diff options
Diffstat (limited to 'src/mame/old/sma_prot.cpp')
-rw-r--r-- | src/mame/old/sma_prot.cpp | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/src/mame/old/sma_prot.cpp b/src/mame/old/sma_prot.cpp new file mode 100644 index 00000000000..5c7b1b87100 --- /dev/null +++ b/src/mame/old/sma_prot.cpp @@ -0,0 +1,464 @@ +// license:BSD-3-Clause +// copyright-holders:S. Smith,David Haywood +#include "emu.h" +#include "sma_prot.h" + + + +const device_type SMA_PROT = device_creator<sma_prot_device>; + + +sma_prot_device::sma_prot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, SMA_PROT, "NeoGeo SMA Cartridge", tag, owner, clock, "sma_prot", __FILE__), + m_bankdev(nullptr), + m_sma_rng(0) +{ +} + + +void sma_prot_device::device_start() +{ + save_item(NAME(m_sma_rng)); +} + +void sma_prot_device::device_reset() +{ + reset_sma_rng(); +} + + + + + +/************************ SMA Protection************************ + thanks to Razoola +***************************************************************/ + +WRITE16_MEMBER( sma_prot_device::kof99_bankswitch_w ) +{ + int bankaddress; + static const int bankoffset[64] = + { + 0x000000, 0x100000, 0x200000, 0x300000, + 0x3cc000, 0x4cc000, 0x3f2000, 0x4f2000, + 0x407800, 0x507800, 0x40d000, 0x50d000, + 0x417800, 0x517800, 0x420800, 0x520800, + 0x424800, 0x524800, 0x429000, 0x529000, + 0x42e800, 0x52e800, 0x431800, 0x531800, + 0x54d000, 0x551000, 0x567000, 0x592800, + 0x588800, 0x581800, 0x599800, 0x594800, + 0x598000, /* rest not used? */ + }; + + /* unscramble bank number */ + data = + (((data>>14)&1)<<0)+ + (((data>> 6)&1)<<1)+ + (((data>> 8)&1)<<2)+ + (((data>>10)&1)<<3)+ + (((data>>12)&1)<<4)+ + (((data>> 5)&1)<<5); + + bankaddress = 0x100000 + bankoffset[data]; + m_bankdev->neogeo_set_main_cpu_bank_address(bankaddress); +} + + +WRITE16_MEMBER( sma_prot_device::garou_bankswitch_w ) +{ + /* thanks to Razoola and Mr K for the info */ + int bankaddress; + static const int bankoffset[64] = + { + 0x000000, 0x100000, 0x200000, 0x300000, // 00 + 0x280000, 0x380000, 0x2d0000, 0x3d0000, // 04 + 0x2f0000, 0x3f0000, 0x400000, 0x500000, // 08 + 0x420000, 0x520000, 0x440000, 0x540000, // 12 + 0x498000, 0x598000, 0x4a0000, 0x5a0000, // 16 + 0x4a8000, 0x5a8000, 0x4b0000, 0x5b0000, // 20 + 0x4b8000, 0x5b8000, 0x4c0000, 0x5c0000, // 24 + 0x4c8000, 0x5c8000, 0x4d0000, 0x5d0000, // 28 + 0x458000, 0x558000, 0x460000, 0x560000, // 32 + 0x468000, 0x568000, 0x470000, 0x570000, // 36 + 0x478000, 0x578000, 0x480000, 0x580000, // 40 + 0x488000, 0x588000, 0x490000, 0x590000, // 44 + 0x5d0000, 0x5d8000, 0x5e0000, 0x5e8000, // 48 + 0x5f0000, 0x5f8000, 0x600000, /* rest not used? */ + }; + + /* unscramble bank number */ + data = + (((data>> 5)&1)<<0)+ + (((data>> 9)&1)<<1)+ + (((data>> 7)&1)<<2)+ + (((data>> 6)&1)<<3)+ + (((data>>14)&1)<<4)+ + (((data>>12)&1)<<5); + + bankaddress = 0x100000 + bankoffset[data]; + m_bankdev->neogeo_set_main_cpu_bank_address(bankaddress); +} + + +WRITE16_MEMBER( sma_prot_device::garouh_bankswitch_w ) +{ + /* thanks to Razoola and Mr K for the info */ + int bankaddress; + static const int bankoffset[64] = + { + 0x000000, 0x100000, 0x200000, 0x300000, // 00 + 0x280000, 0x380000, 0x2d0000, 0x3d0000, // 04 + 0x2c8000, 0x3c8000, 0x400000, 0x500000, // 08 + 0x420000, 0x520000, 0x440000, 0x540000, // 12 + 0x598000, 0x698000, 0x5a0000, 0x6a0000, // 16 + 0x5a8000, 0x6a8000, 0x5b0000, 0x6b0000, // 20 + 0x5b8000, 0x6b8000, 0x5c0000, 0x6c0000, // 24 + 0x5c8000, 0x6c8000, 0x5d0000, 0x6d0000, // 28 + 0x458000, 0x558000, 0x460000, 0x560000, // 32 + 0x468000, 0x568000, 0x470000, 0x570000, // 36 + 0x478000, 0x578000, 0x480000, 0x580000, // 40 + 0x488000, 0x588000, 0x490000, 0x590000, // 44 + 0x5d8000, 0x6d8000, 0x5e0000, 0x6e0000, // 48 + 0x5e8000, 0x6e8000, 0x6e8000, 0x000000, // 52 + 0x000000, 0x000000, 0x000000, 0x000000, // 56 + 0x000000, 0x000000, 0x000000, 0x000000, // 60 + }; + + /* unscramble bank number */ + data = + (((data>> 4)&1)<<0)+ + (((data>> 8)&1)<<1)+ + (((data>>14)&1)<<2)+ + (((data>> 2)&1)<<3)+ + (((data>>11)&1)<<4)+ + (((data>>13)&1)<<5); + + bankaddress = 0x100000 + bankoffset[data]; + m_bankdev->neogeo_set_main_cpu_bank_address(bankaddress); +} + + +WRITE16_MEMBER( sma_prot_device::mslug3_bankswitch_w ) +{ + /* thanks to Razoola and Mr K for the info */ + int bankaddress; + static const int bankoffset[64] = + { + 0x000000, 0x020000, 0x040000, 0x060000, // 00 + 0x070000, 0x090000, 0x0b0000, 0x0d0000, // 04 + 0x0e0000, 0x0f0000, 0x120000, 0x130000, // 08 + 0x140000, 0x150000, 0x180000, 0x190000, // 12 + 0x1a0000, 0x1b0000, 0x1e0000, 0x1f0000, // 16 + 0x200000, 0x210000, 0x240000, 0x250000, // 20 + 0x260000, 0x270000, 0x2a0000, 0x2b0000, // 24 + 0x2c0000, 0x2d0000, 0x300000, 0x310000, // 28 + 0x320000, 0x330000, 0x360000, 0x370000, // 32 + 0x380000, 0x390000, 0x3c0000, 0x3d0000, // 36 + 0x400000, 0x410000, 0x440000, 0x450000, // 40 + 0x460000, 0x470000, 0x4a0000, 0x4b0000, // 44 + 0x4c0000, /* rest not used? */ + }; + + /* unscramble bank number */ + data = + (((data>>14)&1)<<0)+ + (((data>>12)&1)<<1)+ + (((data>>15)&1)<<2)+ + (((data>> 6)&1)<<3)+ + (((data>> 3)&1)<<4)+ + (((data>> 9)&1)<<5); + + bankaddress = 0x100000 + bankoffset[data]; + m_bankdev->neogeo_set_main_cpu_bank_address(bankaddress); +} + + +WRITE16_MEMBER( sma_prot_device::kof2000_bankswitch_w ) +{ + /* thanks to Razoola and Mr K for the info */ + int bankaddress; + static const int bankoffset[64] = + { + 0x000000, 0x100000, 0x200000, 0x300000, // 00 + 0x3f7800, 0x4f7800, 0x3ff800, 0x4ff800, // 04 + 0x407800, 0x507800, 0x40f800, 0x50f800, // 08 + 0x416800, 0x516800, 