// license:BSD-3-Clause // copyright-holders:Anthony Kruize,Wilbert Pol /*************************************************************************** gb.c Driver file to handle emulation of the Nintendo Game Boy. By: Hans de Goede 1998 Anthony Kruize 2002 Wilbert Pol 2004 (Megaduck/Cougar Boy) TODO list: - Do correct lcd stat timing - Add Game Boy Light (Japan, 1997) - does it differ from gbpocket? - SGB should be moved to SNES driver - Emulate OAM corruption bug on 16bit inc/dec in $fe** region Mappers used in the Game Boy =========================== MBC1 Mapper =========== The MBC1 mapper has two modes: 2MB ROM/8KB RAM or 512KB ROM/32KB RAM. Initially, the mapper operates in 2MB ROM/8KB RAM mode. 0000-1FFF - Writing to this area enables (value 0x0A) or disables (not 0x0A) the SRAM. 2000-3FFF - Writing a value 0bXXXBBBBB into the 2000-3FFF memory area selects the lower 5 bits of the ROM bank to select for the 4000-7FFF memory area. If a value of 0bXXX00000 is written then this will autmatically be changed to 0bXXX00001 by the mbc chip. Initial value 00. 4000-5FFF - Writing a value 0bXXXXXXBB into the 4000-5FFF memory area either selects the RAM bank to use or bits 6 and 7 for the ROM bank to use for the 4000-7FFF memory area. This behaviour depends on the memory moddel chosen. These address lines are fixed in mode 1 and switch depending on A14 in mode 0. In mode 0 these will drive 0 when RB 00 is accessed (A14 low) or the value set in 4000-5FFF when RB <> 00 is accessed (A14 high). Switching between modes does not clear this register. Initial value 00. 6000-7FFF - Writing a value 0bXXXXXXXB into the 6000-7FFF memory area switches the mode. B=0 - 2MB ROM/8KB RAM mode B=1 - 512KB ROM/32KB RAM mode Regular ROM aliasing rules apply. MBC2 Mapper =========== The MBC2 mapper includes 512x4bits of builtin RAM. 0000-3FFF - Writing to this area enables (value 0bXXXX1010) or disables (any other value than 0bXXXX1010) the RAM. In order to perform this function bit 8 of the address must be reset, so usable areas are 0000-00FF, 0200-02FF, 0400-04FF, 0600-06FF, ..., 3E00-3EFF, 0000-3FFF - Writing to this area selects the rom bank to appear at 4000-7FFF. Only bits 3-0 are used to select the bank number. If a value of 0bXXXX0000 is written then this is automatically changed into 0bXXXX0001 by the mapper. In order to perform the rom banking bit 8 of the address must be set, so usable areas are 0100-01FF, 0300-03FF, 0500-05FF, 0700- 07FF,..., 3F00-3FFF, Regular ROM aliasing rules apply. MBC3 Mapper =========== The MBC3 mapper cartridges can include a RTC chip. 0000-1FFF - Writing to this area enables (value 0x0A) or disables (not 0x0A) the SRAM and RTC registers. 2000-3FFF - Writing to this area selects the rom bank to appear at 4000-7FFF. Bits 6-0 are used to select the bank number. If a value of 0bX0000000 is written then this is autmatically changed into 0bX0000001 by the mapper. 4000-5FFF - Writing to this area selects the RAM bank or the RTC register to read. XXXX00bb - Select RAM bank bb. XXXX1rrr - Select RTC register rrr. Accepted values for rrr are: 000 - Seconds (0x00-0x3B) 001 - Minutes (0x00-0x3B) 010 - Hours (0x00-0x17) 011 - Bits 7-0 of the day counter 100 - bit 0 - Bit 8 of the day counter bit 6 - Halt RTC timer ( 0 = timer active, 1 = halted) bit 7 - Day counter overflow flag 6000-7FFF - Writing 0x00 followed by 0x01 latches the RTC data. This latching method is used for reading the RTC registers. Regular ROM aliasing rules apply. MBC5 Mapper =========== 0000-1FFF - Writing to this area enables (0x0A) or disables (not 0x0A) the SRAM area. 2000-2FFF - Writing to this area updates bits 7-0 of the rom bank number to appear