diff --git a/src/mame/drivers/funkyjet.c b/src/mame/drivers/funkyjet.c
index f7dad5df9bb..d72c28dce09 100644
--- a/src/mame/drivers/funkyjet.c
+++ b/src/mame/drivers/funkyjet.c
@@ -364,8 +364,27 @@ MACHINE_CONFIG_END
 
 ROM_START( funkyjet )
 	ROM_REGION( 0x80000, "maincpu", 0 ) /* 68000 code */
-	ROM_LOAD16_BYTE( "jk00.12f", 0x00000, 0x40000, CRC(712089c1) SHA1(84167c90303a228107f55596e2ff8b9f111d1bc2) )
-	ROM_LOAD16_BYTE( "jk01.13f", 0x00001, 0x40000, CRC(be3920d7) SHA1(6627956d148681bc49991c544a09b07271ea4c7f) )
+	ROM_LOAD16_BYTE( "jk00-1.12f", 0x00000, 0x40000, CRC(ce61579d) SHA1(fe755b62c822c996d479cafa6fa7ac7724af6560) )
+	ROM_LOAD16_BYTE( "jk01-1.13f", 0x00001, 0x40000, CRC(274d04be) SHA1(a14ec81e40504d3c7deb28114b85b9bbb76a51f5) )
+
+	ROM_REGION( 0x10000, "audiocpu", 0 )    /* Sound CPU */
+	ROM_LOAD( "jk02.16f",    0x00000, 0x10000, CRC(748c0bd8) SHA1(35910e6a4c4f198fb76bde0f5b053e2c66cfa0ff) )
+
+	ROM_REGION( 0x080000, "gfx1", 0 )
+	ROM_LOAD( "mat02", 0x000000, 0x80000, CRC(e4b94c7e) SHA1(7b6ddd0bd388c8d32277fce4b3abb102724bc7d1) ) /* Encrypted chars */
+
+	ROM_REGION( 0x100000, "gfx2", 0 )
+	ROM_LOAD( "mat01", 0x000000, 0x80000, CRC(24093a8d) SHA1(71f76ddd8a4b6e05ceb2fff4e20b6edb5e011e79) ) /* sprites */
+	ROM_LOAD( "mat00", 0x080000, 0x80000, CRC(fbda0228) SHA1(815d49898d02e699393e370209181f2ca8301949) )
+
+	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
+	ROM_LOAD( "jk03.15h",    0x00000, 0x20000, CRC(69a0eaf7) SHA1(05038e82ee03106625f05082fe9912e16be181ee) )
+ROM_END
+
+ROM_START( funkyjeta )
+	ROM_REGION( 0x80000, "maincpu", 0 ) /* 68000 code */
+	ROM_LOAD16_BYTE( "jk00.12f", 0x00000, 0x40000, CRC(712089c1) SHA1(84167c90303a228107f55596e2ff8b9f111d1bc2) ) /* Unverified revision, could be JK00-0 or JK00-2 */
+	ROM_LOAD16_BYTE( "jk01.13f", 0x00001, 0x40000, CRC(be3920d7) SHA1(6627956d148681bc49991c544a09b07271ea4c7f) ) /* Unverified revision, could be JK01-0 or JK01-2 */
 
 	ROM_REGION( 0x10000, "audiocpu", 0 )    /* Sound CPU */
 	ROM_LOAD( "jk02.16f",    0x00000, 0x10000, CRC(748c0bd8) SHA1(35910e6a4c4f198fb76bde0f5b053e2c66cfa0ff) )
@@ -387,7 +406,7 @@ ROM_START( funkyjetj )
 	ROM_LOAD16_BYTE( "jh01-2.13f", 0x00001, 0x40000, CRC(21280220) SHA1(b365b6c8aa778e21a14b2813e93b9c9d02e14995) )
 
 	ROM_REGION( 0x10000, "audiocpu", 0 )    /* Sound CPU */
-	ROM_LOAD( "jk02.16f",    0x00000, 0x10000, CRC(748c0bd8) SHA1(35910e6a4c4f198fb76bde0f5b053e2c66cfa0ff) )
+	ROM_LOAD( "jh02.16f",    0x00000, 0x10000, CRC(748c0bd8) SHA1(35910e6a4c4f198fb76bde0f5b053e2c66cfa0ff) ) /* same as jk02.16f from world set */
 
