diff --git a/src/mame/drivers/shootout.cpp b/src/mame/drivers/shootout.cpp
index b9c539f78cc..5684f5f0956 100644
--- a/src/mame/drivers/shootout.cpp
+++ b/src/mame/drivers/shootout.cpp
@@ -13,7 +13,7 @@
     arm?
 
     Shoot Out (Korean bootleg) is based on the earlier DE-0203 board but
-    strangely features the same encryption as used on the DE-0219 board.  It
+    strangely features the same encryption as used on the DE-0219 board. It
     also has some edited graphics.
 
     Driver by:
@@ -24,6 +24,8 @@
     TODO:
 
     - Lots of unmapped memory reads
+	- Does the korean bootleg really have the DECO 222 CPU? I think it should use the shootclr.003 prom to decrypt the opcodes.
+	  Something like -> rom [addr] = (rom [addr] & 0x0F) | proms [rom [addr] >> 4]]);
 
 *******************************************************************************/
 
@@ -101,7 +103,7 @@ static ADDRESS_MAP_START( shootout_map, AS_PROGRAM, 8, shootout_state )
 	AM_RANGE(0x2000, 0x27ff) AM_RAM_WRITE(textram_w) AM_SHARE("textram")
 	AM_RANGE(0x2800, 0x2fff) AM_RAM_WRITE(videoram_w) AM_SHARE("videoram")
 	AM_RANGE(0x4000, 0x7fff) AM_ROMBANK("bank1")
-	AM_RANGE(0x8000, 0xffff) AM_ROM
+	AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION("maincpu", 0x0000)
 ADDRESS_MAP_END
 
 static ADDRESS_MAP_START( shootouj_map, AS_PROGRAM, 8, shootout_state )
@@ -116,7 +118,7 @@ static ADDRESS_MAP_START( shootouj_map, AS_PROGRAM, 8, shootout_state )
 	AM_RANGE(0x3000, 0x37ff) AM_RAM_WRITE(textram_w) AM_SHARE("textram")
 	AM_RANGE(0x3800, 0x3fff) AM_RAM_WRITE(videoram_w) AM_SHARE("videoram")
 	AM_RANGE(0x4000, 0x7fff) AM_ROMBANK("bank1")
-	AM_RANGE(0x8000, 0xffff) AM_ROM
+	AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION("maincpu", 0x0000)
 ADDRESS_MAP_END
 
 /*******************************************************************************/
@@ -126,7 +128,7 @@ static ADDRESS_MAP_START( shootout_sound_map, AS_PROGRAM, 8, shootout_state )
 	AM_RANGE(0x0000, 0x07ff) AM_RAM
 	AM_RANGE(0x4000, 0x4001) AM_DEVREADWRITE("ymsnd", ym2203_device, read, write)
 	AM_RANGE(0xa000, 0xa000) AM_READ(sound_cpu_command_r)
-	AM_RANGE(0xc000, 0xffff) AM_ROM
+	AM_RANGE(0xc000, 0xffff) AM_ROM AM_REGION("audiocpu", 0x0000)
 	AM_RANGE(0xd000, 0xd000) AM_WRITENOP // Unknown, NOT irq/nmi mask (Always 0x80 ???)
 ADDRESS_MAP_END
 
@@ -334,14 +336,13 @@ MACHINE_CONFIG_END
 
 
 ROM_START( shootout )
-	ROM_REGION( 2*0x20000, "maincpu", 0 )   /* 128k for code + 128k for decrypted opcodes */
-	ROM_LOAD( "cu00.b1",        0x08000, 0x8000, CRC(090edeb6) SHA1(ab849d123dacf3947b1ebd29b70a20e066911a60) ) /* opcodes encrypted */
-	/* banked at 0x4000-0x8000 */
-	ROM_LOAD( "cu02.c3",        0x10000, 0x8000, CRC(2a913730) SHA1(584488278d58c4d34a2eebeaf39518f87cf5eecd) ) /* opcodes encrypted */
-	ROM_LOAD( "cu01.c1",        0x18000, 0x4000, CRC(8843c3ae) SHA1(c58ed4acac566f890cadf62bcbcced07a59243fc) ) /* opcodes encrypted */
+	ROM_REGION( 2 * 0x14000, "maincpu", 0 ) // 80k for code + 80k for decrypted opcodes
+	ROM_LOAD( "cu00.b1",        0x00000, 0x8000, CRC(090edeb6) SHA1(ab849d123dacf3947b1ebd29b70a20e066911a60) ) /* opcodes encrypted */
+	ROM_LOAD( "cu02.c3",        0x08000, 0x8000, CRC(2a913730) SHA1(584488278d58c4d34a2eebeaf39518f87cf5eecd) ) /* opcodes encrypted */
+	ROM_LOAD( "cu01.c1",        0x10000, 0x4000, CRC(8843c3ae) SHA1(c58ed4acac566f890cadf62bcbcced07a59243fc) ) /* opcodes encrypted */
 