at 4000-7FFF. 3000-3FFF - Writing to this area updates bit 8 of the rom bank number to appear at 4000-7FFF. 4000-5FFF - Writing to this area select the RAM bank number to use. If the cartridge includes a Rumble Pack then bit 3 is used to control rumble motor (0 - disable motor, 1 - enable motor). MBC7 Mapper (Used by Kirby's Tilt n' Tumble, Command Master) =========== Status: Partial support (only ROM banking supported at the moment) The MBC7 mapper has 0x0200(?) bytes of RAM built in. 0000-1FFF - Probably enable/disable RAM In order to use this area bit 12 of the address be set. Values written: 00, 0A 2000-2FFF - Writing to this area selects the ROM bank to appear at 4000-7FFF. In order to use this area bit 12 of the address be set. Values written: 01, 07, 01, 1C 3000-3FFF - Unknown In order to use this area bit 12 of the address be set. Values written: 00 4000-4FFF - Unknown In order to use this area bit 12 of the address be set. Values written: 00, 40, 3F TAMA5 Mapper (Used by Tamagotchi 3) ============ Status: partially supported. The TAMA5 mapper includes a special RTC chip which communicates through the RAM area (0xA000-0xBFFF); most notably addresses 0xA000 and 0xA001 seem to be used. In this setup 0xA001 acts like a control register and 0xA000 like a data register. Accepted values by the TAMA5 control register: 0x00 - Writing to 0xA000 will set bits 3-0 for rom bank selection. 0x01 - Writing to 0xA000 will set bits (7-?)4 for rom bank selection. 0x04 - Bits 3-0 of the value to write 0x05 - Bits 4-7 of the value to write 0x06 - Address control hi bit 0 - Bit 4 for the address bit 3-1 - 000 - Write a byte to the 32 byte memory. The data to be written must be set in registers 0x04 (lo nibble) and 0x05 (hi nibble). - 001 - Read a byte from the 32 byte memory. The data read will be available in registers 0x0C (lo nibble) and 0x0D (hi nibble). - 010 - Unknown (occurs just after having started a game and entered a date) (execution at address 1A19) - 011 - Unknown (not encountered yet) - 100 - Unknown (occurs during booting a game; appears to be some kind of read command as it is followed by a read of the 0x0C register) (execution at address 1B5B) - 101 - Unknown (not encountered yet) - 110 - Unknown (not encountered yet) - 111 - Unknown (not encountered yet) 0x07 - Address control lo bit 3-0 - bits 3-0 for the address 0x0A - After writing this the lowest 2 bits of A000 determine whether the TAMA5 chip is ready to accept the next command. If the lowest 2 bits hold the value 01 then the TAMA5 chip is ready for the next command. 0x0C - Reading from A000 will return bits 3-0 of the data 0x0D - Reading from A000 will return bits 7-4 of the data 0x04 - RTC controls? -> RTC/memory? 0x05 - Write time/memomry? 0x06 - RTC controls? 0x07 - RTC controls? Unknown sequences: During booting a game (1B5B: 04 <- 00, 06 <- 08, 07 <- 01, followed by read 0C when value read from 0C equals 00 followed by the sequence: 04 <- 01, 06 <- 08, 07 <- 01, followed by read 0C the value read from 0C is checked for non-zero, don't know the consequences for either yet. Initialization after starting a game: At address 1A19: 06 <- 05, 07 <- 02, followed by read 0C, if != 0F => OK, otherwise do something. MMM01 mapper ============ Used by: Momotarou Collection 2, Taito Pack Status: not supported yet. Momotarou Collection 2: MOMOTARODENGEKI2, 0x00000, blocks 0x00 - 0x1F 0x147: 01 04 00 00 33 00 MOMOTAROU GAIDEN, 0x80000, blocks 0x20 - 0x3F 0x147: 06 03 00 00 18 00 When picking top option: 3FFF <- 20 5FFF <- 40 7FFF <- 21 1FFF <- 3A 1FFF <- 7A When picking bottom option: 3FFF <- 00 5FFF <- 01 7FFF <- 01 1FFF <- 3A 1FFF <- 7A Taito Pack (MMM01+RAM, 512KB, 64KB RAM): 1st option (BUBBLE BOBBLE, blocks 0x10 - 0x17, MBC1+RAM, 128KB, 8KB RAM): 2000 <- 70 01110000 => starting block, 10000 6000 <- 30 00110000 => 8 blocks 4000 <- 70 01110000 => ??? 