0x41d800, 0x51d800, // 12 + 0x424000, 0x524000, 0x523800, 0x623800, // 16 + 0x526000, 0x626000, 0x528000, 0x628000, // 20 + 0x52a000, 0x62a000, 0x52b800, 0x62b800, // 24 + 0x52d000, 0x62d000, 0x52e800, 0x62e800, // 28 + 0x618000, 0x619000, 0x61a000, 0x61a800, // 32 + }; + + /* unscramble bank number */ + data = + (((data>>15)&1)<<0)+ + (((data>>14)&1)<<1)+ + (((data>> 7)&1)<<2)+ + (((data>> 3)&1)<<3)+ + (((data>>10)&1)<<4)+ + (((data>> 5)&1)<<5); + + bankaddress = 0x100000 + bankoffset[data]; + m_bankdev->neogeo_set_main_cpu_bank_address(bankaddress); +} + + +READ16_MEMBER( sma_prot_device::prot_9a37_r ) +{ + return 0x9a37; +} + + +/* information about the sma random number generator provided by razoola */ +/* this RNG is correct for KOF99, other games might be different */ + +READ16_MEMBER( sma_prot_device::sma_random_r ) +{ + uint16_t old = m_sma_rng; + + uint16_t newbit = ((m_sma_rng >> 2) ^ + (m_sma_rng >> 3) ^ + (m_sma_rng >> 5) ^ + (m_sma_rng >> 6) ^ + (m_sma_rng >> 7) ^ + (m_sma_rng >>11) ^ + (m_sma_rng >>12) ^ + (m_sma_rng >>15)) & 1; + + m_sma_rng = (m_sma_rng << 1) | newbit; + + return old; +} + + +void sma_prot_device::reset_sma_rng() +{ + m_sma_rng = 0x2345; +} + + +void sma_prot_device::sma_install_random_read_handler(cpu_device* maincpu, int addr1, int addr2 ) +{ + maincpu->space(AS_PROGRAM).install_read_handler(addr1, addr1 + 1, read16_delegate(FUNC(sma_prot_device::sma_random_r),this)); + maincpu->space(AS_PROGRAM).install_read_handler(addr2, addr2 + 1, read16_delegate(FUNC(sma_prot_device::sma_random_r),this)); +} + + +void sma_prot_device::kof99_install_protection(cpu_device* maincpu, neogeo_banked_cart_device* bankdev) +{ + maincpu->space(AS_PROGRAM).install_write_handler(0x2ffff0, 0x2ffff1, write16_delegate(FUNC(sma_prot_device::kof99_bankswitch_w),this)); + maincpu->space(AS_PROGRAM).install_read_handler(0x2fe446, 0x2fe447, read16_delegate(FUNC(sma_prot_device::prot_9a37_r),this)); + m_bankdev = bankdev; + + sma_install_random_read_handler(maincpu, 0x2ffff8, 0x2ffffa); +} + + +void sma_prot_device::garou_install_protection(cpu_device* maincpu, neogeo_banked_cart_device* bankdev) +{ + maincpu->space(AS_PROGRAM).install_write_handler(0x2fffc0, 0x2fffc1, write16_delegate(FUNC(sma_prot_device::garou_bankswitch_w),this)); + maincpu->space(AS_PROGRAM).install_read_handler(0x2fe446, 0x2fe447, read16_delegate(FUNC(sma_prot_device::prot_9a37_r),this)); + m_bankdev = bankdev; + + sma_install_random_read_handler(maincpu, 0x2fffcc, 0x2ffff0); +} + + +void sma_prot_device::garouh_install_protection(cpu_device* maincpu, neogeo_banked_cart_device* bankdev) +{ + maincpu->space(AS_PROGRAM).install_write_handler(0x2fffc0, 0x2fffc1, write16_delegate(FUNC(sma_prot_device::garouh_bankswitch_w),this)); + maincpu->space(AS_PROGRAM).install_read_handler(0x2fe446, 