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-// 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(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(offset);
- }
- else
- return 0xff;
- }
-}
-
-READ8_MEMBER(gb_state::gbc_cart_r)
-{
- if (m_bios_disable && m_cartslot)
- return m_cartslot->read_rom(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(offset);
- }
- else
- return 0xff;
- }
-}
-
-WRITE8_MEMBER(gb_state::gb_bank_w)
-{
- if (m_cartslot)
- m_cartslot->write_bank(offset, data);
-}
-
-READ8_MEMBER(gb_state::gb_ram_r)
-{
- if (m_cartslot)
- return m_cartslot->read_ram(offset);
- else
- return 0xff;
-}
-
-WRITE8_MEMBER(gb_state::gb_ram_w)
-{
- if (m_cartslot)
- m_cartslot->write_ram(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(offset);
- else
- return 0xff;
-}
-
-WRITE8_MEMBER(megaduck_state::bank1_w)
-{
- if (m_cartslot)
- m_cartslot->write_bank(offset, data);
-}
-
-WRITE8_MEMBER(megaduck_state::bank2_w)
-{
- if (m_cartslot)
- m_cartslot->write_ram(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 constexpr rgb_t 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 constexpr rgb_t palette_megaduck[] = {
- { 0x6b, 0xa6, 0x4a }, { 0x43, 0x7a, 0x63 }, { 0x25, 0x59, 0x55 }, { 0x12, 0x42, 0x4c }
-};
-
-// Initialise the palettes
-void gb_state::gb_palette(palette_device &palette) const
-{
- for (int i = 0; i < 4; i++)
- palette.set_pen_color(i, palette_gb[i]);
-}
-
-void gb_state::gbp_palette(palette_device &palette) const
-{
- for (int i = 0; i < 4; i++)
- palette.set_pen_color(i, palette_gb[i + 4]);
-}
-
-void gb_state::sgb_palette(palette_device &palette) const
-{
- for (int i = 0; i < 32768; i++)
- {
- int const r = i & 0x1f;
- int const g = (i >> 5) & 0x1f;
- int const b = (i >> 10) & 0x1f;
- palette.set_pen_color(i, pal5bit(r), pal5bit(g), pal5bit(b));
- }
-}
-
-void gb_state::gbc_palette(palette_device &palette) const
-{
- for (int i = 0; i < 32768; i++)
- {
- int const r = i & 0x1f;
- int const g = (i >> 5) & 0x1f;
- int const b = (i >> 10) & 0x1f;
- palette.set_pen_color(i, pal5bit(r), pal5bit(g), pal5bit(b));
- }
-}
-
-void megaduck_state::megaduck_palette(palette_device &palette) const
-{
- for (int i = 0; i < 4; i++)
- palette.set_pen_color(i, palette_megaduck[i]);
-}
-
-
-void gb_state::gameboy(machine_config &config)
-{
- /* basic machine hardware */
- LR35902(config, m_maincpu, XTAL(4'194'304));
- m_maincpu->set_addrmap(AS_PROGRAM, &gb_state::gameboy_map);
- m_maincpu->timer_cb().set(FUNC(gb_state::gb_timer_callback));
- m_maincpu->set_halt_bug(true);
-
- /* 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(m_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);
-
- GFXDECODE(config, "gfxdecode", m_palette, gfxdecode_device::empty);
- PALETTE(config, m_palette, FUNC(gb_state::gb_palette), 4);
-
- DMG_PPU(config, m_ppu, m_maincpu);
-
- /* sound hardware */
- SPEAKER(config, "lspeaker").front_left();
- SPEAKER(config, "rspeaker").front_right();
- DMG_APU(config, m_apu, XTAL(4'194'304));
- m_apu->add_route(0, "lspeaker", 0.50);
- m_apu->add_route(1, "rspeaker", 0.50);
-
- /* cartslot */
- GB_CART_SLOT(config, m_cartslot, gb_cart, nullptr);
-
- SOFTWARE_LIST(config, "cart_list").set_original("gameboy");
- SOFTWARE_LIST(config, "gbc_list").set_compatible("gbcolor");
-}
-
-void gb_state::supergb(machine_config &config)
-{
- /* basic machine hardware */
- LR35902(config, m_maincpu, 4295454); /* 4.295454 MHz, derived from SNES xtal */
- m_maincpu->set_addrmap(AS_PROGRAM, &gb_state::sgb_map);
- m_maincpu->timer_cb().set(FUNC(gb_state::gb_timer_callback));
- m_maincpu->set_halt_bug(true);
-
