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https://github.com/holub/mame
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Improved Killing Blade encrypted DMA mode 3 [XingXing, David Haywood]
This commit is contained in:
Angelo Salese
parent
71635fd94d
commit
a39b4f2265
@ -4168,7 +4168,8 @@ static WRITE16_HANDLER( killbld_prot_w )
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UINT16 size = state->sharedprotram[0x294 / 2];
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UINT16 size = state->sharedprotram[0x294 / 2];
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UINT16 mode = state->sharedprotram[0x296 / 2];
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UINT16 mode = state->sharedprotram[0x296 / 2];
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UINT16 param;
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// int a=1;
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// int a=1;
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// if(src==0x580)
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// if(src==0x580)
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// int a=1;
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// int a=1;
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@ -4187,10 +4188,11 @@ static WRITE16_HANDLER( killbld_prot_w )
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//mame_printf_debug("src %04x dst %04x size %04x mode %04x\n", src, dst, size, mode);
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//mame_printf_debug("src %04x dst %04x size %04x mode %04x\n", src, dst, size, mode);
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//if (src&1) mame_printf_debug("odd offset\n");
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//if (src&1) mame_printf_debug("odd offset\n");
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param = mode >> 8;
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mode &=0xf; // what are the other bits?
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mode &=0xf; // what are the other bits?
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if (mode == 1 || mode == 2 || mode == 3)
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if (mode == 1 || mode == 2)
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{
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{
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/* for now, cheat -- the scramble isn't understood, it might
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/* for now, cheat -- the scramble isn't understood, it might
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be state based */
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be state based */
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@ -4203,6 +4205,155 @@ static WRITE16_HANDLER( killbld_prot_w )
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dat = RAMDUMP[dst + x];
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dat = RAMDUMP[dst + x];
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state->sharedprotram[dst + x] = dat;
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state->sharedprotram[dst + x] = dat;
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}
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}
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}
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else if (mode == 3)
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{
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int x;
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UINT16 *RAMDUMP = (UINT16*)memory_region(space->machine, "user2");
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UINT16 *PROTROM = (UINT16*)memory_region(space->machine, "user1");
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unsigned char rawDataEven[256] = {
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0xA8, 0x6A, 0x5D, 0xB6, 0x5D, 0xB1, 0xC1, 0x2C,
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0x39, 0x4F, 0xB7, 0xCF, 0x85, 0x3A, 0xEE, 0x65,
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0x7B, 0xD9, 0x81, 0xDB, 0x6D, 0x5F, 0x07, 0x03,
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0xB5, 0xEB, 0x59, 0x0F, 0x60, 0x61, 0x21, 0xCD,
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0x99, 0x06, 0x27, 0xA0, 0xD7, 0xDD, 0x5B, 0x42,
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0xC6, 0xC5, 0xA2, 0x3B, 0xF6, 0x4F, 0x61, 0x20,
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0x46, 0x61, 0xCA, 0x8C, 0x0E, 0x8C, 0xE9, 0xE0,
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0x0F, 0x2C, 0x6D, 0xBA, 0x1C, 0x45, 0x37, 0x36,
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0x85, 0x18, 0xA4, 0xE7, 0x46, 0x89, 0x9B, 0x94,
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0xF4, 0x30, 0x55, 0xB2, 0x63, 0x41, 0xEF, 0xA5,
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0x18, 0x1C, 0xB1, 0xB7, 0x72, 0xB3, 0x1C, 0xD4,
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0x97, 0xA0, 0xB6, 0x0B, 0x1F, 0x02, 0x94, 0xC5,
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0x83, 0x1B, 0xAC, 0xC3, 0x44, 0xAA, 0xD7, 0xD9,
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0xDB, 0x09, 0xA9, 0x6C, 0x64, 0x07, 0xF1, 0xAD,
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0x09, 0x83, 0x0E, 0x92, 0x2F, 0xCD, 0xF8, 0x99,
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0x63, 0xBC, 0x0A, 0x3C, 0x03, 0x8F, 0x91, 0x33,
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0xAC, 0x84, 0x15, 0x6C, 0x67, 0x3A, 0x69, 0xCB,
