/***************************************************************************
Atari Cannonball (prototype) driver
***************************************************************************/
#include "emu.h"
#include "cpu/m6800/m6800.h"
class cball_state : public driver_device
{
public:
cball_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_video_ram(*this, "video_ram")
{ }
/* memory pointers */
required_shared_ptr<UINT8> m_video_ram;
/* video-related */
tilemap_t* m_bg_tilemap;
/* devices */
cpu_device *m_maincpu;
DECLARE_WRITE8_MEMBER(cball_vram_w);
DECLARE_READ8_MEMBER(cball_wram_r);
DECLARE_WRITE8_MEMBER(cball_wram_w);
TILE_GET_INFO_MEMBER(get_tile_info);
virtual void machine_start();
virtual void machine_reset();
virtual void video_start();
virtual void palette_init();
UINT32 screen_update_cball(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
TIMER_CALLBACK_MEMBER(interrupt_callback);
};
TILE_GET_INFO_MEMBER(cball_state::get_tile_info)
{
UINT8 code = m_video_ram[tile_index];
SET_TILE_INFO_MEMBER(0, code, code >> 7, 0);
}
WRITE8_MEMBER(cball_state::cball_vram_w)
{
m_video_ram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset);
}
void cball_state::video_start()
{
m_bg_tilemap = &machine().tilemap().create(tilemap_get_info_delegate(FUNC(cball_state::get_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
}
UINT32 cball_state::screen_update_cball(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
/* draw playfield */
m_bg_tilemap->draw(bitmap, cliprect, 0, 0);
/* draw sprite */
drawgfx_transpen(bitmap, cliprect, machine().gfx[1],
m_video_ram[0x399] >> 4,
0,
0, 0,
240 - m_video_ram[0x390],
240 - m_video_ram[0x398], 0);
return 0;
}
TIMER_CALLBACK_MEMBER(cball_state::interrupt_callback)
{
int scanline = param;
generic_pulse_irq_line(*m_maincpu, 0, 1);
scanline = scanline + 32;
if (scanline >= 262)
scanline = 16;
machine().scheduler().timer_set(machine().primary_screen->time_until_pos(scanline), timer_expired_delegate(FUNC(cball_state::interrupt_callback),this), scanline);
}
void cball_state::machine_start()
{
m_maincpu = machine().device<cpu_device>("maincpu");
}
void cball_state::machine_reset()
{
machine().scheduler().timer_set(machine().primary_screen->time_until_pos(16), timer_expired_delegate(FUNC(cball_state::interrupt_callback),this), 16);
}
void cball_state::palette_init()
{
palette_set_color(machine(), 0, MAKE_RGB(0x80, 0x80, 0x80));
palette_set_color(machine(), 1, MAKE_RGB(0x00, 0x00, 0x00));
palette_set_color(machine(), 2, MAKE_RGB(0x80, 0x80, 0x80));
palette_set_color(machine(), 3, MAKE_RGB(0xff, 0xff, 0xff));
palette_set_color(machine(), 4, MAKE_RGB(0x80, 0x80, 0x80));
palette_set_color(machine(), 5, MAKE_RGB(0xc0, 0xc0, 0xc0));
}
READ8_MEMBER(cball_state::cball_wram_r)
{
return m_video_ram[0x380 + offset];
}
WRITE8_MEMBER(cball_state::cball_wram_w)
{
m_video_ram[0x380 + offset] = data;
}
static ADDRESS_MAP_START( cpu_map, AS_PROGRAM, 8, cball_state )
ADDRESS_MAP_GLOBAL_MASK(0x7fff)
AM_RANGE(0x0000, 0x03ff) AM_READ(cball_wram_r) AM_MASK(0x7f)
AM_RANGE(0x0400, 0x07ff) AM_READONLY
AM_RANGE(0x1001, 0x1001) AM_READ_PORT("1001")
AM_RANGE(0x1003, 0x1003) AM_READ_PORT("1003")
AM_RANGE(0x1020, 0x1020) AM_READ_PORT("1020")
AM_RANGE(0x1040, 0x1040) AM_READ_PORT("1040")
AM_RANGE(0x1060, 0x1060) AM_READ_PORT("1060")
AM_RANGE(0x2000, 0x2001) AM_NOP
AM_RANGE(0x2800, 0x2800) AM_READ_PORT("2800")
AM_RANGE(0x0000, 0x03ff) AM_WRITE(cball_wram_w) AM_MASK(0x7f)
AM_RANGE(0x0400, 0x07ff) AM_WRITE(cball_vram_w) AM_SHARE("video_ram")
AM_RANGE(0x1800, 0x1800) AM_NOP /* watchdog? */
AM_RANGE(0x1810, 0x1811) AM_NOP
