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// license:BSD-3-Clause
// copyright-holders:David Haywood, ElSemi
/* IGS 027 Encryptions

  the IGS027 chips are typically used with encrypted ROMs.

  Games with an External ARM Rom usually have that ROM encrypted
  otherwise (in the case of PGM) the 68k ROM ends up encrypted
  instead.  The encryption is controlled by a set of registers
  mapped to ARM space where the table and some additional values
  are uploaded.  We don't currently emulate this in realtime
  even for cases where the internal ROM is dumped.

*/



#include "emu.h"
#include "pgmcrypt.h"

// a common set of these are used, selectable in the real scheme by an uploaded bitfield
// some may be duplicates simply due to differing rom sizes

#define IGS27_CRYPT1 \
	if ((i & 0x040480) != 0x000080) x ^= 0x0001;
#define IGS27_CRYPT1_ALT \
	if ((i & 0x040080) != 0x000080) x ^= 0x0001;
#define IGS27_CRYPT1_ALT2 \
	if ((i & 0x0480) != 0x0080) x ^= 0x0001;
#define IGS27_CRYPT2 \
	if ((i & 0x104008) == 0x104008) x ^= 0x0002;
#define IGS27_CRYPT2_ALT \
	if ((i & 0x004008) == 0x004008) x ^= 0x0002;
#define IGS27_CRYPT2_ALT2 \
	if((i & 0x004008) == 0x004008 && (i & 0x180000) != 0x000000) x ^= 0x0002;
#define IGS27_CRYPT2_ALT3 \
		if((i & 0x84008) == 0x84008) x ^= 0x0002;
#define IGS27_CRYPT3 \
	if ((i & 0x080030) == 0x080010) x ^= 0x0004;
#define IGS27_CRYPT3_ALT \
	if((i & 0x000030) == 0x000010 && (i & 0x180000) != 0x080000) x ^= 0x0004;
#define IGS27_CRYPT3_ALT2 \
	if ((i & 0x000030) == 0x000010) x ^= 0x0004;
// ket - due to address starting at 0 and not 100000/2!
#define IGS27_CRYPT3_ALT3 \
	if ((i & 0x080030) == 0x000010) x ^= 0x0004;
#define IGS27_CRYPT4 \
	if ((i & 0x000242) != 0x000042) x ^= 0x0008;
#define IGS27_CRYPT4_ALT \
	if ((i & 0x000042) != 0x000042) x ^= 0x0008;
#define IGS27_CRYPT5 \
	if ((i & 0x008100) == 0x008000) x ^= 0x0010;
#define IGS27_CRYPT5_ALT \
	if ((i & 0x48100) == 0x48000) x ^= 0x0010;
#define IGS27_CRYPT6 \
	if ((i & 0x002004) != 0x000004) x ^= 0x0020;
#define IGS27_CRYPT6_ALT \
	if ((i & 0x022004) != 0x000004) x ^= 0x0020;
#define IGS27_CRYPT7 \
	if ((i & 0x011800) != 0x010000) x ^= 0x0040;
#define IGS27_CRYPT7_ALT \
	if ((i & 0x01800) != 0x00000) x ^= 0x0040;
#define IGS27_CRYPT8 \
	if ((i & 0x004820) == 0x004820) x ^= 0x0080;
#define IGS27_CRYPT8_ALT \
	if ((i & 0x000820) == 0x000820) x ^= 0x0080;

static const uint8_t kov_tab[256] = {
	0x17, 0x1c, 0xe3, 0x02, 0x62, 0x59, 0x97, 0x4a, 0x67, 0x4d, 0x1f, 0x11, 0x76, 0x64, 0xc1, 0xe1,
	0xd2, 0x41, 0x9f, 0xfd, 0xfa, 0x04, 0xfe, 0xab, 0x89, 0xeb, 0xc0, 0xf5, 0xac, 0x2b, 0x64, 0x22,
	0x90, 0x7d, 0x88, 0xc5, 0x8c, 0xe0, 0xd9, 0x70, 0x3c, 0xf4, 0x7d, 0x31, 0x1c, 0xca, 0xe2, 0xf1,
	0x31, 0x82, 0x86, 0xb1, 0x55, 0x95, 0x77, 0x01, 0x77, 0x3b, 0xab, 0xe6, 0x88, 0xef, 0x77, 0x11,
	0x56, 0x01, 0xac, 0x55, 0xf7, 0x6d, 0x9b, 0x6d, 0x92, 0x14, 0x23, 0xae, 0x4b, 0x80, 0xae, 0x6a,
	0x43, 0xcc, 0x35, 0xfe, 0xa1, 0x0d, 0xb3, 0x21, 0x4e, 0x4c, 0x99, 0x80, 0xc2, 0x3d, 0xce, 0x46,
	0x9b, 0x5d, 0x68, 0x75, 0xfe, 0x1e, 0x25, 0x41, 0x24, 0xa0, 0x79, 0xfd, 0xb5, 0x67, 0x93, 0x07,
	0x3a, 0x78, 0x24, 0x64, 0xe1, 0xa3, 0x62, 0x75, 0x38, 0x65, 0x8a, 0xbf, 0xf9, 0x7c, 0x00, 0xa0,
	0x6d, 0xdb, 0x1f, 0x80, 0x37, 0x37, 0x8e, 0x97, 0x1a, 0x45, 0x61, 0x0e, 0x10, 0x24, 0x8a, 0x27,
	0xf2, 0x44, 0x91, 0x3e, 0x62, 0x44, 0xc5, 0x55, 0xe6, 0x8e, 0x5a, 0x25, 0x8a, 0x90, 0x25, 0x74,
	0xa0, 0x95, 0x33, 0xf7, 0x51, 0xce, 0xe4, 0xa0, 0x13, 0xcf, 0x33, 0x1e, 0x59, 0x5b, 0xec, 0x42,
	0xc5, 0xb8, 0xe4, 0xc5, 0x71, 0x38, 0xc5, 0x6b, 0x8d, 0x1d, 0x84, 0xf8, 0x4e, 0x21, 0x6d, 0xdc,
	0x2c, 0xf1, 0xae, 0xad, 0x19, 0xc5, 0xed, 0x8e, 0x36, 0xb5, 0x81, 0x94, 0xfe, 0x62, 0x3a, 0xe8,
	0xc9, 0x95, 0x84, 0xbd, 0x65, 0x15, 0x16, 0x15, 0xd2, 0xe7, 0x16, 0xd7, 0x9c, 0xd3, 0xd2, 0x66,
	0xf6, 0x46, 0xe3, 0x32, 0x62, 0x51, 0x86, 0x4a, 0x67, 0xcc, 0x4d, 0xea, 0x37, 0x45, 0xd5, 0xa6,
	0x80, 0xe6, 0xba, 0xb3, 0x08, 0xd8, 0x30, 0x5b, 0x5f, 0xf2, 0x5a, 0xfb, 0x63, 0xb0, 0xa4, 0x41
};

void pgm_kov_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3_ALT
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= kov_tab[i & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t kovsh_tab[256] = {
	0xe7, 0x06, 0xa3, 0x70, 0xf2, 0x58, 0xe6, 0x59, 0xe4, 0xcf, 0xc2, 0x79, 0x1d, 0xe3, 0x71, 0x0e,
	0xb6, 0x90, 0x9a, 0x2a, 0x8c, 0x41, 0xf7, 0x82, 0x9b, 0xef, 0x99, 0x0c, 0xfa, 0x2f, 0xf1, 0xfe,
	0x8f, 0x70, 0xf4, 0xc1, 0xb5, 0x3d, 0x7c, 0x60, 0x4c, 0x09, 0xf4, 0x2e, 0x7c, 0x87, 0x63, 0x5f,
	0xce, 0x99, 0x84, 0x95, 0x06, 0x9a, 0x20, 0x23, 0x5a, 0xb9, 0x52, 0x95, 0x48, 0x2c, 0x84, 0x60,
	0x69, 0xe3, 0x93, 0x49, 0xb9, 0xd6, 0xbb, 0xd6, 0x9e, 0xdc, 0x96, 0x12, 0xfa, 0x60, 0xda, 0x5f,
	0x55, 0x5d, 0x5b, 0x20, 0x07, 0x1e, 0x97, 0x42, 0x77, 0xea, 0x1d, 0xe0, 0x70, 0xfb, 0x6a, 0x00,
	0x77, 0x9a, 0xef, 0x1b, 0xe0, 0xf9, 0x0d, 0xc1, 0x2e, 0x2f, 0xef, 0x25, 0x29, 0xe5, 0xd8, 0x2c,
	0xaf, 0x01, 0xd9, 0x6c, 0x31, 0xce, 0x5c, 0xea, 0xab, 0x1c, 0x92, 0x16, 0x61, 0xbc, 0xe4, 0x7c,
	0x5a, 0x76, 0xe9, 0x92, 0x39, 0x5b, 0x97, 0x60, 0xea, 0x57, 0x83, 0x9c, 0x92, 0x29, 0xa7, 0x12,
	0xa9, 0x71, 0x7a, 0xf9, 0x07, 0x68, 0xa7, 0x45, 0x88, 0x10, 0x81, 0x12, 0x2c, 0x67, 0x4d, 0x55,
	0x33, 0xf0, 0xfa, 0xd7, 0x1d, 0x4d, 0x0e, 0x63, 0x03, 0x34, 0x65, 0xe2, 0x76, 0x0f, 0x98, 0xa9,
	0x5f, 0x9a, 0xd3, 0xca, 0xdd, 0xc1, 0x5b, 0x3d, 0x4d, 0xf8, 0x40, 0x08, 0xdc, 0x05, 0x38, 0x00,
	0xcb, 0x24, 0x02, 0xff, 0x39, 0xe2, 0x9e, 0x04, 0x9a, 0x08, 0x63, 0xc8, 0x2b, 0x5a, 0x34, 0x06,
	0x62, 0xc1, 0xbb, 0x8a, 0xd0, 0x54, 0x4c, 0x43, 0x21, 0x4e, 0x4c, 0x99, 0x80, 0xc2, 0x3d, 0xce,
	0x2a, 0x7b, 0x09, 0x62, 0x1a, 0x91, 0x9b, 0xc3, 0x41, 0x24, 0xa0, 0xfd, 0xb5, 0x67, 0x93, 0x07,
	0xa7, 0xb8, 0x85, 0x8a, 0xa1, 0x1e, 0x4f, 0xb6, 0x75, 0x38, 0x65, 0x8a, 0xf9, 0x7c, 0x00, 0xa0,
};


void pgm_kovsh_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2_ALT2
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= kovsh_tab[i & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t photoy2k_tab[256] = {
	0xd9, 0x92, 0xb2, 0xbc, 0xa5, 0x88, 0xe3, 0x48, 0x7d, 0xeb, 0xc5, 0x4d, 0x31, 0xe4, 0x82, 0xbc,
	0x82, 0xcf, 0xe7, 0xf3, 0x15, 0xde, 0x8f, 0x91, 0xef, 0xc6, 0xb8, 0x81, 0x97, 0xe3, 0xdf, 0x4d,
	0x88, 0xbf, 0xe4, 0x05, 0x25, 0x73, 0x1e, 0xd0, 0xcf, 0x1e, 0xeb, 0x4d, 0x18, 0x4e, 0x6f, 0x9f,
	0x00, 0x72, 0xc3, 0x74, 0xbe, 0x02, 0x09, 0x0a, 0xb0, 0xb1, 0x8e, 0x9b, 0x08, 0xed, 0x68, 0x6d,
	0x25, 0xe8, 0x28, 0x94, 0xa6, 0x44, 0xa6, 0xfa, 0x95, 0x69, 0x72, 0xd3, 0x6d, 0xb6, 0xff, 0xf3,
	0x45, 0x4e, 0xa3, 0x60, 0xf2, 0x58, 0xe7, 0x59, 0xe4, 0x4f, 0x70, 0xd2, 0xdd, 0xc0, 0x6e, 0xf3,
	0xd7, 0xb2, 0xdc, 0x1e, 0xa8, 0x41, 0x07, 0x5d, 0x60, 0x15, 0xea, 0xcf, 0xdb, 0xc1, 0x1d, 0x4d,
	0xb7, 0x42, 0xec, 0xc4, 0xca, 0xa9, 0x40, 0x30, 0x0f, 0x3c, 0xe2, 0x81, 0xe0, 0x5c, 0x51, 0x07,
	0xb0, 0x1e, 0x4a, 0xb3, 0x64, 0x3e, 0x1c, 0x62, 0x17, 0xcd, 0xf2, 0xe4, 0x14, 0x9d, 0xa6, 0xd4,
	0x64, 0x36, 0xa5, 0xe8, 0x7e, 0x84, 0x0e, 0xb3, 0x5d, 0x79, 0x57, 0xea, 0xd7, 0xad, 0xbc, 0x9e,
	0x2d, 0x90, 0x03, 0x9e, 0x0e, 0xc6, 0x98, 0xdb, 0xe3, 0xb6, 0x9f, 0x9b, 0xf6, 0x21, 0xe6, 0x98,
	0x94, 0x77, 0xb7, 0x2b, 0xaa, 0xc9, 0xff, 0xef, 0x7a, 0xf2, 0x71, 0x4e, 0x52, 0x06, 0x85, 0x37,
	0x81, 0x8e, 0x86, 0x64, 0x39, 0x92, 0x2a, 0xca, 0xf3, 0x3e, 0x87, 0xb5, 0x0c, 0x7b, 0x42, 0x5e,
	0x04, 0xa7, 0xfb, 0xd7, 0x13, 0x7f, 0x83, 0x6a, 0x77, 0x0f, 0xa7, 0x34, 0x51, 0x88, 0x9c, 0xac,
	0x23, 0x90, 0x4d, 0x4d, 0x72, 0x4e, 0xa3, 0x26, 0x1a, 0x45, 0x61, 0x0e, 0x10, 0x24, 0x8a, 0x27,
	0x92, 0x14, 0x23, 0xae, 0x4b, 0x80, 0xae, 0x6a, 0x56, 0x01, 0xac, 0x55, 0xf7, 0x6d, 0x9b, 0x6d,
};

void pgm_photoy2k_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2_ALT3
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5_ALT
		IGS27_CRYPT6
		IGS27_CRYPT7_ALT
		IGS27_CRYPT8

