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Merge pull request #7674 from wilbertpol/gg_xterminator

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Promoted to working: Gamegear X-Terminator
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ajrhacker 2021-01-17 14:23:07 -05:00 committed by GitHub
commit c3e15affc3
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 194 additions and 4 deletions
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10
hash/gamegear.xml
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@ -10069,25 +10069,31 @@ a certain item) -->
</part>
</software>
<software name="xtermin" supported="no">
<software name="xtermin">
<description>X-Terminator v2.1 for Game Gear (USA, Euro)</description>
<year>19??</year>
<publisher>&lt;unknown&gt;</publisher>
<part name="cart" interface="gamegear_cart">
<feature name="slot" value="xterminator" />
<dataarea name="rom" size="8192">
<rom name="x-terminator v2.1.bin" size="8192" crc="0f448220" sha1="b6664c21a99a96392fe79237d326e96ac0bdd52a"/>
</dataarea>
<dataarea name="ram" size="8192">
</dataarea>
</part>
</software>
<software name="xterminj" cloneof="xtermin" supported="no">
<software name="xterminj" cloneof="xtermin">
<description>X-Terminator v2.1J for Game Gear (Jpn)</description>
<year>19??</year>
<publisher>&lt;unknown&gt;</publisher>
<part name="cart" interface="gamegear_cart">
<feature name="slot" value="xterminator" />
<dataarea name="rom" size="8192">
<rom name="x-terminator v2.1j.bin" size="8192" crc="e498090d" sha1="ee2123cc2addd9e48d3f4dc909334504c5b330ab"/>
</dataarea>
<dataarea name="ram" size="8192">
</dataarea>
</part>
</software>

145
src/devices/bus/sega8/rom.cpp
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@ -41,6 +41,7 @@ DEFINE_DEVICE_TYPE(SEGA8_ROM_HICOM, sega8_hicom_device, "sega8_hic
DEFINE_DEVICE_TYPE(SEGA8_ROM_KOREAN, sega8_korean_device, "sega8_korean", "SMS Korean Carts")
DEFINE_DEVICE_TYPE(SEGA8_ROM_KOREAN_NB, sega8_korean_nb_device, "sega8_korean_nb", "SMS Korean No-Bank Mapper Carts")
DEFINE_DEVICE_TYPE(SEGA8_ROM_SEOJIN, sega8_seojin_device, "sega8_seojin", "SMS Seo Jin Multi-cart")
DEFINE_DEVICE_TYPE(SEGA8_ROM_X_TERMINATOR, sega8_x_terminator_device, "sega8_x_terminator", "GG X-Terminator")
// Specific SC-3000 cart types
DEFINE_DEVICE_TYPE(SEGA8_ROM_MULTICART, sega8_multicart_device, "sega8_multicart", "SC-3000 MkII Multicart Cart")
@ -1135,3 +1136,147 @@ void sega8_megacart_device::write_io(offs_t offset, uint8_t data)
if ((offset & 0xe0) == 0xe0)
m_block = (data & 0x1f) | (data & 0xc0) >> 1;
}
/*-------------------------------------------------
GG X-Terminator
The cartridge has a switch to choose NORMAL or ACTION mode
and a RESET button.
The X-Terminator has logic to switch between the X-Terminator's
ROM and game ROM when $0038 is read.
When starting up the X-Terminator's ROM is active. In NORMAL
mode any read of $38 switches to game ROM. In ACTION mode any
read of $38 switches between game ROM and X-Terminator ROM (this
allows the X-Terminator to inject cheat codes during IRQs).
While running a game the RESET button is used to get back
into the X-Terminator to search for cheat codes.
-------------------------------------------------*/
sega8_x_terminator_device::sega8_x_terminator_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: sega8_rom_device(mconfig, SEGA8_ROM_X_TERMINATOR, tag, owner, clock)
, m_subslot(*this, "subslot")
, m_switch(*this, "SWITCH")
, m_reset(*this, "RESET")
, m_active(true)
{
}
static INPUT_PORTS_START( x_terminator )
PORT_START("SWITCH")
PORT_DIPNAME( 0x01, 0x00, "NORMAL/ACTION" )
PORT_DIPSETTING( 0x00, "NORMAL" )
PORT_DIPSETTING( 0x01, "ACTION" )
PORT_START("RESET")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("Reset")
INPUT_PORTS_END
ioport_constructor sega8_x_terminator_device::device_input_ports() const
{
return INPUT_PORTS_NAME( x_terminator );
}
void sega8_x_terminator_device::device_add_mconfig(machine_config &config)
{
GAMEGEAR_CART_SLOT(config, "subslot", gg_cart, nullptr);
SOFTWARE_LIST(config, "cart_list").set_original("gamegear");
}
void sega8_x_terminator_device::device_start()
{
save_item(NAME(m_active));
}
void sega8_x_terminator_device::device_reset()
{
m_active = true;
}
uint8_t sega8_x_terminator_device::read_cart(offs_t offset)
{
if (offset == 0x38 && !machine().side_effects_disabled())
{
if (BIT(m_switch->read(), 0))
{
// ACTION
m_active = !m_active;
}
else if (!BIT(m_reset->read(), 0))
{
// RESET button pressed
m_active = true;
}
else
{
// NORMAL
m_active = false;
}
}
if (m_active)
{
// RAM at 0x2000-0x3fff
if (offset >= 0x2000 && offset < 0x4000)
return m_ram[offset & 0x1fff];
// Check RESET button
if (offset == 0x0007)
return m_reset->read();
return m_rom[offset % m_rom_size];
}
else
{
// Pass-through to inserted game cartridge
return m_subslot->read_cart(offset);
}
}
void sega8_x_terminator_device::write_cart(offs_t offset, uint8_t data)
{
if (m_active)
{
// RAM at 0x2000-0x23fff
if (offset >= 0x2000 && offset < 0x4000)
m_ram[offset & 0x1fff] = data;
}
else
{
// Pass-through to inserted game cartridge
m_subslot->write_cart(offset, data);
}
}
void sega8_x_terminator_device::write_mapper(offs_t offset, uint8_t data)
{
// Pass-through to inserted game cartridge
m_subslot->write_mapper(offset, data);
}
uint8_t sega8_x_terminator_device::read_ram(offs_t offset)
{
// Pass-through to inserted game cartridge
return m_subslot->read_ram(offset);
}
void sega8_x_terminator_device::write_ram(offs_t offset, uint8_t data)
{
// Pass-through to inserted game cartridge
m_subslot->write_ram(offset, data);
}
uint8_t sega8_x_terminator_device::read_io(offs_t offset)
{
// Pass-through to inserted game cartridge
return m_subslot->read_io(offset);
}
void sega8_x_terminator_device::write_io(offs_t offset, uint8_t data)
{
// Pass-through to inserted game cartridge
m_subslot->write_io(offset, data);
}