AM_RANGE(0x1820, 0x1821) AM_NOP
AM_RANGE(0x1830, 0x1831) AM_NOP
AM_RANGE(0x1840, 0x1841) AM_NOP
AM_RANGE(0x1850, 0x1851) AM_NOP
AM_RANGE(0x1870, 0x1871) AM_NOP
AM_RANGE(0x7000, 0x7fff) AM_ROM
ADDRESS_MAP_END
static INPUT_PORTS_START( cball )
PORT_START("1001")
PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x00, "2 Coins each" )
PORT_DIPSETTING( 0xc0, "1 Coin each" )
PORT_DIPSETTING( 0x80, "1 Coin 1 Game" )
PORT_DIPSETTING( 0x40, "1 Coin 2 Games" )
PORT_START("1003")
PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Lives ) )
PORT_DIPSETTING( 0xc0, "3" )
PORT_DIPSETTING( 0x80, "5" )
PORT_DIPSETTING( 0x40, "7" )
PORT_DIPSETTING( 0x00, "9" )
PORT_START("1020")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )
PORT_START("1040")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_START("1060")
PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
PORT_START("2800")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 )
INPUT_PORTS_END
static const gfx_layout tile_layout =
{
8, 8,
64,
1,
{ 0 },
{
0, 1, 2, 3, 4, 5, 6, 7
},
{
0x00, 0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38
},
0x40
};
static const gfx_layout sprite_layout =
{
16, 16,
16,
1,
{ 0 },
{
0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0,
0xf, 0xe, 0xd, 0xc, 0xb, 0xa, 0x9, 0x8
},
{
0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
0x80, 0x90, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0
},
0x100
};
static GFXDECODE_START( cball )
GFXDECODE_ENTRY( "gfx1", 0, tile_layout, 0, 2 )
GFXDECODE_ENTRY( "gfx2", 0, sprite_layout, 4, 1 )
GFXDECODE_END
static MACHINE_CONFIG_START( cball, cball_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6800, XTAL_12_096MHz / 16) /* ? */
MCFG_CPU_PROGRAM_MAP(cpu_map)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_SIZE(256, 262)
MCFG_SCREEN_VISIBLE_AREA(0, 255, 0, 223)
MCFG_SCREEN_UPDATE_DRIVER(cball_state, screen_update_cball)
MCFG_GFXDECODE(cball)
MCFG_PALETTE_LENGTH(6)
/* sound hardware */
MACHINE_CONFIG_END
ROM_START( cball )
ROM_REGION( 0x8000, "maincpu", 0 )
ROM_LOAD_NIB_LOW ( "canball.1e", 0x7400, 0x0400, CRC(0b34823b) SHA1(0db6b9f78f7c07ee7d35f2bf048ba61fe43b1e26) )
ROM_LOAD_NIB_HIGH( "canball.1l", 0x7400, 0x0400, CRC(b43ca275) SHA1(a03e03f6366877cfdcec71030a5fb2c5171c8d8a) )
ROM_LOAD_NIB_LOW ( "canball.1f", 0x7800, 0x0400, CRC(29b4e1f7) SHA1(8cef944b6e0153c304aa2d4cfdc530b8a4eef021) )
ROM_LOAD_NIB_HIGH( "canball.1k", 0x7800, 0x0400, CRC(a4d1cf12) SHA1(99de6470efd16e57d72019e065f55bc740f3c7fc) )
ROM_LOAD_NIB_LOW ( "canball.1h", 0x7c00, 0x0400, CRC(13f55937) SHA1(7514c27e60944c4e00992c8ecbc5115f8ff948bb) )
ROM_LOAD_NIB_HIGH( "canball.1j", 0x7c00, 0x0400, CRC(5b905d69) SHA1(2408dd6e44c51c0c9bdb82d2d33826c03f8308c4) )
ROM_REGION( 0x0200, "gfx1", 0 ) /* tiles */
ROM_LOAD_NIB_LOW ( "canball.6m", 0x0000, 0x0200, BAD_DUMP CRC(b2aa7578) SHA1(5c3eb80066420002bc3dcc7ca4ab6efad7ed4ae5) ) // missing rom, zerofilled
ROM_LOAD_NIB_HIGH( "canball.6l", 0x0000, 0x0200, CRC(5b1c9e88) SHA1(6e9630db9907170c53942a21302bcf8b721590a3) )
ROM_REGION( 0x0200, "gfx2", 0 ) /* sprites */
ROM_LOAD_NIB_LOW ( "canball.5l", 0x0000, 0x0200, CRC(3d0d1569) SHA1(1dfcf5cf9468d476c4b7d76a261c6fec87a99f93) )
ROM_LOAD_NIB_HIGH( "canball.5k", 0x0000, 0x0200, CRC(c5fdd3c8) SHA1(5aae148439683ff1cf0005a810c81fdcbed525c3) )
ROM_REGION( 0x0100, "proms", 0 )
ROM_LOAD( "canball.6h", 0x0000, 0x0100, CRC(b8094b4c) SHA1(82dc6799a19984f3b204ee3aeeb007e55afc8be3) ) /* sync */
ROM_END
GAME( 1976, cball, 0, cball, cball, driver_device, 0, ROT0, "Atari", "Cannonball (Atari, prototype)", GAME_NO_SOUND | GAME_WRONG_COLORS | GAME_IMPERFECT_GRAPHICS )