diff --git a/src/mame/drivers/zn.cpp b/src/mame/drivers/zn.cpp
index af028f14eae..4ca1287137a 100644
--- a/src/mame/drivers/zn.cpp
+++ b/src/mame/drivers/zn.cpp
@@ -4789,9 +4789,41 @@ ROM_START( acpsx )
 	ROM_REGION32_LE( 0x2000000, "roms", ROMREGION_ERASE00 )
 ROM_END
 
+
 ROM_START( nbajamex )
 	AC_BIOS
 
+	ROM_REGION32_LE( 0x2000000, "bankedroms", 0 )
+	ROM_LOAD16_BYTE( "odd.u36",  0x0000001, 0x100000, CRC(533041e7) SHA1(691a11a031e61d892db74c4c29b6a999917c341b) )
+	ROM_LOAD16_BYTE( "even.u35", 0x0000000, 0x100000, CRC(63d7f15d) SHA1(23525e875d0e61763301e95f70964bc9df3a2624) )
+	ROM_LOAD16_BYTE( "nbax0o.u28",   0x0200001, 0x200000, CRC(be13c5af) SHA1(eee5c9d985384ecfe4f00fae27d66fbefc15b28e) )
+	ROM_LOAD16_BYTE( "nbax0e.u41",   0x0200000, 0x200000, CRC(077f4355) SHA1(63c52bb82943b52bb0906d114acd5ea8643068b6) )
+	ROM_LOAD16_BYTE( "nbax1o.u29",   0x0600001, 0x200000, CRC(3650e85b) SHA1(a36bfa235c8e3bb516e178f54d3c5e3955c7e918) )
+	ROM_LOAD16_BYTE( "nbax1e.u42",   0x0600000, 0x200000, CRC(f1212cf9) SHA1(b2f80af3ec4d559056e86f695d89d1d32b500f50) )
+	ROM_LOAD16_BYTE( "nbax2o.u30",   0x0a00001, 0x200000, CRC(ccbb6125) SHA1(998eda99182b984f88f5fc58095cb35bf232a26b) )
+	ROM_LOAD16_BYTE( "nbax2e.u43",   0x0a00000, 0x200000, CRC(c20ab628) SHA1(7ffe5005e1913da56770452ae2f907a4a270ab24) )
+	ROM_LOAD16_BYTE( "nbax3o.u31",   0x0e00001, 0x200000, CRC(d5238edf) SHA1(d1eb30ec65dd6cfa8cbb2b36af3a83820d1de99a) )
+	ROM_LOAD16_BYTE( "nbax3e.u44",   0x0e00000, 0x200000, CRC(07ba00a3) SHA1(c14bffd35ee715b07d6065b454b0443438ab6536) )
+	ROM_LOAD16_BYTE( "nbax4o.u3",    0x1200001, 0x200000, CRC(1cf16a34) SHA1(a7e984a2db846854f1c4a9a2fdefd0d17ce3108c) )
+	ROM_LOAD16_BYTE( "nbax4e.u17",   0x1200000, 0x200000, CRC(b5977765) SHA1(08acdfe413a5a9182ca117f44b7acac9dac9ecea) )
+	ROM_LOAD16_BYTE( "nbax5o.u4",    0x1600001, 0x200000, CRC(5272754b) SHA1(c35ba5377eb812991e4bf0d954a34af90b986341) )
+	ROM_LOAD16_BYTE( "nbax5e.u18",   0x1600000, 0x200000, CRC(0eb917da) SHA1(d6c8991ba7cd492668757658ee64078d0e82b596) )
+	ROM_LOAD16_BYTE( "nbax6o.u5",    0x1a00001, 0x200000, CRC(b1dfb42e) SHA1(fb9627e228bf2a744842eb44afbca4a6232cadb2) )
+	ROM_LOAD16_BYTE( "nbax6e.u19",   0x1a00000, 0x200000, CRC(6f17d8c1) SHA1(22cf263efb64cf62030e02b641c485debe75944d) )
+
+	ROM_REGION( 0x0a0000, "cpu1", 0 ) /* 512k for the audio CPU, ADSP-2181 (+banks) */
+	ROM_LOAD( "360snda1.u52", 0x000000, 0x08000, CRC(36d8a628) SHA1(944a01c9128f5e90c7dba3557a3ecb2c5ca90831) )
+	ROM_CONTINUE(             0x010000, 0x78000 )
+
+	ROM_REGION( 0x400000, "unknown", 0 )
+	ROM_LOAD( "sound0.u48",   0x000000, 0x200000, CRC(38873b67) SHA1(b2f8d32270ae604c099a1b9b71d2e06468c7d4a9) )
+	ROM_LOAD( "sound1.u49",   0x200000, 0x200000, CRC(57014589) SHA1(d360ff1c52424bd91a5a8d1a2a9c10bf7abb0602) )
+ROM_END
+
+
+ROM_START( nbajamexa )
+	AC_BIOS
+
 	ROM_REGION32_LE( 0x2000000, "bankedroms", 0 )
 	ROM_LOAD16_BYTE( "360mpa1o.u36", 0x0000001, 0x100000, CRC(c433e827) SHA1(1d2a5a6990a1b1864e63ce3ba7306d48ebbd4775) )
 	ROM_LOAD16_BYTE( "360mpa1e.u35", 0x0000000, 0x100000, CRC(d8f5b2f7) SHA1(e38609d314721b8b612e047406e2888395917b0d) )
@@ -4945,7 +4977,8 @@ GAME( 1996, primrag2, atpsx,    coh1000w, primrag2, driver_device, 0, ROT0, "Ata
 /* it in every zip file */
 GAME( 1995, acpsx,    0,        coh1000a, zn,     driver_device, 0, ROT0, "Acclaim", "Acclaim PSX", MACHINE_IS_BIOS_ROOT )
 
-GAME( 1996, nbajamex, acpsx,    nbajamex, zn,     driver_device, 0, ROT0, "Acclaim", "NBA Jam Extreme", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND )
+GAME( 1996, nbajamex, acpsx,    nbajamex, zn,     driver_device, 0, ROT0, "Acclaim", "NBA Jam Extreme (ver. 1.10I)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND )
+GAME( 1996, nbajamexa,nbajamex, nbajamex, zn,     driver_device, 0, ROT0, "Acclaim", "NBA Jam Extreme (ver. 1.04)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND )
 GAME( 1996, jdredd,   acpsx,    jdredd,   jdredd, driver_device, 0, ROT0, "Acclaim", "Judge Dredd (Rev C Dec. 17 1997)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND )
 GAME( 1996, jdreddb,  jdredd,   jdredd,   jdredd, driver_device, 0, ROT0, "Acclaim", "Judge Dredd (Rev B Nov. 26 1997)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND )
 
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index e800175214a..9d355de415a 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -37609,6 +37609,7 @@ mfjump                          // Monster Farm Jump (JAPAN)
 mgcldate                        // Magical Date (JAPAN Ver 2.02J)
 mgcldtex                        // Magical Date EX (JAPAN Ver 2.01J)
 nbajamex                        // NBA Jam Extreme
+nbajamexa						//
 plsmaswd                        // Plasma Sword (USA 980316)
 plsmaswda                       // Plasma Sword (ASIA 980316)
 primrag2                        // Primal Rage 2