0000 <- 40 01000000 => upper 3 bits determine lower 3 bits of starting block? 2nd option (ELEVATOR ACTION, blocks 0x18 - 0x1B, MBC1, 64KB, 2KB RAM): 2000 <- 78 01111000 => starting block, 11000 6000 <- 38 00111000 => 4 blocks 4000 <- 70 01110000 => ??? 0000 <- 40 01000000 => upper 3 bits determine lower 3 bits of starting block? 3rd option (CHASE HQ, blocks 0x08 - 0x0F, MBC1+RAM, 128KB, 8KB RAM): 2000 <- 68 01101000 => starting block, 01000 6000 <- 30 00110000 => 8 blocks 4000 <- 70 01110000 => ??? 0000 <- 40 01000000 => upper 3 bits determine lower 3 bits of starting block? 4th option (SAGAIA, blocks 0x00 - 0x07, MBC1+RAM, 128KB, 8KB RAM): 2000 <- 60 01100000 => starting block, 00000 6000 <- 30 00110000 => 8 blocks 4000 <- 70 01110000 => ??? 0000 <- 40 01000000 => upper 3 bits determine lower 3 bits of starting block? Known: The last 2 banks in a MMM01 dump are actually the starting banks for a MMM01 image. 0000-1FFF => bit6 set => perform mapping Possible mapping registers: 1FFF - Enable RAM ??? 3FFF - xxxbbbbb - Bit0-5 of the rom bank to select at 0x4000-0x7FFF ? HuC1 mapper =========== Status: not supported yet. HuC3 mapper =========== Status: not supported yet. Wisdom Tree mapper ================== The Wisdom Tree mapper is triggered by writes in the 0x0000-0x3FFF area. The address written to determines the bank to switch in in the 0x000-0x7FFF address space. This mapper uses 32KB sized banks. ***************************************************************************/ #include "emu.h" #include "includes/gb.h" #include "bus/gameboy/rom.h" #include "bus/gameboy/mbc.h" #include "screen.h" #include "softlist.h" #include "speaker.h" #define DMG_FRAMES_PER_SECOND 59.732155 #define SGB_FRAMES_PER_SECOND 61.17 READ8_MEMBER(gb_state::gb_cart_r) { if (m_bios_disable && m_cartslot) return m_cartslot->read_rom(space, offset); else { if (offset < 0x100) { uint8_t *ROM = m_region_maincpu->base(); if (m_bios_hack->read()) { // patch out logo and checksum checks // (useful to run some pirate carts until we implement // their complete functionalities + to test homebrew) if (offset == 0xe9 || offset == 0xea) return 0x00; if (offset == 0xfa || offset == 0xfb) return 0x00; } return ROM[offset]; } else if (m_cartslot) { return m_cartslot->read_rom(space, offset); } else return 0xff; } } READ8_MEMBER(gb_state::gbc_cart_r) { if (m_bios_disable && m_cartslot) return m_cartslot->read_rom(space, offset); else { if (offset < 0x100) { uint8_t *ROM = m_region_maincpu->base(); if (m_bios_hack->read()) { // patch out logo and checksum checks // (useful to run some pirate carts until we implement // their complete functionalities + to test homebrew) if (offset == 0xdb || offset == 0xdc) return 0x00; if (offset == 0xed || offset == 0xee) return 0x00; } return ROM[offset]; } else if (offset >= 0x200 && offset < 0x900) { uint8_t *ROM = m_region_maincpu->base(); return ROM[offset - 0x100]; } else if (m_cartslot) { return m_cartslot->read_rom(space, offset); } else return 0xff; } } WRITE8_MEMBER(gb_state::gb_bank_w) { if (m_cartslot) m_cartslot->write_bank(space, offset, data); } READ8_MEMBER(gb_state::gb_ram_r) { if (m_cartslot) return m_cartslot->read_ram(space, offset); else return 0xff; } WRITE8_MEMBER(gb_state::gb_ram_w) { if (m_cartslot) m_cartslot->write_ram(space, offset, data); } READ8_MEMBER(gb_state::gb_echo_r) { return space.read_byte(0xc000 + offset); } WRITE8_MEMBER(gb_state::gb_echo_w) { return space.write_byte(0xc000 + offset, data); } READ8_MEMBER(megaduck_state::cart_r) { if (m_cartslot) return m_cartslot->read_rom(space, offset); else return 0xff; } WRITE8_MEMBER(megaduck_state::bank1_w) { if (m_cartslot) m_cartslot->write_bank(space, offset, data); } WRITE8_MEMBER(megaduck_state::bank2_w) { if (m_cartslot) m_cartslot->write_ram(space, offset, data); /* used for bankswitch, but we re-use GB name */ } void gb_state::gameboy_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).rw(FUNC(gb_state::gb_cart_r), FUNC(gb_state::gb_bank_w)); map(0x8000, 0x9fff).rw(m_ppu, FUNC(dmg_ppu_device::vram_r), FUNC(dmg_ppu_device::vram_w)); /* 8k VRAM */ map(0xa000, 0xbfff).rw(FUNC(gb_state::gb_ram_r), FUNC(gb_state::gb_ram_w)); /* 8k switched RAM bank (cartridge) */ map(0xc000, 0xdfff).ram(); /* 8k low RAM */ map(0xe000, 0xfdff).rw(FUNC(gb_state::gb_echo_r), FUNC(gb_state::gb_echo_w)); map(0xfe00, 0xfeff).rw(m_ppu, FUNC(dmg_ppu_device::oam_r), FUNC(dmg_ppu_device::oam_w)); /* OAM RAM */ map(0xff00, 0xff0f).rw(FUNC(gb_state::gb_io_r), FUNC(gb_state::gb_io_w)); /* I/O */ map(0xff10, 0xff26).rw(m_apu, FUNC(gameboy_sound_device::sound_r), FUNC(gameboy_sound_device::sound_w)); /* sound registers */ map(0xff27, 0xff2f).noprw(); /* unused */ map(0xff30, 0xff3f).rw(m_apu, FUNC(gameboy_sound_device::wave_r), FUNC(gameboy_sound_device::wave_w)); /* Wave ram */ map(0xff40, 0xff7f).r(m_ppu, FUNC(dmg_ppu_device::video_r)).w(FUNC(gb_state::gb_io2_w)); /* Video controller & BIOS flip-flop */ map(0xff80, 0xfffe).ram(); /* High RAM */ map(0xffff, 0xffff).rw(FUNC(gb_state::gb_ie_r), FUNC(gb_state::gb_ie_w)); /* Interrupt enable register */ } void gb_state::sgb_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).rw(FUNC(gb_state::gb_cart_r), FUNC(gb_state::gb_bank_w)); map(0x8000, 0x9fff).rw(m_ppu, FUNC(sgb_ppu_device::vram_r), FUNC(sgb_ppu_device::vram_w)); /* 8k VRAM */ map(0xa000, 0xbfff).rw(FUNC(gb_state::gb_ram_r), FUNC(gb_state::gb_ram_w)); /* 8k switched RAM bank (cartridge) */ map(0xc000, 0xdfff).ram(); /* 8k low RAM */ map(0xe000, 0xfdff).rw(FUNC(gb_state::gb_echo_r), FUNC(gb_state::gb_echo_w)); map(0xfe00, 0xfeff).rw(m_ppu, FUNC(sgb_ppu_device::oam_r), FUNC(sgb_ppu_device::oam_w)); /* OAM RAM */ map(0xff00, 0xff0f).rw(FUNC(gb_state::gb_io_r), FUNC(gb_state::sgb_io_w)); /* I/O */ map(0xff10, 0xff26).rw(m_apu, FUNC(gameboy_sound_device::sound_r), FUNC(gameboy_sound_device::sound_w)); /* sound registers */ map(0xff27, 0xff2f).noprw(); /* unused */ map(0xff30, 0xff3f).rw(m_apu, FUNC(gameboy_sound_device::wave_r), FUNC(gameboy_sound_device::wave_w)); /* Wave RAM */ map(0xff40, 0xff7f).r(m_ppu, FUNC(sgb_ppu_device::video_r)).w(FUNC(gb_state::gb_io2_w)); /* Video controller & BIOS flip-flop */ map(0xff80, 0xfffe).ram(); /* High RAM */ map(0xffff, 0xffff).rw(FUNC(gb_state::gb_ie_r), FUNC(gb_state::gb_ie_w)); /* Interrupt enable register */ } void gb_state::gbc_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).rw(FUNC(gb_state::gbc_cart_r), FUNC(gb_state::gb_bank_w)); map(0x8000, 0x9fff).rw(m_ppu, FUNC(cgb_ppu_device::vram_r), FUNC(cgb_ppu_device::vram_w)); /* 8k banked VRAM */ map(0xa000, 0xbfff).rw(FUNC(gb_state::gb_ram_r), FUNC(gb_state::gb_ram_w)); /* 8k switched RAM bank (cartridge) */ map(0xc000, 0xcfff).ram(); /* 4k fixed RAM bank */ map(0xd000, 0xdfff).bankrw("cgb_ram"); /* 4k switched RAM bank */ map(0xe000, 0xfdff).rw(FUNC(gb_state::gb_echo_r), FUNC(gb_state::gb_echo_w)); map(0xfe00, 0xfeff).rw(m_ppu, FUNC(cgb_ppu_device::oam_r), FUNC(cgb_ppu_device::oam_w)); /* OAM RAM */ map(0xff00, 0xff0f).rw(FUNC(gb_state::gb_io_r), FUNC(gb_state::gbc_io_w)); /* I/O */ map(0xff10, 0xff26).rw(m_apu, FUNC(gameboy_sound_device::sound_r), FUNC(gameboy_sound_device::sound_w)); /* sound