		x ^= photoy2k_tab[i & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t pstar[256] = {
	0x62, 0x59, 0x17, 0xe3, 0xe1, 0x11, 0x02, 0x97, 0x67, 0x4d, 0x4a, 0x1c, 0x1f, 0x76, 0x64, 0xc1,
	0xfa, 0x04, 0xd2, 0x9f, 0x22, 0xf5, 0xfd, 0xfe, 0x89, 0xeb, 0xab, 0x41, 0xc0, 0xac, 0x2b, 0x64,
	0xfe, 0x1e, 0x9b, 0x68, 0x07, 0xfd, 0x75, 0x25, 0x24, 0xa0, 0x41, 0x5d, 0x79, 0xb5, 0x67, 0x93,
	0xe1, 0xa3, 0x3a, 0x24, 0xa0, 0xbf, 0x64, 0x62, 0x38, 0x65, 0x75, 0x78, 0x8a, 0xf9, 0x7c, 0x00,
	0x71, 0x38, 0xc5, 0xe4, 0xdc, 0xf8, 0xc5, 0xc5, 0x8d, 0x1d, 0x6b, 0xb8, 0x84, 0x4e, 0x21, 0x6d,
	0x55, 0x95, 0x31, 0x86, 0x11, 0xe6, 0xb1, 0x77, 0x77, 0x3b, 0x01, 0x82, 0xab, 0x88, 0xef, 0x77,
	0x08, 0xd8, 0x80, 0xba, 0x41, 0xfb, 0xb3, 0x30, 0x5f, 0xf2, 0x5b, 0xe6, 0x5a, 0x63, 0xb0, 0xa4,
	0x37, 0x37, 0x6d, 0x1f, 0x27, 0x0e, 0x80, 0x8e, 0x1a, 0x45, 0x97, 0xdb, 0x61, 0x10, 0x24, 0x8a,
	0x62, 0x44, 0xf2, 0x91, 0x74, 0x25, 0x3e, 0xc5, 0xe6, 0x8e, 0x55, 0x44, 0x5a, 0x8a, 0x90, 0x25,
	0xa1, 0x0d, 0x43, 0x35, 0x46, 0x80, 0xfe, 0xb3, 0x4e, 0x4c, 0x21, 0xcc, 0x99, 0xc2, 0x3d, 0xce,
	0x19, 0xc5, 0x2c, 0xae, 0xe8, 0x94, 0xad, 0xed, 0x36, 0xb5, 0x8e, 0xf1, 0x81, 0xfe, 0x62, 0x3a,
	0x8c, 0xe0, 0x90, 0x88, 0xf1, 0x31, 0xc5, 0xd9, 0x3c, 0xf4, 0x70, 0x7d, 0x7d, 0x1c, 0xca, 0xe2,
	0x51, 0xce, 0xa0, 0x33, 0x42, 0x1e, 0xf7, 0xe4, 0x13, 0xcf, 0xa0, 0x95, 0x33, 0x59, 0x5b, 0xec,
	0xf7, 0x6d, 0x56, 0xac, 0x6a, 0xae, 0x55, 0x9b, 0x92, 0x14, 0x6d, 0x01, 0x23, 0x4b, 0x80, 0xae,
	0x65, 0x15, 0xc9, 0x84, 0x66, 0xd7, 0xbd, 0x16, 0xd2, 0xe7, 0x15, 0x95, 0x16, 0x9c, 0xd3, 0xd2,
	0x62, 0x51, 0xf6, 0xe3, 0xa6, 0xea, 0x32, 0x86, 0x67, 0xcc, 0x4a, 0x46, 0x4d, 0x37, 0x45, 0xd5,
};

void pgm_pstar_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x100000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x = x ^ pstar[(i & 255)] << 8;
		src[i] = x ;
	}
}

static const uint8_t dfront_tab[256] = {
	0x51, 0xc4, 0xe3, 0x10, 0x1c, 0xad, 0x8a, 0x39, 0x8c, 0xe0, 0xa5, 0x04, 0x0f, 0xe4, 0x35, 0xc3,
	0x2d, 0x6b, 0x32, 0xe2, 0x60, 0x54, 0x63, 0x06, 0xa3, 0xf1, 0x0b, 0x5f, 0x6c, 0x5c, 0xb3, 0xec,
	0x77, 0x61, 0x69, 0xe7, 0x3c, 0xb7, 0x42, 0x72, 0x1a, 0x70, 0xb0, 0x96, 0xa4, 0x28, 0xc0, 0xfb,
	0x0a, 0x00, 0xcb, 0x15, 0x49, 0x48, 0xd3, 0x94, 0x58, 0xcf, 0x41, 0x86, 0x17, 0x71, 0xb1, 0xbd,
	0x21, 0x01, 0x37, 0x1e, 0xba, 0xeb, 0xf3, 0x59, 0xf6, 0xa7, 0x29, 0x4f, 0xb5, 0xca, 0x4c, 0x34,
	0x20, 0xa2, 0x62, 0x4b, 0x93, 0x9e, 0x47, 0x9f, 0x8d, 0x0e, 0x1b, 0xb6, 0x4d, 0x82, 0xd5, 0xf4,
	0x85, 0x79, 0x53, 0x92, 0x9b, 0xf7, 0xea, 0x44, 0x76, 0x1f, 0x22, 0x45, 0xed, 0xbe, 0x11, 0x55,
	0xaf, 0xf5, 0xf8, 0x50, 0x07, 0xe6, 0xc7, 0x5e, 0xd7, 0xde, 0xe5, 0x26, 0x2b, 0xf2, 0x6a, 0x8b,
	0xb8, 0x98, 0x89, 0xdb, 0x14, 0x5b, 0xc5, 0x78, 0xdc, 0xd0, 0x87, 0x5d, 0xc1, 0x0d, 0x95, 0x97,
	0x7e, 0xa8, 0x24, 0x3d, 0xe1, 0xd1, 0x19, 0xa6, 0x99, 0xd8, 0x83, 0x1d, 0xff, 0x30, 0x9d, 0x05,
	0xd4, 0x02, 0x27, 0x7b, 0x13, 0xb2, 0x7f, 0x40, 0x12, 0xa0, 0x68, 0x67, 0x4e, 0x3a, 0x46, 0xb9,
	0xee, 0xdf, 0x66, 0xd6, 0x8f, 0xa9, 0x0c, 0x91, 0x65, 0x18, 0x52, 0x56, 0xd9, 0x74, 0x09, 0x6e,
	0xc6, 0x73, 0xc9, 0xfc, 0x03, 0x43, 0xef, 0xaa, 0x7c, 0xbb, 0x2c, 0x90, 0xcc, 0xce, 0xe8, 0xae,
	0x2a, 0xf9, 0x57, 0x88, 0xc8, 0xe9, 0x5a, 0xdd, 0x2e, 0x7d, 0x64, 0xc2, 0x6d, 0x3e, 0xfa, 0x80,
	0x16, 0xcd, 0x6f, 0x84, 0x8e, 0x9c, 0xf0, 0xac, 0xb4, 0x9a, 0x2f, 0xbc, 0x31, 0x23, 0xfe, 0x38,
	0x08, 0x75, 0xa1, 0x33, 0xab, 0xd2, 0xda, 0x81, 0xbf, 0x7a, 0x3b, 0x3f, 0x4a, 0xfd, 0x25, 0x36,
};

void pgm_dfront_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2
		IGS27_CRYPT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= dfront_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t ddp2_tab[256] = {
	0x2a, 0x4a, 0x39, 0x98, 0xac, 0x39, 0xb2, 0x55, 0x72, 0xf3, 0x7b, 0x3c, 0xee, 0x94, 0x6e, 0xd5,
	0xcd, 0xbc, 0x9a, 0xd0, 0x45, 0x7d, 0x49, 0x68, 0xb1, 0x61, 0x54, 0xef, 0xa2, 0x84, 0x29, 0x20,
	0x32, 0x52, 0x82, 0x04, 0x38, 0x69, 0x9f, 0x24, 0x46, 0xf4, 0x3f, 0xc2, 0xf1, 0x25, 0xac, 0x2d,
	0xdf, 0x2d, 0xb4, 0x51, 0xc7, 0xb5, 0xe5, 0x88, 0xbd, 0x3b, 0x5a, 0x25, 0x5b, 0xc7, 0xae, 0x5f,
	0x43, 0xcf, 0x89, 0xd9, 0xe2, 0x63, 0xc6, 0x76, 0x21, 0x2b, 0x77, 0xc0, 0x27, 0x98, 0xfd, 0x09,
	0xe1, 0x8c, 0x26, 0x2e, 0x92, 0x99, 0xbc, 0xbe, 0x0e, 0xba, 0xbf, 0x70, 0xe7, 0xb7, 0xe9, 0x37,
	0x5c, 0xd1, 0x5e, 0xad, 0x22, 0x17, 0xc5, 0x67, 0x9d, 0xc6, 0xfb, 0x53, 0xc7, 0x4d, 0x32, 0xb4,
	0xf2, 0x43, 0x53, 0x7c, 0x01, 0xfe, 0xd2, 0x91, 0x40, 0x85, 0xa3, 0xe8, 0xdf, 0xdb, 0xff, 0x6c,
	0x64, 0x15, 0xcd, 0x8e, 0x07, 0x82, 0x78, 0x8d, 0x4e, 0x2d, 0x66, 0x8a, 0x62, 0x6f, 0xd3, 0x6a,
	0xae, 0x16, 0x44, 0x1e, 0xed, 0xc4, 0x12, 0x7a, 0xbe, 0x05, 0x06, 0xce, 0x9b, 0x8a, 0xf7, 0xf8,
	0x74, 0x23, 0x73, 0x74, 0xb8, 0x13, 0xc2, 0x42, 0xea, 0xf9, 0x7f, 0xa9, 0xaf, 0x56, 0xd6, 0xb3,
	0xb7, 0xc4, 0x47, 0x31, 0x67, 0xaa, 0x58, 0x8b, 0x47, 0x1b, 0xf5, 0x75, 0x95, 0x8f, 0xf0, 0x3a,
	0x85, 0x76, 0x59, 0x24, 0x0c, 0xd7, 0x00, 0xb3, 0xdc, 0xfc, 0x65, 0x34, 0xde, 0xfa, 0xd8, 0xc3,
	0xc3, 0x5e, 0xe3, 0x9e, 0x02, 0x28, 0x50, 0x81, 0x95, 0x2f, 0xe4, 0xb5, 0xa0, 0x4d, 0xa1, 0x36,
	0x9d, 0x18, 0x6d, 0x79, 0x19, 0x3b, 0x1d, 0xb8, 0xe1, 0xcc, 0x61, 0x1a, 0xe2, 0x31, 0x4c, 0x3f,
	0xdc, 0xca, 0xd4, 0xda, 0xcd, 0xd2, 0x83, 0xca, 0xeb, 0x4f, 0xf2, 0x2f, 0x2d, 0x2a, 0xec, 0x1f
};

void pgm_ddp2_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT2
		// NO CRYPT2
		// NO CRYPT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7_ALT
		IGS27_CRYPT8_ALT

		x ^= ddp2_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t mm_tab[256] = {
	0xd0, 0x45, 0xbc, 0x84, 0x93, 0x60, 0x7d, 0x49, 0x68, 0xb1, 0x54, 0xa2, 0x05, 0x29, 0x41, 0x20,
	0x04, 0x08, 0x52, 0x25, 0x89, 0xf4, 0x69, 0x9f, 0x24, 0x46, 0x3d, 0xf1, 0xf9, 0xab, 0xa6, 0x2d,
	0x18, 0x19, 0x6d, 0x33, 0x79, 0x23, 0x3b, 0x1d, 0xe0, 0xb8, 0x61, 0x1a, 0xe1, 0x4c, 0x5d, 0x3f,
	0x5e, 0x02, 0xe3, 0x4d, 0x9e, 0x80, 0x28, 0x50, 0xa0, 0x81, 0xe4, 0xa5, 0x97, 0xa1, 0x86, 0x36,
	0x1e, 0xed, 0x16, 0x8a, 0x44, 0x06, 0x64, 0x12, 0x9a, 0x7e, 0xce, 0x9b, 0xef, 0xf7, 0x3e, 0xf8,
	0x15, 0x07, 0xcb, 0x6f, 0x8e, 0x3c, 0x82, 0x70, 0x62, 0x8d, 0x66, 0x7a, 0x4e, 0xd3, 0xb6, 0x6a,
	0x51, 0xa7, 0x2c, 0xc7, 0xa4, 0x0b, 0xb5, 0xe5, 0x88, 0xbd, 0x5a, 0x5b, 0x1b, 0xae, 0xe6, 0x5f,
	0x2e, 0x92, 0x8c, 0xb7, 0x96, 0xba, 0x99, 0xbb, 0xbe, 0x0e, 0xbf, 0xe7, 0x2f, 0xe9, 0x30, 0x37,
	0x98, 0xac, 0x4a, 0x94, 0x38, 0xf3, 0x39, 0xb2, 0x55, 0x72, 0x7b, 0xee, 0xdd, 0x6e, 0x11, 0xd5,
	0x26, 0xa8, 0x71, 0xd6, 0x74, 0x7f, 0x13, 0xc2, 0x56, 0xea, 0xa9, 0xaf, 0xc3, 0x42, 0x03, 0xb3,
	0xc4, 0x6b, 0x47, 0xf0, 0x31, 0xf5, 0xaa, 0x58, 0x8f, 0x48, 0x75, 0x95, 0x35, 0x8b, 0x57, 0x3a,
	0x73, 0x0c, 0x59, 0xd8, 0x14, 0x65, 0xd7, 0x00, 0xfa, 0xdc, 0x34, 0xde, 0xc0, 0xb0, 0x87, 0xc1,
	0xc8, 0xcd, 0xd4, 0x2a, 0xda, 0xe8, 0xd2, 0x83, 0x0d, 0xca, 0xf2, 0x0f, 0xeb, 0xec, 0x9c, 0x1f,
	0xad, 0x22, 0xd1, 0x4b, 0x5c, 0xf6, 0x17, 0xc5, 0x67, 0x9d, 0xfb, 0xc9, 0xcc, 0x32, 0x1c, 0xb4,
	0xd9, 0xe2, 0xcf, 0x90, 0xb9, 0x2b, 0x63, 0xc6, 0x76, 0x21, 0x77, 0x27, 0xfc, 0xfd, 0x0a, 0x09,
	0x7c, 0x01, 0x43, 0xdb, 0x53, 0x85, 0xfe, 0x78, 0x91, 0x40, 0xa3, 0xdf, 0x4f, 0xff, 0x10, 0x6c,
};

void pgm_mm_decrypt(running_machine &machine) // and dw2001
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= mm_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t kov2_tab[256] = {
	0x11, 0x4a, 0x38, 0x98, 0xac, 0x39, 0xb2, 0x55, 0x72, 0xf3, 0x7b, 0x3c, 0xee, 0x94, 0x6e, 0xd5,
	0x41, 0xbc, 0x93, 0xd0, 0x45, 0x7d, 0x49, 0x68, 0xb1, 0x60, 0x54, 0xef, 0xa2, 0x84, 0x29, 0x20,
	0xa6, 0x52, 0x89, 0x04, 0x08, 0x69, 0x9f, 0x24, 0x46, 0xf4, 0x3d, 0xc3, 0xf1, 0x25, 0xab, 0x2d,
	0xe6, 0x2c, 0xa4, 0x51, 0xa7, 0xb5, 0xe5, 0x88, 0xbd, 0x0b, 0x5a, 0x35, 0x5b, 0xc7, 0xae, 0x5f,
	0x0a, 0xcf, 0xb9, 0xd9, 0xe2, 0x63, 0xc6, 0x76, 0x21, 0x2b, 0x77, 0xc0, 0x27, 0x90, 0xfd, 0x09,
	0x30, 0x8c, 0x96, 0x2e, 0x92, 0x99, 0xbb, 0xbe, 0x0e, 0xba, 0xbf, 0x80, 0xe7, 0xb7, 0xe9, 0x37,
	0x1c, 0xd1, 0x5c, 0xad, 0x22, 0x17, 0xc5, 0x67, 0x9d, 0xf6, 0xfb, 0x23, 0xc9, 0x4b, 0x32, 0xb4,
	0x10, 0x43, 0x53, 0x7c, 0x01, 0xfe, 0x78, 0x91, 0x40, 0x85, 0xa3, 0xe8, 0xdf, 0xdb, 0xff, 0x6c,
	0xb6, 0x15, 0xcb, 0x8e, 0x07, 0x82, 0x70, 0x8d, 0x4e, 0xdd, 0x66, 0x7a, 0x62, 0x6f, 0xd3, 0x6a,
	0x3e, 0x16, 0x44, 0x1e, 0xed, 0x64, 0x12, 0x9a, 0x7e, 0x05, 0x06, 0xce, 0x9b, 0x8a, 0xf7, 0xf8,
	0x03, 0x26, 0x71, 0x74, 0xa8, 0x13, 0xc2, 0x42, 0xea, 0xf9, 0x7f, 0xa9, 0xaf, 0x56, 0xd6, 0xb3,
	0x57, 0xc4, 0x47, 0x31, 0x6b, 0xaa, 0x58, 0x8b, 0x48, 0x1b, 0xf5, 0x75, 0x95, 0x8f, 0xf0, 0x3a,
	0x87, 0x73, 0x59, 0x14, 0x0c, 0xd7, 0x00, 0xb0, 0xdc, 0xfc, 0x65, 0x34, 0xde, 0xfa, 0xd8, 0xc1,
	0x86, 0x5e, 0xe3, 0x9e, 0x02, 0x28, 0x50, 0x81, 0x97, 0x2f, 0xe4, 0xa5, 0xa0, 0x4d, 0xa1, 0x36,
	0x5d, 0x18, 0x6d, 0x79, 0x19, 0x3b, 0x1d, 0xb8, 0xe1, 0xcc, 0x61, 0x1a, 0xe0, 0x33, 0x4c, 0x3f,
	0x9c, 0xc8, 0xd4, 0xda, 0xcd, 0xd2, 0x83, 0xca, 0xeb, 0x4f, 0xf2, 0x0f, 0x0d, 0x2a, 0xec, 0x1f,
};