 	ROM_REGION( 0x080000, "gfx1", 0 )
 	ROM_LOAD( "mat02", 0x000000, 0x80000, CRC(e4b94c7e) SHA1(7b6ddd0bd388c8d32277fce4b3abb102724bc7d1) ) /* Encrypted chars */
@@ -397,7 +416,7 @@ ROM_START( funkyjetj )
 	ROM_LOAD( "mat00", 0x080000, 0x80000, CRC(fbda0228) SHA1(815d49898d02e699393e370209181f2ca8301949) )
 
 	ROM_REGION( 0x40000, "oki", 0 ) /* ADPCM samples */
-	ROM_LOAD( "jk03.15h",    0x00000, 0x20000, CRC(69a0eaf7) SHA1(05038e82ee03106625f05082fe9912e16be181ee) )
+	ROM_LOAD( "jh03.15h",    0x00000, 0x20000, CRC(69a0eaf7) SHA1(05038e82ee03106625f05082fe9912e16be181ee) ) /* same as jk03.15h from world set */
 ROM_END
 
 ROM_START( sotsugyo )
@@ -426,6 +445,7 @@ DRIVER_INIT_MEMBER(funkyjet_state,funkyjet)
 
 /******************************************************************************/
 
-GAME( 1992, funkyjet, 0,        funkyjet, funkyjet, funkyjet_state, funkyjet, ROT0, "Data East (Mitchell license)", "Funky Jet (World)", GAME_SUPPORTS_SAVE )
-GAME( 1992, funkyjetj,funkyjet, funkyjet, funkyjetj, funkyjet_state,funkyjet, ROT0, "Data East Corporation", "Funky Jet (Japan)", GAME_SUPPORTS_SAVE )
-GAME( 1995, sotsugyo, 0,        funkyjet, sotsugyo, funkyjet_state, funkyjet, ROT0, "Mitchell (Atlus license)", "Sotsugyo Shousho", GAME_SUPPORTS_SAVE )
+GAME( 1992, funkyjet,  0,        funkyjet, funkyjet,  funkyjet_state, funkyjet, ROT0, "Data East (Mitchell license)", "Funky Jet (World, rev 1)", GAME_SUPPORTS_SAVE )
+GAME( 1992, funkyjeta, funkyjet, funkyjet, funkyjet,  funkyjet_state, funkyjet, ROT0, "Data East (Mitchell license)", "Funky Jet (World)", GAME_SUPPORTS_SAVE )
+GAME( 1992, funkyjetj, funkyjet, funkyjet, funkyjetj, funkyjet_state, funkyjet, ROT0, "Data East Corporation", "Funky Jet (Japan, rev 2)", GAME_SUPPORTS_SAVE )
+GAME( 1995, sotsugyo,  0,        funkyjet, sotsugyo,  funkyjet_state, funkyjet, ROT0, "Mitchell (Atlus license)", "Sotsugyo Shousho", GAME_SUPPORTS_SAVE )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index cfcc71e5f1b..5f3a59e9fd3 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -5898,8 +5898,9 @@ dragngunj       // MAR (c) 1992 Data East Corporation (Japan)
 wizdfire        // MAS (c) 1992 Data East Corporation (Over Sea)
 wizdfireu       // MAS (c) 1992 Data East Corporation (US)
 darkseal2       // MAS (c) 1992 Data East Corporation (Japan)
-funkyjet        // MAT (c) 1992 Mitchell
-funkyjetj       // MAT (c) 1992 Mitchell
+funkyjet        // MAT (c) 1992 Data East (Mitchell license) (World, Rev 1)
+funkyjeta       // MAT (c) 1992 Data East (Mitchell license) (World) - Rev unverified
+funkyjetj       // MAT (c) 1992 Data East (Mitchell license) (Japan, Rev 2)
 				// MAU ??
 nitrobal        // MAV (c) 1992 Data East Corporation (US)
 gunball         // MAV (c) 1992 Data East Corporation (Japan)