/***************************************************************************
Lemmings (c) 1991 Data East USA (DE-0357)
Prototype! Licensed from the home computer version this game never
made it past the arcade field test stage. Unlike most Data East games
this hardware features a pixel layer and a VRAM layer, probably to
make the transition from the pixel addressable computer code to the
arcade hardware.
As prototype software it seems to have a couple of non-critical bugs,
the palette ram check and vram check both overrun their actual ramsize.
Emulation by Bryan McPhail, mish@tendril.co.uk
***************************************************************************/
#include "emu.h"
#include "cpu/m6809/m6809.h"
#include "cpu/m68000/m68000.h"
#include "sound/2151intf.h"
#include "sound/okim6295.h"
#include "includes/lemmings.h"
static WRITE16_HANDLER( lemmings_control_w )
{
lemmings_state *state = space->machine().driver_data<lemmings_state>();
/* Offset==0 Pixel layer X scroll */
if (offset == 4)
return; /* Watchdog or IRQ ack */
COMBINE_DATA(&state->m_control_data[offset]);
}
static READ16_HANDLER( lemmings_trackball_r )
{
switch (offset)
{
case 0: return input_port_read(space->machine(), "AN0");
case 1: return input_port_read(space->machine(), "AN1");
case 4: return input_port_read(space->machine(), "AN2");
case 5: return input_port_read(space->machine(), "AN3");
}
return 0;
}
/* Same as Robocop 2 protection chip */
static READ16_HANDLER( lemmings_prot_r )
{
switch (offset << 1)
{
case 0x41a:
return input_port_read(space->machine(), "BUTTONS");
case 0x320:
return input_port_read(space->machine(), "SYSTEM");
case 0x4e6:
return input_port_read(space->machine(), "DSW");
}
return 0;
}
static WRITE16_HANDLER( lemmings_palette_24bit_w )
{
lemmings_state *state = space->machine().driver_data<lemmings_state>();
int r, g, b;
COMBINE_DATA(&state->m_paletteram[offset]);
if (offset & 1)
offset--;
b = (state->m_paletteram[offset] >> 0) & 0xff;
g = (state->m_paletteram[offset + 1] >> 8) & 0xff;
r = (state->m_paletteram[offset + 1] >> 0) & 0xff;
palette_set_color(space->machine(), offset / 2, MAKE_RGB(r, g, b));
}
static WRITE16_HANDLER( lemmings_sound_w )
{
lemmings_state *state = space->machine().driver_data<lemmings_state>();
soundlatch_w(space, 0, data & 0xff);
device_set_input_line(state->m_audiocpu, 1, HOLD_LINE);
}
static WRITE8_HANDLER( lemmings_sound_ack_w )
{
lemmings_state *state = space->machine().driver_data<lemmings_state>();
device_set_input_line(state->m_audiocpu, 1, CLEAR_LINE);
}
/******************************************************************************/
static ADDRESS_MAP_START( lemmings_map, AS_PROGRAM, 16 )
AM_RANGE(0x000000, 0x0fffff) AM_ROM
AM_RANGE(0x100000, 0x10ffff) AM_RAM
AM_RANGE(0x120000, 0x1207ff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram)
AM_RANGE(0x140000, 0x1407ff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram2)
AM_RANGE(0x160000, 0x160fff) AM_RAM_WRITE(lemmings_palette_24bit_w) AM_BASE_MEMBER(lemmings_state, m_paletteram)
AM_RANGE(0x170000, 0x17000f) AM_RAM_WRITE(lemmings_control_w) AM_BASE_MEMBER(lemmings_state, m_control_data)
AM_RANGE(0x190000, 0x19000f) AM_READ(lemmings_trackball_r)
AM_RANGE(0x1a0000, 0x1a07ff) AM_READ(lemmings_prot_r)
AM_RANGE(0x1a0064, 0x1a0065) AM_WRITE(lemmings_sound_w)
AM_RANGE(0x1c0000, 0x1c0001) AM_WRITE(buffer_spriteram16_w) /* 1 written once a frame */
AM_RANGE(0x1e0000, 0x1e0001) AM_WRITE(buffer_spriteram16_2_w) /* 1 written once a frame */
AM_RANGE(0x200000, 0x201fff) AM_RAM_WRITE(lemmings_vram_w) AM_BASE_MEMBER(lemmings_state, m_vram_data)
AM_RANGE(0x202000, 0x202fff) AM_RAM
AM_RANGE(0x300000, 0x37ffff) AM_RAM_WRITE(lemmings_pixel_0_w) AM_BASE_MEMBER(lemmings_state, m_pixel_0_data)
AM_RANGE(0x380000, 0x39ffff) AM_RAM_WRITE(lemmings_pixel_1_w) AM_BASE_MEMBER(lemmings_state, m_pixel_1_data)
ADDRESS_MAP_END
/******************************************************************************/
static ADDRESS_MAP_START( sound_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0x07ff) AM_RAM
AM_RANGE(0x0800, 0x0801) AM_DEVREADWRITE("ymsnd", ym2151_r,ym2151_w)
AM_RANGE(0x1000, 0x1000) AM_DEVREADWRITE_MODERN("oki", okim6295_device, read, write)
AM_RANGE(0x1800, 0x1800) AM_READWRITE(soundlatch_r,lemmings_sound_ack_w)
AM_RANGE(0x8000, 0xffff) AM_ROM
ADDRESS_MAP_END
/******************************************************************************/
static INPUT_PORTS_START( lemmings )
PORT_START("BUTTONS")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("P1 Select")
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("P1 Hurry")
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 Select")
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 Hurry")
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("SYSTEM")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_SERVICE_NO_TOGGLE(0x0004, IP_ACTIVE_LOW)
PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_VBLANK )
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("DSW")
PORT_DIPNAME( 0x0003, 0x0003, "Credits for 1 Player" )
PORT_DIPSETTING( 0x0003, "1" )
PORT_DIPSETTING( 0x0002, "2" )
PORT_DIPSETTING( 0x0001, "3" )
PORT_DIPSETTING( 0x0000, "4" )
PORT_DIPNAME( 0x000c, 0x000c, "Credits for 2 Player" )
PORT_DIPSETTING( 0x000c, "1" )
PORT_DIPSETTING( 0x0008, "2" )
PORT_DIPSETTING( 0x0004, "3" )
PORT_DIPSETTING( 0x0000, "4" )
PORT_DIPNAME( 0x0030, 0x0030, "Credits for Continue" )
PORT_DIPSETTING( 0x0030, "1" )
PORT_DIPSETTING( 0x0020, "2" )
PORT_DIPSETTING( 0x0010, "3" )
PORT_DIPSETTING( 0x0000, "4" )
PORT_DIPNAME( 0x0040, 0x0040, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x0040, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0080, 0x0080, DEF_STR( Free_Play ) )
PORT_DIPSETTING( 0x0080, DEF_STR( Off ) )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
PORT_DIPNAME( 0x0700, 0x0700, DEF_STR( Coin_A ) )
PORT_DIPSETTING( 0x0700, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x0600, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x0500, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x0400, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0x0300, DEF_STR( 1C_5C ) )
PORT_DIPSETTING( 0x0200, DEF_STR( 1C_6C ) )
PORT_DIPSETTING( 0x0100, DEF_STR( 1C_7C ) )
PORT_DIPSETTING( 0x0000, DEF_STR( 1C_8C ) )
PORT_DIPNAME( 0x3800, 0x3800, DEF_STR( Coin_B ) )
PORT_DIPSETTING( 0x3800, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x3000, DEF_STR( 1C_2C ) )
PORT_DIPSETTING( 0x2800, DEF_STR( 1C_3C ) )
PORT_DIPSETTING( 0x2000, DEF_STR( 1C_4C ) )
PORT_DIPSETTING( 0x1800, DEF_STR( 1C_5C ) )
PORT_DIPSETTING( 0x1000, DEF_STR( 1C_6C ) )
PORT_DIPSETTING( 0x0800, DEF_STR( 1C_7C ) )
PORT_DIPSETTING( 0x0000, DEF_STR( 1C_8C ) )
PORT_DIPUNKNOWN( 0x4000, 0x4000 )
PORT_DIPUNKNOWN( 0x8000, 0x8000 )
PORT_START("AN0")
PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(70) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(1)
PORT_START("AN1")
PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(70) PORT_KEYDELTA(10) PORT_PLAYER(1)
PORT_START("AN2")
PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(70) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(2)
PORT_START("AN3")
PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(70) PORT_KEYDELTA(10) PORT_PLAYER(2)
INPUT_PORTS_END
/******************************************************************************/
static const gfx_layout charlayout =
{
8,8,
2048,
4,
{ 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
{ 0*0, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64 },
8*64
};
static const gfx_layout sprite_layout =
{
16,16,
RGN_FRAC(1,4),
4,
{ 0x30000*8, 0x20000*8, 0x10000*8, 0x00000*8 },
{
7, 6, 5, 4, 3, 2, 1, 0, 16*8+7, 16*8+6, 16*8+5, 16*8+4, 16*8+3, 16*8+2, 16*8+1, 16*8+0
},
{ 15*8, 14*8, 13*8, 12*8, 11*8, 10*8, 9*8, 8*8, 7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 },
32*8
};
static GFXDECODE_START( lemmings )
GFXDECODE_ENTRY( "gfx1", 0, sprite_layout, 32*16, 16 ) /* Sprites 16x16 */
GFXDECODE_ENTRY( "gfx2", 0, sprite_layout, 48*16, 16 ) /* Sprites 16x16 */
GFXDECODE_ENTRY( NULL, 0, charlayout, 0, 16 ) /* Dynamically modified */
GFXDECODE_END
/******************************************************************************/
static void sound_irq( device_t *device, int state )
{
lemmings_state *lemmings = device->machine().driver_data<lemmings_state>();
device_set_input_line(lemmings->m_audiocpu, 0, state);
}
static const ym2151_interface ym2151_config =
{
sound_irq
};
static MACHINE_START( lemmings )
{
lemmings_state *state = machine.driver_data<lemmings_state>();
state->m_audiocpu = machine.device("audiocpu");
}
static MACHINE_CONFIG_START( lemmings, lemmings_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M68000, 14000000)
MCFG_CPU_PROGRAM_MAP(lemmings_map)
MCFG_CPU_VBLANK_INT("screen", irq6_line_hold)
MCFG_CPU_ADD("audiocpu", M6809,32220000/8)
MCFG_CPU_PROGRAM_MAP(sound_map)
MCFG_MACHINE_START(lemmings)
/* video hardware */
MCFG_VIDEO_ATTRIBUTES(VIDEO_BUFFERS_SPRITERAM)
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(529))
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MCFG_SCREEN_SIZE(40*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 2*8, 30*8-1)