void pgm_kov2_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		// NO CRYPT2
		IGS27_CRYPT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5_ALT
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7_ALT
		IGS27_CRYPT8_ALT

		x ^= kov2_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t 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;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= kov2p_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t puzzli2_tab[256] = {
	0xb7, 0x66, 0xa3, 0xc0, 0x51, 0x55, 0x6d, 0x63, 0x86, 0x60, 0x64, 0x6c, 0x67, 0x18, 0x0b, 0x05,
	0x62, 0xff, 0xe0, 0x1e, 0x30, 0x21, 0x2e, 0x40, 0x41, 0xb9, 0x60, 0x38, 0xd1, 0x24, 0x7e, 0x36,
	0x7a, 0x0b, 0x1c, 0x69, 0x4f, 0x09, 0xe1, 0x9e, 0xcf, 0xcd, 0x7c, 0x00, 0x73, 0x08, 0x77, 0x37,
	0x5f, 0x50, 0x32, 0x3e, 0xd3, 0x54, 0x77, 0x6b, 0x60, 0x60, 0x74, 0x7c, 0x55, 0x4f, 0x44, 0x5e,
	0x66, 0x5c, 0x58, 0x26, 0x35, 0x29, 0x3f, 0x35, 0x3f, 0x1c, 0x0b, 0x0d, 0x08, 0x5b, 0x59, 0x5c,
	0xa0, 0xa5, 0x87, 0x85, 0x24, 0x75, 0x5f, 0x42, 0x1b, 0xf3, 0x1a, 0x58, 0x17, 0x58, 0x71, 0x6b,
	0x69, 0x89, 0x7d, 0x3a, 0xf3, 0xc4, 0x5d, 0xa0, 0x4f, 0x27, 0x58, 0xc4, 0xa8, 0xdd, 0xa8, 0xfb,
	0xbe, 0xa4, 0xe2, 0xee, 0x07, 0x10, 0x90, 0x72, 0x99, 0x08, 0x68, 0x6d, 0x5c, 0x5c, 0x6d, 0x58,
	0x2f, 0xdc, 0x15, 0xd5, 0xd6, 0xd6, 0x3b, 0x3b, 0xf9, 0x32, 0xcc, 0xdd, 0xd4, 0xf1, 0xea, 0xed,
	0xe4, 0xf6, 0xf2, 0x91, 0xca, 0xc1, 0xed, 0xf2, 0xf6, 0xfb, 0xc0, 0xe8, 0xe3, 0xe7, 0xfa, 0xf1,
	0xf5, 0x08, 0x26, 0x2b, 0x2f, 0x34, 0x39, 0x13, 0x28, 0x07, 0x88, 0x5b, 0x8f, 0x94, 0x9b, 0x2e,
	0xf5, 0xab, 0x72, 0x76, 0x7a, 0x40, 0xb9, 0x09, 0xd8, 0x3b, 0xcd, 0x31, 0x3d, 0x42, 0xab, 0xb1,
	0xb5, 0xb9, 0x3b, 0xe3, 0x0b, 0x65, 0x18, 0xfb, 0x1f, 0x12, 0xe4, 0xe8, 0xec, 0xf2, 0xf7, 0xfc,
	0xc0, 0xe8, 0xe0, 0xe6, 0xfa, 0xf1, 0xf4, 0x0b, 0x26, 0x2b, 0x30, 0x35, 0x39, 0x13, 0x29, 0x21,
	0x0c, 0x11, 0x16, 0x1b, 0x1f, 0x64, 0x0e, 0x60, 0x05, 0x79, 0x7c, 0x37, 0x00, 0x0f, 0x4f, 0x38,
	0x1d, 0x18, 0xa2, 0xb6, 0xb2, 0xa9, 0xac, 0xab, 0xae, 0x91, 0x98, 0x8d, 0x91, 0xbb, 0xb1, 0xc0,
};

void pgm_puzzli2_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x100000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= puzzli2_tab[i & 0xff] << 8;
		src[i] = x;
	}
}


static const uint8_t theglad_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x30, 0x35, 0x52, 0x44, 0x31, 0x30, 0x32, 0x31, 0x32, 0x30, 0x33,
	0xC4, 0xA3, 0x46, 0x78, 0x30, 0xB3, 0x8B, 0xD5, 0x2F, 0xC4, 0x44, 0xBF, 0xDB, 0x76, 0xDB, 0xEA,
	0xB4, 0xEB, 0x95, 0x4D, 0x15, 0x21, 0x99, 0xA1, 0xD7, 0x8C, 0x40, 0x1D, 0x43, 0xF3, 0x9F, 0x71,
	0x3D, 0x8C, 0x52, 0x01, 0xAF, 0x5B, 0x8B, 0x63, 0x34, 0xC8, 0x5C, 0x1B, 0x06, 0x7F, 0x41, 0x96,
	0x2A, 0x8D, 0xF1, 0x64, 0xDA, 0xB8, 0x67, 0xBA, 0x33, 0x1F, 0x2B, 0x28, 0x20, 0x13, 0xE6, 0x96,
	0x86, 0x34, 0x25, 0x85, 0xB0, 0xD0, 0x6D, 0x85, 0xFE, 0x78, 0x81, 0xF1, 0xCA, 0xE4, 0xEF, 0xF2,
	0x9B, 0x09, 0xE1, 0xB4, 0x8D, 0x79, 0x22, 0xE2, 0x00, 0xFB, 0x6F, 0x68, 0x80, 0x6A, 0x00, 0x69,
	0xF5, 0xD3, 0x57, 0x7E, 0x0C, 0xCA, 0x48, 0x31, 0xE5, 0x0D, 0x4A, 0xB9, 0xFD, 0x5C, 0xFD, 0xF8,
	0x5F, 0x98, 0xFB, 0xB3, 0x07, 0x1A, 0xE3, 0x10, 0x96, 0x56, 0xA3, 0x56, 0x3D, 0xB1, 0x07, 0xE0,
	0xE3, 0x9F, 0x7F, 0x62, 0x99, 0x01, 0x35, 0x60, 0x40, 0xBE, 0x4F, 0xEB, 0x79, 0xA0, 0x82, 0x9F,
	0xCD, 0x71, 0xD8, 0xDA, 0x1E, 0x56, 0xC2, 0x3E, 0x4E, 0x6B, 0x60, 0x69, 0x2D, 0x9F, 0x10, 0xF4,
	0xA9, 0xD3, 0x36, 0xAA, 0x31, 0x2E, 0x4C, 0x0A, 0x69, 0xC3, 0x2A, 0xFF, 0x15, 0x67, 0x96, 0xDE,
	0x3F, 0xCC, 0x0F, 0xA1, 0xAC, 0xE2, 0xD6, 0x62, 0x7E, 0x6F, 0x3E, 0x1B, 0x2A, 0xED, 0x36, 0x9C,
	0x9D, 0xA4, 0x14, 0xCD, 0xAA, 0x08, 0xA4, 0x26, 0xB7, 0x55, 0x70, 0x6C, 0xA9, 0x69, 0x52, 0xAE,
	0x0C, 0xE1, 0x38, 0x7F, 0x87, 0x78, 0x38, 0x75, 0x80, 0x9C, 0xD4, 0xE2, 0x0B, 0x52, 0x8F, 0xD2,
	0x19, 0x4C, 0xB0, 0x45, 0xDE, 0x48, 0x55, 0xAE, 0x82, 0xAB, 0xBC, 0xAB, 0x0C, 0x5E, 0xCE, 0x07,
};

void pgm_theglad_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2
		IGS27_CRYPT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= theglad_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t oldsplus_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x31, 0x33, 0x52, 0x44, 0x31, 0x30, 0x34, 0x30, 0x37, 0x32, 0x37,
	0xF5, 0x79, 0x6D, 0xAB, 0x04, 0x22, 0x51, 0x96, 0xF2, 0x72, 0xE8, 0x3A, 0x96, 0xD2, 0x9A, 0xCC,
	0x3F, 0x47, 0x3C, 0x09, 0xF2, 0xD9, 0x72, 0x41, 0xE6, 0x44, 0x43, 0xA7, 0x3E, 0xE2, 0xFD, 0xD8,
	0x06, 0xD8, 0x4C, 0xA9, 0x70, 0x80, 0x95, 0x35, 0x50, 0x17, 0x99, 0x27, 0xD5, 0xA8, 0x47, 0x45,
	0x89, 0x38, 0xE1, 0x3D, 0x8C, 0x33, 0x53, 0xB4, 0x0D, 0x17, 0xD1, 0x8D, 0x09, 0x5F, 0xAF, 0x76,
	0x48, 0xB2, 0x85, 0xB9, 0x95, 0x4C, 0x83, 0x42, 0x3D, 0xAD, 0x11, 0xEC, 0xCA, 0x82, 0xAC, 0x10,
	0x01, 0xD0, 0xFD, 0x50, 0x19, 0x67, 0x3B, 0xA0, 0x3E, 0x86, 0xC2, 0x97, 0x46, 0xCB, 0xF4, 0xF5,
	0xB3, 0x5F, 0x50, 0x74, 0xE9, 0x5F, 0xD2, 0xD4, 0xB0, 0x8D, 0x8A, 0x21, 0xED, 0x37, 0x80, 0x47,
	0x9D, 0x68, 0xC7, 0xD9, 0x12, 0x4E, 0xDF, 0x1E, 0x72, 0xEB, 0x50, 0x5E, 0x6D, 0x00, 0x85, 0x6B,
	0x3E, 0x37, 0xE6, 0x72, 0xE5, 0x8F, 0x3A, 0x03, 0xA3, 0x0D, 0x3B, 0x5F, 0xB6, 0xA1, 0x7B, 0x02,
	0x56, 0x56, 0x77, 0x71, 0xEF, 0xBE, 0xF9, 0x46, 0xA1, 0x9D, 0xB3, 0x79, 0xF6, 0xD5, 0x19, 0xF0,
	0xE2, 0x91, 0x7E, 0x4A, 0x01, 0xB6, 0x73, 0xE8, 0x0C, 0x86, 0x5D, 0x3E, 0x9C, 0x97, 0x55, 0x58,
	0x23, 0xF4, 0x45, 0xB0, 0x28, 0x91, 0x40, 0x2F, 0xC2, 0xF4, 0x21, 0x81, 0x58, 0x22, 0x68, 0x9D,
	0x97, 0xC7, 0x51, 0x95, 0xB4, 0xAA, 0x36, 0x9B, 0xE4, 0x51, 0x27, 0x55, 0x18, 0xF0, 0xC7, 0x62,
	0xFE, 0x98, 0x6A, 0x2D, 0x35, 0x9D, 0x6C, 0xF1, 0xCF, 0x48, 0xD4, 0x0D, 0x0C, 0xBE, 0x2A, 0x8A,
	0x55, 0x31, 0x96, 0xEA, 0x78, 0x45, 0x3A, 0x33, 0x23, 0xC5, 0xD1, 0x3C, 0xA3, 0x86, 0x88, 0x38,
};

void pgm_oldsplus_decrypt(running_machine &machine)
{
	int i;
	unsigned short *src = (unsigned short *)(machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++) {
		unsigned short x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5_ALT
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= oldsplus_tab[i & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t kovshp_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x30, 0x39, 0x72, 0x64, 0x31, 0x30, 0x34, 0x30, 0x32, 0x31, 0x39,
	0xF9, 0x8C, 0xBD, 0x87, 0x16, 0x07, 0x39, 0xEB, 0x29, 0x9E, 0x17, 0xEF, 0x4F, 0x64, 0x7C, 0xE0,
	0x5F, 0x73, 0x5B, 0xA1, 0x5E, 0x95, 0x0D, 0xF1, 0x40, 0x36, 0x2F, 0x00, 0xE2, 0x8A, 0xBC, 0x32,
	0x44, 0xFA, 0x6C, 0x33, 0x0B, 0xD5, 0x4C, 0x3B, 0x36, 0x34, 0x9E, 0xA3, 0x20, 0x2E, 0xF3, 0xA9,
	0xB7, 0x3E, 0x87, 0x80, 0xFB, 0xF1, 0xDD, 0x9C, 0xBA, 0xD3, 0x9B, 0x3B, 0x8A, 0x9C, 0xA8, 0x37,
	0x07, 0x97, 0x84, 0x0C, 0x4E, 0x54, 0xE7, 0x25, 0xBA, 0x8E, 0x9D, 0x6B, 0xDE, 0x5F, 0xA1, 0x10,
	0xC3, 0xA2, 0x79, 0x99, 0x63, 0xA9, 0xD1, 0x2A, 0x65, 0x20, 0x5B, 0x16, 0x1B, 0x41, 0xE6, 0xA7,
	0xBA, 0x3A, 0xBD, 0x2A, 0xD8, 0xDB, 0x43, 0x3F, 0x2B, 0x85, 0xCC, 0x5F, 0x80, 0x4F, 0xBE, 0xAE,
	0xFA, 0x79, 0xE8, 0x03, 0x8D, 0x16, 0x22, 0x35, 0xBB, 0xF6, 0x26, 0xA9, 0x8D, 0xD2, 0xAF, 0x19,
	0xD4, 0xBB, 0xD0, 0xA6, 0xA1, 0xC4, 0x96, 0x21, 0x02, 0xEF, 0xE1, 0x96, 0x00, 0x56, 0x80, 0x1B,
	0xD6, 0x9A, 0x8C, 0xD7, 0x73, 0x91, 0x07, 0x55, 0x32, 0x2B, 0xB5, 0x0B, 0xD8, 0xA5, 0x39, 0x26,
	0xCE, 0xF2, 0x74, 0x98, 0xA1, 0x66, 0x1A, 0x64, 0xB8, 0xA5, 0x96, 0x29, 0x54, 0xCB, 0x21, 0xED,
	0xCD, 0xDD, 0x1E, 0x2C, 0x0B, 0x70, 0xB8, 0x22, 0x43, 0x98, 0xBE, 0x54, 0xF3, 0x14, 0xBE, 0x65,
	0x21, 0xB7, 0x61, 0x17, 0xCF, 0x19, 0x07, 0xA0, 0xC2, 0x7F, 0xA3, 0x30, 0x75, 0x08, 0xD8, 0xBF,
	0x58, 0x1A, 0x55, 0x1B, 0x4E, 0x0D, 0x6D, 0x32, 0x65, 0x15, 0xFB, 0x9E, 0xD8, 0x75, 0x76, 0x6F,
	0x42, 0xE2, 0x4F, 0x3C, 0x25, 0x35, 0x93, 0x6C, 0x9B, 0x56, 0xBE, 0xC1, 0x5B, 0x65, 0xDE, 0x27,
};

