flashgun)
+	ROM_REGION(0x2000, "maincpu", 0)
+	ROM_LOAD("2764.a4", 0x0000, 0x2000, CRC(c3a1fc10) SHA1(356a4afab196f972d9bfcec554a06ba51162068d))
+ROM_END
+
+} // anonymous namespace
+
+GAME(1986, flashgun, 0, flashgun, flashgun, flashgun_state, empty_init, ROT0, "Itisa", "Flash Gun", MACHINE_NO_SOUND | MACHINE_NOT_WORKING | MACHINE_MECHANICAL)