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General Emulation => MAME => Topic started by: Multipass on March 07, 2009, 08:43:23 PM

Title: Mame driver for kov2p205
Post by: Multipass on March 07, 2009, 08:43:23 PM

Hello all :)
I just need a little help for to make a driver for mame plus. It's for pgm game kov2p205.
Istart the translation" of the fba code found in ggolge code but the game don't start.I have put the kov2p tables, kov2p decrypt and kov2p patch, and i have some bugs. With driver init too, i have a bug.
Please just need a little help, more thanks for your attention
Bye all

Title: Re: Mame driver for kov2p205
Post by: iq_132 on March 07, 2009, 09:31:17 PM

Here's the nasty code I was using (MAME .128).

Code: [Select]

static const unsigned char kov2p_tab[256] = {
0x44, 0x47, 0xB8, 0x28, 0x03, 0xA2, 0x21, 0xBC, 0x17, 0x32, 0x4E, 0xE2, 0xDF, 0x69, 0x35, 0xC7,
0xA2, 0x06, 0xEC, 0x36, 0xD2, 0x44, 0x12, 0x6A, 0x8D, 0x51, 0x6B, 0x20, 0x69, 0x01, 0xCA, 0xF0,
0x71, 0xC4, 0x34, 0xDC, 0x6B, 0xD6, 0x42, 0x2A, 0x5D, 0xB5, 0xC7, 0x6F, 0x4F, 0xD8, 0xB3, 0xED,
0x51, 0x9E, 0x37, 0x1E, 0xC0, 0x85, 0x2A, 0x91, 0xC6, 0x9C, 0xAC, 0xF5, 0x20, 0x3B, 0x09, 0x74,
0x24, 0xF1, 0xE0, 0x42, 0x02, 0xBE, 0x84, 0x75, 0x4A, 0x82, 0xA2, 0x17, 0xAE, 0xB6, 0x24, 0x79,
0x0A, 0x5A, 0x56, 0xCB, 0xA1, 0x2E, 0x47, 0xEA, 0xA9, 0x25, 0x73, 0x79, 0x0B, 0x17, 0x9E, 0x33,
0x64, 0xB6, 0x03, 0x7F, 0x4F, 0xC3, 0xAE, 0x45, 0xE6, 0x82, 0x27, 0x01, 0x86, 0x6B, 0x50, 0x16,
0xD3, 0x22, 0x90, 0x64, 0xFC, 0xA9, 0x31, 0x1C, 0x41, 0xD5, 0x07, 0xD3, 0xB2, 0xFE, 0x53, 0xD6,
0x39, 0xFB, 0xE6, 0xBE, 0xDA, 0x4D, 0x8A, 0x44, 0x3A, 0x9B, 0x9D, 0x56, 0x5E, 0x5F, 0xFF, 0x6A,
0xB6, 0xDE, 0x2F, 0x12, 0x5A, 0x5D, 0xB0, 0xD0, 0x93, 0x92, 0xB2, 0x2C, 0x9D, 0x59, 0xEE, 0x05,
0xAB, 0xA8, 0xD2, 0x25, 0x2C, 0xC5, 0xDE, 0x18, 0x4D, 0xB6, 0x4E, 0x3D, 0xBF, 0xFA, 0xF9, 0x1D,
0xBA, 0x76, 0x79, 0xFC, 0x42, 0xB2, 0x8C, 0xAE, 0xA9, 0x45, 0xBA, 0xAC, 0x55, 0x8E, 0x38, 0x67,
0xC3, 0xA5, 0x0D, 0xDC, 0xCC, 0x91, 0x73, 0x69, 0x27, 0xBC, 0x80, 0xDF, 0x30, 0xA4, 0x05, 0xD8,
0xE7, 0xD2, 0xB7, 0x4B, 0x3C, 0x10, 0x8C, 0x5D, 0x8A, 0xD7, 0x68, 0x7A, 0x61, 0x07, 0xF9, 0xA5,
0x88, 0xDA, 0xDF, 0x0C, 0x42, 0x1B, 0x11, 0xE0, 0xD1, 0x93, 0x7C, 0x63, 0x39, 0xC5, 0xED, 0x43,
0x46, 0xDB, 0x30, 0x26, 0xD0, 0xDF, 0x7A, 0x86, 0x3E, 0x2E, 0x04, 0xBF, 0x49, 0x2A, 0xF9, 0x66
};

void pgm_kov2p_decrypt(running_machine *machine)
{
int i,x;
UINT16 *rom = (UINT16 *)(memory_region(machine, "user1"));
// hack...
UINT8 *src = (UINT8*)rom;


for (i = 0; i < 0x200000 / 2; i++) {
x = kov2p_tab[(i >> 1) & 0xff] << 8;

    if ((i & 0x040080) != 0x000080) x |= 0x0001;
if ((i & 0x004008) == 0x004008) x |= 0x0002;
if ((i & 0x080030) == 0x080010) x |= 0x0004;
if ((i & 0x000242) != 0x000042) x |= 0x0008;
if ((i & 0x008100) == 0x008000) x |= 0x0010;
    if ((i & 0x002004) != 0x000004) x |= 0x0020;
if ((i & 0x011800) != 0x010000) x |= 0x0040;
if ((i & 0x000820) == 0x000820) x |= 0x0080;

rom[i] ^= x;
}

   src[0xDE] = 0xC0;
   src[0xDF] = 0x46;
src[0x4ED8] = 0xA8;// B0
src[0x4EDC] = 0x9C;// A4
src[0x4EE0] = 0x5C;// 64
src[0x4EE4] = 0x94;// 9C
src[0x4EE8] = 0xE8;// F0
src[0x4EEC] = 0x6C;// 74
src[0x4EF0] = 0xD4;// DC
src[0x4EF4] = 0x50;// 58
src[0x4EF8] = 0x80;// 88
src[0x4EFC] = 0x9C;// A4
src[0x4F00] = 0x28;// 30
src[0x4F04] = 0x30;// 38
src[0x4F08] = 0x34;// 3C
src[0x4F0C] = 0x1C;// 24
   src[0x1FFFFC] = 0x33;
   src[0x1FFFFD] = 0x99;
}

static DRIVER_INIT( kov2p )
{

pgm_basic_init(machine);
pgm_kov2p_decrypt(machine);

}


Title: Re: Mame driver for kov2p205
Post by: Multipass on March 07, 2009, 10:28:22 PM

Now fully works!
More more thanks for your help iq_132, if you need my help i'm here
More thanks for all your work too!
Bye friend ;)