diff --git a/src/mame/igs/igs_m027.cpp b/src/mame/igs/igs_m027.cpp
index 543b32968b0..81ffd359fee 100644
--- a/src/mame/igs/igs_m027.cpp
+++ b/src/mame/igs/igs_m027.cpp
@@ -63,6 +63,8 @@ public:
 	void init_amazonia();
 	void init_amazoni2();
 	void init_qlgs();
+	void init_mgzz();
+	void init_mgcs3();
 
 protected:
 	virtual void video_start() override;
@@ -1188,6 +1190,19 @@ void igs_m027_state::init_qlgs()
 	pgm_create_dummy_internal_arm_region();
 }
 
+void igs_m027_state::init_mgzz()
+{
+	mgzz_decrypt(machine());
+	//qlgs_gfx_decrypt(machine());
+	pgm_create_dummy_internal_arm_region();
+}
+
+void igs_m027_state::init_mgcs3()
+{
+	mgcs3_decrypt(machine());
+	//qlgs_gfx_decrypt(machine());
+	pgm_create_dummy_internal_arm_region();
+}
 
 } // anonymous namespace
 
@@ -1216,5 +1231,5 @@ GAME( 2002, chessc2,   0,        igs_mahjong, sdwx,     igs_m027_state, init_che
 GAME( 200?, haunthig,  0,        igs_mahjong, sdwx,     igs_m027_state, init_hauntedh, ROT0, "IGS", "Haunted House (IGS)",   MACHINE_IS_SKELETON )
 GAME( 200?, extradrw,  0,        igs_mahjong, sdwx,     igs_m027_state, init_qlgs,     ROT0, "IGS", "Extra Draw",   MACHINE_IS_SKELETON )
 GAME( 200?, crzybugs,  0,        igs_mahjong, sdwx,     igs_m027_state, init_qlgs,     ROT0, "IGS", "Crazy Bugs (V103JP)", MACHINE_IS_SKELETON ) // 2006 according to some sources
-GAME( 2003, mgzz,      0,        igs_mahjong, sdwx,     igs_m027_state, init_qlgs,     ROT0, "IGS", "Man Guan Zhi Zun (V100CN)",   MACHINE_IS_SKELETON )
-GAME( 200?, mgcs3,     0,        igs_mahjong, sdwx,     igs_m027_state, init_qlgs,     ROT0, "IGS", "Man Guan Caishen 3 (V101CN)",   MACHINE_IS_SKELETON )
+GAME( 2003, mgzz,      0,        igs_mahjong, sdwx,     igs_m027_state, init_mgzz,     ROT0, "IGS", "Man Guan Zhi Zun (V100CN)",   MACHINE_IS_SKELETON )
+GAME( 2007, mgcs3,     0,        igs_mahjong, sdwx,     igs_m027_state, init_mgcs3,    ROT0, "IGS", "Man Guan Caishen 3 (V101CN)",   MACHINE_IS_SKELETON )
diff --git a/src/mame/igs/pgmcrypt.cpp b/src/mame/igs/pgmcrypt.cpp
index 5e42952f5d8..8694e5118ce 100644
--- a/src/mame/igs/pgmcrypt.cpp
+++ b/src/mame/igs/pgmcrypt.cpp
@@ -1,5 +1,6 @@
 // license:BSD-3-Clause
-// copyright-holders:David Haywood, ElSemi
+// copyright-holders: David Haywood, ElSemi
+
 /* IGS 027 Encryptions
 
   the IGS027 chips are typically used with encrypted ROMs.
@@ -19,7 +20,7 @@
 #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
+// some may be duplicates simply due to differing ROM sizes
 
 #define IGS27_CRYPT1 \
 	if ((i & 0x040480) != 0x000080) x ^= 0x0001;
@@ -86,12 +87,12 @@ static const uint8_t kov_tab[256] = {
 
 void pgm_kov_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -126,18 +127,18 @@ static const uint8_t kovsh_tab[256] = {
 	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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -172,17 +173,17 @@ static const uint8_t photoy2k_tab[256] = {
 	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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -216,17 +217,17 @@ static const uint8_t pstar[256] = {
 	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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x100000;
+	int const rom_size = 0x100000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -258,17 +259,17 @@ static const uint8_t dfront_tab[256] = {
 	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,
+	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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -308,12 +309,12 @@ static const uint8_t ddp2_tab[256] = {
 
 void pgm_ddp2_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT2
@@ -348,17 +349,17 @@ static const uint8_t mm_tab[256] = {
 	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,
+	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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -392,17 +393,17 @@ static const uint8_t kov2_tab[256] = {
 	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,
+	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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -436,17 +437,17 @@ static const uint8_t kov2p_tab[256] = {
 	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,
+	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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -480,17 +481,17 @@ static const uint8_t puzzli2_tab[256] = {
 	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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x100000;
+	int const rom_size = 0x100000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -510,31 +511,31 @@ void pgm_puzzli2_decrypt(running_machine &machine)
 
 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,
+	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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -555,31 +556,31 @@ void pgm_theglad_decrypt(running_machine &machine)
 
 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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		unsigned short x = src[i];
 
 		IGS27_CRYPT1
@@ -600,31 +601,31 @@ void pgm_oldsplus_decrypt(running_machine &machine)
 
 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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		unsigned short x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -645,31 +646,31 @@ void pgm_kovshp_decrypt(running_machine &machine)
 
 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,
+	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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -690,12 +691,12 @@ void pgm_killbldp_decrypt(running_machine &machine)
 
 void pgm_svg_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x800000;
+	int const rom_size = 0x800000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -713,31 +714,31 @@ void pgm_svg_decrypt(running_machine &machine)
 
 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
+		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());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x800000;
+	int const rom_size = 0x800000;
 
-	for (i = 0; i < rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT; // ok?
@@ -777,12 +778,11 @@ static const uint8_t py2k2_tab[256] = {
 
 void pgm_py2k2_decrypt(running_machine &machine) // and ddpdoj/ddpdojbl
 {
-	int i;
-	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base()+0x100000);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -823,12 +823,11 @@ static const unsigned char ket_tab[256] = {
 
 void pgm_ket_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base());
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -869,12 +868,11 @@ static const unsigned char espgal_tab[256] = {
 
 void pgm_espgal_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) (machine.root_device().memregion("maincpu")->base());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base());
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -916,12 +914,11 @@ static const uint8_t happy6in1_tab[256] = { // IGS0008RD1031215
 
 void pgm_happy6_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) (machine.root_device().memregion("user1")->base());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -942,33 +939,32 @@ void pgm_happy6_decrypt(running_machine &machine)
 
 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,
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -990,31 +986,31 @@ void sdwx_decrypt(running_machine &machine)
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x080000;
+	int const rom_size = 0x080000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 			uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1035,31 +1031,31 @@ void hauntedh_decrypt(running_machine &machine)
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1080,31 +1076,31 @@ void chessc2_decrypt(running_machine &machine)
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1123,32 +1119,32 @@ void klxyj_decrypt(running_machine &machine)
 }
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1168,7 +1164,7 @@ void zhongguo_decrypt(running_machine &machine)
 
 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,
+		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,
@@ -1181,18 +1177,18 @@ static const uint8_t gonefsh2_tab[0x100] = {
 		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,
+		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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1231,12 +1227,12 @@ static const uint8_t sddz_tab[0x100] = {
 
 void sddz_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT;
@@ -1255,32 +1251,32 @@ void sddz_decrypt(running_machine &machine)
 }
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1300,31 +1296,31 @@ void lhzb3_decrypt(running_machine &machine)
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -1344,31 +1340,31 @@ void mgfx_decrypt(running_machine &machine)
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1389,31 +1385,30 @@ void lhzb4_decrypt(running_machine &machine)
 
 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
+	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();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -1450,17 +1445,16 @@ static unsigned char pgm3in1_tab[256] = {
 	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,
+	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);
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("maincpu")->base() + 0x100000);
 
-	int rom_size = 0x400000;
+	int const rom_size = 0x400000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -1502,12 +1496,12 @@ static const uint8_t slqz3_tab[0x100] = {
 
 void slqz3_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x200000;
+	int const rom_size = 0x200000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		// not 100% verified
@@ -1547,13 +1541,12 @@ static const uint8_t fruitpar_tab[0x100] = {
 
 void fruitpar_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
 	// not 100% verified
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -1593,12 +1586,12 @@ static uint8_t amazonia_tab[0x100] = {
 
 void amazonia_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1
@@ -1639,12 +1632,11 @@ static const uint8_t amazoni2_tab[0x100] = {
 
 void amazoni2_decrypt(running_machine &machine)
 {
-	int i;
-	uint16_t *src = (uint16_t *) machine.root_device().memregion("user1")->base();
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(i=0; i<rom_size/2; i++)
+	for (int i = 0; i < rom_size / 2; i++)
 	{
 		uint16_t x = src[i];
 
@@ -1666,11 +1658,12 @@ void amazoni2_decrypt(running_machine &machine)
 
 void pgm_dwpc_decrypt(running_machine &machine)
 {
-	uint16_t *src = (uint16_t *)(machine.root_device().memregion("user1")->base());
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
 
-	int rom_size = 0x80000;
+	int const rom_size = 0x80000;
 
-	for(int i=0; i<rom_size/2; i++) {
+	for (int i = 0; i < rom_size / 2; i++)
+	{
 		uint16_t x = src[i];
 
 		IGS27_CRYPT1_ALT
@@ -1687,3 +1680,97 @@ void pgm_dwpc_decrypt(running_machine &machine)
 		src[i] = x;
 	}
 }
+
+// IGS FOR V100CN 2007 04 18 in the ROM
+
+static const uint8_t mgcs3_tab[0x100] = {
+	0x49, 0x47, 0x53, 0x30, 0x32, 0x30, 0x37, 0x52, 0x44, 0x32, 0x30, 0x35, 0x30, 0x38, 0x30, 0x32, // IGS0207RD2050802
+	0x04, 0x12, 0x46, 0xbb, 0x23, 0x66, 0xae, 0x39, 0x71, 0x44, 0x17, 0xe1, 0x0b, 0xa7, 0x41, 0x7b,
+	0xb3, 0xa2, 0x38, 0xe9, 0xb7, 0x39, 0xe8, 0x2b, 0x22, 0x82, 0xe4, 0x93, 0x22, 0xfc, 0x73, 0x44,
+	0xb9, 0x30, 0xdc, 0xf1, 0xa8, 0x86, 0xf4, 0xd4, 0x98, 0x6a, 0xe5, 0xed, 0x8b, 0x9f, 0x40, 0x7d,
+	0x83, 0xe3, 0x46, 0xc2, 0x71, 0xc4, 0x73, 0xf4, 0x60, 0xc2, 0x4c, 0x80, 0xe2, 0xa6, 0x6b, 0x83,
+	0xbb, 0x22, 0xc8, 0x8a, 0xcd, 0xaa, 0x49, 0x89, 0x43, 0x92, 0x8d, 0x19, 0x02, 0x69, 0xf5, 0xf6,
+	0x4c, 0x94, 0xf5, 0xb8, 0xb7, 0x2f, 0x99, 0xd2, 0x4d, 0x20, 0x5b, 0xc8, 0x05, 0x7d, 0x23, 0xb5,
+	0x62, 0x21, 0x9f, 0xfc, 0x69, 0x89, 0xc6, 0x4e, 0xc9, 0xf4, 0xa8, 0xdd, 0x46, 0xbb, 0x78, 0xde,
+	0x67, 0xee, 0xdc, 0x45, 0x60, 0x30, 0x73, 0xbc, 0x42, 0xd5, 0xa8, 0xe5, 0x61, 0x3a, 0xb6, 0xd1,
+	0x06, 0x64, 0xfc, 0xc1, 0x56, 0xdc, 0x83, 0x1c, 0x82, 0xc9, 0xcd, 0xb0, 0x31, 0x4f, 0xe0, 0x2d,
+	0x2a, 0x28, 0x93, 0xdf, 0x46, 0x82, 0x19, 0xab, 0x96, 0x18, 0xcb, 0x4d, 0xd0, 0x93, 0x3a, 0xd1,
+	0xff, 0x23, 0x75, 0x4f, 0x6b, 0x59, 0x97, 0xea, 0xc6, 0x48, 0x95, 0x0b, 0x9a, 0xdd, 0x46, 0xdb,
+	0xef, 0x7b, 0xb4, 0xff, 0x40, 0xda, 0xa2, 0x98, 0xa0, 0x21, 0x5d, 0x79, 0x29, 0x42, 0xc8, 0xab,
+	0xa5, 0x97, 0xa2, 0x1f, 0x80, 0xba, 0x1b, 0xb2, 0xee, 0xaa, 0x97, 0x66, 0x58, 0x1b, 0xc2, 0xdf,
+	0x0d, 0x1d, 0xd4, 0x1d, 0x26, 0xf2, 0x26, 0x78, 0xba, 0x29, 0xf6, 0xe1, 0x43, 0xff, 0x77, 0x58,
+	0x50, 0xf6, 0x1c, 0xa8, 0x6d, 0xb7, 0x26, 0x6a, 0x50, 0x25, 0x6c, 0x39, 0x45, 0xc3, 0x6b, 0x32
+};
+
+void mgcs3_decrypt(running_machine &machine)
+{
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
+
+	int const rom_size = 0x80000;
+
+	for (int i = 0; i < rom_size / 2; i++)
+	{
+		uint16_t x = src[i];
+
+		// TODO: probably needs work
+		IGS27_CRYPT1
+		IGS27_CRYPT2
+		IGS27_CRYPT3_ALT2
+		IGS27_CRYPT4
+		IGS27_CRYPT5
+		IGS27_CRYPT6
+		IGS27_CRYPT7_ALT
+		IGS27_CRYPT8
+
+		x ^= mgcs3_tab[(i >> 1) & 0xff] << 8;
+
+		src[i] = x;
+	}
+}
+
+// IGS FOR V100CN 02-12-12 in the ROM
+
+static const uint8_t mgzz_tab[0x100] = {
+	0x49, 0x47, 0x53, 0x30, 0x30, 0x38, 0x33, 0x52, 0x44, 0x34, 0x30, 0x32, 0x31, 0x32, 0x31, 0x32, // IGS0083RD4021212
+	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 mgzz_decrypt(running_machine &machine)
+{
+	auto const src = reinterpret_cast<u16 *>(machine.root_device().memregion("user1")->base());
+
+	int const rom_size = 0x80000;
+
+	for (int i = 0; i < rom_size / 2; i++)
+	{
+		int x = src[i];
+
+		// TODO: probably needs work
+		IGS27_CRYPT1_ALT
+		IGS27_CRYPT2
+		IGS27_CRYPT3_ALT2
+		IGS27_CRYPT4
+		IGS27_CRYPT5_ALT
+		IGS27_CRYPT6
+		IGS27_CRYPT7
+		IGS27_CRYPT8
+
+		x ^= mgzz_tab[(i >> 1) & 0xff] << 8;
+
+		src[i] = x;
+	}
+}
diff --git a/src/mame/igs/pgmcrypt.h b/src/mame/igs/pgmcrypt.h
index f5893113a25..32262898c59 100644
--- a/src/mame/igs/pgmcrypt.h
+++ b/src/mame/igs/pgmcrypt.h
@@ -1,6 +1,6 @@
 // license:BSD-3-Clause
-// copyright-holders:David Haywood, ElSemi
-/* IGS 027 Encryptions */
+// copyright-holders: David Haywood, ElSemi
+// IGS 027 Encryptions
 
 void pgm_kov_decrypt(running_machine &machine);
 void pgm_kovsh_decrypt(running_machine &machine);
@@ -39,3 +39,5 @@ void slqz3_decrypt(running_machine &machine);
 void fruitpar_decrypt(running_machine &machine);
 void amazonia_decrypt(running_machine &machine);
 void amazoni2_decrypt(running_machine &machine);
+void mgzz_decrypt(running_machine &machine);
+void mgcs3_decrypt(running_machine &machine);