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0x92, 0xC7, 0x74, 0xA1, 0x90, 0x99, 0xBE, 0xEE,
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0x30, 0x0D, 0xBA, 0x57, 0xDE, 0xD1, 0xD6, 0xE5,
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0x8C, 0xFA, 0x43, 0x83, 0x5E, 0xE4, 0x84, 0x36,
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0x18, 0xCD, 0xB9, 0x1A, 0x48, 0x31, 0xA8, 0x20,
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0x32, 0xE3, 0x90, 0x89, 0x80, 0xF0, 0xAE, 0x21,
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0xA6, 0x33, 0x8C, 0x3C, 0x17, 0xB8, 0x0C, 0x72,
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0x29, 0xD1, 0x38, 0x1A, 0xC9, 0xFA, 0xC7, 0x87,
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0xDE, 0x6E, 0x6E, 0x05, 0x7E, 0x85, 0xED, 0x92,
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0xD3, 0xD4, 0xD4, 0x5C, 0xCB, 0x03, 0x19, 0xFE,
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0x83, 0x6C, 0x5B, 0x7A, 0x71, 0x79, 0xF4, 0xF6,
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0x53, 0xBA, 0xC1, 0x37, 0xDB, 0xC9, 0xB1, 0xDE,
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0x17, 0xDE, 0x0E, 0x64, 0xA2, 0x31, 0x8E, 0xD7,
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0x8D, 0x13, 0x19, 0x52, 0x0B, 0xCB, 0x58, 0x3D,
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0xDE, 0x31, 0x01, 0x4A, 0x85, 0x0C, 0xE5, 0x2B,
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0x22, 0x2D, 0xB6, 0x13, 0x2D, 0x48, 0x9A, 0xF3
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};
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/*
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unsigned char rawDataOdd[256] = {
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0xB6, 0xA8, 0xB1, 0x5D, 0x2C, 0x5D, 0x4F, 0xC1,
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0xCF, 0x39, 0x3A, 0xB7, 0x65, 0x85, 0xD9, 0xEE,
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0xDB, 0x7B, 0x5F, 0x81, 0x03, 0x6D, 0xEB, 0x07,
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0x0F, 0xB5, 0x61, 0x59, 0xCD, 0x60, 0x06, 0x21,
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0xA0, 0x99, 0xDD, 0x27, 0x42, 0xD7, 0xC5, 0x5B,
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0x3B, 0xC6, 0x4F, 0xA2, 0x20, 0xF6, 0x61, 0x61,
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0x8C, 0x46, 0x8C, 0xCA, 0xE0, 0x0E, 0x2C, 0xE9,
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0xBA, 0x0F, 0x45, 0x6D, 0x36, 0x1C, 0x18, 0x37,
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0xE7, 0x85, 0x89, 0xA4, 0x94, 0x46, 0x30, 0x9B,
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0xB2, 0xF4, 0x41, 0x55, 0xA5, 0x63, 0x1C, 0xEF,
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0xB7, 0x18, 0xB3, 0xB1, 0xD4, 0x72, 0xA0, 0x1C,
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0x0B, 0x97, 0x02, 0xB6, 0xC5, 0x1F, 0x1B, 0x94,
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0xC3, 0x83, 0xAA, 0xAC, 0xD9, 0x44, 0x09, 0xD7,
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0x6C, 0xDB, 0x07, 0xA9, 0xAD, 0x64, 0x83, 0xF1,
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0x92, 0x09, 0xCD, 0x0E, 0x99, 0x2F, 0xBC, 0xF8,
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0x3C, 0x63, 0x8F, 0x0A, 0x33, 0x03, 0x84, 0x91,
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0x6C, 0xAC, 0x3A, 0x15, 0xCB, 0x67, 0xC7, 0x69,
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0xA1, 0x92, 0x99, 0x74, 0xEE, 0x90, 0x0D, 0xBE,
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0x57, 0x30, 0xD1, 0xBA, 0xE5, 0xDE, 0xFA, 0xD6,
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0x83, 0x8C, 0xE4, 0x43, 0x36, 0x5E, 0xCD, 0x84,
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0x1A, 0x18, 0x31, 0xB9, 0x20, 0x48, 0xE3, 0xA8,
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0x89, 0x32, 0xF0, 0x90, 0x21, 0x80, 0x33, 0xAE,
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0x3C, 0xA6, 0xB8, 0x8C, 0x72, 0x17, 0xD1, 0x0C,
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0x1A, 0x29, 0xFA, 0x38, 0x87, 0xC9, 0x6E, 0xC7,
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0x05, 0xDE, 0x85, 0x6E, 0x92, 0x7E, 0xD4, 0xED,
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0x5C, 0xD3, 0x03, 0xD4, 0xFE, 0xCB, 0x6C, 0x19,
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0x7A, 0x83, 0x79, 0x5B, 0xF6, 0x71, 0xBA, 0xF4,
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0x37, 0x53, 0xC9, 0xC1, 0xDE, 0xDB, 0xDE, 0xB1,
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0x64, 0x17, 0x31, 0x0E, 0xD7, 0xA2, 0x13, 0x8E,
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0x52, 0x8D, 0xCB, 0x19, 0x3D, 0x0B, 0x31, 0x58,
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0x4A, 0xDE, 0x0C, 0x01, 0x2B, 0x85, 0x2D, 0xE5,
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0x13, 0x22, 0x48, 0xB6, 0xF3, 0x2D, 0x00, 0x9A
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};
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*/
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for (x = 0; x < size; x++)
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{
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UINT16 dat;
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UINT16 dat2 = PROTROM[src + x];
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UINT8 extraoffset = param&0xfe; // the lowest bit changed the table addressing in tests, see 'rawDataOdd' table instead.. it's still related to the main one, not identical
