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pgm.c: Added preliminary decryption to svgpcb. [iq132]

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This commit is contained in:
Michaël Banaan Ananas 2012-03-21 20:59:50 +00:00
parent 8400e33f10
commit ce2c323a95
3 changed files with 55 additions and 1 deletions
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9
src/mame/drivers/pgm.c
View File

@ -4711,6 +4711,13 @@ static DRIVER_INIT( svg )
kov2_latch_init(machine);
}
static DRIVER_INIT( svgpcb )
{
svg_basic_init(machine);
pgm_svgpcb_decrypt(machine);
kov2_latch_init(machine);
}
static DRIVER_INIT( killbldp )
{
svg_basic_init(machine);
@ -6052,7 +6059,7 @@ GAME( 2005, killbldp, pgm, svg, sango, killbldp, ROT0, "IGS
GAME( 2004, happy6, pgm, svg, sango, svg, ROT0, "IGS", "Happy 6-in-1 (ver. 101CN)", GAME_IMPERFECT_SOUND | GAME_UNEMULATED_PROTECTION | GAME_NOT_WORKING | GAME_SUPPORTS_SAVE ) /* need internal rom of IGS027A */
GAME( 2005, svg, pgm, svg, sango, svg, ROT0, "IGS / Idea Factory", "S.V.G. - Spectral vs Generation (M68k label V200) (ARM label V200, ROM 10/11/05 S.V.G V201)", GAME_IMPERFECT_SOUND | GAME_UNEMULATED_PROTECTION | GAME_NOT_WORKING | GAME_SUPPORTS_SAVE ) /* need internal rom of IGS027A */ // label was 200, but it's code rev 201? // ARM time: 10:07:20
GAME( 2005, svgpcb, svg, svg, sango, svg, ROT0, "IGS / Idea Factory", "S.V.G. - Spectral vs Generation (M68k label V100JP) (ARM label V100JP) (JAMMA PCB)", GAME_IMPERFECT_SOUND | GAME_UNEMULATED_PROTECTION | GAME_NOT_WORKING | GAME_SUPPORTS_SAVE ) /* need internal rom of IGS027A */ // different encryption?
GAME( 2005, svgpcb, svg, svg, sango, svgpcb, ROT0, "IGS / Idea Factory", "S.V.G. - Spectral vs Generation (M68k label V100JP) (ARM label V100JP ROM 05/12/05 S.V.G V100) (JAMMA PCB)", GAME_IMPERFECT_SOUND | GAME_UNEMULATED_PROTECTION | GAME_NOT_WORKING | GAME_SUPPORTS_SAVE ) /* need internal rom of IGS027A */ // ARM time: 15:31:35
/* these don't use an External ARM rom, and don't have any weak internal functions which would allow the internal ROM to be read out */

1
src/mame/includes/pgm.h
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@ -133,6 +133,7 @@ void pgm_oldsplus_decrypt(running_machine &machine);
void pgm_kovshp_decrypt(running_machine &machine);
void pgm_killbldp_decrypt(running_machine &machine);
void pgm_svg_decrypt(running_machine &machine);
void pgm_svgpcb_decrypt(running_machine &machine);
void pgm_ket_decrypt(running_machine &machine);
void pgm_espgal_decrypt(running_machine &machine);

