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https://github.com/holub/mame
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preliminary decryption of newly added igs_m027.c sets [iq_132]
This commit is contained in:
David Haywood
parent
a54aaa2f84
commit
de74ce25fe
@ -1572,98 +1572,92 @@ void fruitpar_decrypt(running_machine &machine)
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}
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}
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/*FIXME: This is incorrect. Was simply copied from fruitpar as an initial boilerplate code: */
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static const UINT8 amazonia_tab[0x100] = {
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0xe9, 0x0b, 0x95, 0x7e, 0x0d, 0x7d, 0x5c, 0x1e, 0x81, 0x0e, 0xa6, 0xd4, 0x8e, 0x90, 0xd8, 0x54,
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0x27, 0x65, 0x51, 0x08, 0x1c, 0xa0, 0x3b, 0x51, 0x83, 0x60, 0x93, 0x02, 0x64, 0x69, 0x77, 0x1a,
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0xa4, 0x03, 0xb0, 0xc2, 0x34, 0x18, 0x80, 0x87, 0x7a, 0x88, 0xad, 0xd9, 0xff, 0xd0, 0xce, 0xc4,
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0x5b, 0xdc, 0xd5, 0xed, 0x5e, 0x29, 0xdd, 0xcf, 0x80, 0x1f, 0x36, 0x38, 0x8b, 0xae, 0xae, 0xfe,
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0x87, 0x27, 0x22, 0x07, 0xe6, 0x5d, 0x46, 0x79, 0xf1, 0xfc, 0xb1, 0x3d, 0x72, 0x29, 0x2c, 0xba,
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0xa3, 0x5b, 0x3c, 0xcf, 0x57, 0x79, 0xed, 0x12, 0x67, 0x34, 0xe1, 0x48, 0x5f, 0xa7, 0x9a, 0x24,
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0x6a, 0x2e, 0x04, 0x44, 0x7b, 0x84, 0x46, 0x6a, 0xbd, 0x20, 0xca, 0xf7, 0x3e, 0xd1, 0x8b, 0xad,
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0xd7, 0x98, 0x9e, 0xa6, 0x5e, 0xc6, 0x04, 0x90, 0x0f, 0x57, 0xae, 0x2b, 0x38, 0x8d, 0xd2, 0x0c,
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0x25, 0xd1, 0x6d, 0x73, 0x4b, 0xc6, 0x19, 0xd3, 0xb8, 0xae, 0x11, 0x01, 0xba, 0x02, 0x82, 0x17,
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0xcf, 0x4d, 0x14, 0x6a, 0xcd, 0x4a, 0xb9, 0xc1, 0x52, 0x3e, 0xb5, 0xd8, 0x6f, 0x98, 0xee, 0x16,
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0x90, 0xc6, 0x76, 0x8a, 0xaf, 0x5a, 0x56, 0x2b, 0xb9, 0x5e, 0x9e, 0x51, 0x40, 0xf4, 0xaa, 0x6e,
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0x63, 0x32, 0xb6, 0x12, 0xfb, 0x3c, 0xa5, 0x1f, 0x07, 0xa3, 0x0d, 0x49, 0x5a, 0xfe, 0x88, 0xd1,
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0x83, 0xc7, 0x37, 0x82, 0xfd, 0x78, 0x97, 0xec, 0x98, 0xe6, 0x88, 0xe0, 0x27, 0xde, 0x9a, 0x2c,
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0x6b, 0xfd, 0x9b, 0x98, 0x40, 0xd5, 0x5f, 0x20, 0x06, 0x3e, 0xcf, 0x74, 0x52, 0xf9, 0x35, 0xae,
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0xd6, 0x8c, 0xc7, 0x53, 0x8e, 0x59, 0x71, 0x8c, 0x2d, 0x00, 0xe7, 0xa5, 0xc7, 0xf8, 0xeb, 0xc7,
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0xbf, 0x68, 0xdc, 0xf2, 0xf4, 0x4c, 0x80, 0x3e, 0x27, 0xc5, 0x13, 0x52, 0xb0, 0xc0, 0x90, 0x2d
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static UINT8 amazonia_tab[0x100] = { // seems to be correct
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0x87, 0x01, 0xd3, 0x6b, 0x79, 0x00, 0xbd, 0x81, 0xc7, 0x8f, 0x9b, 0xd9, 0x3b, 0x53, 0x09, 0x15,
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0x05, 0x57, 0x7b, 0x1f, 0x2f, 0x09, 0x47, 0xa1, 0x45, 0x00, 0xf7, 0xbf, 0x3d, 0x59, 0xd1, 0x19,
