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Diffstat (limited to 'src/devices/bus/neogeo/kog_prot.cpp')
-rw-r--r--src/devices/bus/neogeo/kog_prot.cpp118
1 files changed, 118 insertions, 0 deletions
diff --git a/src/devices/bus/neogeo/kog_prot.cpp b/src/devices/bus/neogeo/kog_prot.cpp
new file mode 100644
index 00000000000..d3caaff3e15
--- /dev/null
+++ b/src/devices/bus/neogeo/kog_prot.cpp
@@ -0,0 +1,118 @@
+// license:BSD-3-Clause
+// copyright-holders:S. Smith,David Haywood
+#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 Protection (King of Gladiator)", 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[0], 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 );
+}