controller */ map(0xff27, 0xff2f).noprw(); /* unused */ map(0xff30, 0xff3f).rw(m_apu, FUNC(gameboy_sound_device::wave_r), FUNC(gameboy_sound_device::wave_w)); /* Wave RAM */ map(0xff40, 0xff7f).rw(FUNC(gb_state::gbc_io2_r), FUNC(gb_state::gbc_io2_w)); /* Other I/O and video controller */ map(0xff80, 0xfffe).ram(); /* high RAM */ map(0xffff, 0xffff).rw(FUNC(gb_state::gb_ie_r), FUNC(gb_state::gb_ie_w)); /* Interrupt enable register */ } void megaduck_state::megaduck_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).rw(FUNC(megaduck_state::cart_r), FUNC(megaduck_state::bank1_w)); map(0x8000, 0x9fff).rw(m_ppu, FUNC(dmg_ppu_device::vram_r), FUNC(dmg_ppu_device::vram_w)); /* 8k VRAM */ map(0xa000, 0xafff).noprw(); /* unused? */ map(0xb000, 0xb000).w(FUNC(megaduck_state::bank2_w)); map(0xb001, 0xbfff).noprw(); /* unused? */ map(0xc000, 0xfdff).ram(); /* 8k/16k? RAM */ map(0xfe00, 0xfeff).rw(m_ppu, FUNC(dmg_ppu_device::oam_r), FUNC(dmg_ppu_device::oam_w)); /* OAM RAM */ map(0xff00, 0xff0f).rw(FUNC(megaduck_state::gb_io_r), FUNC(megaduck_state::gb_io_w)); /* I/O */ map(0xff10, 0xff1f).rw(FUNC(megaduck_state::megaduck_video_r), FUNC(megaduck_state::megaduck_video_w)); /* video controller */ map(0xff20, 0xff2f).rw(FUNC(megaduck_state::megaduck_sound_r1), FUNC(megaduck_state::megaduck_sound_w1)); /* sound controller pt1 */ map(0xff30, 0xff3f).rw(m_apu, FUNC(gameboy_sound_device::wave_r), FUNC(gameboy_sound_device::wave_w)); /* wave ram */ map(0xff40, 0xff46).rw(FUNC(megaduck_state::megaduck_sound_r2), FUNC(megaduck_state::megaduck_sound_w2)); /* sound controller pt2 */ map(0xff47, 0xff7f).noprw(); /* unused */ map(0xff80, 0xfffe).ram(); /* high RAM */ map(0xffff, 0xffff).rw(FUNC(megaduck_state::gb_ie_r), FUNC(megaduck_state::gb_ie_w)); /* interrupt enable register */ } static INPUT_PORTS_START( gameboy ) PORT_START("INPUTS") PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_NAME("Left") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_NAME("Right") PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_NAME("Up") PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_NAME("Down") PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_NAME("Button A") PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Button B") PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START) PORT_NAME("Start") PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SELECT) PORT_NAME("Select") PORT_START("SKIP_CHECK") PORT_CONFNAME( 0x01, 0x00, "[HACK] Skip BIOS Logo check" ) PORT_CONFSETTING( 0x00, DEF_STR( Off ) ) PORT_CONFSETTING( 0x01, DEF_STR( On ) ) INPUT_PORTS_END static void gb_cart(device_slot_interface &device) { device.option_add_internal("rom", GB_STD_ROM); device.option_add_internal("rom_mbc1", GB_ROM_MBC1); device.option_add_internal("rom_mbc1col", GB_ROM_MBC1); device.option_add_internal("rom_mbc2", GB_ROM_MBC2); device.option_add_internal("rom_mbc3", GB_ROM_MBC3); device.option_add_internal("rom_huc1", GB_ROM_MBC3); device.option_add_internal("rom_huc3", GB_ROM_MBC3); device.option_add_internal("rom_mbc5", GB_ROM_MBC5); device.option_add_internal("rom_mbc6", GB_ROM_MBC6); device.option_add_internal("rom_mbc7", GB_ROM_MBC7); device.option_add_internal("rom_tama5", GB_ROM_TAMA5); device.option_add_internal("rom_mmm01", GB_ROM_MMM01); device.option_add_internal("rom_m161", GB_ROM_M161); device.option_add_internal("rom_sachen1", GB_ROM_SACHEN1); device.option_add_internal("rom_sachen2", GB_ROM_SACHEN2); device.option_add_internal("rom_wisdom", GB_ROM_WISDOM); device.option_add_internal("rom_yong", GB_ROM_YONG); device.option_add_internal("rom_lasama", GB_ROM_LASAMA); device.option_add_internal("rom_atvrac", GB_ROM_ATVRAC); device