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UINT16 extraxor = ((rawDataEven[((x*2)+0+extraoffset)&0xff]) << 8) | (rawDataEven[((x*2)+1+extraoffset)&0xff] << 0);
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dat2 = ((dat2 & 0x00ff)<<8) | ((dat2 & 0xff00)>>8);
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dat2 ^= extraxor;
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dat = RAMDUMP[dst + x];
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if (dat2 != dat)
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{
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printf("Mode 3 Param %04x | %04x %04x %04x Mismatch! %04x %04x %04x\n", param, src*2+x*2, dst*2+x*2, x*2, dat2, dat, extraxor);
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/* is this stuff wrong in the ram dump due to it being overwritten, or is there some other behavior of this mode, that's incorrect
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Mode 3 Param 0054 | 2120 2600 0000 Mismatch! 48e7 b461 72b3
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Mode 3 Param 0054 | 2122 2602 0002 Mismatch! 3000 ba77 1cd4
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Mode 3 Param 0054 | 2124 2604 0004 Mismatch! 4eb9 6cd6 97a0
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Mode 3 Param 0054 | 2126 2606 0006 Mismatch! 0015 c691 b60b
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Mode 3 Param 0054 | 2128 2608 0008 Mismatch! 92e0 4338 1f02
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Mode 3 Param 0054 | 212a 260a 000a Mismatch! 23f9 4095 94c5
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Mode 3 Param 0054 | 212c 260c 000c Mismatch! 0081 aae9 831b
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Mode 3 Param 0054 | 212e 260e 000e Mismatch! 3664 6adc acc3
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Mode 3 Param 0054 | 2130 2610 0010 Mismatch! 0080 1079 44aa
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Mode 3 Param 0054 | 2132 2612 0012 Mismatch! cbb0 c59c d7d9
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Mode 3 Param 0054 | 2134 2614 0014 Mismatch! 23f9 b8be db09
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Mode 3 Param 0054 | 2136 2616 0016 Mismatch! 0081 e1ba a96c
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Mode 3 Param 0054 | 2138 2618 0018 Mismatch! 3654 9fdf 6407
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Mode 3 Param 0054 | 213a 261a 001a Mismatch! 0081 28ea f1ad
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Mode 3 Param 0054 | 213c 261c 001c Mismatch! 2294 330a 0983
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Mode 3 Param 0054 | 213e 261e 001e Mismatch! 23f9 f506 0e92
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Mode 3 Param 0054 | 2140 2620 0020 Mismatch! 0080 9ffd 2fcd
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Mode 3 Param 0054 | 2142 2622 0022 Mismatch! cbb0 ac6b f899
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Mode 3 Param 0054 | 2144 2624 0024 Mismatch! 0080 02bd 63bc
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Mode 3 Param 0054 | 2146 2626 0026 Mismatch! cbc4 e6b9 0a3c
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Mode 3 Param 0054 | 2148 2628 0028 Mismatch! 23f9 1873 038f
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Mode 3 Param 0054 | 214a 262a 002a Mismatch! 0081 1b6a 9133
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Mode 3 Param 0054 | 214c 262c 002c Mismatch! 2294 89c2 ac84
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Mode 3 Param 0054 | 214e 262e 002e Mismatch! 0081 6643 156c
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Mode 3 Param 0054 | 2150 2630 0030 Mismatch! 3890 f4bb 673a
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Mode 3 Param 0054 | 2152 2632 0032 Mismatch! 4eb9 b49a 69cb
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Mode 3 Param 0054 | 2154 2634 0034 Mismatch! 0015 db70 92c7
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Mode 3 Param 0054 | 2156 2636 0036 Mismatch! 92d6 a655 74a1
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Mode 3 Param 0054 | 2158 2638 0038 Mismatch! 4eb9 262f 9099
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Mode 3 Param 0054 | 215a 263a 003a Mismatch! 0010 3704 beee
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Mode 3 Param 0054 | 215c 263c 003c Mismatch! ad5c 6002 300d
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Mode 3 Param 0054 | 215e 263e 003e Mismatch! 2079 6d8e ba57
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*/
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}
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else
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{
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// printf("Mode 3 Param %04x | %04x %04x %04x Good! %04x %04x %04x\n", param, src*2+x*2, dst*2+x*2, x*2, dat2, dat, extraxor);
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}
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//state->sharedprotram[dst + x] = dat;
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state->sharedprotram[dst + x] = dat2;
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}
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}
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}
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else if (mode == 5)
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else if (mode == 5)
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{
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{
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