46
src/mame/machine/pgmcrypt.c
View File

@ -946,6 +946,52 @@ void pgm_svg_decrypt(running_machine &machine)
}
}
static const unsigned char svgpcb_tab[0x100] = { // not checked
0x49, 0x47, 0x53, 0x30, 0x30, 0x31, 0x37, 0x52, 0x44, 0x31, 0x30, 0x35, 0x30, 0x35, 0x30, 0x34,
0x75, 0x0B, 0xF1, 0x6B, 0x6D, 0xD7, 0xA8, 0xE7, 0x0C, 0xC5, 0x28, 0x81, 0x1F, 0xCF, 0x30, 0x15,
0xA8, 0x0D, 0xDA, 0x76, 0xF8, 0x7D, 0xD6, 0xE1, 0x0A, 0x11, 0xE3, 0xA4, 0x23, 0xFF, 0x8E, 0x0B,
0xA8, 0x44, 0x2F, 0x8B, 0x3F, 0x7A, 0x21, 0x32, 0x2A, 0xDC, 0x41, 0x4E, 0xE0, 0x97, 0xA9, 0x5D,
0xED, 0x53, 0xAE, 0x35, 0x0B, 0x02, 0x18, 0x74, 0x82, 0xE8, 0xA1, 0x2A, 0xBD, 0xEB, 0xB0, 0xC6,
0x2E, 0x1D, 0x56, 0x3E, 0x63, 0x87, 0x8A, 0x83, 0x69, 0x38, 0xA1, 0x24, 0x61, 0x8F, 0x11, 0x41,
0x61, 0xC5, 0x67, 0xB3, 0x8E, 0xBE, 0x85, 0x79, 0x77, 0x10, 0x21, 0x66, 0xB4, 0x54, 0x7B, 0x09,
0xBF, 0xAD, 0x5E, 0xDD, 0x12, 0x97, 0x5A, 0xB2, 0x82, 0xF3, 0x40, 0x5B, 0xDB, 0x4F, 0xDE, 0x99,
0xBD, 0x7A, 0xFC, 0x48, 0xB6, 0x48, 0x97, 0xC8, 0xA1, 0xA2, 0x5C, 0xAE, 0x3E, 0xD2, 0x68, 0xAC,
0x13, 0x0D, 0x3F, 0xBE, 0x82, 0x42, 0x0A, 0x97, 0x2C, 0x22, 0x16, 0x4B, 0x85, 0x70, 0x89, 0x3D,
0xB8, 0x8B, 0x66, 0x4C, 0xBD, 0x39, 0xC4, 0x39, 0xB9, 0xB6, 0x4B, 0x5C, 0x96, 0xFC, 0xEF, 0x87,
0xE3, 0x55, 0xF1, 0x3B, 0xED, 0x1F, 0x13, 0x0A, 0x1F, 0xDF, 0x1A, 0x4C, 0x97, 0x8A, 0x8A, 0x06,
0x0A, 0x0F, 0x9D, 0x17, 0xDA, 0x28, 0x85, 0xA4, 0x75, 0x63, 0xE4, 0xC6, 0xF1, 0x6B, 0x88, 0x73,
0xE6, 0x9C, 0x6B, 0xAA, 0x8B, 0xC7, 0xEA, 0xE3, 0x13, 0x42, 0x46, 0xB6, 0x4A, 0x34, 0x59, 0xCA,
0x6C, 0x1F, 0x99, 0x01, 0x46, 0xAE, 0x52, 0xE1, 0x90, 0xC1, 0x1F, 0x46, 0x89, 0xB7, 0xAB, 0x46,
0xD4, 0xFB, 0xA6, 0x65, 0x92, 0xD1, 0x0A, 0xFA, 0xC1, 0x63, 0x90, 0xE1, 0xD5, 0x07, 0x6D, 0x62
};
void pgm_svgpcb_decrypt(running_machine &machine)
{
int i;
UINT16 *src = (UINT16 *)(machine.region("user1")->base());
int rom_size = 0x800000;
for (i = 0; i < rom_size/2; i++) {
UINT16 x = src[i];
// preliminary!
if ((i & 0x040080) != 0x000080) x ^= 0x0001; // ok?
if ((i & 0x084008) == 0x084008) x ^= 0x0002;
if ((i & 0x080030) == 0x080010) x ^= 0x0004;
if ((i & 0x000242) != 0x000042) x ^= 0x0008; // ok?
if ((i & 0x048100) == 0x048000) x ^= 0x0010; //
if ((i & 0x022004) != 0x000004) x ^= 0x0020; // ok?
if ((i & 0x011800) != 0x010000) x ^= 0x0040;
if ((i & 0x000820) == 0x000820) x ^= 0x0080;
x ^= svgpcb_tab[(i >> 1) & 0xff] << 8;
src[i] = x;
}
}
static const UINT8 py2k2_tab[256] = {
0x74, 0xe8, 0xa8, 0x64, 0x26, 0x44, 0xa6, 0x9a, 0xa5, 0x69, 0xa2, 0xd3, 0x6d, 0xba, 0xff, 0xf3,
0xeb, 0x6e, 0xe3, 0x70, 0x72, 0x58, 0x27, 0xd9, 0xe4, 0x9f, 0x50, 0xa2, 0xdd, 0xce, 0x6e, 0xf6,