.option_add_internal("rom_camera", GB_ROM_CAMERA); device.option_add_internal("rom_188in1", GB_ROM_188IN1); device.option_add_internal("rom_sintax", GB_ROM_SINTAX); device.option_add_internal("rom_chong", GB_ROM_CHONGWU); device.option_add_internal("rom_licheng", GB_ROM_LICHENG); device.option_add_internal("rom_digimon", GB_ROM_DIGIMON); device.option_add_internal("rom_rock8", GB_ROM_ROCKMAN8); device.option_add_internal("rom_sm3sp", GB_ROM_SM3SP); // device.option_add_internal("rom_dkong5", GB_ROM_DKONG5); // device.option_add_internal("rom_unk01", GB_ROM_UNK01); } static void megaduck_cart(device_slot_interface &device) { device.option_add_internal("rom", MEGADUCK_ROM); } static const unsigned char palette_gb[] = { /* Simple black and white palette */ /* 0xFF,0xFF,0xFF, 0xB0,0xB0,0xB0, 0x60,0x60,0x60, 0x00,0x00,0x00 */ /* Possibly needs a little more green in it */ 0xFF,0xFB,0x87, /* Background */ 0xB1,0xAE,0x4E, /* Light */ 0x84,0x80,0x4E, /* Medium */ 0x4E,0x4E,0x4E, /* Dark */ /* Palette for Game Boy Pocket/Light */ 0xC4,0xCF,0xA1, /* Background */ 0x8B,0x95,0x6D, /* Light */ 0x6B,0x73,0x53, /* Medium */ 0x41,0x41,0x41, /* Dark */ }; static const unsigned char palette_megaduck[] = { 0x6B, 0xA6, 0x4A, 0x43, 0x7A, 0x63, 0x25, 0x59, 0x55, 0x12, 0x42, 0x4C }; /* Initialise the palettes */ PALETTE_INIT_MEMBER(gb_state, gb) { for (int i = 0; i < 4; i++) palette.set_pen_color(i, palette_gb[i * 3 + 0], palette_gb[i * 3 + 1], palette_gb[i * 3 + 2]); } PALETTE_INIT_MEMBER(gb_state, gbp) { for (int i = 0; i < 4; i++) palette.set_pen_color(i, palette_gb[(i + 4) * 3 + 0], palette_gb[(i + 4) * 3 + 1], palette_gb[(i + 4) * 3 + 2]); } PALETTE_INIT_MEMBER(gb_state, sgb) { int r, g, b; for (int i = 0; i < 32768; i++) { r = (i & 0x1F) << 3; g = ((i >> 5) & 0x1F) << 3; b = ((i >> 10) & 0x1F) << 3; palette.set_pen_color(i, r, g, b); } } PALETTE_INIT_MEMBER(gb_state, gbc) { int r, g, b; for (int i = 0; i < 32768; i++) { r = (i & 0x1F) << 3; g = ((i >> 5) & 0x1F) << 3; b = ((i >> 10) & 0x1F) << 3; palette.set_pen_color(i, r, g, b); } } PALETTE_INIT_MEMBER(megaduck_state, megaduck) { for (int i = 0; i < 4; i++) palette.set_pen_color(i, palette_megaduck[i * 3 + 0], palette_megaduck[i * 3 + 1], palette_megaduck[i * 3 + 2]); } MACHINE_CONFIG_START(gb_state::gameboy) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", LR35902, XTAL(4'194'304)) MCFG_DEVICE_PROGRAM_MAP(gameboy_map) MCFG_LR35902_TIMER_CB( WRITE8( *this, gb_state, gb_timer_callback ) ) MCFG_LR35902_HALT_BUG /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_refresh_hz(DMG_FRAMES_PER_SECOND); screen.set_vblank_time(0); screen.set_screen_update("ppu", FUNC(dmg_ppu_device::screen_update)); screen.set_palette("palette"); // screen.set_size(20*8, 18*8); screen.set_size(458, 154); screen.set_visarea(0*8, 20*8-1, 0*8, 18*8-1); MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfxdecode_device::empty) MCFG_PALETTE_ADD("palette", 4) MCFG_PALETTE_INIT_OWNER(gb_state,gb) MCFG_DEVICE_ADD("ppu", DMG_PPU, "maincpu") /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); MCFG_DEVICE_ADD("apu", DMG_APU, XTAL(4'194'304)) MCFG_SOUND_ROUTE(0, "lspeaker", 0.50) MCFG_SOUND_ROUTE(1, "rspeaker", 0.50) /* cartslot */ MCFG_GB_CARTRIDGE_ADD("gbslot", gb_cart, nullptr) MCFG_SOFTWARE_LIST_ADD("cart_list","gameboy") MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("gbc_list","gbcolor") MACHINE_CONFIG_END MACHINE_CONFIG_START(gb_state::supergb) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", LR35902, 4295454) /* 4.295454 MHz, derived from SNES xtal */ MCFG_DEVICE_PROGRAM_MAP(sgb_map) MCFG_LR35902_TIMER_CB( WRITE8(*this, gb_state, gb_timer_callback ) ) MCFG_LR35902_HALT_BUG