diff options
Diffstat (limited to 'src/mame/old/kof2002_prot.cpp')
-rw-r--r-- | src/mame/old/kof2002_prot.cpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/mame/old/kof2002_prot.cpp b/src/mame/old/kof2002_prot.cpp new file mode 100644 index 00000000000..44d113c9a77 --- /dev/null +++ b/src/mame/old/kof2002_prot.cpp @@ -0,0 +1,83 @@ +// license:BSD-3-Clause +// copyright-holders:S. Smith,David Haywood + +#include "emu.h" +#include "kof2002_prot.h" + + + +const device_type KOF2002_PROT = device_creator<kof2002_prot_device>; + + +kof2002_prot_device::kof2002_prot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, KOF2002_PROT, "NeoGeo Protection (KOF2002)", tag, owner, clock, "kof2002_prot", __FILE__) +{ +} + + +void kof2002_prot_device::device_start() +{ +} + +void kof2002_prot_device::device_reset() +{ +} + + +/* kof2002, matrim, samsho5, samsh5sp have some simple block swapping */ +void kof2002_prot_device::kof2002_decrypt_68k(uint8_t* cpurom, uint32_t cpurom_size) +{ + int i; + static const int sec[]={0x100000,0x280000,0x300000,0x180000,0x000000,0x380000,0x200000,0x080000}; + uint8_t *src = cpurom+0x100000; + std::vector<uint8_t> dst(0x400000); + memcpy( &dst[0], src, 0x400000 ); + for( i=0; i<8; ++i ) + { + memcpy( src+i*0x80000, &dst[sec[i]], 0x80000 ); + } +} + + +void kof2002_prot_device::matrim_decrypt_68k(uint8_t* cpurom, uint32_t cpurom_size) +{ + int i; + static const int sec[]={0x100000,0x280000,0x300000,0x180000,0x000000,0x380000,0x200000,0x080000}; + uint8_t *src = cpurom+0x100000; + std::vector<uint8_t> dst(0x400000); + memcpy( &dst[0], src, 0x400000); + for( i=0; i<8; ++i ) + { + memcpy( src+i*0x80000, &dst[sec[i]], 0x80000 ); + } +} + + +void kof2002_prot_device::samsho5_decrypt_68k(uint8_t* cpurom, uint32_t cpurom_size) +{ + int i; + static const int sec[]={0x000000,0x080000,0x700000,0x680000,0x500000,0x180000,0x200000,0x480000,0x300000,0x780000,0x600000,0x280000,0x100000,0x580000,0x400000,0x380000}; + uint8_t *src = cpurom; + std::vector<uint8_t> dst(0x800000); + + memcpy( &dst[0], src, 0x800000 ); + for( i=0; i<16; ++i ) + { + memcpy( src+i*0x80000, &dst[sec[i]], 0x80000 ); + } +} + + +void kof2002_prot_device::samsh5sp_decrypt_68k(uint8_t* cpurom, uint32_t cpurom_size) +{ + int i; + static const int sec[]={0x000000,0x080000,0x500000,0x480000,0x600000,0x580000,0x700000,0x280000,0x100000,0x680000,0x400000,0x780000,0x200000,0x380000,0x300000,0x180000}; + uint8_t *src = cpurom; + std::vector<uint8_t> dst(0x800000); + + memcpy( &dst[0], src, 0x800000 ); + for( i=0; i<16; ++i ) + { + memcpy( src+i*0x80000, &dst[sec[i]], 0x80000 ); + } +} |