0x2fe447, read16_delegate(FUNC(sma_prot_device::prot_9a37_r),this)); + m_bankdev = bankdev; + + sma_install_random_read_handler(maincpu, 0x2fffcc, 0x2ffff0); +} + + +void sma_prot_device::mslug3_install_protection(cpu_device* maincpu, neogeo_banked_cart_device* bankdev) +{ + maincpu->space(AS_PROGRAM).install_write_handler(0x2fffe4, 0x2fffe5, write16_delegate(FUNC(sma_prot_device::mslug3_bankswitch_w),this)); + maincpu->space(AS_PROGRAM).install_read_handler(0x2fe446, 0x2fe447, read16_delegate(FUNC(sma_prot_device::prot_9a37_r),this)); + m_bankdev = bankdev; + +// sma_install_random_read_handler(maincpu, 0x2ffff8, 0x2ffffa); +} + + +void sma_prot_device::kof2000_install_protection(cpu_device* maincpu, neogeo_banked_cart_device* bankdev) +{ + maincpu->space(AS_PROGRAM).install_write_handler(0x2fffec, 0x2fffed, write16_delegate(FUNC(sma_prot_device::kof2000_bankswitch_w),this)); + maincpu->space(AS_PROGRAM).install_read_handler(0x2fe446, 0x2fe447, read16_delegate(FUNC(sma_prot_device::prot_9a37_r),this)); + m_bankdev = bankdev; + + sma_install_random_read_handler(maincpu, 0x2fffd8, 0x2fffda); +} + + + +/* kof99, garou, garouh, mslug3 and kof2000 have and SMA chip which contains program code and decrypts the 68k roms */ +void sma_prot_device::kof99_decrypt_68k(uint8_t* base) +{ + uint16_t *rom; + int i,j; + + rom = (uint16_t *)(base + 0x100000); + /* swap data lines on the whole ROMs */ + for (i = 0;i < 0x800000/2;i++) + { + rom[i] = BITSWAP16(rom[i],13,7,3,0,9,4,5,6,1,12,8,14,10,11,2,15); + } + + /* swap address lines for the banked part */ + for (i = 0;i < 0x600000/2;i+=0x800/2) + { + uint16_t buffer[0x800/2]; + memcpy(buffer,&rom[i],0x800); + for (j = 0;j < 0x800/2;j++) + { + rom[i+j] = buffer[BITSWAP24(j,23,22,21,20,19,18,17,16,15,14,13,12,11,10,6,2,4,9,8,3,1,7,0,5)]; + } + } + + /* swap address lines & relocate fixed part */ + rom = (uint16_t *)base; + for (i = 0;i < 0x0c0000/2;i++) + { + rom[i] = rom[0x700000/2 + BITSWAP24(i,23,22,21,20,19,18,11,6,14,17,16,5,8,10,12,0,4,3,2,7,9,15,13,1)]; + } +} + + +void sma_prot_device::garou_decrypt_68k(uint8_t* base) +{ + uint16_t *rom; + int i,j; + + /* thanks to Razoola and Mr K for the info */ + rom = (uint16_t *)(base + 0x100000); + /* swap data lines on the whole ROMs */ + for (i = 0;i < 0x800000/2;i++) + { + rom[i] = BITSWAP16(rom[i],13,12,14,10,8,2,3,1,5,9,11,4,15,0,6,7); + } + + /* swap address lines & relocate fixed part */ + rom = (uint16_t *)base; + for (i = 0;i < 0x0c0000/2;i++) + { + rom[i] = rom[0x710000/2 + BITSWAP24(i,23,22,21,20,19,18,4,5,16,14,7,9,6,13,17,15,3,1,2,12,11,8,10,0)]; + } + + /* swap address lines for the banked part */ + rom = (uint16_t *)(base + 0x100000); + for (i = 0;i < 0x800000/2;i+=0x8000/2) + { + uint16_t buffer[0x8000/2]; + memcpy(buffer,&rom[i],0x8000); + for (j = 0;j < 0x8000/2;j++) + { + rom[i+j] = buffer[BITSWAP24(j,23,22,21,20,19,18,17,16,15,14,9,4,8,3,13,6,2,7,0,12,1,11,10,5)]; + } + } +} + + +void sma_prot_device::garouh_decrypt_68k(uint8_t* base) +{ + uint16_t *rom; + int i,j; + + /* thanks to Razoola and Mr K for the info */ + rom = (uint16_t *)(base + 0x100000); + /* swap data lines on the whole ROMs */ + for (i = 0;i < 0x800000/2;i++) + { + rom[i] = BITSWAP16(rom[i],14,5,1,11,7,4,10,15,3,12,8,13,0,2,9,6); + } + + /* swap address lines & relocate fixed part */ + rom = (uint16_t *)base; + for (i = 0;i < 0x0c0000/2;i++) + { + rom[i] = rom[0x7f8000/2 + BITSWAP24(i,23,22,21,20,19,18,5,16,11,2,6,7,17,3,12,8,14,4,0,9,1,10,15,13)]; + } + + /* swap address lines for the banked part */ + rom = (uint16_t *)(base + 0x100000); + for (i = 0;i < 0x800000/2;i+=0x8000/2) + { + uint16_t buffer[0x8000/2]; + memcpy(buffer,&rom[i],0x8000); + for (j = 0;j < 0x8000/2;j++) + { + rom[i+j] = buffer[BITSWAP24(j,23,22,21,20,19,18,17,16,15,14,12,8,1,7,11,3,13,10,6,9,5,4,0,2)]; + } + } +} + + +void sma_prot_device::mslug3_decrypt_68k(uint8_t* base) +{ + uint16_t *rom; + int i,j; + + /* thanks to Razoola and Mr K for the info */ + rom = (uint16_t *)(base + 0x100000); + /* swap data lines on the whole ROMs */ + for (i = 0;i < 0x800000/2;i++) + { + rom[i] = BITSWAP16(rom[i],4,11,14,3,1,13,0,7,2,8,12,15,10,9,5,6); + } + + /* swap address lines & relocate fixed part */ + rom = (uint16_t *)base; + for (i = 0;i < 0x0c0000/2;i++) + { + rom[i] = rom[0x5d0000/2 + BITSWAP24(i,23,22,21,20,19,18,15,2,1,13,3,0,9,6,16,4,11,5,7,12,17,14,10,8)]; + } + + /* swap address lines for the banked part */ + rom = (uint16_t *)(base + 0x100000); + for (i = 0;i < 0x800000/2;i+=0x10000/2) + { + uint16_t buffer[0x10000/2]; + memcpy(buffer,&rom[i],0x10000); + for (j = 0;j < 0x10000/2;j++) + { + rom[i+j] = buffer[BITSWAP24(j,23,22,21,20,19,18,17,16,15,2,11,0,14,6,4,13,8,9,3,10,7,5,12,1)]; + } + } +} + + +void sma_prot_device::kof2000_decrypt_68k(uint8_t* base) +{ + uint16_t *rom; + int i,j; + + /* thanks to Razoola and Mr K for the info */ + rom = (uint16_t *)(base + 0x100000); + /* swap data lines on the whole ROMs */ + for (i = 0;i < 0x800000/2;i++) + { + rom[i] = BITSWAP16(rom[i],12,8,11,3,15,14,7,0,10,13,6,5,9,2,1,4); + } + + /* swap address lines for the banked part */ + for (i = 0;i < 0x63a000/2;i+=0x800/2) + { + uint16_t buffer[0x800/2]; + memcpy(buffer,&rom[i],0x800); + for (j = 0;j < 0x800/2;j++) + { + rom[i+j] = buffer[BITSWAP24(j,23,22,21,20,19,18,17,16,15,14,13,12,11,10,4,1,3,8,6,2,7,0,9,5)]; + } + } + + /* swap address lines & relocate fixed part */ + rom = (uint16_t *)base; + for (i = 0;i < 0x0c0000/2;i++) + { + rom[i] = rom[0x73a000/2 + BITSWAP24(i,23,22,21,20,19,18,8,4,15,13,3,14,16,2,6,17,7,12,10,0,5,11,1,9)]; + } +} |