MCFG_MACHINE_START_OVERRIDE(gb_state, sgb) MCFG_MACHINE_RESET_OVERRIDE(gb_state, sgb) /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_physical_aspect(4, 3); // runs on a TV, not an LCD screen.set_refresh_hz(SGB_FRAMES_PER_SECOND); screen.set_vblank_time(0); screen.set_screen_update("ppu", FUNC(dmg_ppu_device::screen_update)); screen.set_palette("palette"); screen.set_size(32*8, 28*8); screen.set_visarea(0*8, 32*8-1, 0*8, 28*8-1); MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfxdecode_device::empty) MCFG_PALETTE_ADD("palette", 32768) MCFG_PALETTE_INIT_OWNER(gb_state,sgb) MCFG_DEVICE_ADD("ppu", SGB_PPU, "maincpu") /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); MCFG_DEVICE_ADD("apu", DMG_APU, 4295454) MCFG_SOUND_ROUTE(0, "lspeaker", 0.50) MCFG_SOUND_ROUTE(1, "rspeaker", 0.50) /* cartslot */ MCFG_GB_CARTRIDGE_ADD("gbslot", gb_cart, nullptr) MCFG_SOFTWARE_LIST_ADD("cart_list","gameboy") MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("gbc_list","gbcolor") MACHINE_CONFIG_END MACHINE_CONFIG_START(gb_state::supergb2) gameboy(config); /* basic machine hardware */ MCFG_DEVICE_MODIFY("maincpu") MCFG_DEVICE_PROGRAM_MAP(sgb_map) MCFG_MACHINE_START_OVERRIDE(gb_state, sgb) MCFG_MACHINE_RESET_OVERRIDE(gb_state, sgb) /* video hardware */ screen_device &screen(*subdevice("screen")); screen.set_physical_aspect(4, 3); // runs on a TV, not an LCD screen.set_size(32*8, 28*8); screen.set_visarea(0*8, 32*8-1, 0*8, 28*8-1); MCFG_PALETTE_MODIFY("palette") MCFG_PALETTE_ENTRIES(32768) MCFG_PALETTE_INIT_OWNER(gb_state,sgb) MCFG_DEVICE_REMOVE("ppu") MCFG_DEVICE_ADD("ppu", SGB_PPU, "maincpu") MACHINE_CONFIG_END MACHINE_CONFIG_START(gb_state::gbpocket) gameboy(config); /* video hardware */ MCFG_PALETTE_MODIFY("palette") MCFG_PALETTE_INIT_OWNER(gb_state,gbp) MCFG_DEVICE_REMOVE("ppu") MCFG_DEVICE_ADD("ppu", MGB_PPU, "maincpu") MACHINE_CONFIG_END MACHINE_CONFIG_START(gb_state::gbcolor) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", LR35902, XTAL(4'194'304)) // todo XTAL(8'388'000) MCFG_DEVICE_PROGRAM_MAP(gbc_map) MCFG_LR35902_TIMER_CB( WRITE8(*this, gb_state, gb_timer_callback ) ) MCFG_MACHINE_START_OVERRIDE(gb_state,gbc) MCFG_MACHINE_RESET_OVERRIDE(gb_state,gbc) /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_refresh_hz(DMG_FRAMES_PER_SECOND); screen.set_vblank_time(0); screen.set_screen_update("ppu", FUNC(dmg_ppu_device::screen_update)); screen.set_palette("palette"); // screen.set_size(20*8, 18*8); screen.set_size(458, 154); screen.set_visarea(0*8, 20*8-1, 0*8, 18*8-1); MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfxdecode_device::empty) MCFG_PALETTE_ADD("palette", 32768) MCFG_PALETTE_INIT_OWNER(gb_state,gbc) MCFG_DEVICE_ADD("ppu", CGB_PPU, "maincpu") /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); MCFG_DEVICE_ADD("apu", CGB04_APU, XTAL(4'194'304)) MCFG_SOUND_ROUTE(0, "lspeaker", 0.50) MCFG_SOUND_ROUTE(1, "rspeaker", 0.50) /* internal ram */ RAM(config, RAM_TAG).set_default_size("48K"); /* 2 pages of 8KB VRAM, 8 pages of 4KB RAM */ /* cartslot */ MCFG_GB_CARTRIDGE_ADD("gbslot", gb_cart, nullptr) MCFG_SOFTWARE_LIST_ADD("cart_list","gbcolor") MCFG_SOFTWARE_LIST_COMPATIBLE_ADD("gb_list","gameboy") MACHINE_CONFIG_END MACHINE_CONFIG_START(megaduck_state::megaduck) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", LR35902, XTAL(4'194'304)) /* 4.194304 MHz */ MCFG_DEVICE_PROGRAM_MAP(megaduck_map) MCFG_LR35902_TIMER_CB( WRITE8(*this, gb_state, gb_timer_callback ) ) MCFG_LR35902_HALT_BUG /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_refresh_hz(DMG_FRAMES_PER_SECOND); screen.set_vblank_time(0); screen.set_screen_update("ppu", FUNC(dmg_ppu_device::screen_update)); screen.set_palette("palette"); screen.set_size(20*8, 