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0xad, 0xd5, 0xa1, 0x03, 0x2d, 0x35, 0xc7, 0x07, 0x09, 0x4f, 0x85, 0x95, 0x2b, 0x3f, 0x89, 0x09,
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0x49, 0x85, 0xb9, 0xe7, 0x4b, 0x53, 0x3f, 0x51, 0xff, 0x3b, 0xd5, 0xc9, 0xff, 0xfd, 0x53, 0x25,
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0xe3, 0xa9, 0x75, 0xd7, 0xa3, 0xfd, 0xf1, 0x5f, 0x51, 0xfb, 0xbb, 0x09, 0xf5, 0xc9, 0x91, 0xed,
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0xc7, 0xcd, 0xc9, 0x25, 0x93, 0x07, 0x63, 0x51, 0x69, 0xb3, 0x4b, 0x47, 0x85, 0x19, 0xe7, 0x1f,
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0x7f, 0xb3, 0xe9, 0x5f, 0xb5, 0x8b, 0x57, 0x83, 0xf5, 0xcb, 0xd5, 0xb1, 0x6d, 0xa3, 0x37, 0xbb,
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0xd7, 0x67, 0x45, 0x55, 0xe3, 0xdd, 0xcf, 0x97, 0xdd, 0xe9, 0xf1, 0xb5, 0xa7, 0x63, 0xa5, 0xfd,
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0xdb, 0x2b, 0x93, 0x13, 0x37, 0x95, 0x0d, 0x69, 0x4d, 0xf7, 0x6d, 0x03, 0x6f, 0x8b, 0x95, 0x69,
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0xd5, 0x8b, 0xc3, 0xeb, 0x0f, 0x8b, 0x97, 0x1b, 0xb1, 0x19, 0x5f, 0x89, 0x3d, 0x95, 0xa9, 0xb9,
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0x4f, 0x4b, 0x0b, 0x6b, 0x05, 0xd5, 0x2d, 0x0b, 0xb5, 0xb7, 0x19, 0x75, 0xcf, 0x35, 0xc3, 0xef,
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0x13, 0x71, 0xdb, 0x61, 0xf3, 0xcb, 0xd3, 0xd7, 0x3f, 0x79, 0x2d, 0x39, 0x21, 0x65, 0x07, 0x49,
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0x31, 0x47, 0xe9, 0xdd, 0xf3, 0x03, 0xcf, 0x5f, 0x7f, 0x45, 0x71, 0x83, 0x69, 0x5b, 0xd9, 0x47,
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0xef, 0x53, 0x27, 0x2f, 0x63, 0x55, 0x9f, 0xc1, 0xdf, 0x41, 0xf5, 0x41, 0x27, 0x8d, 0xdb, 0xa7,
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0xd9, 0x5b, 0xc7, 0xe5, 0xdd, 0xd7, 0x09, 0x5f, 0x09, 0xd7, 0x0d, 0xa1, 0x13, 0xb3, 0xef, 0x67,
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0xbb, 0x65, 0x3d, 0xcd, 0x3b, 0xdf, 0x0f, 0xd3, 0xe7, 0xab, 0x4d, 0x15, 0x29, 0xc5, 0x39, 0xc9
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};
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void amazonia_decrypt(running_machine &machine)
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{
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int i;
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UINT16 *src = (UINT16 *) machine.root_device().memregion("user1")->base();
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UINT16 *src = (UINT16 *)machine.root_device().memregion("user1")->base();
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int rom_size = 0x80000;
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for (i = 0; i < rom_size / 2; i++) {
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int x = amazonia_tab[(i / 2) & 0xff] << 8;
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// not 100% verified
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for(i=0; i<rom_size/2; i++)
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{
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UINT16 x = src[i];
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if ((i & 0x040480) != 0x000080) x ^= 0x0001;
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if ((i & 0x004008) == 0x004008) x ^= 0x0002;
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if ((i & 0x080030) == 0x080010) x ^= 0x0004; // pin high??