void pgm_kovshp_decrypt(running_machine &machine)
{
	int i;
	unsigned short *src = (unsigned short *)(machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++) {
		unsigned short x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2_ALT2
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= kovshp_tab[i & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t killbldp_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x32, 0x34, 0x52, 0x44, 0x31, 0x30, 0x35, 0x30, 0x39, 0x30, 0x38,
	0x12, 0xA0, 0xD1, 0x9E, 0xB1, 0x8A, 0xFB, 0x1F, 0x50, 0x51, 0x4B, 0x81, 0x28, 0xDA, 0x5F, 0x41,
	0x78, 0x6C, 0x7A, 0xF0, 0xCD, 0x6B, 0x69, 0x14, 0x94, 0x55, 0xB6, 0x42, 0xDF, 0xFE, 0x10, 0x79,
	0x74, 0x08, 0xFA, 0xC0, 0x1C, 0xA5, 0xB4, 0x03, 0x2A, 0x91, 0x67, 0x2B, 0x49, 0x4A, 0x94, 0x7D,
	0x8B, 0x92, 0xBE, 0x35, 0xAF, 0x28, 0x56, 0x63, 0xB3, 0xC2, 0xE8, 0x06, 0x9B, 0x4E, 0x85, 0x66,
	0x7F, 0x6B, 0x70, 0xB7, 0xDB, 0x22, 0x0C, 0xEB, 0x13, 0xE9, 0x06, 0xD7, 0x45, 0xDA, 0xBE, 0x8B,
	0x54, 0x30, 0xFC, 0xEB, 0x32, 0x02, 0xD0, 0x92, 0x6D, 0x44, 0xCA, 0xE8, 0xFD, 0xFB, 0x5B, 0x81,
	0x4C, 0xC0, 0x8B, 0xB9, 0x87, 0x78, 0xDD, 0x8E, 0x24, 0x52, 0x80, 0xBE, 0xB4, 0x01, 0xB7, 0x21,
	0xEB, 0x3C, 0x8A, 0x49, 0xED, 0x73, 0xAE, 0x58, 0xDB, 0xD2, 0xB2, 0x21, 0x9E, 0x7C, 0x6C, 0x82,
	0xF3, 0x01, 0xA3, 0x00, 0xB7, 0x21, 0xFE, 0xA5, 0x75, 0xC4, 0x2D, 0x17, 0x2D, 0x39, 0x56, 0xF9,
	0x67, 0xAE, 0xC2, 0x87, 0x79, 0xF1, 0xC8, 0x6D, 0x15, 0x66, 0xFA, 0xE8, 0x16, 0x48, 0x8F, 0x1F,
	0x8B, 0x24, 0x10, 0xC4, 0x04, 0x93, 0x47, 0xE6, 0x1D, 0x37, 0x65, 0x1A, 0x49, 0xF8, 0x72, 0xCB,
	0xE1, 0x80, 0xFA, 0xDD, 0x6D, 0xF5, 0xF6, 0x89, 0x32, 0xF6, 0xF8, 0x75, 0xFC, 0xD8, 0x9B, 0x12,
	0x2D, 0x22, 0x2A, 0x3B, 0x06, 0x46, 0x90, 0x0C, 0x35, 0xA2, 0x80, 0xFF, 0xA0, 0xB7, 0xE5, 0x4D,
	0x71, 0xA9, 0x8C, 0x84, 0x62, 0xF7, 0x10, 0x65, 0x4A, 0x7B, 0x06, 0x00, 0xE8, 0xA4, 0x6A, 0x13,
	0xF0, 0xF3, 0x4A, 0x9F, 0x54, 0xB4, 0xB1, 0xCC, 0xD4, 0xFF, 0xD6, 0xFF, 0xC9, 0xEE, 0x86, 0x39,
};

void pgm_killbldp_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2
		IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= killbldp_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}


void pgm_svg_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x800000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5_ALT
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		src[i] = x;
	}
}

static const unsigned char svgpcb_tab[0x100] = {
		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_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());

	int rom_size = 0x800000;

	for (i = 0; i < rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT; // ok?
		IGS27_CRYPT2 // ok?
		IGS27_CRYPT3
		IGS27_CRYPT4 // ok?
		IGS27_CRYPT5  // ok?
		IGS27_CRYPT6_ALT // ok?
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= svgpcb_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t 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,
	0x44, 0x72, 0x0c, 0x7e, 0x4d, 0x41, 0x77, 0x2d, 0x00, 0xad, 0x1a, 0x5f, 0x6b, 0xc0, 0x1d, 0x4e,
	0x4c, 0x72, 0x62, 0x3c, 0x32, 0x28, 0x43, 0xf8, 0x9d, 0x52, 0x05, 0x7e, 0xd1, 0xee, 0x82, 0x61,
	0x3b, 0x3f, 0x77, 0xf3, 0x8f, 0x7e, 0x3f, 0xf1, 0xdf, 0x8f, 0x68, 0x43, 0xd7, 0x68, 0xdf, 0x19,
	0x87, 0xff, 0x74, 0xe5, 0x3f, 0x43, 0x8e, 0x80, 0x0f, 0x7e, 0xdb, 0x32, 0xe8, 0xd1, 0x66, 0x8f,
	0xbe, 0xe2, 0x33, 0x94, 0xc8, 0x32, 0x39, 0xfa, 0xf0, 0x43, 0xde, 0x84, 0x18, 0xd0, 0x6d, 0xd5,
	0x74, 0x98, 0xf8, 0x64, 0xcf, 0x84, 0xc6, 0xea, 0x55, 0x32, 0xe2, 0x38, 0xdd, 0xea, 0xfd, 0x6c,
	0xeb, 0x6e, 0xe3, 0x70, 0xae, 0x38, 0xc7, 0xd9, 0x54, 0x84, 0x10, 0xc1, 0xfd, 0x1e, 0x6e, 0x6d,
	0x37, 0xe0, 0x03, 0x9e, 0x06, 0x36, 0x68, 0x5b, 0xe3, 0xf6, 0x7f, 0x0b, 0x56, 0x79, 0xe0, 0xa8,
	0x98, 0x77, 0xc7, 0x2b, 0xa5, 0x79, 0xff, 0x2f, 0xca, 0x15, 0x71, 0x7e, 0x02, 0xbf, 0x87, 0xb7,
	0x7a, 0x8e, 0xe6, 0x64, 0x32, 0x62, 0x2a, 0xca, 0x23, 0x72, 0x87, 0xb5, 0x0c, 0x02, 0x4b, 0xee,
	0x44, 0x72, 0x9c, 0x7e, 0x5d, 0xc1, 0xa7, 0x1d, 0x30, 0x38, 0xda, 0xc9, 0x5b, 0xd0, 0x11, 0xf9,
	0xb1, 0x72, 0x6c, 0x04, 0x31, 0xc9, 0x50, 0x60, 0x6f, 0xc1, 0xf2, 0xae, 0x00, 0xf4, 0x5d, 0x66,
	0x43, 0x0e, 0x7a, 0xc3, 0x76, 0xae, 0x3c, 0xc2, 0xb7, 0xc9, 0x52, 0xf4, 0x74, 0x51, 0xaf, 0x12,
	0x19, 0xc6, 0x75, 0xe8, 0x6c, 0x54, 0x7e, 0x63, 0xdd, 0xae, 0x07, 0x5a, 0xb7, 0x00, 0xb5, 0x5e
};

void pgm_py2k2_decrypt(running_machine &machine) // and ddpdoj/ddpdojbl
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT3
		IGS27_CRYPT3_ALT
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= py2k2_tab[i & 0xff] << 8;

		src[i] = x;
	}
}


static const unsigned char ket_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x30, 0x34, 0x52, 0x44, 0x31, 0x30, 0x32, 0x31, 0x30, 0x31, 0x35,
	0x7c, 0x49, 0x27, 0xa5, 0xff, 0xf6, 0x98, 0x2d, 0x0f, 0x3d, 0x12, 0x23, 0xe2, 0x30, 0x50, 0xcf,
	0xf1, 0x82, 0xf0, 0xce, 0x48, 0x44, 0x5b, 0xf3, 0x0d, 0xdf, 0xf8, 0x5d, 0x50, 0x53, 0x91, 0xd9,
	0x12, 0xaf, 0x05, 0x7a, 0x98, 0xd0, 0x2f, 0x76, 0xf1, 0x5d, 0x17, 0x44, 0xc5, 0x03, 0x58, 0xf4,
	0x61, 0xee, 0xd1, 0xce, 0x00, 0x88, 0x90, 0x2e, 0x5c, 0x76, 0xfb, 0x9f, 0x75, 0xcf, 0x40, 0x37,
	0xa1, 0x9f, 0x00, 0x32, 0xd5, 0x9c, 0x37, 0xd2, 0x32, 0x27, 0x6f, 0x76, 0xd3, 0x86, 0x25, 0xf9,
	0xd6, 0x60, 0x7b, 0x4e, 0xa9, 0x7a, 0x20, 0x59, 0x96, 0xb1, 0x7d, 0x10, 0x92, 0x37, 0x22, 0xd2,
	0x42, 0x12, 0x6f, 0x07, 0x4f, 0xd2, 0x87, 0xfa, 0xeb, 0x92, 0x71, 0xf3, 0xa4, 0x31, 0x91, 0x98,
	0x68, 0xd2, 0x47, 0x86, 0xda, 0x92, 0xe5, 0x2b, 0xd4, 0x89, 0xd7, 0xe7, 0x3d, 0x03, 0x0d, 0x63,
	0x0c, 0x00, 0xac, 0x31, 0x9d, 0xe9, 0xf6, 0xa5, 0x34, 0x95, 0x77, 0xf2, 0xcf, 0x7c, 0x72, 0x89,
	0x31, 0x3a, 0x8b, 0xae, 0x2b, 0x47, 0xb6, 0x5d, 0x2d, 0xf5, 0x5f, 0x5c, 0x0e, 0xab, 0xdb, 0xa1,
	0x18, 0x60, 0x0e, 0xe6, 0x58, 0x5b, 0x5e, 0x8b, 0x24, 0x29, 0xd8, 0xac, 0xed, 0xdf, 0xa2, 0x83,
	0x46, 0x91, 0xa1, 0xff, 0x35, 0x13, 0x6a, 0xa5, 0xba, 0xef, 0x6e, 0xa8, 0x9e, 0xa6, 0x62, 0x44,
	0x7e, 0x2c, 0xed, 0x60, 0x17, 0x9e, 0x96, 0x64, 0xd3, 0x46, 0xec, 0x58, 0x95, 0xd1, 0xf7, 0x3e,
	0xc2, 0xcf, 0xdf, 0xb0, 0x90, 0x6c, 0xdb, 0xbe, 0x93, 0x6d, 0x5d, 0x02, 0x85, 0x6e, 0x7c, 0x05,
	0x55, 0x5a, 0xa1, 0xd7, 0x73, 0x2b, 0x76, 0xe9, 0x5b, 0xe4, 0x0c, 0x2e, 0x60, 0xcb, 0x4b, 0x72
};

void pgm_ket_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base());

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3_ALT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT


		x ^= ket_tab[i & 0xff] << 8;

		src[i] = x;
	}
}

static const unsigned char espgal_tab[256] = {
		0x49, 0x47, 0x53, 0x30, 0x30, 0x30, 0x37, 0x52, 0x44, 0x31, 0x30, 0x33, 0x30, 0x39, 0x30, 0x39,
		0xa7, 0xf1, 0x0a, 0xca, 0x69, 0xb2, 0xce, 0x86, 0xec, 0x3d, 0xa2, 0x5a, 0x03, 0xe9, 0xbf, 0xba,
		0xf7, 0xd5, 0xec, 0x68, 0x03, 0x90, 0x15, 0xcc, 0x0d, 0x08, 0x2d, 0x76, 0xa5, 0xb5, 0x41, 0xf1,
		0x43, 0x06, 0xdd, 0xcb, 0xbd, 0x0c, 0xa4, 0xe2, 0x08, 0x65, 0x2a, 0xf0, 0x30, 0x6b, 0x15, 0x59,
		0x99, 0x9e, 0x75, 0x35, 0x77, 0x4f, 0x60, 0x99, 0x8c, 0x8f, 0xd2, 0x2b, 0x21, 0x57, 0xc3, 0xe5,
		0x48, 0xf9, 0x8a, 0x29, 0x50, 0xc6, 0x71, 0x06, 0x89, 0x01, 0x9a, 0xc9, 0x39, 0x04, 0x12, 0xc8,
		0xdf, 0xb1, 0x33, 0x6b, 0xa7, 0x1c, 0x3f, 0x7b, 0x2d, 0x76, 0x3a, 0xaf, 0x76, 0x3d, 0x08, 0x74,
		0x2c, 0xa2, 0xc8, 0xfd, 0x1a, 0x3a, 0x6f, 0x8b, 0xe8, 0xe9, 0xa9, 0xfe, 0x17, 0x0c, 0xed, 0x9d,
		0x40, 0xe6, 0xdf, 0x22, 0x89, 0x4d, 0xea, 0x09, 0x68, 0x96, 0x1e, 0x1a, 0x9c, 0xbd, 0x47, 0x35,
		0x68, 0xd9, 0x4f, 0x5e, 0x12, 0xbf, 0xd6, 0x09, 0x9d, 0xf6, 0x0f, 0xa7, 0xc2, 0xdb, 0xde, 0x70,
		0x35, 0x15, 0x2f, 0x73, 0x16, 0x3c, 0x9a, 0xdc, 0xb5, 0xc5, 0x35, 0x86, 0x8a, 0x31, 0xb8, 0xc1,
		0x74, 0x76, 0xd7, 0x65, 0x32, 0xad, 0xdc, 0x17, 0x1f, 0xfe, 0x85, 0xda, 0x32, 0xc9, 0x1d, 0xda,
		0x36, 0x16, 0xde, 0x76, 0x45, 0x3f, 0x85, 0x8c, 0x8b, 0xdc, 0x37, 0x08, 0x39, 0xef, 0x94, 0xaf,
		0xc8, 0x51, 0x19, 0x29, 0x70, 0x5d, 0xbb, 0x4e, 0xe8, 0xdb, 0xc2, 0xb2, 0x5f, 0x2e, 0xe3, 0x73,
		0xba, 0xc2, 0xa1, 0x42, 0x10, 0xb0, 0xe5, 0xb0, 0x64, 0xb4, 0xdc, 0xbb, 0xa1, 0x51, 0x12, 0x98,
		0xdc, 0x43, 0xcc, 0xc3, 0xc5, 0x25, 0xab, 0x45, 0x6e, 0x63, 0x7e, 0x45, 0x40, 0x63, 0x67, 0xd2
};

void pgm_espgal_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base());

