// license:BSD-3-Clause // copyright-holders:Bryan McPhail /*************************************************************************** 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 "includes/lemmings.h" #include "cpu/m6809/m6809.h" #include "cpu/m68000/m68000.h" #include "sound/ym2151.h" #include "sound/okim6295.h" #include "screen.h" #include "speaker.h" WRITE16_MEMBER(lemmings_state::lemmings_control_w) { /* Offset==0 Pixel layer X scroll */ if (offset == 4) return; /* Watchdog or IRQ ack */ COMBINE_DATA(&m_control_data[offset]); } READ16_MEMBER(lemmings_state::lemmings_trackball_r) { if ((offset & 2) == 0) return m_trackball_io[(offset & 1) | ((offset & 4) >> 1)]->read(); return 0; } READ16_MEMBER( lemmings_state::lem_protection_region_0_146_r ) { int real_address = 0 + (offset *2); int deco146_addr = bitswap<32>(real_address, /* NC */31,30,29,28,27,26,25,24,23,22,21,20,19,18, 13,12,11,/**/ 17,16,15,14, 10,9,8, 7,6,5,4, 3,2,1,0) & 0x7fff; uint8_t cs = 0; uint16_t data = m_deco146->read_data( deco146_addr, cs ); return data; } WRITE16_MEMBER( lemmings_state::lem_protection_region_0_146_w ) { int real_address = 0 + (offset *2); int deco146_addr = bitswap<32>(real_address, /* NC */31,30,29,28,27,26,25,24,23,22,21,20,19,18, 13,12,11,/**/ 17,16,15,14, 10,9,8, 7,6,5,4, 3,2,1,0) & 0x7fff; uint8_t cs = 0; m_deco146->write_data( deco146_addr, data, mem_mask, cs ); } /******************************************************************************/ void lemmings_state::lemmings_map(address_map &map) { map(0x000000, 0x0fffff).rom(); map(0x100000, 0x10ffff).ram(); map(0x120000, 0x1207ff).ram().share("spriteram1"); map(0x140000, 0x1407ff).ram().share("spriteram2"); map(0x160000, 0x160fff).ram().w(m_palette, FUNC(palette_device::write16)).share("palette"); map(0x170000, 0x17000f).ram().w(FUNC(lemmings_state::lemmings_control_w)).share("control_data"); map(0x190000, 0x19000f).r(FUNC(lemmings_state::lemmings_trackball_r)); map(0x1a0000, 0x1a3fff).rw(FUNC(lemmings_state::lem_protection_region_0_146_r), FUNC(lemmings_state::lem_protection_region_0_146_w)).share("prot16ram"); /* Protection device */ map(0x1c0000, 0x1c0001).w(m_spriteram[0], FUNC(buffered_spriteram16_device::write)); /* 1 written once a frame */ map(0x1e0000, 0x1e0001).w(m_spriteram[1], FUNC(buffered_spriteram16_device::write)); /* 1 written once a frame */ map(0x200000, 0x201fff).ram().w(FUNC(lemmings_state::lemmings_vram_w)).share("vram_data"); map(0x202000, 0x202fff).ram(); map(0x300000, 0x37ffff).ram().w(FUNC(lemmings_state::lemmings_pixel_0_w)).share("pixel_0_data"); map(0x380000, 0x39ffff).ram().w(FUNC(lemmings_state::lemmings_pixel_1_w)).share("pixel_1_data"); } /******************************************************************************/ void lemmings_state::sound_map(address_map &map) { map(0x0000, 0x07ff).ram(); map(0x0800, 0x0801).rw("ymsnd", FUNC(ym2151_device::read), FUNC(ym2151_device::write)); map(0x1000, 0x1000).rw("oki", FUNC(okim6295_device::read), FUNC(okim6295_device::write)); map(0x1800, 0x1800).r(m_deco146, FUNC(deco_146_base_device::soundlatch_r)).nopw(); // writes an extra irq ack? map(0x8000, 0xffff).rom(); } /******************************************************************************/ static INPUT_PORTS_START( lemmings ) PORT_START("INPUTS") 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_CUSTOM ) PORT_VBLANK("screen") 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, { STEP4(4,1) }, { STEP8(0,8) }, { STEP8(0,8*8) }, 8*8*8 }; static const gfx_layout sprite_layout = { 16,16, RGN_FRAC(1,1), 4, { STEP4(0,8) }, { STEP8(8*4*16,1), STEP8(0,1) }, { STEP16(0,8*4) }, 