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if ((i & 0x000242) != 0x000042) x ^= 0x0008;
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if ((i & 0x008100) == 0x008000) x ^= 0x0010;
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if ((i & 0x022004) != 0x000004) x ^= 0x0020; // verified
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if ((i & 0x011800) != 0x010000) x ^= 0x0040;
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if ((i & 0x004820) == 0x004820) x ^= 0x0080; // verified
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IGS27_CRYPT1
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// IGS27_CRYPT2
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// IGS27_CRYPT3
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IGS27_CRYPT4_ALT
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IGS27_CRYPT5
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IGS27_CRYPT6_ALT
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IGS27_CRYPT7
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IGS27_CRYPT8
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x ^= amazonia_tab[(i>> 1) & 0xff] << 8;
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src[i] = x;
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src[i] ^= x;
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}
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}
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/*FIXME: This is incorrect. Was simply copied from fruitpar as an initial boilerplate code: */
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// not 100% verified
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static const UINT8 amazoni2_tab[0x100] = {
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0xe9, 0x0b, 0x95, 0x7e, 0x0d, 0x7d, 0x5c, 0x1e, 0x81, 0x0e, 0xa6, 0xd4, 0x8e, 0x90, 0xd8, 0x54,
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0x27, 0x65, 0x51, 0x08, 0x1c, 0xa0, 0x3b, 0x51, 0x83, 0x60, 0x93, 0x02, 0x64, 0x69, 0x77, 0x1a,
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0xa4, 0x03, 0xb0, 0xc2, 0x34, 0x18, 0x80, 0x87, 0x7a, 0x88, 0xad, 0xd9, 0xff, 0xd0, 0xce, 0xc4,
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0x5b, 0xdc, 0xd5, 0xed, 0x5e, 0x29, 0xdd, 0xcf, 0x80, 0x1f, 0x36, 0x38, 0x8b, 0xae, 0xae, 0xfe,
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0x87, 0x27, 0x22, 0x07, 0xe6, 0x5d, 0x46, 0x79, 0xf1, 0xfc, 0xb1, 0x3d, 0x72, 0x29, 0x2c, 0xba,
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0xa3, 0x5b, 0x3c, 0xcf, 0x57, 0x79, 0xed, 0x12, 0x67, 0x34, 0xe1, 0x48, 0x5f, 0xa7, 0x9a, 0x24,
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0x6a, 0x2e, 0x04, 0x44, 0x7b, 0x84, 0x46, 0x6a, 0xbd, 0x20, 0xca, 0xf7, 0x3e, 0xd1, 0x8b, 0xad,
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0xd7, 0x98, 0x9e, 0xa6, 0x5e, 0xc6, 0x04, 0x90, 0x0f, 0x57, 0xae, 0x2b, 0x38, 0x8d, 0xd2, 0x0c,
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0x25, 0xd1, 0x6d, 0x73, 0x4b, 0xc6, 0x19, 0xd3, 0xb8, 0xae, 0x11, 0x01, 0xba, 0x02, 0x82, 0x17,
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0xcf, 0x4d, 0x14, 0x6a, 0xcd, 0x4a, 0xb9, 0xc1, 0x52, 0x3e, 0xb5, 0xd8, 0x6f, 0x98, 0xee, 0x16,
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0x90, 0xc6, 0x76, 0x8a, 0xaf, 0x5a, 0x56, 0x2b, 0xb9, 0x5e, 0x9e, 0x51, 0x40, 0xf4, 0xaa, 0x6e,
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0x63, 0x32, 0xb6, 0x12, 0xfb, 0x3c, 0xa5, 0x1f, 0x07, 0xa3, 0x0d, 0x49, 0x5a, 0xfe, 0x88, 0xd1,
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0x83, 0xc7, 0x37, 0x82, 0xfd, 0x78, 0x97, 0xec, 0x98, 0xe6, 0x88, 0xe0, 0x27, 0xde, 0x9a, 0x2c,
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0x6b, 0xfd, 0x9b, 0x98, 0x40, 0xd5, 0x5f, 0x20, 0x06, 0x3e, 0xcf, 0x74, 0x52, 0xf9, 0x35, 0xae,
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0xd6, 0x8c, 0xc7, 0x53, 0x8e, 0x59, 0x71, 0x8c, 0x2d, 0x00, 0xe7, 0xa5, 0xc7, 0xf8, 0xeb, 0xc7,
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0xbf, 0x68, 0xdc, 0xf2, 0xf4, 0x4c, 0x80, 0x3e, 0x27, 0xc5, 0x13, 0x52, 0xb0, 0xc0, 0x90, 0x2d
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0x49, 0x47, 0x53, 0x30, 0x30, 0x37, 0x37, 0x52, 0x44, 0x34, 0x30, 0x32, 0x31, 0x30, 0x31, 0x36,
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0xed, 0x3f, 0x77, 0xd0, 0xc4, 0x72, 0x77, 0xe1, 0x35, 0x15, 0x10, 0xc6, 0x1b, 0xee, 0x25, 0x4a,
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0x0d, 0x06, 0x37, 0x19, 0xfa, 0xf9, 0x29, 0xb0, 0x03, 0x7e, 0x32, 0x83, 0x99, 0x32, 0x23, 0x6e,
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0xd8, 0xa9, 0xdb, 0x5f, 0x23, 0xb7, 0x08, 0x41, 0x00, 0xfb, 0x20, 0x2b, 0x36, 0xae, 0x9f, 0xc9,