-	ROM_REGION( 0x10000, "audiocpu", 0 )
-	ROM_LOAD( "cu09.j1",        0x0c000, 0x4000, CRC(c4cbd558) SHA1(0e940ae99febc1161e5f35550aa75afca88cb5e9) ) /* Sound CPU */
+	ROM_REGION( 0x4000, "audiocpu", 0 )
+	ROM_LOAD( "cu09.j1",        0x00000, 0x4000, CRC(c4cbd558) SHA1(0e940ae99febc1161e5f35550aa75afca88cb5e9) ) /* Sound CPU */
 
 	ROM_REGION( 0x04000, "gfx1", 0 )
 	ROM_LOAD( "cu11.h19",       0x00000, 0x4000, CRC(eff00460) SHA1(15daaa3d3125a981a26f31d43283faa5be26e96b) ) /* foreground characters */
@@ -366,10 +367,10 @@ ROM_START( shootout )
 ROM_END
 
 ROM_START( shootoutj )
-	ROM_REGION( 0x20000, "maincpu", 0 ) /* 128k for code  */
-	ROM_LOAD( "cg02.bin",    0x08000, 0x8000, CRC(8fc5d632) SHA1(809ac4eba09972229fe741c96fa8036d7139b6a8) )
-	ROM_LOAD( "cg00.bin",    0x10000, 0x8000, CRC(ef6ced1e) SHA1(feea508c7a60fc6cde1efee52cba628accd26028) )
-	ROM_LOAD( "cg01.bin",    0x18000, 0x4000, CRC(74cf11ca) SHA1(59edbc4633cd560e7b928b33e4c42d0125332a1b) )
+	ROM_REGION( 0x14000, "maincpu", 0 ) // 80k for code
+	ROM_LOAD( "cg02.bin",    0x00000, 0x8000, CRC(8fc5d632) SHA1(809ac4eba09972229fe741c96fa8036d7139b6a8) )
+	ROM_LOAD( "cg00.bin",    0x08000, 0x8000, CRC(ef6ced1e) SHA1(feea508c7a60fc6cde1efee52cba628accd26028) )
+	ROM_LOAD( "cg01.bin",    0x10000, 0x4000, CRC(74cf11ca) SHA1(59edbc4633cd560e7b928b33e4c42d0125332a1b) )
 
 	ROM_REGION( 0x04000, "gfx1", 0 )
 	ROM_LOAD( "cu11.h19",       0x00000, 0x4000, CRC(eff00460) SHA1(15daaa3d3125a981a26f31d43283faa5be26e96b) ) /* foreground characters */
@@ -391,10 +392,10 @@ ROM_START( shootoutj )
 ROM_END
 
 ROM_START( shootoutb )
-	ROM_REGION( 2*0x20000, "maincpu", 0 )   /* 128k for code + 128k for decrypted opcodes */
-	ROM_LOAD( "shootout.006", 0x08000, 0x8000, CRC(2c054888) SHA1(cb0de2f7d743506789626304e6bcbbc292fbe8bc) )
-	ROM_LOAD( "shootout.008", 0x10000, 0x8000, CRC(9651b656) SHA1(e90eddf2833ef36fa73b7b8d81d28443d2f60220) )
-	ROM_LOAD( "cg01.bin",     0x18000, 0x4000, CRC(74cf11ca) SHA1(59edbc4633cd560e7b928b33e4c42d0125332a1b) )
+	ROM_REGION( 2 * 0x14000, "maincpu", 0 ) // 80k for code + 80k for decrypted opcodes
+	ROM_LOAD( "shootout.006", 0x00000, 0x8000, CRC(2c054888) SHA1(cb0de2f7d743506789626304e6bcbbc292fbe8bc) )
+	ROM_LOAD( "shootout.008", 0x08000, 0x8000, CRC(9651b656) SHA1(e90eddf2833ef36fa73b7b8d81d28443d2f60220) )
+	ROM_LOAD( "cg01.bin",     0x10000, 0x4000, CRC(74cf11ca) SHA1(59edbc4633cd560e7b928b33e4c42d0125332a1b) )
 
 	ROM_REGION( 0x04000, "gfx1", 0 )
 	ROM_LOAD( "cu11.h19",       0x00000, 0x4000, CRC(eff00460) SHA1(15daaa3d3125a981a26f31d43283faa5be26e96b) ) /* foreground characters */
@@ -419,7 +420,7 @@ ROM_END
 
 DRIVER_INIT_MEMBER(shootout_state,shootout)
 {
-	membank("bank1")->configure_entries(0, 16, memregion("maincpu")->base() + 0x10000, 0x4000);
+	membank("bank1")->configure_entries(0, 16, memregion("maincpu")->base() + 0x8000, 0x4000);
 }