diff options
Diffstat (limited to 'src/emu/bus/neogeo/kog_prot.c')
-rw-r--r-- | src/emu/bus/neogeo/kog_prot.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/emu/bus/neogeo/kog_prot.c b/src/emu/bus/neogeo/kog_prot.c new file mode 100644 index 00000000000..4e895068edd --- /dev/null +++ b/src/emu/bus/neogeo/kog_prot.c @@ -0,0 +1,116 @@ +#include "emu.h" +#include "kog_prot.h" + + + +extern const device_type KOG_PROT = &device_creator<kog_prot_device>; + + +kog_prot_device::kog_prot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, KOG_PROT, "NeoGeo King of Gladiator Protection Device", tag, owner, clock, "kog_prot", __FILE__), + m_jumper(*this, "JUMPER") +{ +} + + +void kog_prot_device::device_start() +{ +} + +void kog_prot_device::device_reset() +{ +} + +READ16_MEMBER(kog_prot_device::read_jumper) +{ + return ioport("JUMPER")->read(); +} + +void kog_prot_device::kog_install_protection(cpu_device* maincpu) +{ + /* overlay cartridge ROM */ + maincpu->space(AS_PROGRAM).install_read_handler(0x0ffffe, 0x0fffff, read16_delegate(FUNC(kog_prot_device::read_jumper), this)); +} + + +/* The King of Gladiator (The King of Fighters '97 bootleg) */ + + +/* The protection patching here may be incomplete + Thanks to Razoola for the info */ + +void kog_prot_device::kog_px_decrypt(UINT8* cpurom, UINT32 cpurom_size) +{ + /* the protection chip does some *very* strange things to the rom */ + UINT8 *src = cpurom; + dynamic_buffer dst( 0x600000 ); + UINT16 *rom = (UINT16 *)cpurom; + int i; + static const int sec[] = { 0x3, 0x8, 0x7, 0xC, 0x1, 0xA, 0x6, 0xD }; + + for (i = 0; i < 8; i++){ + memcpy (dst + i * 0x20000, src + sec[i] * 0x20000, 0x20000); + } + + memcpy (dst + 0x0007A6, src + 0x0407A6, 0x000006); + memcpy (dst + 0x0007C6, src + 0x0407C6, 0x000006); + memcpy (dst + 0x0007E6, src + 0x0407E6, 0x000006); + memcpy (dst + 0x090000, src + 0x040000, 0x004000); + memcpy (dst + 0x100000, src + 0x200000, 0x400000); + memcpy (src, dst, 0x600000); + + for (i = 0x90000/2; i < 0x94000/2; i++){ + if (((rom[i]&0xFFBF) == 0x4EB9 || rom[i] == 0x43F9) && !rom[i + 1]) + rom[i + 1] = 0x0009; + + if (rom[i] == 0x4EB8) + rom[i] = 0x6100; + } + + rom[0x007A8/2] = 0x0009; + rom[0x007C8/2] = 0x0009; + rom[0x007E8/2] = 0x0009; + rom[0x93408/2] = 0xF168; + rom[0x9340C/2] = 0xFB7A; + rom[0x924AC/2] = 0x0009; + rom[0x9251C/2] = 0x0009; + rom[0x93966/2] = 0xFFDA; + rom[0x93974/2] = 0xFFCC; + rom[0x93982/2] = 0xFFBE; + rom[0x93990/2] = 0xFFB0; + rom[0x9399E/2] = 0xFFA2; + rom[0x939AC/2] = 0xFF94; + rom[0x939BA/2] = 0xFF86; + rom[0x939C8/2] = 0xFF78; + rom[0x939D4/2] = 0xFA5C; + rom[0x939E0/2] = 0xFA50; + rom[0x939EC/2] = 0xFA44; + rom[0x939F8/2] = 0xFA38; + rom[0x93A04/2] = 0xFA2C; + rom[0x93A10/2] = 0xFA20; + rom[0x93A1C/2] = 0xFA14; + rom[0x93A28/2] = 0xFA08; + rom[0x93A34/2] = 0xF9FC; + rom[0x93A40/2] = 0xF9F0; + rom[0x93A4C/2] = 0xFD14; + rom[0x93A58/2] = 0xFD08; + rom[0x93A66/2] = 0xF9CA; + rom[0x93A72/2] = 0xF9BE; + +} + + +static INPUT_PORTS_START( kog ) + /* a jumper on the pcb overlays a ROM address, very strange but that's how it works. */ + PORT_START("JUMPER") + PORT_DIPNAME( 0x0001, 0x0001, "Title Language" ) PORT_DIPLOCATION("CART-JUMPER:1") + PORT_DIPSETTING( 0x0001, DEF_STR( English ) ) + PORT_DIPSETTING( 0x0000, "Non-English" ) + PORT_BIT( 0x00fe, IP_ACTIVE_HIGH, IPT_UNUSED ) + PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED ) +INPUT_PORTS_END + +ioport_constructor kog_prot_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( kog ); +} |