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT3
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5_ALT
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= espgal_tab[i & 0xff] << 8;

		src[i] = x;
	}
}



static const uint8_t happy6in1_tab[256] = { // IGS0008RD1031215
	0x49, 0x47, 0x53, 0x30, 0x30, 0x30, 0x38, 0x52, 0x44, 0x31, 0x30, 0x33, 0x31, 0x32, 0x31, 0x35,
	0x14, 0xd6, 0x37, 0x5c, 0x5e, 0xc3, 0xd3, 0x62, 0x96, 0x3d, 0xfb, 0x47, 0xf0, 0xcb, 0xbf, 0xb0,
	0x60, 0xa1, 0xc2, 0x3d, 0x90, 0xd0, 0x58, 0x56, 0x22, 0xac, 0xdd, 0x39, 0x27, 0x7e, 0x58, 0x44,
	0xe0, 0x6b, 0x51, 0x80, 0xb4, 0xa4, 0xf0, 0x6f, 0x71, 0xd0, 0x57, 0x18, 0xc7, 0xb6, 0x41, 0x50,
	0x02, 0x2f, 0xdb, 0x4a, 0x08, 0x4b, 0xe3, 0x62, 0x92, 0xc3, 0xff, 0x26, 0xaf, 0x9f, 0x60, 0xa5,
	0x76, 0x28, 0x97, 0xfd, 0x0b, 0x10, 0xb7, 0x1f, 0xd5, 0xe0, 0xac, 0xe6, 0xfd, 0xa3, 0xdb, 0x58,
	0x2a, 0xd1, 0xfc, 0x3b, 0x7c, 0x7e, 0x34, 0xdc, 0xc7, 0xc4, 0x76, 0x1b, 0x11, 0x6d, 0x1b, 0xbb,
	0x4e, 0xe5, 0xc0, 0xe8, 0x5a, 0x60, 0x60, 0x0a, 0x38, 0x47, 0xb3, 0xc9, 0x89, 0xe9, 0xc6, 0x61,
	0x50, 0x5f, 0xdb, 0x28, 0xe5, 0xc0, 0x83, 0x5c, 0x37, 0x86, 0xfa, 0x32, 0x46, 0x40, 0xc3, 0x1d,
	0xdf, 0x7a, 0x85, 0x5c, 0x9a, 0xea, 0x24, 0xc7, 0x12, 0xdc, 0x23, 0xda, 0x65, 0xdf, 0x39, 0x02,
	0xeb, 0xb1, 0x32, 0x28, 0x3a, 0x69, 0x09, 0x7c, 0x5a, 0xe3, 0x44, 0x83, 0x45, 0x71, 0x8f, 0x64,
	0xa3, 0xbf, 0x9c, 0x6f, 0xc4, 0x07, 0x3a, 0xee, 0xdd, 0x77, 0xb4, 0x31, 0x87, 0xdf, 0x6d, 0xd4,
	0x75, 0x9f, 0xb9, 0x53, 0x75, 0xd0, 0xfe, 0xd1, 0xaa, 0xb2, 0x0b, 0x25, 0x08, 0x56, 0xb8, 0x27,
	0x10, 0x8c, 0xbf, 0x39, 0xce, 0x0f, 0xdb, 0x18, 0x10, 0xf0, 0x1f, 0xe5, 0xe8, 0x40, 0x98, 0x6f,
	0x64, 0x02, 0x27, 0xc3, 0x8c, 0x4f, 0x98, 0xf6, 0x9d, 0xcb, 0x07, 0x31, 0x85, 0x48, 0x75, 0xff,
	0x9f, 0xba, 0xa6, 0xd3, 0xb0, 0x5b, 0x3d, 0xdd, 0x22, 0x1f, 0x1b, 0x0e, 0x7f, 0x5a, 0xf4, 0x6a
};

void pgm_happy6_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("user1")->base());

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2
		IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5_ALT
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= happy6in1_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t sdwx_tab[] =
{
	0x49,0x47,0x53,0x30,0x30,0x35,0x35,0x52,0x44,0x34,0x30,0x32,0x30,0x36,0x32,0x31,
	0x8A,0xBB,0x20,0x67,0x97,0xA5,0x20,0x45,0x6B,0xC0,0xE8,0x0C,0x80,0xFB,0x49,0xAA,
	0x1E,0xAC,0x29,0xF2,0xB9,0x9F,0x01,0x4A,0x8D,0x5F,0x95,0x96,0x78,0xC3,0xF6,0x65,
	0x17,0xBD,0xB6,0x5B,0x25,0x5F,0x6B,0xDE,0x10,0x2E,0x67,0x05,0xDC,0xAC,0xB6,0xBD,
	0x3D,0x20,0x58,0x3D,0xF0,0xA8,0xC0,0xAD,0x5B,0x82,0x8D,0x12,0x65,0x97,0x87,0x7D,
	0x97,0x49,0xDD,0x74,0x74,0x7E,0x9D,0xA1,0x15,0xED,0x75,0xB9,0x09,0xA8,0xA8,0xB0,
	0x6B,0xEA,0x54,0x1B,0x45,0x23,0xE2,0xE5,0x25,0x42,0xCE,0x36,0xFE,0x42,0x99,0xA0,
	0x41,0xF8,0x0B,0x8C,0x3C,0x1B,0xAE,0xE4,0xB2,0x94,0x87,0x02,0xBC,0x08,0x17,0xD9,
	0xE0,0xA4,0x93,0x63,0x6F,0x28,0x5F,0x4A,0x24,0x36,0xD1,0xDA,0xFA,0xDD,0x23,0x26,
	0x4E,0x61,0xB9,0x7A,0x36,0x4D,0x95,0x01,0x20,0xBC,0x18,0xB7,0xAF,0xE4,0xFB,0x92,
	0xD2,0xE3,0x8E,0xEC,0x26,0xCE,0x2F,0x34,0x8F,0xF7,0x0D,0xD6,0x11,0x7F,0x1F,0x68,
	0xF4,0x1D,0x5F,0x16,0x19,0x2D,0x4C,0x4F,0x96,0xFC,0x9F,0xB0,0x99,0x53,0x4C,0x32,
	0x7B,0x41,0xBC,0x90,0x23,0x2E,0x4A,0xFC,0x9E,0x1D,0xFC,0x02,0xFC,0x41,0x83,0xBC,
	0x6D,0xC4,0x75,0x37,0x9D,0xD3,0xC9,0x26,0x4D,0xED,0x93,0xC6,0x32,0x6D,0x02,0x11,
	0x12,0x56,0x97,0x26,0x1D,0x5F,0xA7,0xF8,0x89,0x3F,0x14,0x36,0x72,0x3B,0x48,0x7B,
	0xF1,0xED,0x72,0xB7,0x7A,0x56,0x05,0xDE,0x7B,0x27,0x6D,0xCF,0x33,0x4C,0x14,0x86,
};


void sdwx_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT2
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= sdwx_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t hauntedh_tab[0x100] = {
	0x49, 0x47, 0x53, 0x30, 0x32, 0x35, 0x34, 0x52, 0x44, 0x34, 0x30, 0x36, 0x30, 0x35, 0x32, 0x36,
	0x6C, 0x65, 0x33, 0xFD, 0x7A, 0x71, 0x3D, 0xB8, 0x07, 0xF1, 0x86, 0x96, 0x19, 0x5A, 0xA2, 0x05,
	0x49, 0xB1, 0xED, 0x2E, 0x7C, 0x7A, 0x65, 0x8B, 0xE1, 0xE3, 0xC8, 0xAA, 0x2B, 0x32, 0xEE, 0x3F,
	0x10, 0x6C, 0x69, 0x70, 0x02, 0x47, 0x5B, 0x5D, 0x2D, 0x52, 0x97, 0xEF, 0xB1, 0x63, 0xFB, 0xE3,
	0x21, 0x41, 0x0C, 0x17, 0x3C, 0x93, 0xD4, 0x13, 0xEB, 0x08, 0xF9, 0xDB, 0x7A, 0xC8, 0x1E, 0xF4,
	0x1B, 0x1B, 0x7F, 0xB4, 0x98, 0x59, 0xC8, 0xCF, 0x58, 0x12, 0x36, 0x1F, 0x96, 0x7D, 0xF0, 0xB3,
	0xDC, 0x26, 0xA8, 0x1C, 0xC6, 0xD4, 0x6E, 0xF3, 0xF5, 0xB9, 0xD4, 0xAF, 0x52, 0xDD, 0x48, 0xA5,
	0x85, 0xCC, 0xAD, 0x60, 0xB4, 0x7F, 0x3C, 0x24, 0x80, 0x88, 0x9B, 0xBD, 0x3E, 0x82, 0x3B, 0x8D,
	0x73, 0xB8, 0xF7, 0xD5, 0x92, 0x15, 0xeb, 0x43, 0xF9, 0x4C, 0x91, 0xBD, 0x29, 0x48, 0x22, 0x6D,
	0x45, 0xD6, 0x2C, 0x0D, 0xCE, 0x91, 0x70, 0x74, 0x9D, 0x0E, 0xFE, 0x62, 0x22, 0x49, 0x94, 0x88,
	0xDB, 0x50, 0x33, 0xDB, 0x18, 0x2E, 0x03, 0x1B, 0xED, 0x1A, 0x69, 0x9E, 0x78, 0xE1, 0x66, 0x62,
	0x54, 0x91, 0x33, 0x52, 0x5E, 0x67, 0x1B, 0xD9, 0xA7, 0xFB, 0x98, 0xA5, 0xBA, 0xAA, 0xB1, 0xBD,
	0x0F, 0x44, 0x93, 0xC6, 0xCF, 0xF7, 0x6F, 0x91, 0xCA, 0x7B, 0x93, 0xEA, 0xB6, 0x7F, 0xCC, 0x9C,
	0xAB, 0x54, 0xFB, 0xC8, 0xDB, 0xD9, 0xF5, 0x68, 0x96, 0xA7, 0xA1, 0x1F, 0x7D, 0x7D, 0x4C, 0x43,
	0x06, 0xED, 0x50, 0x2D, 0x30, 0x48, 0xE6, 0xC0, 0x88, 0xC8, 0x48, 0x38, 0x5D, 0xFC, 0x0a, 0x35,
	0x3F, 0x79, 0xBA, 0x07, 0xBE, 0xBF, 0xB7, 0x3B, 0x61, 0x69, 0x4F, 0x67, 0xE5, 0x9A, 0x1D, 0x33
};

void hauntedh_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x080000;

	for(i=0; i<rom_size/2; i++) {
			uint16_t x = src[i];

		IGS27_CRYPT1
	//  IGS27_CRYPT2
	//  IGS27_CRYPT3
		IGS27_CRYPT4_ALT
	//  IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7_ALT
		IGS27_CRYPT8

		x ^= hauntedh_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t chessc2_tab[0x100] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x38, 0x32, 0x52, 0x44, 0x34, 0x30, 0x32, 0x31, 0x32, 0x31, 0x31,
	0x28, 0xCA, 0x9C, 0xAD, 0xBB, 0x2D, 0xF0, 0x41, 0x6E, 0xCE, 0xAD, 0x73, 0xAE, 0x1C, 0xD1, 0x14,
	0x6F, 0x9A, 0x75, 0x18, 0xA8, 0x91, 0x68, 0xe4, 0x09, 0xF4, 0x0F, 0xD7, 0xFF, 0x93, 0x7D, 0x1B,
	0xEB, 0x84, 0xce, 0xAD, 0x9E, 0xCF, 0xC9, 0xAB, 0x18, 0x59, 0xb6, 0xde, 0x82, 0x13, 0x7C, 0x88,
	0x69, 0x63, 0xFF, 0x6F, 0x3C, 0xD2, 0xB9, 0x29, 0x09, 0xF8, 0x97, 0xAA, 0x74, 0xA5, 0x16, 0x0D,
	0xF9, 0x51, 0x9E, 0x9f, 0x63, 0xC6, 0x1E, 0x32, 0x8C, 0x0C, 0xE9, 0xA0, 0x56, 0x95, 0xD1, 0x9D,
	0xEA, 0xA9, 0x82, 0xC3, 0x30, 0x15, 0x21, 0xD8, 0x8F, 0x10, 0x25, 0x61, 0xE6, 0x6D, 0x75, 0x6D,
	0xCB, 0x08, 0xC3, 0x9B, 0x03, 0x6A, 0x28, 0x6D, 0x42, 0xBF, 0x00, 0xd2, 0x24, 0xFA, 0x08, 0xEE,
	0x6B, 0x46, 0xB7, 0x2C, 0x7B, 0xB0, 0xDA, 0x86, 0x13, 0x14, 0x73, 0x14, 0x4D, 0x45, 0xD3, 0xD4,
	0xD9, 0x80, 0xF5, 0xB8, 0x76, 0x13, 0x1E, 0xF6, 0xB1, 0x4A, 0xB3, 0x8B, 0xE2, 0x9A, 0x5A, 0x11,
	0x64, 0x11, 0x55, 0xC3, 0x14, 0xFD, 0x1B, 0xCe, 0x0C, 0xDC, 0x38, 0xDA, 0xA1, 0x84, 0x66, 0xD9,
	0x9b, 0x93, 0xED, 0x0F, 0xB4, 0x19, 0x38, 0x62, 0x53, 0x85, 0xB9, 0xE5, 0x89, 0xCd, 0xFE, 0x9E,
	0x4D, 0xE2, 0x14, 0x9F, 0xF4, 0x53, 0x1C, 0x46, 0xf4, 0x40, 0x2C, 0xCC, 0xDa, 0x82, 0x69, 0x15,
	0x88, 0x18, 0x62, 0xB7, 0xB4, 0xD5, 0xAF, 0x4B, 0x9E, 0x48, 0xCA, 0xF4, 0x11, 0xEC, 0x2D, 0x2C,
	0x9D, 0x91, 0xAD, 0xDA, 0x13, 0x0A, 0x16, 0x86, 0x41, 0x18, 0x08, 0x01, 0xef, 0x97, 0x11, 0x1f,
	0x1A, 0xE7, 0x0C, 0xC9, 0x6D, 0x9D, 0xB9, 0x49, 0x0B, 0x6B, 0x9E, 0xD4, 0x72, 0x4D, 0x1D, 0x59
};

void chessc2_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
	//  IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6 // correct??
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= chessc2_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t klxyj_tab[0x100] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x30, 0x38, 0x52, 0x44, 0x34, 0x30, 0x31, 0x30, 0x39, 0x32, 0x34,
	0x3F, 0x0F, 0x66, 0x9A, 0xBF, 0x0D, 0x06, 0x55, 0x09, 0x01, 0xEB, 0x72, 0xEB, 0x9B, 0x89, 0xFA,
	0x24, 0xD1, 0x5D, 0xCA, 0xE6, 0x8A, 0x8C, 0xE0, 0x92, 0x8D, 0xBF, 0xE4, 0xAF, 0xAA, 0x3E, 0xFA,
	0x2B, 0x27, 0x4B, 0xC7, 0xD6, 0x6D, 0xC1, 0xC2, 0x1C, 0xF4, 0xED, 0xBD, 0x03, 0x6C, 0xAD, 0xB3,
	0x65, 0x2D, 0xC7, 0xD3, 0x6E, 0xE0, 0x8C, 0xCE, 0x59, 0x6F, 0xAE, 0x5E, 0x66, 0x2B, 0x5E, 0x17,
	0x20, 0x3D, 0xA9, 0x72, 0xCD, 0x4F, 0x14, 0x17, 0x35, 0x7B, 0x77, 0x6B, 0x98, 0x73, 0x17, 0x5A,
	0xEA, 0xF2, 0x07, 0x66, 0x51, 0x64, 0xC1, 0xF0, 0xE2, 0xD1, 0x00, 0xC6, 0x97, 0x0F, 0xE0, 0xEE,
	0x94, 0x28, 0x39, 0xB2, 0x9B, 0x0A, 0x38, 0xED, 0xCC, 0x6E, 0x40, 0x94, 0xA2, 0x0A, 0x00, 0x88,
	0x2B, 0xFA, 0xD5, 0x9A, 0x87, 0x6C, 0x62, 0xDF, 0xA4, 0x8B, 0x6D, 0x37, 0x38, 0xAE, 0xFD, 0x18,
	0xFF, 0xC2, 0xB2, 0xA0, 0x37, 0xF5, 0x64, 0xDB, 0x59, 0xA5, 0x00, 0x51, 0x19, 0x88, 0x9F, 0xD4,
	0xA0, 0x1C, 0xE7, 0x88, 0x08, 0x51, 0xA7, 0x33, 0x19, 0x75, 0xAE, 0xC7, 0x42, 0x61, 0xEC, 0x2D,
	0xDB, 0xE2, 0xCC, 0x54, 0x9A, 0x6A, 0xD1, 0x7A, 0x53, 0xF8, 0x6F, 0xBA, 0xF4, 0x45, 0x2C, 0xD7,
	0xC0, 0x30, 0xF7, 0x47, 0xCC, 0x6B, 0xC8, 0x83, 0xB7, 0x67, 0x7A, 0x8E, 0xAD, 0x7E, 0xE5, 0xC4,
	0x9F, 0x60, 0x40, 0xE5, 0xBC, 0xC0, 0xB5, 0x61, 0x33, 0x3F, 0x46, 0xE6, 0x2D, 0x98, 0xDF, 0x28,
	0x05, 0x0E, 0xBC, 0xF0, 0xCA, 0x13, 0xFE, 0x68, 0xF7, 0x3A, 0x89, 0xA5, 0x71, 0x5F, 0x21, 0x76,
	0xC2, 0x14, 0xC5, 0x6C, 0x95, 0x4f, 0x4f, 0x2A, 0x71, 0x52, 0x3C, 0xEE, 0xAA, 0xDB, 0xf1, 0x00
};

void klxyj_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
	//  IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= klxyj_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t zhongguo_tab[0x100] = {
	0x68, 0x56, 0xC2, 0x54, 0xA2, 0x8C, 0x7B, 0x4F, 0x37, 0xAC, 0x60, 0xF8, 0x24, 0xDF, 0x3E, 0x6B,
	0xE2, 0x89, 0x3D, 0xF3, 0x31, 0x83, 0x4A, 0x65, 0x27, 0x98, 0xC5, 0xBF, 0x78, 0x3E, 0x6C, 0x02,
	0x07, 0x96, 0x88, 0x4D, 0xAE, 0xA6, 0x56, 0x3A, 0x4A, 0xD5, 0xB8, 0x7E, 0x0B, 0xA7, 0x1D, 0xBC,
	0xFA, 0xBA, 0xAD, 0xA9, 0xCB, 0x02, 0xBA, 0x66, 0xE5, 0x41, 0x63, 0x1A, 0xB0, 0xCA, 0x8A, 0xCF,
	0x1E, 0x76, 0xF9, 0x8F, 0x7C, 0xE7, 0xD0, 0xC0, 0x7B, 0xFC, 0x32, 0xBC, 0x7A, 0x95, 0x2F, 0xB4,
	0x16, 0x88, 0xF5, 0xC6, 0xF4, 0xE3, 0x33, 0x5D, 0xCE, 0x65, 0xCE, 0xCA, 0xBC, 0x37, 0xC8, 0x20,
	0xC5, 0xEF, 0x6D, 0x55, 0xA6, 0xC7, 0xBF, 0x96, 0xE1, 0x1A, 0x24, 0xEA, 0x09, 0x20, 0x4E, 0x0B,
	0x4D, 0xEB, 0x6B, 0x82, 0x44, 0xA1, 0x8F, 0x01, 0xF8, 0xFB, 0x5E, 0x05, 0x35, 0xFF, 0xFE, 0xAC,
	0x13, 0xF9, 0x3C, 0xD4, 0xC1, 0xC0, 0xFD, 0x76, 0x95, 0x27, 0xE7, 0x41, 0x52, 0xC1, 0x51, 0x7A,
	0xB8, 0xDA, 0x69, 0x13, 0x52, 0xB3, 0xA4, 0x0B, 0x7B, 0xFD, 0x6B, 0x05, 0xB2, 0x98, 0x04, 0x2C,
	0x20, 0x8C, 0xBE, 0x46, 0x68, 0x48, 0x60, 0x17, 0xAE, 0x1B, 0xD4, 0xF8, 0xEA, 0xF1, 0x10, 0xB8,
	0x6F, 0x4F, 0x45, 0xB3, 0xB6, 0x90, 0x4C, 0x31, 0x70, 0x61, 0x4D, 0x02, 0xCC, 0x7B, 0xB1, 0x57,
	0x06, 0xA0, 0x4B, 0xE2, 0x31, 0xD9, 0xC2, 0x31, 0x45, 0xEE, 0x42, 0x48, 0x6B, 0x26, 0x63, 0x7E,
	0x89, 0x40, 0x59, 0x9A, 0x09, 0xB1, 0x5E, 0x2D, 0xEF, 0x20, 0x5C, 0x32, 0x1B, 0x20, 0xDF, 0xE5,
	0xDA, 0x2D, 0x3B, 0xE1, 0xB4, 0xE9, 0xFA, 0x7D, 0x71, 0x97, 0x88, 0x68, 0x6D, 0xD8, 0x22, 0x82,
	0x1E, 0xA6, 0xFC, 0xFE, 0xE3, 0x8E, 0xB1, 0xB7, 0x0F, 0x32, 0xF1, 0xCF, 0x36, 0xFE, 0x65, 0x8E
};

void zhongguo_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
	//  IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= zhongguo_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t gonefsh2_tab[0x100] = {
		0x49, 0x47, 0x53, 0x30, 0x30, 0x38, 0x32, 0x52, 0x44, 0x34, 0x30, 0x32, 0x31, 0x32, 0x31, 0x31,
		0x28, 0xca, 0x9c, 0xAD, 0xbb, 0x2d, 0xf0, 0x41, 0x6e, 0xce, 0xad, 0x73, 0xae, 0x1c, 0xd1, 0x14,
		0x6f, 0x9a, 0x75, 0x18, 0xa8, 0x91, 0x68, 0xe4, 0x09, 0xf4, 0x0f, 0xd7, 0xff, 0x93, 0x7d, 0x1b,
		0xeb, 0x84, 0xce, 0xad, 0x9e, 0xcf, 0xc9, 0xab, 0x18, 0x59, 0xb6, 0xde, 0x82, 0x13, 0x7c, 0x88,
		0x69, 0x63, 0xff, 0x6f, 0x3c, 0xd2, 0xb9, 0x29, 0x09, 0xf8, 0x97, 0xaa, 0x74, 0xa5, 0x16, 0x0d,
		0xf9, 0x51, 0x9e, 0x9f, 0x63, 0xc6, 0x1e, 0x32, 0x8c, 0x0c, 0xe9, 0xa0, 0x56, 0x95, 0xd1, 0x9d,
		0xea, 0xa9, 0x82, 0xc3, 0x30, 0x15, 0x21, 0xd8, 0x8f, 0x10, 0x25, 0x61, 0xe6, 0x6d, 0x75, 0x6d,
		0xcb, 0x08, 0xc3, 0x9b, 0x03, 0x6a, 0x28, 0x6d, 0x42, 0xbf, 0x00, 0xd2, 0x24, 0xfa, 0x08, 0xee,
		0x6b, 0x46, 0xb7, 0x2c, 0x7b, 0xb0, 0xda, 0x86, 0x13, 0x14, 0x73, 0x14, 0x4d, 0x45, 0xd3, 0xd4,
		0xd9, 0x80, 0xf5, 0xb8, 0x76, 0x13, 0x1e, 0xf6, 0xb1, 0x4a, 0xb3, 0x8b, 0xe2, 0x9a, 0x5a, 0x11,
		0x64, 0x11, 0x55, 0xc3, 0x14, 0xfd, 0x1b, 0xce, 0x0c, 0xdc, 0x38, 0xda, 0xa1, 0x84, 0x66, 0xd9,
		0x9b, 0x93, 0xed, 0x0f, 0xb4, 0x19, 0x38, 0x62, 0x53, 0x85, 0xb9, 0xe4, 0x89, 0xcd, 0xfe, 0x9e,
		0x4d, 0xe2, 0x14, 0x9f, 0xf4, 0x53, 0x1c, 0x46, 0xf4, 0x40, 0x2c, 0xcc, 0xda, 0x82, 0x69, 0x15,
		0x88, 0x18, 0x62, 0xb7, 0xb4, 0xd5, 0xaf, 0x4b, 0x9e, 0x48, 0xca, 0xf4, 0x11, 0xec, 0x2d, 0x2e,
		0x9d, 0x91, 0xad, 0xda, 0x13, 0x0a, 0x16, 0x86, 0x41, 0x18, 0x08, 0x01, 0xEF, 0x97, 0x11, 0x1f,
		0x1a, 0xe7, 0x0c, 0xc9, 0x6f, 0x9d, 0xb9, 0x49, 0x0b, 0x6b, 0x9e, 0xd4, 0x72, 0x4d, 0x1d, 0x59
};

void gonefsh2_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
	//  IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= gonefsh2_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t sddz_tab[0x100] = {
		0xd7, 0x5f, 0xc8, 0x5b, 0xbf, 0xfa, 0x61, 0x0c, 0xdd, 0xab, 0xc3, 0x26, 0x3b, 0xd8, 0xbc, 0x1e,
		0xa6, 0x4b, 0xcf, 0xdc, 0x12, 0x61, 0x70, 0xd2, 0x76, 0xef, 0x44, 0xe8, 0x9a, 0x65, 0xf5, 0x13,
		0xb3, 0x1e, 0xcd, 0x00, 0xdf, 0x30, 0xa7, 0x9d, 0xb7, 0x49, 0xdf, 0xf6, 0xa7, 0x0b, 0x1a, 0x58,
		0x2a, 0xea, 0x0e, 0x92, 0x39, 0x96, 0x25, 0x5d, 0x1b, 0xda, 0x27, 0x63, 0x4f, 0xe0, 0xda, 0x04,
		0x7e, 0x10, 0x16, 0xbc, 0xff, 0x52, 0x73, 0x4a, 0x82, 0xd4, 0xba, 0xd8, 0x13, 0xb3, 0xe9, 0xfd,
		0x9a, 0x6c, 0x6c, 0xd6, 0xef, 0x63, 0x9d, 0xa2, 0xf6, 0x26, 0x94, 0x55, 0x25, 0x93, 0x21, 0x26,
		0x2a, 0xbf, 0x4b, 0xc8, 0x22, 0x18, 0x2d, 0x5d, 0xb6, 0x02, 0xba, 0x70, 0xcd, 0xae, 0xd5, 0xed,
		0x5f, 0x48, 0xca, 0xd5, 0x3d, 0x41, 0xd0, 0xee, 0xd7, 0xd9, 0xba, 0x01, 0x6c, 0x34, 0x58, 0x33,
		0xde, 0x44, 0x6d, 0xee, 0x95, 0x5c, 0x0f, 0x97, 0x98, 0xdc, 0xf0, 0x76, 0xc5, 0x73, 0x46, 0x51,
		0x1c, 0xe5, 0xe0, 0xda, 0x4b, 0x38, 0xb6, 0x08, 0x20, 0xfd, 0xa2, 0xbc, 0x0e, 0xcc, 0xa9, 0xac,
		0x84, 0xb8, 0x42, 0x5c, 0x5b, 0x14, 0x4f, 0xc3, 0xb0, 0x2b, 0xbd, 0x68, 0x42, 0xbc, 0x9c, 0x01,
		0x7e, 0xec, 0xd6, 0x3b, 0x20, 0x10, 0x07, 0x78, 0xdf, 0x18, 0xa5, 0xa2, 0x15, 0xa2, 0x7a, 0xa0,
		0x7c, 0xf1, 0xcb, 0x1a, 0x7d, 0x69, 0x47, 0xe9, 0xd9, 0xf6, 0xf7, 0x78, 0x41, 0x8f, 0x0f, 0x24,
		0xed, 0xb5, 0x04, 0x39, 0x09, 0xf0, 0x7b, 0x06, 0x14, 0xb4, 0xc1, 0xe2, 0xc5, 0xa0, 0x2d, 0x75,
		0xb9, 0xb7, 0xa8, 0x81, 0x03, 0x13, 0xce, 0x0e, 0x47, 0x45, 0x0f, 0xfe, 0xe5, 0x24, 0xf7, 0x77,
		0x4c, 0x87, 0xd2, 0x04, 0xe9, 0xc1, 0xea, 0x7b, 0xbe, 0x58, 0x4f, 0x35, 0x27, 0xfc, 0xf1, 0x11
};

void sddz_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT;
		IGS27_CRYPT2_ALT
	//  IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= sddz_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t lhzb3_tab[0x100] = {
	0x13, 0x45, 0x21, 0xA1, 0x69, 0x9A, 0x05, 0xDA, 0x7D, 0x10, 0xDA, 0x7F, 0x34, 0x9F, 0xF3, 0x64,
	0x35, 0xF9, 0x16, 0x1C, 0xD4, 0x60, 0x02, 0xF3, 0x42, 0xC7, 0x42, 0x29, 0xF3, 0x2C, 0x31, 0x71,
	0x50, 0x35, 0x4E, 0xAA, 0x9F, 0x09, 0xC3, 0xDD, 0x2F, 0x72, 0x30, 0x77, 0xC7, 0x30, 0xBC, 0xC8,
	0x51, 0xA0, 0x5E, 0xBB, 0xC3, 0x8E, 0x69, 0xD7, 0x4F, 0x57, 0x56, 0x77, 0xCB, 0x43, 0xD6, 0x46,
	0x62, 0x21, 0x18, 0xFD, 0x7D, 0x24, 0x58, 0x61, 0xEC, 0xFE, 0xA9, 0x77, 0x59, 0x3B, 0x03, 0x0A,
	0xEF, 0xDF, 0x90, 0x60, 0x46, 0x43, 0x33, 0x38, 0x92, 0x2D, 0x5A, 0x08, 0x0D, 0x2F, 0x05, 0x75,
	0x3E, 0x60, 0x87, 0x22, 0xB7, 0xBF, 0xD6, 0xF9, 0x17, 0x86, 0xEA, 0x02, 0xBE, 0x23, 0xBA, 0xD3,
	0xDD, 0x0D, 0x3E, 0x8C, 0x65, 0xA0, 0xF8, 0xD8, 0x2F, 0x35, 0xC6, 0x26, 0x6C, 0x81, 0xE6, 0x29,
	0x50, 0x30, 0x4A, 0x8E, 0xFA, 0xC2, 0x1E, 0xFD, 0xA7, 0xA5, 0x98, 0x53, 0x18, 0x94, 0xFF, 0x1D,
	0x41, 0x2F, 0xFF, 0x58, 0x33, 0xDC, 0x2B, 0x67, 0x4B, 0xDD, 0xD3, 0x56, 0x9C, 0xB2, 0x09, 0x4E,
	0x9B, 0xB1, 0xEE, 0x58, 0x0A, 0xE4, 0x42, 0x56, 0x26, 0x23, 0x2C, 0x3F, 0x14, 0x73, 0x46, 0x9A,
	0xA1, 0x42, 0x17, 0x12, 0xDB, 0xA2, 0xDD, 0x5D, 0x0C, 0xEC, 0xDC, 0xF7, 0xC1, 0x76, 0xE0, 0x24,
	0x65, 0xEF, 0x41, 0x83, 0x35, 0x38, 0x78, 0x0E, 0x65, 0x82, 0xE3, 0x55, 0x90, 0xA8, 0xD5, 0xF7,
	0x66, 0xCF, 0xE2, 0x61, 0x91, 0x3C, 0x69, 0xCB, 0xE7, 0x75, 0x62, 0x6F, 0xD7, 0x9B, 0x69, 0x0C,
	0x0D, 0x07, 0x0C, 0x9C, 0x68, 0x24, 0x51, 0x51, 0x1F, 0x8D, 0x8B, 0xD6, 0x2E, 0x67, 0x5F, 0xC3,
	0x07, 0x00, 0x12, 0x61, 0x77, 0xA8, 0x15, 0xA1, 0xD6, 0xD0, 0xD3, 0x57, 0x73, 0x62, 0xB9, 0xBB
};

void lhzb3_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
	//  IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= lhzb3_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t mgfx_tab[0x100] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x38, 0x33, 0x52, 0x44, 0x34, 0x30, 0x32, 0x31, 0x32, 0x31, 0x32,
	0x82, 0x6B, 0xCA, 0xBE, 0x9B, 0x9F, 0xC3, 0xA5, 0x8F, 0x2A, 0x9F, 0x0E, 0x26, 0x28, 0x4A, 0x9D,
	0xA2, 0x57, 0xFC, 0x43, 0xF3, 0x34, 0x05, 0x72, 0x1E, 0x59, 0xD9, 0xA0, 0xE7, 0x16, 0x5B, 0xFF,
	0xC6, 0x4F, 0x6E, 0x7A, 0x09, 0x96, 0xBA, 0xF3, 0x46, 0x89, 0xBB, 0xBC, 0x04, 0x6D, 0x11, 0x54,
	0xA9, 0x0B, 0x03, 0x63, 0xA6, 0xCB, 0x54, 0xF7, 0xE2, 0x0F, 0x4B, 0x01, 0x65, 0xD3, 0xFD, 0x0B,
	0x46, 0x82, 0xDE, 0x3C, 0xD7, 0x1B, 0x87, 0x8E, 0x0E, 0x84, 0xCA, 0x4D, 0x37, 0x2E, 0xF4, 0xD4,
	0xD8, 0xEB, 0x61, 0x84, 0xE5, 0x0C, 0x46, 0x05, 0x25, 0xBF, 0xBB, 0xC0, 0xE4, 0xA7, 0x07, 0x9D,
	0xDA, 0xBD, 0x31, 0xFA, 0x5B, 0x66, 0xC3, 0xEC, 0xC1, 0xD5, 0xE1, 0xB9, 0x17, 0xA4, 0x8B, 0x96,
	0x07, 0xAE, 0x2F, 0x9D, 0x06, 0x30, 0x73, 0x12, 0xBE, 0x1F, 0x40, 0xD7, 0xBB, 0xCC, 0x12, 0x2D,
	0x5A, 0xB6, 0x7F, 0xAD, 0xEF, 0xB0, 0x06, 0x86, 0x36, 0x34, 0x1A, 0xF8, 0xFC, 0x06, 0x6F, 0x11,
	0x0E, 0x0C, 0x84, 0xA7, 0x62, 0x6D, 0x71, 0x97, 0x84, 0xE9, 0xF3, 0x3C, 0x44, 0x79, 0xB5, 0x32,
	0x9E, 0x27, 0xE1, 0x4C, 0xEA, 0x30, 0xE7, 0xD4, 0x45, 0x57, 0x8D, 0x02, 0x3E, 0x8C, 0x38, 0xBF,
	0xC5, 0xBE, 0x79, 0x9B, 0x51, 0xFD, 0xDB, 0x0B, 0x51, 0xD5, 0xEC, 0xE8, 0xD6, 0xE6, 0x89, 0x26,
	0x7E, 0xC8, 0x6F, 0xD1, 0xA4, 0x1E, 0xFF, 0x4D, 0xC5, 0xF8, 0x51, 0xCE, 0x36, 0x6F, 0x7D, 0x16,
	0x04, 0x7B, 0x26, 0x6F, 0x2C, 0x18, 0x47, 0xE8, 0xFC, 0x99, 0x42, 0xD3, 0xC9, 0x4C, 0x26, 0x7F,
	0xD2, 0x4F, 0x40, 0x32, 0x74, 0xB2, 0xE6, 0x6B, 0x90, 0xCF, 0x7F, 0x56, 0x3A, 0xE5, 0xD7, 0x8F
};

void mgfx_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1_ALT
	//  IGS27_CRYPT2
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
	//  IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= mgfx_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t lhzb4_tab[0x100] = {
	0x49, 0x47, 0x53, 0x30, 0x31, 0x36, 0x39, 0x52, 0x44, 0x32, 0x30, 0x34, 0x30, 0x37, 0x33, 0x30,
	0x87, 0xA5, 0x22, 0x6E, 0x2F, 0x89, 0xC6, 0x3B, 0xF3, 0x4D, 0x29, 0xD5, 0x46, 0x17, 0x9C, 0x38,
	0xC2, 0xE4, 0x16, 0x4B, 0x36, 0xFD, 0xE0, 0x7F, 0xF2, 0xBE, 0x83, 0xA6, 0x52, 0x87, 0xF2, 0x11,
	0x88, 0x03, 0xF4, 0xEE, 0xAF, 0x98, 0xD5, 0xE0, 0x0E, 0x2F, 0x4D, 0xDF, 0xA9, 0x26, 0xB1, 0x53,
	0x0E, 0x92, 0x58, 0x6C, 0x5E, 0xB9, 0x50, 0xC5, 0x99, 0xCF, 0x42, 0x39, 0x2F, 0xF1, 0xA3, 0x04,
	0xC5, 0x60, 0x1D, 0x1E, 0x44, 0xFF, 0x3D, 0xD5, 0x28, 0x0E, 0x5D, 0xA9, 0x08, 0x29, 0xD4, 0x6C,
	0x61, 0x7C, 0x5D, 0x9B, 0xA7, 0x48, 0xC5, 0xF7, 0x8E, 0x9B, 0xD9, 0x67, 0x95, 0x4B, 0x8F, 0x12,
	0xD4, 0x35, 0x74, 0xB8, 0x07, 0xB4, 0x55, 0x52, 0xDC, 0x64, 0x32, 0xEA, 0x7A, 0x18, 0x5F, 0xBC,
	0x52, 0x19, 0xFC, 0x8E, 0x2A, 0xA2, 0x98, 0x4D, 0x66, 0x99, 0x21, 0xE9, 0x9A, 0x8E, 0x0F, 0x72,
	0x4D, 0xF9, 0xD1, 0x74, 0x10, 0xB0, 0x77, 0x8F, 0xC0, 0xA7, 0xA2, 0x5B, 0x17, 0xED, 0xA9, 0x7B,
	0x7A, 0xE3, 0x0D, 0xFF, 0xFE, 0xBE, 0x1F, 0xFF, 0xBB, 0x40, 0xF0, 0x76, 0x56, 0xB2, 0x79, 0x5D,
	0xC9, 0x26, 0x0C, 0x08, 0x76, 0xEB, 0xFA, 0xC5, 0x6C, 0x51, 0x86, 0xB2, 0xF9, 0x9E, 0x0A, 0xDF,
	0x70, 0x50, 0x68, 0xA5, 0x3C, 0x96, 0xB4, 0x46, 0x25, 0x09, 0x1F, 0xC6, 0xE2, 0xAF, 0x26, 0x09,
	0xE0, 0x32, 0xFD, 0x2E, 0x52, 0x5D, 0x36, 0x2B, 0x79, 0xD8, 0xB6, 0xA9, 0x35, 0x24, 0xDA, 0x22,
	0xCD, 0xDA, 0xE5, 0x39, 0xFB, 0x20, 0xAD, 0x59, 0x3C, 0x6C, 0x86, 0x92, 0x56, 0x7D, 0x6F, 0xB0,
	0x29, 0x96, 0x7C, 0x9D, 0xBB, 0xFD, 0x83, 0xF9, 0x7F, 0xB5, 0x0A, 0xF8, 0xE6, 0x77, 0x71, 0x7B
};

void lhzb4_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
	//  IGS27_CRYPT2
	//  IGS27_CRYPT3
		IGS27_CRYPT4_ALT
	//  IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= lhzb4_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static const uint8_t fearless_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x32, 0x30, 0x32, 0x52, 0x44, 0x32, 0x30, 0x35, 0x30, 0x31, 0x30, 0x33,
	0x0A, 0x68, 0x3C, 0x24, 0x56, 0x67, 0xED, 0xE3, 0x3A, 0x99, 0x20, 0x24, 0x09, 0x4D, 0x0C, 0xB6,
	0x0D, 0xBB, 0xE0, 0xE4, 0x93, 0x79, 0x6C, 0x10, 0x3B, 0x3B, 0x10, 0x91, 0x7E, 0xCF, 0xE5, 0xC9,
	0x80, 0x58, 0x2B, 0x8B, 0x18, 0xCA, 0xF3, 0xAC, 0x1D, 0xA6, 0x0D, 0xE7, 0xF4, 0xF7, 0x34, 0xF6,
	0x57, 0x8D, 0x79, 0xEF, 0x67, 0x79, 0xED, 0xDC, 0xF5, 0xCA, 0x92, 0x9E, 0x0D, 0x86, 0x84, 0x04,
	0xC5, 0xEB, 0x64, 0x27, 0x44, 0xE7, 0x05, 0x09, 0x15, 0xD5, 0x5A, 0x6D, 0xAE, 0x7A, 0xA0, 0xF9,
	0x3C, 0x40, 0xC8, 0x8B, 0xB1, 0xB1, 0x27, 0xD8, 0x10, 0x37, 0x61, 0x4B, 0xF8, 0x12, 0x92, 0x1D,
	0x70, 0x9A, 0xBF, 0xB0, 0xF2, 0xB7, 0x7D, 0x32, 0xBA, 0x9E, 0xE0, 0x6F, 0x4F, 0xCE, 0xA6, 0xF6,
	0x53, 0x4A, 0xA5, 0x70, 0x88, 0x18, 0x72, 0x3C, 0x24, 0xFA, 0x53, 0x50, 0x57, 0x6B, 0x67, 0x4C,
	0x19, 0xDD, 0x14, 0xDF, 0x39, 0x32, 0xB1, 0x5F, 0xA2, 0x79, 0x75, 0xA4, 0xF1, 0xEA, 0xA0, 0x25,
	0x35, 0x24, 0xE8, 0x56, 0x05, 0xA5, 0x26, 0x41, 0xC8, 0x8A, 0x41, 0x63, 0x41, 0x89, 0x5B, 0xC9,
	0x59, 0x2C, 0x3B, 0x6C, 0x31, 0x50, 0xFB, 0xC9, 0x68, 0xDD, 0xF2, 0xC4, 0xA9, 0xC7, 0xE4, 0xBF,
	0x79, 0x46, 0x69, 0xF6, 0x3F, 0x51, 0x9B, 0x1E, 0x95, 0x61, 0x04, 0x3E, 0xCE, 0x64, 0xC6, 0xCD,
	0xC8, 0xFF, 0x0C, 0x0D, 0xF3, 0x08, 0xB1, 0xA7, 0xA2, 0x44, 0x30, 0x88, 0x92, 0x5D, 0xCC, 0xFB,
	0xB8, 0x27, 0x00, 0x07, 0x4F, 0x14, 0x29, 0x0B, 0x22, 0xF5, 0x72, 0x98, 0x17, 0xF3, 0x00, 0x8F,
	0xFD, 0xCD, 0x60, 0x7C, 0x97, 0x54, 0x2D, 0x32, 0xE9, 0x24, 0x05, 0xA7, 0xC1, 0xA4, 0xAF, 0x11
};

void fearless_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		// might not be 100% correct...
		IGS27_CRYPT1
		// IGS27_CRYPT2
		IGS27_CRYPT3_ALT2
		IGS27_CRYPT4
		// IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= fearless_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}


static unsigned char pgm3in1_tab[256] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x31, 0x31, 0x72, 0x64, 0x31, 0x30, 0x34, 0x30, 0x36, 0x33, 0x30,
	0xc2, 0xbe, 0xde, 0x8b, 0x80, 0x8f, 0x04, 0xbb, 0xd2, 0xd6, 0x11, 0x4a, 0x54, 0xa9, 0x8d, 0x27,
	0xf1, 0x74, 0x88, 0xc2, 0xa3, 0xdd, 0x73, 0x97, 0x6c, 0xf8, 0x41, 0xf9, 0x95, 0xac, 0xbe, 0x20,
	0x26, 0x65, 0x2f, 0x76, 0xa6, 0xfc, 0x2b, 0x1f, 0x15, 0xe3, 0xb9, 0xc7, 0x27, 0x95, 0xab, 0xaf,
	0xc2, 0x3d, 0x3a, 0xfb, 0xba, 0xa5, 0xe3, 0x35, 0xcb, 0x62, 0x81, 0x26, 0xd7, 0x3e, 0xac, 0xd7,
	0x62, 0xe6, 0x51, 0xe2, 0x4b, 0xd5, 0x92, 0xfe, 0xcd, 0x80, 0xe0, 0xca, 0xb6, 0xc3, 0x57, 0xda,
	0xe6, 0x8b, 0x59, 0x00, 0x0a, 0xc5, 0x6f, 0xdc, 0x9a, 0x87, 0x5c, 0xa6, 0x11, 0x7e, 0x83, 0x3b,
	0x6c, 0x98, 0x7b, 0x66, 0xe6, 0xf2, 0xf0, 0x71, 0xf2, 0x04, 0xbd, 0xed, 0x78, 0x0b, 0x47, 0xbd,
	0x54, 0xb6, 0x1d, 0x69, 0x0d, 0x15, 0xcd, 0xa2, 0xd2, 0xc0, 0x09, 0x11, 0xbb, 0x44, 0xfb, 0x64,
	0x3d, 0xd3, 0xe5, 0x9b, 0xee, 0x2b, 0xfd, 0x90, 0x7b, 0xc6, 0x88, 0xc5, 0xe7, 0x44, 0x35, 0x73,
	0x06, 0x17, 0xbc, 0xcf, 0x39, 0x6e, 0xb7, 0x9f, 0x6b, 0x63, 0xc1, 0xfe, 0x4c, 0x68, 0xcd, 0x6c,
	0xcd, 0xee, 0xc8, 0x19, 0xdc, 0x58, 0x72, 0x72, 0x62, 0x20, 0x7a, 0xed, 0x79, 0x48, 0xd8, 0x12,
	0xf2, 0x04, 0x70, 0xca, 0x07, 0xa6, 0xe5, 0xec, 0x5d, 0xc9, 0xba, 0x05, 0x3e, 0xc2, 0xb0, 0x68,
	0x14, 0x43, 0x5b, 0x77, 0x28, 0x51, 0x06, 0x30, 0x9d, 0x69, 0xc9, 0xfb, 0xa8, 0xee, 0xe9, 0xb2,
	0x11, 0xd7, 0x70, 0xf2, 0xef, 0x96, 0x0d, 0xa1, 0xa0, 0x4b, 0x2e, 0xc0, 0x07, 0x2a, 0x5c, 0x72,
	0x09, 0x29, 0xd6, 0x4d, 0x4a, 0xef, 0x71, 0xe1, 0x25, 0xf9, 0xb0, 0x87, 0xea, 0x0f, 0x1f, 0x6c,
};

void pgm_decrypt_pgm3in1(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);

	int rom_size = 0x400000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2
		IGS27_CRYPT3_ALT
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6
		IGS27_CRYPT7
		IGS27_CRYPT8_ALT

		x ^= pgm3in1_tab[i & 0xff] << 8;

		src[i] = x;
	}
}


// IGS MAHJONG CHINA VS107C
static const uint8_t slqz3_tab[0x100] = {
	0xef, 0xdf, 0x90, 0x60, 0x46, 0x43, 0x33, 0x38, 0x92, 0x2d, 0x5a, 0x08, 0x0d, 0x2f, 0x05, 0x75,
	0xa1, 0x42, 0x17, 0x12, 0xdb, 0xa2, 0xdd, 0x5d, 0x0c, 0xec, 0xdc, 0xf7, 0xc1, 0x76, 0xe0, 0x24,
	0x65, 0xef, 0x41, 0x83, 0x35, 0x38, 0x78, 0x0e, 0x65, 0x82, 0xe3, 0x55, 0x90, 0xa8, 0xd5, 0xf7,
	0x66, 0xcf, 0xe2, 0x61, 0x91, 0x3c, 0x69, 0xcb, 0xe7, 0x75, 0x62, 0x6f, 0xd7, 0x9b, 0x69, 0x0c,
	0x0d, 0x07, 0x0c, 0x9c, 0x68, 0x24, 0x51, 0x51, 0x1f, 0x8d, 0x8b, 0xd6, 0x2e, 0x67, 0x5f, 0xc3,
	0x13, 0x45, 0x21, 0xa1, 0x69, 0x9a, 0x05, 0xda, 0x7d, 0x10, 0xda, 0x7f, 0x34, 0x9f, 0xf3, 0x64,
	0x35, 0xf9, 0x16, 0x1c, 0xd4, 0x60, 0x02, 0xf3, 0x42, 0xc7, 0x42, 0x29, 0xf3, 0x2c, 0x31, 0x71,
	0x50, 0x35, 0x4e, 0xaa, 0x9f, 0x09, 0xc3, 0xdd, 0x2f, 0x72, 0x30, 0x77, 0xc7, 0x30, 0xbc, 0xc8,
	0x51, 0xa0, 0x5e, 0xbb, 0xc3, 0x8e, 0x69, 0xd7, 0x4f, 0x57, 0x56, 0x77, 0xcb, 0x43, 0xd6, 0x46,
	0x62, 0x21, 0x18, 0xfd, 0x7d, 0x24, 0x58, 0x61, 0xec, 0xfe, 0xa9, 0x77, 0x59, 0x3b, 0x03, 0x0a,
	0x07, 0x00, 0x12, 0x61, 0x77, 0xa8, 0x15, 0xa1, 0xd6, 0xd0, 0xd3, 0x57, 0x73, 0x62, 0xb9, 0xbb,
	0x3e, 0x60, 0x87, 0x22, 0xb7, 0xbf, 0xd6, 0xf9, 0x17, 0x86, 0xea, 0x02, 0xbe, 0x23, 0xba, 0xd3,
	0xdd, 0x0d, 0x3e, 0x8c, 0x65, 0xa0, 0xf8, 0xd8, 0x2f, 0x35, 0xc6, 0x26, 0x6c, 0x81, 0xe6, 0x29,
	0x50, 0x30, 0x4a, 0x8e, 0xfa, 0xc2, 0x1e, 0xfd, 0xa7, 0xa5, 0x98, 0x53, 0x18, 0x94, 0xff, 0x1d,
	0x41, 0x2f, 0xff, 0x58, 0x33, 0xdc, 0x2b, 0x67, 0x4b, 0xdd, 0xd3, 0x56, 0x9c, 0xb2, 0x09, 0x4e,
	0x9b, 0xb1, 0xee, 0x58, 0x0a, 0xe4, 0x42, 0x56, 0x26, 0x23, 0x2c, 0x3f, 0x14, 0x73, 0x46, 0x9a
};

void slqz3_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x200000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		// not 100% verified
		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= slqz3_tab[(i/2) & 0xff] << 8;

		src[i] = x;
	}
}

static const uint8_t fruitpar_tab[0x100] = {
	0xe9, 0x0b, 0x95, 0x7e, 0x0d, 0x7d, 0x5c, 0x1e, 0x81, 0x0e, 0xa6, 0xd4, 0x8e, 0x90, 0xd8, 0x54,
	0x27, 0x65, 0x51, 0x08, 0x1c, 0xa0, 0x3b, 0x51, 0x83, 0x60, 0x93, 0x02, 0x64, 0x69, 0x77, 0x1a,
	0xa4, 0x03, 0xb0, 0xc2, 0x34, 0x18, 0x80, 0x87, 0x7a, 0x88, 0xad, 0xd9, 0xff, 0xd0, 0xce, 0xc4,
	0x5b, 0xdc, 0xd5, 0xed, 0x5e, 0x29, 0xdd, 0xcf, 0x80, 0x1f, 0x36, 0x38, 0x8b, 0xae, 0xae, 0xfe,
	0x87, 0x27, 0x22, 0x07, 0xe6, 0x5d, 0x46, 0x79, 0xf1, 0xfc, 0xb1, 0x3d, 0x72, 0x29, 0x2c, 0xba,
	0xa3, 0x5b, 0x3c, 0xcf, 0x57, 0x79, 0xed, 0x12, 0x67, 0x34, 0xe1, 0x48, 0x5f, 0xa7, 0x9a, 0x24,
	0x6a, 0x2e, 0x04, 0x44, 0x7b, 0x84, 0x46, 0x6a, 0xbd, 0x20, 0xca, 0xf7, 0x3e, 0xd1, 0x8b, 0xad,
	0xd7, 0x98, 0x9e, 0xa6, 0x5e, 0xc6, 0x04, 0x90, 0x0f, 0x57, 0xae, 0x2b, 0x38, 0x8d, 0xd2, 0x0c,
	0x25, 0xd1, 0x6d, 0x73, 0x4b, 0xc6, 0x19, 0xd3, 0xb8, 0xae, 0x11, 0x01, 0xba, 0x02, 0x82, 0x17,
	0xcf, 0x4d, 0x14, 0x6a, 0xcd, 0x4a, 0xb9, 0xc1, 0x52, 0x3e, 0xb5, 0xd8, 0x6f, 0x98, 0xee, 0x16,
	0x90, 0xc6, 0x76, 0x8a, 0xaf, 0x5a, 0x56, 0x2b, 0xb9, 0x5e, 0x9e, 0x51, 0x40, 0xf4, 0xaa, 0x6e,
	0x63, 0x32, 0xb6, 0x12, 0xfb, 0x3c, 0xa5, 0x1f, 0x07, 0xa3, 0x0d, 0x49, 0x5a, 0xfe, 0x88, 0xd1,
	0x83, 0xc7, 0x37, 0x82, 0xfd, 0x78, 0x97, 0xec, 0x98, 0xe6, 0x88, 0xe0, 0x27, 0xde, 0x9a, 0x2c,
	0x6b, 0xfd, 0x9b, 0x98, 0x40, 0xd5, 0x5f, 0x20, 0x06, 0x3e, 0xcf, 0x74, 0x52, 0xf9, 0x35, 0xae,
	0xd6, 0x8c, 0xc7, 0x53, 0x8e, 0x59, 0x71, 0x8c, 0x2d, 0x00, 0xe7, 0xa5, 0xc7, 0xf8, 0xeb, 0xc7,
	0xbf, 0x68, 0xdc, 0xf2, 0xf4, 0x4c, 0x80, 0x3e, 0x27, 0xc5, 0x13, 0x52, 0xb0, 0xc0, 0x90, 0x2d
};

void fruitpar_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	// not 100% verified
	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		IGS27_CRYPT1
//      IGS27_CRYPT2
//      IGS27_CRYPT3
		IGS27_CRYPT4_ALT
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= fruitpar_tab[(i>> 1) & 0xff] << 8;

		src[i] = x;
	}
}

static uint8_t amazonia_tab[0x100] = {
	0x86, 0x00, 0xd2, 0x6b, 0x78, 0x79, 0xbc, 0x80, 0xc6, 0x8e, 0x9b, 0xd8, 0x3a, 0x52, 0x09, 0x15,
	0x05, 0x57, 0x7a, 0x1f, 0x2f, 0x08, 0x47, 0xa0, 0x44, 0x4c, 0xf7, 0xbe, 0x3d, 0x59, 0xd1, 0x18,
	0xac, 0xd5, 0xa0, 0x03, 0x2c, 0x34, 0xc6, 0x06, 0x08, 0x4e, 0x84, 0x94, 0x2b, 0x3f, 0x88, 0x08,
	0x48, 0x84, 0xb8, 0xe6, 0x4a, 0x53, 0x3e, 0x51, 0xfe, 0x3b, 0xd4, 0xc8, 0xff, 0xfd, 0x52, 0x25,
	0xe2, 0xa9, 0x75, 0xd7, 0xa3, 0xfc, 0xf1, 0x5f, 0x50, 0xfa, 0xba, 0x09, 0xf4, 0xc8, 0x90, 0xed,
	0xc6, 0xcc, 0xc9, 0x25, 0x93, 0x07, 0x63, 0x50, 0x69, 0xb2, 0x4a, 0x47, 0x85, 0x18, 0xe6, 0x1f,
	0x7f, 0xb3, 0xe8, 0x5f, 0xb4, 0x8a, 0x56, 0x83, 0xf4, 0xca, 0xd5, 0xb1, 0x6d, 0xa3, 0x37, 0xba,
	0xd7, 0x66, 0x45, 0x54, 0xe2, 0xdc, 0xce, 0x96, 0xdc, 0xe9, 0xf0, 0xb5, 0xa7, 0x62, 0xa5, 0xfd,
	0xdb, 0x2b, 0x92, 0x13, 0x37, 0x95, 0x0c, 0x69, 0x4d, 0xf7, 0x6c, 0x02, 0x6e, 0x8a, 0x95, 0x68,
	0xd4, 0x8a, 0xc3, 0xea, 0x0f, 0x8b, 0x96, 0x1b, 0xb1, 0x19, 0x5e, 0x88, 0x3d, 0x94, 0xa9, 0xb9,
	0x4e, 0x4a, 0x0a, 0x6a, 0x04, 0xd5, 0x2c, 0x0b, 0xb4, 0xb7, 0x18, 0x75, 0xcf, 0x35, 0xc3, 0xef,
	0x13, 0x71, 0xdb, 0x61, 0xf2, 0xcb, 0xd3, 0xd7, 0x3f, 0x79, 0x2d, 0x39, 0x20, 0x65, 0x07, 0x49,
	0x30, 0x47, 0xe9, 0xdd, 0xf3, 0x03, 0xce, 0x5f, 0x7f, 0x45, 0x70, 0x82, 0x69, 0x5a, 0xd9, 0x46,
	0xee, 0x52, 0x27, 0x2f, 0x63, 0x54, 0x9f, 0xc1, 0xde, 0x41, 0xf5, 0x40, 0x26, 0x8d, 0xda, 0xa6,
	0xd9, 0x5a, 0xc7, 0xe4, 0xdc, 0xd6, 0x09, 0x5e, 0x08, 0xd6, 0x0d, 0xa1, 0x12, 0xb3, 0xee, 0x67,
	0xbb, 0x65, 0x3c, 0xcd, 0x3a, 0xdf, 0x0f, 0xd3, 0xe6, 0xaa, 0x4d, 0x14, 0x28, 0xc5, 0x38, 0xc8
};

void amazonia_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++) {
		uint16_t x = src[i];

		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
		IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= amazonia_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}

// not 100% verified
static const uint8_t amazoni2_tab[0x100] = {
	0x49, 0x47, 0x53, 0x30, 0x30, 0x37, 0x37, 0x52, 0x44, 0x34, 0x30, 0x32, 0x31, 0x30, 0x31, 0x36,
	0xed, 0x3f, 0x77, 0xd0, 0xc4, 0x72, 0x77, 0xe1, 0x35, 0x15, 0x10, 0xc6, 0x1b, 0xee, 0x25, 0x4a,
	0x0d, 0x06, 0x37, 0x19, 0xfa, 0xf9, 0x29, 0xb0, 0x03, 0x7e, 0x32, 0x83, 0x99, 0x32, 0x23, 0x6e,
	0xd8, 0xa9, 0xdb, 0x5f, 0x23, 0xb7, 0x08, 0x41, 0x00, 0xfb, 0x20, 0x2b, 0x36, 0xae, 0x9f, 0xc9,
	0x24, 0xaa, 0x82, 0x0b, 0x64, 0xbe, 0x03, 0x0d, 0xa2, 0x31, 0x97, 0x47, 0xb6, 0x94, 0x26, 0xf6,
	0x09, 0xcd, 0x8a, 0xca, 0x26, 0x61, 0x4a, 0xd1, 0x9f, 0x01, 0x98, 0xa3, 0x23, 0x58, 0x88, 0xcf,
	0xdd, 0x14, 0x93, 0x86, 0x0f, 0x33, 0x4c, 0x86, 0xef, 0x8f, 0x61, 0x4a, 0xc2, 0xad, 0xd5, 0x70,
	0x37, 0xc2, 0x7b, 0x6a, 0x06, 0x07, 0xb7, 0x69, 0xc9, 0x3f, 0x71, 0x87, 0x1a, 0x85, 0x5a, 0x33,
	0xee, 0x5b, 0x63, 0xe2, 0x32, 0xf0, 0x7a, 0xf4, 0xa4, 0xb2, 0x87, 0xe4, 0xf3, 0x14, 0xa7, 0xb4,
	0x1a, 0xa1, 0xa8, 0x98, 0xf9, 0x42, 0xc5, 0xe1, 0x36, 0xcc, 0xa3, 0x2d, 0x54, 0xcd, 0x8b, 0xcd,
	0x11, 0x98, 0xe9, 0x77, 0x05, 0x8e, 0x06, 0x2d, 0x78, 0xb0, 0x02, 0x6d, 0x83, 0x62, 0x15, 0x9a,
	0x6b, 0x82, 0x07, 0xaa, 0x3a, 0xa9, 0xed, 0x12, 0x9f, 0xc0, 0x25, 0xee, 0x08, 0xc7, 0x94, 0x75,
	0xfd, 0xe2, 0x1f, 0x9d, 0xc0, 0xa5, 0x68, 0x0a, 0x23, 0xa1, 0xca, 0x3d, 0xa9, 0x2f, 0x97, 0xfa,
	0xe0, 0x7c, 0x91, 0xfa, 0xfe, 0xd5, 0xa6, 0xd2, 0xbb, 0x34, 0xf1, 0x23, 0x6e, 0x0c, 0xed, 0x03,
	0x6b, 0x52, 0xfb, 0xac, 0x9c, 0xcc, 0x17, 0x64, 0x5d, 0x9e, 0xd7, 0xac, 0x9e, 0x12, 0xa5, 0xac,
	0x34, 0xa7, 0x3e, 0xde, 0x7f, 0x5d, 0x6a, 0xfa, 0x42, 0x40, 0xfd, 0x23, 0xbf, 0x33, 0x0e, 0x50
};


void amazoni2_decrypt(running_machine &machine)
{
	int i;
	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();

	int rom_size = 0x80000;

	for(i=0; i<rom_size/2; i++)
	{
		uint16_t x = src[i];

		// should be correct
		IGS27_CRYPT1
		IGS27_CRYPT2_ALT
	//    IGS27_CRYPT3
		IGS27_CRYPT4
		IGS27_CRYPT5
		IGS27_CRYPT6_ALT // second half is junk, not sure...
		IGS27_CRYPT7
		IGS27_CRYPT8

		x ^= amazoni2_tab[(i >> 1) & 0xff] << 8;

		src[i] = x;
	}
}