- 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(m_palette);
- screen.set_size(32*8, 28*8);
- screen.set_visarea(0*8, 32*8-1, 0*8, 28*8-1);
-
- GFXDECODE(config, "gfxdecode", m_palette, gfxdecode_device::empty);
- PALETTE(config, m_palette, FUNC(gb_state::sgb_palette), 32768);
-
- SGB_PPU(config, m_ppu, m_maincpu);
-
- /* sound hardware */
- SPEAKER(config, "lspeaker").front_left();
- SPEAKER(config, "rspeaker").front_right();
- DMG_APU(config, m_apu, 4295454);
- m_apu->add_route(0, "lspeaker", 0.50);
- m_apu->add_route(1, "rspeaker", 0.50);
-
- /* cartslot */
- GB_CART_SLOT(config, m_cartslot, gb_cart, nullptr);
-
- SOFTWARE_LIST(config, "cart_list").set_original("gameboy");
- SOFTWARE_LIST(config, "gbc_list").set_compatible("gbcolor");
-}
-
-void gb_state::supergb2(machine_config &config)
-{
- gameboy(config);
-
- /* basic machine hardware */
- m_maincpu->set_addrmap(AS_PROGRAM, &gb_state::sgb_map);
-
- MCFG_MACHINE_START_OVERRIDE(gb_state, sgb)
- MCFG_MACHINE_RESET_OVERRIDE(gb_state, sgb)
-
- /* video hardware */
- screen_device &screen(*subdevice<screen_device>("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);
-
- m_palette->set_entries(32768);
- m_palette->set_init(FUNC(gb_state::sgb_palette));
-
- SGB_PPU(config.replace(), m_ppu, m_maincpu);
-}
-
-void gb_state::gbpocket(machine_config &config)
-{
- gameboy(config);
-
- /* video hardware */
- m_palette->set_init(FUNC(gb_state::gbp_palette));
-
- MGB_PPU(config.replace(), m_ppu, m_maincpu);
-}
-
-void gb_state::gbcolor(machine_config &config)
-{
- /* basic machine hardware */
- LR35902(config, m_maincpu, XTAL(4'194'304)); // todo XTAL(8'388'000)
- m_maincpu->set_addrmap(AS_PROGRAM, &gb_state::gbc_map);
- m_maincpu->timer_cb().set(FUNC(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(m_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);
-
- GFXDECODE(config, "gfxdecode", m_palette, gfxdecode_device::empty);
- PALETTE(config, m_palette, FUNC(gb_state::gbc_palette), 32768);
-
- CGB_PPU(config, m_ppu, m_maincpu);
-
- /* sound hardware */
- SPEAKER(config, "lspeaker").front_left();
- SPEAKER(config, "rspeaker").front_right();
- CGB04_APU(config, m_apu, XTAL(4'194'304));
- m_apu->add_route(0, "lspeaker", 0.50);
- m_apu->add_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 */
- GB_CART_SLOT(config, "gbslot", gb_cart, nullptr);
-
- SOFTWARE_LIST(config, "cart_list").set_original("gbcolor");
- SOFTWARE_LIST(config, "gb_list").set_compatible("gameboy");
-}
-
-void megaduck_state::megaduck(machine_config &config)
-{
- /* basic machine hardware */
- LR35902(config, m_maincpu, XTAL(4'194'304)); /* 4.194304 MHz */
- m_maincpu->set_addrmap(AS_PROGRAM, &megaduck_state::megaduck_map);
- m_maincpu->timer_cb().set(FUNC(gb_state::gb_timer_callback));
- m_maincpu->set_halt_bug(true);
-
- /* 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(m_palette);
- screen.set_size(20*8, 18*8);
- screen.set_visarea(0*8, 20*8-1, 0*8, 18*8-1);
-
- GFXDECODE(config, "gfxdecode", m_palette, gfxdecode_device::empty);
- PALETTE(config, m_palette, FUNC(megaduck_state::megaduck_palette), 4);
-
- DMG_PPU(config, m_ppu, m_maincpu);
-
- /* sound hardware */
- SPEAKER(config, "lspeaker").front_left();
- SPEAKER(config, "rspeaker").front_right();
- DMG_APU(config, m_apu, XTAL(4'194'304));
- m_apu->add_route(0, "lspeaker", 0.50);
- m_apu->add_route(1, "rspeaker", 0.50);
-
- /* cartslot */
- MEGADUCK_CART_SLOT(config, m_cartslot, megaduck_cart, nullptr);
- SOFTWARE_LIST(config, "cart_list").set_original("megaduck");
-}
-
-/***************************************************************************
-
- 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)