18*8); screen.set_visarea(0*8, 20*8-1, 0*8, 18*8-1); MCFG_MACHINE_START_OVERRIDE(megaduck_state, megaduck) MCFG_MACHINE_RESET_OVERRIDE(megaduck_state, megaduck) MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfxdecode_device::empty) MCFG_PALETTE_ADD("palette", 4) MCFG_PALETTE_INIT_OWNER(megaduck_state,megaduck) MCFG_DEVICE_ADD("ppu", DMG_PPU, "maincpu") /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); MCFG_DEVICE_ADD("apu", DMG_APU, XTAL(4'194'304)) MCFG_SOUND_ROUTE(0, "lspeaker", 0.50) MCFG_SOUND_ROUTE(1, "rspeaker", 0.50) /* cartslot */ MCFG_MEGADUCK_CARTRIDGE_ADD("duckslot", megaduck_cart, nullptr) MCFG_SOFTWARE_LIST_ADD("cart_list", "megaduck") MACHINE_CONFIG_END /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START(gameboy) ROM_REGION(0x0100, "maincpu", 0) ROM_SYSTEM_BIOS(0, "dmg", "DMG vX") ROMX_LOAD("dmg_boot.bin", 0x0000, 0x0100, CRC(59c8598e) SHA1(4ed31ec6b0b175bb109c0eb5fd3d193da823339f), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "dmg_v0", "DMG v0") ROMX_LOAD("dmg_v0.rom", 0x0000, 0x0100, CRC(c2f5cc97) SHA1(8bd501e31921e9601788316dbd3ce9833a97bcbc), ROM_BIOS(1)) ROM_END ROM_START(supergb) ROM_REGION(0x0100, "maincpu", 0) ROM_LOAD("sgb_boot.bin", 0x0000, 0x0100, CRC(ec8a83b9) SHA1(aa2f50a77dfb4823da96ba99309085a3c6278515)) ROM_END ROM_START(supergb2 ) ROM_REGION(0x0100, "maincpu", 0) ROM_LOAD("sgb2_boot.bin", 0x0000, 0x0100, CRC(53d0dd63) SHA1(93407ea10d2f30ab96a314d8eca44fe160aea734)) ROM_END ROM_START(gbpocket ) ROM_REGION(0x0100, "maincpu", 0) ROM_LOAD("mgb_boot.bin", 0x0000, 0x0100, CRC(e6920754) SHA1(4e68f9da03c310e84c523654b9026e51f26ce7f0)) ROM_END ROM_START(gbcolor) ROM_REGION(0x800, "maincpu", 0) ROM_LOAD("gbc_boot.1", 0x0000, 0x0100, CRC(779ea374) SHA1(e4b40c9fd593a97a1618cfb2696f290cf9596a62)) /* Bootstrap code part 1 */ ROM_LOAD("gbc_boot.2", 0x0100, 0x0700, CRC(f741807d) SHA1(f943b1e0b640cf1d371e1d8f0ada69af03ebb396)) /* Bootstrap code part 2 */ ROM_END ROM_START(megaduck) ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF) ROM_END ROM_START(gamefgtr) ROM_REGION(0x0100, "maincpu", 0) ROM_LOAD("gamefgtr.bin", 0x0000, 0x0100, CRC(908ba8de) SHA1(a4a36f71bf1b3b587df620d48ae940af93a982a5)) ROM_END /* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME */ CONS(1990, gameboy, 0, 0, gameboy, gameboy, gb_state, empty_init, "Nintendo", "Game Boy", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) CONS(1994, supergb, gameboy, 0, supergb, gameboy, gb_state, empty_init, "Nintendo", "Super Game Boy", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) CONS(1998, supergb2, gameboy, 0, supergb2, gameboy, gb_state, empty_init, "Nintendo", "Super Game Boy 2", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) CONS(1996, gbpocket, gameboy, 0, gbpocket, gameboy, gb_state, empty_init, "Nintendo", "Game Boy Pocket", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE) CONS(1998, gbcolor, 0, 0, gbcolor, gameboy, gb_state, empty_init, "Nintendo", "Game Boy Color", MACHINE_IMPERFECT_SOUND | MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE) // Sound is not 100% yet, it generates some sounds which could be ok. Since we're lacking a real system there's no way to verify. CONS(1993, megaduck, 0, 0, megaduck, gameboy, megaduck_state, empty_init, "Welback Holdings (Timlex International) / Creatronic / Videojet / Cougar USA", "Mega Duck / Cougar Boy", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) // http://blog.gg8.se/wordpress/2012/11/11/gameboy-clone-game-fighter-teardown/ CONS(1993, gamefgtr, gameboy, 0, gameboy, gameboy, gb_state, empty_init, "bootleg", "Game Fighter (bootleg)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE)