// 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 "rendlay.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(this, 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(this, 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(this, 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(this, 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(this, FUNC(gb_state::gb_io2_w)); /* Video controller & BIOS flip-flop */
map(0xff80, 0xfffe).ram(); /* High RAM */
map(0xffff, 0xffff).rw(this, 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(this, 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(this, 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(this, 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(this, 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(this, FUNC(gb_state::gb_io2_w)); /* Video controller & BIOS flip-flop */
map(0xff80, 0xfffe).ram(); /* High RAM */
map(0xffff, 0xffff).rw(this, 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(this, 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(this, 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(this, 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(this, 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(this, 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(this, 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(this, 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(this, 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(this, FUNC(megaduck_state::gb_io_r), FUNC(megaduck_state::gb_io_w)); /* I/O */
map(0xff10, 0xff1f).rw(this, FUNC(megaduck_state::megaduck_video_r), FUNC(megaduck_state::megaduck_video_w)); /* video controller */
map(0xff20, 0xff2f).rw(this, 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(this, 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(this, 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 */
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(DMG_FRAMES_PER_SECOND)
MCFG_SCREEN_VBLANK_TIME(0)
MCFG_SCREEN_UPDATE_DEVICE("ppu", dmg_ppu_device, screen_update)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEFAULT_LAYOUT(layout_lcd)
// MCFG_SCREEN_SIZE(20*8, 18*8)
MCFG_SCREEN_SIZE( 458, 154 )
MCFG_SCREEN_VISIBLE_AREA(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 */
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(SGB_FRAMES_PER_SECOND)
MCFG_SCREEN_VBLANK_TIME(0)
MCFG_SCREEN_UPDATE_DEVICE("ppu", dmg_ppu_device, screen_update)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEFAULT_LAYOUT(layout_horizont) /* runs on a TV, not an LCD */
MCFG_SCREEN_SIZE(32*8, 28*8)
MCFG_SCREEN_VISIBLE_AREA(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 */
MCFG_DEFAULT_LAYOUT(layout_horizont) /* runs on a TV, not an LCD */
MCFG_SCREEN_MODIFY("screen")
MCFG_SCREEN_SIZE(32*8, 28*8)
MCFG_SCREEN_VISIBLE_AREA(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 */
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(DMG_FRAMES_PER_SECOND)
MCFG_SCREEN_VBLANK_TIME(0)
MCFG_SCREEN_UPDATE_DEVICE("ppu", dmg_ppu_device, screen_update)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEFAULT_LAYOUT(layout_lcd)
// MCFG_SCREEN_SIZE(20*8, 18*8)
MCFG_SCREEN_SIZE( 458, 154 )
MCFG_SCREEN_VISIBLE_AREA(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 */
MCFG_RAM_ADD(RAM_TAG)
MCFG_RAM_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 */
MCFG_SCREEN_ADD("screen", LCD)
MCFG_SCREEN_REFRESH_RATE(DMG_FRAMES_PER_SECOND)
MCFG_SCREEN_VBLANK_TIME(0)
MCFG_SCREEN_PALETTE("palette")
MCFG_MACHINE_START_OVERRIDE(megaduck_state, megaduck)
MCFG_MACHINE_RESET_OVERRIDE(megaduck_state, megaduck)
MCFG_SCREEN_UPDATE_DEVICE("ppu", dmg_ppu_device, screen_update)
MCFG_SCREEN_SIZE(20*8, 18*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 20*8-1, 0*8, 18*8-1)
MCFG_DEFAULT_LAYOUT(layout_lcd)
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(1))
ROM_SYSTEM_BIOS(1, "dmg_v0", "DMG v0")
ROMX_LOAD("dmg_v0.rom", 0x0000, 0x0100, CRC(c2f5cc97) SHA1(8bd501e31921e9601788316dbd3ce9833a97bcbc), ROM_BIOS(2))
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)