MCFG_SCREEN_UPDATE(lemmings)
MCFG_SCREEN_EOF(lemmings)
MCFG_GFXDECODE(lemmings)
MCFG_PALETTE_LENGTH(1024)
MCFG_VIDEO_START(lemmings)
/* sound hardware */
MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
MCFG_SOUND_ADD("ymsnd", YM2151, 32220000/9)
MCFG_SOUND_CONFIG(ym2151_config)
MCFG_SOUND_ROUTE(0, "lspeaker", 0.45)
MCFG_SOUND_ROUTE(1, "rspeaker", 0.45)
MCFG_OKIM6295_ADD("oki", 1023924, OKIM6295_PIN7_HIGH) // clock frequency & pin 7 not verified
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.50)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.50)
MACHINE_CONFIG_END
/******************************************************************************/
ROM_START( lemmings )
ROM_REGION( 0x100000, "maincpu", 0 ) /* 68000 code */
ROM_LOAD16_BYTE( "lemmings.5", 0x00000, 0x20000, CRC(e9a2b439) SHA1(873723a06d71bb41772951f451a75578b30267d5) )
ROM_LOAD16_BYTE( "lemmings.1", 0x00001, 0x20000, CRC(bf52293b) SHA1(47a1ed64bf02776db086fdce80997b8a0c068791) )
ROM_LOAD16_BYTE( "lemmings.6", 0x40000, 0x20000, CRC(0e3dc0ea) SHA1(533abf66ca4b578d03566d5de922dc5828c26eca) )
ROM_LOAD16_BYTE( "lemmings.2", 0x40001, 0x20000, CRC(0cf3d7ce) SHA1(95dc43a8cded860fcf8743b62cbe4f2a97f43215) )
ROM_LOAD16_BYTE( "lemmings.7", 0x80000, 0x20000, CRC(d020219c) SHA1(9678d8636798d1e528269fe2f9eb532e189c134e) )
ROM_LOAD16_BYTE( "lemmings.3", 0x80001, 0x20000, CRC(c635494a) SHA1(e105dc79bd3c425d971629a3066c38dbf08b6428) )
ROM_LOAD16_BYTE( "lemmings.8", 0xc0000, 0x20000, CRC(9166ce09) SHA1(7f0970cc07ebdbfc9a738342259d07d37b397161) )
ROM_LOAD16_BYTE( "lemmings.4", 0xc0001, 0x20000, CRC(aa845488) SHA1(d17ec80f43d2a0123e93fad83d4e1319eb18d7c7) )
ROM_REGION( 0x10000, "audiocpu", 0 ) /* Sound CPU */
ROM_LOAD( "lemmings.15", 0x00000, 0x10000, CRC(f0b24a35) SHA1(1aaeb1e6faee04d2e433161fd7aa965b58e3b8a7) )
ROM_REGION( 0x40000, "gfx1", 0 )
ROM_LOAD( "lemmings.9", 0x000000, 0x10000, CRC(e06442f5) SHA1(d9c8b681cce1d0257a0446bc820c7d679e2a1168) )
ROM_LOAD( "lemmings.10", 0x010000, 0x10000, CRC(36398848) SHA1(6c6956607f889c35367e6df4a32359042fad695e) )
ROM_LOAD( "lemmings.11", 0x020000, 0x10000, CRC(b46a54e5) SHA1(53b053346f80357aecff4ab888a8562f99cb318f) )
ROM_FILL( 0x030000, 0x10000, 0 ) /* 3bpp data but sprite chip expects 4 */
ROM_REGION( 0x40000, "gfx2", 0 )
ROM_LOAD( "lemmings.12", 0x000000, 0x10000, CRC(dc9047ff) SHA1(1bbe573fa51127a9e8b970a353f3cceab00f486a) )
ROM_LOAD( "lemmings.13", 0x010000, 0x10000, CRC(7cc15491) SHA1(73c1c11b2738f6679c70cae8ac4c55cdc9b8fc27) )
ROM_LOAD( "lemmings.14", 0x020000, 0x10000, CRC(c162788f) SHA1(e1f669efa59699cd1b7da71b112701ee79240c18) )
ROM_FILL( 0x030000, 0x10000, 0 ) /* 3bpp data but sprite chip expects 4 */
ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
ROM_LOAD( "lemmings.16", 0x00000, 0x20000, CRC(f747847c) SHA1(00880fa6dff979e5d15daea61938bd18c768c92f) )
ROM_END
/******************************************************************************/
GAME( 1991, lemmings, 0, lemmings, lemmings, 0, ROT0, "Data East USA", "Lemmings (US prototype)", GAME_SUPPORTS_SAVE )