Add skeleton driver for Shark (US Billiards Inc.) (1975).

Add skeleton driver for Shark (US Billiards Inc.) (1975).

src/mame/drivers/usbilliards.cpp

@@ -0,0 +1,138 @@
+// license:BSD-3-Clause
+// copyright-holders:Stiletto
+/***************************************************************************
+
+ US Billiards TTL Games
+
+ Game Name                       DATA
+ -------------------------------------
+ TV Tennis (1973/03,11?)         NO
+ TV Hockey? (1973)               UNKNOWN
+ Survival (1975/02-03?)          UNKNOWN
+ Shark (1975/11)                 YES
+ Space Battle (1977/10-12?)      UNKNOWN
+ Variety TV (1978/09)            UNKNOWN
+
+ ***************************************************************************/
+
+
+#include "emu.h"
+
+#include "machine/netlist.h"
+#include "netlist/devices/net_lib.h"
+#include "video/fixfreq.h"
+
+// copied from Pong, not accurate for this driver!
+// start
+#define MASTER_CLOCK    7159000
+#define V_TOTAL         (0x105+1)       // 262
+#define H_TOTAL         (0x1C6+1)       // 454
+
+#define HBSTART                 (H_TOTAL)
+#define HBEND                   (80)
+#define VBSTART                 (V_TOTAL)
+#define VBEND                   (16)
+
+#define HRES_MULT                   (1)
+// end
+
+
+class usbilliards_state : public driver_device
+{
+public:
+	usbilliards_state(const machine_config &mconfig, device_type type, const char *tag)
+	: driver_device(mconfig, type, tag),
+		m_maincpu(*this, "maincpu"),
+		m_video(*this, "fixfreq")
+	{
+	}
+
+	// devices
+	required_device<netlist_mame_device_t> m_maincpu;
+	required_device<fixedfreq_device> m_video;
+
+protected:
+
+	// driver_device overrides
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+	virtual void video_start() override;
+
+private:
+
+};
+
+
+static NETLIST_START(usbilliards)
+	SOLVER(Solver, 48000)
+//  PARAM(Solver.FREQ, 48000)
+	PARAM(Solver.ACCURACY, 1e-4) // works and is sufficient
+
+	// schematics
+	//...
+
+		//  NETDEV_ANALOG_CALLBACK(sound_cb, sound, usbilliards_state, sound_cb, "")
+		//  NETDEV_ANALOG_CALLBACK(video_cb, videomix, fixedfreq_device, update_vid, "fixfreq")
+NETLIST_END()
+
+
+
+void usbilliards_state::machine_start()
+{
+}
+
+void usbilliards_state::machine_reset()
+{
+}
+
+
+void usbilliards_state::video_start()
+{
+}
+
+static MACHINE_CONFIG_START( usbilliards, usbilliards_state )
+
+	/* basic machine hardware */
+	MCFG_DEVICE_ADD("maincpu", NETLIST_CPU, NETLIST_CLOCK)
+	MCFG_NETLIST_SETUP(usbilliards)
+
+	/* video hardware */
+	MCFG_FIXFREQ_ADD("fixfreq", "screen")
+	MCFG_FIXFREQ_MONITOR_CLOCK(MASTER_CLOCK)
+	MCFG_FIXFREQ_HORZ_PARAMS(H_TOTAL-67,H_TOTAL-40,H_TOTAL-8,H_TOTAL)
+	MCFG_FIXFREQ_VERT_PARAMS(V_TOTAL-22,V_TOTAL-19,V_TOTAL-12,V_TOTAL)
+	MCFG_FIXFREQ_FIELDCOUNT(1)
+	MCFG_FIXFREQ_SYNC_THRESHOLD(0.30)
+MACHINE_CONFIG_END
+
+
+/***************************************************************************
+
+ Game driver(s)
+
+ ***************************************************************************/
+ 
+/*
+Shark by U.S. Billiards
+
+Etched in copper on Top		(C) 1975
+				010
+				1SCOOP J6 2SCOOP
+
+Handwritten on top		J0037
+				124
+
+empty socket at 5M	C etched in copper next to socket
+
+*/
+
+ROM_START( sharkusb )
+	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASE00 )
+
+	ROM_REGION( 0x0200, "roms", ROMREGION_ERASE00 )
+	ROM_LOAD( "82s123_b.5n",  0x0000, 0x0100, CRC(91b977b3) SHA1(37929f6049dea0ebed2c01ae20354e41c867b8f9) ) // 82s123 - handwritten B - B also etched in copper next to socket
+	ROM_LOAD( "82s123_a.6n",  0x0100, 0x0100, CRC(63f621cb) SHA1(6c6e6f22313db33afd069dae1b0180b5ccddfa56) ) // 82s123 - handwritten A - A also etched in copper next to socket
+ROM_END
+
+GAME( 1975, sharkusb,    0,       usbilliards, 0, driver_device,  0, ROT0, "US Billiards Inc.", "Shark [TTL]", MACHINE_IS_SKELETON )