16*16*4 }; static GFXDECODE_START( gfx_lemmings ) GFXDECODE_ENTRY( "gfx1", 0, sprite_layout, 512, 16 ) /* Sprites 16x16 */ GFXDECODE_ENTRY( "gfx2", 0, sprite_layout, 768, 16 ) /* Sprites 16x16 */ GFXDECODE_ENTRY( nullptr,0, charlayout, 0, 16 ) /* Dynamically modified */ GFXDECODE_END /******************************************************************************/ void lemmings_state::machine_start() { } void lemmings_state::lemmings(machine_config &config) { /* basic machine hardware */ M68000(config, m_maincpu, 28_MHz_XTAL / 2); // Data East 59 m_maincpu->set_addrmap(AS_PROGRAM, &lemmings_state::lemmings_map); m_maincpu->set_vblank_int("screen", FUNC(lemmings_state::irq6_line_hold)); MC6809E(config, m_audiocpu, 32.22_MHz_XTAL / 24); // MC68B09EP; clock not verified m_audiocpu->set_addrmap(AS_PROGRAM, &lemmings_state::sound_map); /* video hardware */ BUFFERED_SPRITERAM16(config, m_spriteram[0]); BUFFERED_SPRITERAM16(config, m_spriteram[1]); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_refresh_hz(60); screen.set_vblank_time(ATTOSECONDS_IN_USEC(529)); screen.set_size(40*8, 32*8); screen.set_visarea(0*8, 40*8-1, 2*8, 30*8-1); screen.set_screen_update(FUNC(lemmings_state::screen_update_lemmings)); screen.screen_vblank().set(FUNC(lemmings_state::screen_vblank_lemmings)); GFXDECODE(config, m_gfxdecode, m_palette, gfx_lemmings); PALETTE(config, m_palette).set_format(palette_device::xBGR_888, 1024); DECO_SPRITE(config, m_sprgen[0], 0); m_sprgen[0]->set_gfx_region(1); m_sprgen[0]->set_gfxdecode_tag(m_gfxdecode); DECO_SPRITE(config, m_sprgen[1], 0); m_sprgen[1]->set_gfx_region(0); m_sprgen[1]->set_gfxdecode_tag(m_gfxdecode); DECO146PROT(config, m_deco146, 0); m_deco146->port_a_cb().set_ioport("INPUTS"); m_deco146->port_b_cb().set_ioport("SYSTEM"); m_deco146->port_c_cb().set_ioport("DSW"); m_deco146->set_use_magic_read_address_xor(true); m_deco146->soundlatch_irq_cb().set_inputline(m_audiocpu, M6809_FIRQ_LINE); /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); GENERIC_LATCH_8(config, m_soundlatch); ym2151_device &ymsnd(YM2151(config, "ymsnd", 32.22_MHz_XTAL / 9)); // clock likely wrong ymsnd.irq_handler().set_inputline(m_audiocpu, M6809_IRQ_LINE); ymsnd.add_route(0, "lspeaker", 0.45); ymsnd.add_route(1, "rspeaker", 0.45); okim6295_device &oki(OKIM6295(config, "oki", 1023924, okim6295_device::PIN7_HIGH)); // clock frequency & pin 7 not verified oki.add_route(ALL_OUTPUTS, "lspeaker", 0.50); oki.add_route(ALL_OUTPUTS, "rspeaker", 0.50); } /******************************************************************************/ 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", ROMREGION_ERASE00 ) /* 3bpp data but sprite chip expects 4 */ ROM_LOAD32_BYTE( "lemmings.9", 0x000003, 0x10000, CRC(e06442f5) SHA1(d9c8b681cce1d0257a0446bc820c7d679e2a1168) ) ROM_LOAD32_BYTE( "lemmings.10", 0x000002, 0x10000, CRC(36398848) SHA1(6c6956607f889c35367e6df4a32359042fad695e) ) ROM_LOAD32_BYTE( "lemmings.11", 0x000001, 0x10000, CRC(b46a54e5) SHA1(53b053346f80357aecff4ab888a8562f99cb318f) ) ROM_REGION( 0x40000, "gfx2", ROMREGION_ERASE00 ) /* 3bpp data but sprite chip expects 4 */ ROM_LOAD32_BYTE( "lemmings.12", 0x000003, 0x10000, CRC(dc9047ff) SHA1(1bbe573fa51127a9e8b970a353f3cceab00f486a) ) ROM_LOAD32_BYTE( "lemmings.13", 0x000002, 0x10000, CRC(7cc15491) SHA1(73c1c11b2738f6679c70cae8ac4c55cdc9b8fc27) ) ROM_LOAD32_BYTE( "lemmings.14", 0x000001, 0x10000, CRC(c162788f) SHA1(e1f669efa59699cd1b7da71b112701ee79240c18) ) 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, lemmings_state, empty_init, ROT0, "Data East USA", "Lemmings (US prototype)", MACHINE_SUPPORTS_SAVE )