28
src/devices/bus/sega8/rom.h
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@ -450,6 +450,33 @@ private:
uint8_t m_block;
};
class sega8_x_terminator_device : public sega8_rom_device
{
public:
sega8_x_terminator_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ioport_constructor device_input_ports() const override;
// reading and writing
virtual uint8_t read_cart(offs_t offset) override;
virtual void write_cart(offs_t offset, uint8_t data) override;
virtual void write_mapper(offs_t offset, uint8_t data) override;
virtual uint8_t read_ram(offs_t offset) override;
virtual void write_ram(offs_t offset, uint8_t data) override;
virtual uint8_t read_io(offs_t offset) override;
virtual void write_io(offs_t offset, uint8_t data) override;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
required_device<sega8_cart_slot_device> m_subslot;
required_ioport m_switch;
required_ioport m_reset;
bool m_active;
};
// device type definition
DECLARE_DEVICE_TYPE(SEGA8_ROM_STD, sega8_rom_device)
@ -472,5 +499,6 @@ DECLARE_DEVICE_TYPE(SEGA8_ROM_KOREAN_NB, sega8_korean_nb_device)
DECLARE_DEVICE_TYPE(SEGA8_ROM_SEOJIN, sega8_seojin_device)
DECLARE_DEVICE_TYPE(SEGA8_ROM_MULTICART, sega8_multicart_device)
DECLARE_DEVICE_TYPE(SEGA8_ROM_MEGACART, sega8_megacart_device)
DECLARE_DEVICE_TYPE(SEGA8_ROM_X_TERMINATOR, sega8_x_terminator_device)
#endif // MAME_BUS_SEGA8_ROM_H

12
src/devices/bus/sega8/sega8_slot.cpp
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@ -232,7 +232,8 @@ static const sega8_slot slot_list[] =
{ SEGA8_DAHJEE_TYPEB, "dahjee_typeb" },
{ SEGA8_SEOJIN, "seojin" },
{ SEGA8_MULTICART, "multicart" },
{ SEGA8_MEGACART, "megacart" }
{ SEGA8_MEGACART, "megacart" },
{ SEGA8_X_TERMINATOR, "xterminator" }
};
static int sega8_get_pcb_id(const char *slot)
@ -357,6 +358,12 @@ void sega8_cart_slot_device::setup_ram()
m_cart->ram_alloc(0x10000);
m_cart->set_has_battery(false);
}
else if (m_type == SEGA8_X_TERMINATOR)
{
// X-Terminator seems to have 8192 bytes of RAM
// Unknown if the RAM is battery backed
m_cart->ram_alloc(0x2000);
}
else
{
// for generic carts loaded from fullpath we have no way to know exactly if there was RAM,
@ -646,6 +653,8 @@ int sega8_cart_slot_device::get_cart_type(const uint8_t *ROM, uint32_t len) cons
if (len == 0x400000)
type = SEGA8_MEGACART;
if (len == 0x2000)
type = SEGA8_X_TERMINATOR;
return type;
}
@ -938,4 +947,5 @@ void gg_cart(device_slot_interface &device)
device.option_add_internal("eeprom", SEGA8_ROM_EEPROM);
device.option_add_internal("codemasters", SEGA8_ROM_CODEMASTERS);
device.option_add_internal("mgear", SEGA8_ROM_MGEAR);
device.option_add_internal("xterminator", SEGA8_ROM_X_TERMINATOR);
}

3
src/devices/bus/sega8/sega8_slot.h
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@ -34,7 +34,8 @@ enum
SEGA8_DAHJEE_TYPEB,
SEGA8_SEOJIN,
SEGA8_MULTICART,
SEGA8_MEGACART
SEGA8_MEGACART,
SEGA8_X_TERMINATOR
};