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// license:BSD-3-Clause
// copyright-holders:R. Belmont
/***************************************************************************
Namco M74 board - "Shoot Away II"
Skeleton driver by R. Belmont
Main CPU: ROMless Mitsubishi M37450 rebadged as Namco C68 custom
I/O CPU: TMPZ84C011
M37450 needs on-board timers implemented to go anywhere
(see Mitsu '89 single-chip CPU databook on Bitsavers)
****************************************************************************/
#include "emu.h"
#include "cpu/z80/tmpz84c011.h"
#include "cpu/m6502/m3745x.h"
#include "sound/okim6295.h"
#include "machine/nvram.h"
#include "screen.h"
#include "speaker.h"
class m74_state : public driver_device
{
public:
m74_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_subcpu(*this, "subcpu")
{ }
virtual void machine_reset() override;
virtual void machine_start() override;
uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void m74(machine_config &config);
void c68_map(address_map &map);
void sub_map(address_map &map);
protected:
// devices
required_device<m37450_device> m_maincpu;
required_device<tmpz84c011_device> m_subcpu;
// driver_device overrides
virtual void video_start() override;
};
void m74_state::machine_reset()
{
}
void m74_state::machine_start()
{
}
void m74_state::video_start()
{
}
uint32_t m74_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
return 0;
}
ADDRESS_MAP_START(m74_state::c68_map)
AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION("maincpu", 0x0000)
ADDRESS_MAP_END
ADDRESS_MAP_START(m74_state::sub_map)
AM_RANGE(0x0000, 0x7fff) AM_ROM AM_REGION("subcpu", 0)
AM_RANGE(0x8000, 0xffff) AM_RAM
ADDRESS_MAP_END
static INPUT_PORTS_START( m74 )
INPUT_PORTS_END
MACHINE_CONFIG_START(m74_state::m74)
MCFG_CPU_ADD("maincpu", M37450, XTAL(8'000'000)) /* C68 @ 8.0MHz - main CPU */
MCFG_CPU_PROGRAM_MAP(c68_map)
MCFG_CPU_ADD("subcpu", TMPZ84C011, XTAL(12'000'000) / 3) /* Z84C011 @ 4 MHz - sub CPU */
MCFG_CPU_PROGRAM_MAP(sub_map)
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
MCFG_SCREEN_UPDATE_DRIVER(m74_state, screen_update)
MCFG_SCREEN_SIZE(320, 240)
MCFG_SCREEN_VISIBLE_AREA(0, 319, 0, 239)
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_OKIM6295_ADD("oki", XTAL(1'000'000), PIN7_HIGH)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END
ROM_START(shootaw2)
ROM_REGION(0x20000, "maincpu", 0) /* C68 / M37450 program ROM */
ROM_LOAD( "sas1_mpr0c.8l", 0x000000, 0x020000, CRC(21379550) SHA1(2f2b43ca526d1a77c80f81d0e1f22155d90f725d) )
ROM_REGION(0x80000, "subcpu", 0) /* Z84C011 program ROM */
ROM_LOAD( "sas1_spr0.7f", 0x000000, 0x080000, CRC(3bc14ba3) SHA1(7a75281621f23107c5c3c1a09831be2f8bb93540) )
ROM_REGION(0x2000, "at28c64", 0) /* AT28C64 parallel EEPROM (not yet supported by MAME) */
ROM_LOAD( "m28c64a.9l", 0x000000, 0x002000, CRC(d65d4176) SHA1(dd9b529a729685f9535ae7f060f67d75d70d9567) )
ROM_REGION(0x40000, "oki", 0)
ROM_LOAD( "unknown_label.5e", 0x000000, 0x040000, CRC(fa75e91e) SHA1(d06ca906135a3f23c1f0dadff75f940ea7ca0e4a) )
ROM_END
GAME( 1996, shootaw2, 0, m74, m74, m74_state, 0, ROT0, "Namco", "Shoot Away II", MACHINE_NOT_WORKING )
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