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0x24, 0xaa, 0x82, 0x0b, 0x64, 0xbe, 0x03, 0x0d, 0xa2, 0x31, 0x97, 0x47, 0xb6, 0x94, 0x26, 0xf6,
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0x09, 0xcd, 0x8a, 0xca, 0x26, 0x61, 0x4a, 0xd1, 0x9f, 0x01, 0x98, 0xa3, 0x23, 0x58, 0x88, 0xcf,
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0xdd, 0x14, 0x93, 0x86, 0x0f, 0x33, 0x4c, 0x86, 0xef, 0x8f, 0x61, 0x4a, 0xc2, 0xad, 0xd5, 0x70,
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0x37, 0xc2, 0x7b, 0x6a, 0x06, 0x07, 0xb7, 0x69, 0xc9, 0x3f, 0x71, 0x87, 0x1a, 0x85, 0x5a, 0x33,
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0xee, 0x5b, 0x63, 0xe2, 0x32, 0xf0, 0x7a, 0xf4, 0xa4, 0xb2, 0x87, 0xe4, 0xf3, 0x14, 0xa7, 0xb4,
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0x1a, 0xa1, 0xa8, 0x98, 0xf9, 0x42, 0xc5, 0xe1, 0x36, 0xcc, 0xa3, 0x2d, 0x54, 0xcd, 0x8b, 0xcd,
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0x11, 0x98, 0xe9, 0x77, 0x05, 0x8e, 0x06, 0x2d, 0x78, 0xb0, 0x02, 0x6d, 0x83, 0x62, 0x15, 0x9a,
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0x6b, 0x82, 0x07, 0xaa, 0x3a, 0xa9, 0xed, 0x12, 0x9f, 0xc0, 0x25, 0xee, 0x08, 0xc7, 0x94, 0x75,
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0xfd, 0xe2, 0x1f, 0x9d, 0xc0, 0xa5, 0x68, 0x0a, 0x23, 0xa1, 0xca, 0x3d, 0xa9, 0x2f, 0x97, 0xfa,
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0xe0, 0x7c, 0x91, 0xfa, 0xfe, 0xd5, 0xa6, 0xd2, 0xbb, 0x34, 0xf1, 0x23, 0x6e, 0x0c, 0xed, 0x03,
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0x6b, 0x52, 0xfb, 0xac, 0x9c, 0xcc, 0x17, 0x64, 0x5d, 0x9e, 0xd7, 0xac, 0x9e, 0x12, 0xa5, 0xac,
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0x34, 0xa7, 0x3e, 0xde, 0x7f, 0x5d, 0x6a, 0xfa, 0x42, 0x40, 0xfd, 0x23, 0xbf, 0x33, 0x0e, 0x50
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};
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void amazoni2_decrypt(running_machine &machine)
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{
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int i;
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UINT16 *src = (UINT16 *) machine.root_device().memregion("user1")->base();
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int i;
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UINT16 *src = (UINT16 *) machine.root_device().memregion("user1")->base();
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int rom_size = 0x80000;
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int rom_size = 0x80000;
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// not 100% verified
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for(i=0; i<rom_size/2; i++)
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{
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UINT16 x = src[i];
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for(i=0; i<rom_size/2; i++)
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{
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UINT16 x = src[i];
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IGS27_CRYPT1
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// IGS27_CRYPT2
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// IGS27_CRYPT3
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IGS27_CRYPT4_ALT
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IGS27_CRYPT5
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IGS27_CRYPT6_ALT
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IGS27_CRYPT7
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IGS27_CRYPT8
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// should be correct
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IGS27_CRYPT1
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IGS27_CRYPT2_ALT
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// IGS27_CRYPT3
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IGS27_CRYPT4
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IGS27_CRYPT5
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IGS27_CRYPT6_ALT // second half is junk, not sure...
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IGS27_CRYPT7
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IGS27_CRYPT8
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x ^= amazoni2_tab[(i>> 1) & 0xff] << 8;
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x ^= amazoni2_tab[(i >> 1) & 0xff] << 8;
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src[i] = x;
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}
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src[i] = x;
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}
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}
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