diff --git a/src/mame/drivers/sauro.cpp b/src/mame/drivers/sauro.cpp
index efd51512311..16ef54e68b3 100644
--- a/src/mame/drivers/sauro.cpp
+++ b/src/mame/drivers/sauro.cpp
@@ -616,6 +616,21 @@ ROM_START( saurorr ) // all roms have original Tecfri stickers
 ROM_END
 
 
+/*
+Sauro (bootleg)
+
+CPU  : Z80
+Sound: Z80, YM3526, YM3014
+RAM  : 2016 (x4), 6116 (x5)
+Xtal : 20.000MHz, 8.000MHz
+DIPs : 8 position (x2)
+Other: ULN2003
+       unpopulated position for SP0256-AL
+
+Only ROMs 01, 02 & 03 are different to existing archive.
+Color PROMs match existing archive. One extra PROM was found near ROMs 6 & 7 (sauropr4.16h)
+*/
+
 ROM_START( saurob )
 	ROM_REGION( 0x10000, "maincpu", 0 )
 	ROM_LOAD( "sauro02.7c",      0x00000, 0x8000, CRC(72026b9a) SHA1(538f6bffab5cb0f7609a5afaab4d839baf26a1a7) )
@@ -625,27 +640,26 @@ ROM_START( saurob )
 	ROM_LOAD( "sauro03.16e",     0x00000, 0x8000, CRC(a30b60fc) SHA1(48ea586a333e42852a6c9a5df48b2f2ccace6d36) )
 
 	ROM_REGION( 0x10000, "gfx1", 0 )
-	ROM_LOAD( "sauro-6.bin",     0x00000, 0x8000, CRC(4b77cb0f) SHA1(7b9cb2dca561d81390106c1a5c0533dcecaf6f1a) )
-	ROM_LOAD( "sauro-7.bin",     0x08000, 0x8000, CRC(187da060) SHA1(1df156e58379bb39acade02aabab6ff1cb7cc288) )
+	ROM_LOAD( "sauro-6.bin",     0x00000, 0x8000, CRC(4b77cb0f) SHA1(7b9cb2dca561d81390106c1a5c0533dcecaf6f1a) ) // sauro06.16g
+	ROM_LOAD( "sauro-7.bin",     0x08000, 0x8000, CRC(187da060) SHA1(1df156e58379bb39acade02aabab6ff1cb7cc288) ) // sauro07.18g
 
 	ROM_REGION( 0x10000, "gfx2", 0 )
-	ROM_LOAD( "sauro-4.bin",     0x00000, 0x8000, CRC(9b617cda) SHA1(ce26b84ad5ecd6185ae218520e9972645bbf09ad) )
-	ROM_LOAD( "sauro-5.bin",     0x08000, 0x8000, CRC(a6e2640d) SHA1(346ffcf62e27ce8134f4e5e0dbcf11f110e19e04) )
+	ROM_LOAD( "sauro-4.bin",     0x00000, 0x8000, CRC(9b617cda) SHA1(ce26b84ad5ecd6185ae218520e9972645bbf09ad) ) // sauro04.7g
+	ROM_LOAD( "sauro-5.bin",     0x08000, 0x8000, CRC(a6e2640d) SHA1(346ffcf62e27ce8134f4e5e0dbcf11f110e19e04) ) // sauro05.8g
 
 	ROM_REGION( 0x20000, "gfx3", 0 )
-	ROM_LOAD( "sauro-8.bin",     0x00000, 0x8000, CRC(e08b5d5e) SHA1(eaaeaa08b19c034ab2a2140f887edffca5f441b9) )
-	ROM_LOAD( "sauro-9.bin",     0x08000, 0x8000, CRC(7c707195) SHA1(0529f6808b0cec3e12ca51bee189841d21577786) )
-	ROM_LOAD( "sauro-10.bin",    0x10000, 0x8000, CRC(c93380d1) SHA1(fc9655cc94c2d2058f83eb341be7e7856a08194f) )
-	ROM_LOAD( "sauro-11.bin",    0x18000, 0x8000, CRC(f47982a8) SHA1(cbaeac272c015d9439f151cfb3449082f11a57a1) )
+	ROM_LOAD( "sauro-8.bin",     0x00000, 0x8000, CRC(e08b5d5e) SHA1(eaaeaa08b19c034ab2a2140f887edffca5f441b9) ) // sauro08.9j
+	ROM_LOAD( "sauro-9.bin",     0x08000, 0x8000, CRC(7c707195) SHA1(0529f6808b0cec3e12ca51bee189841d21577786) ) // sauro09.11j 
+	ROM_LOAD( "sauro-10.bin",    0x10000, 0x8000, CRC(c93380d1) SHA1(fc9655cc94c2d2058f83eb341be7e7856a08194f) ) // sauro10.12j
+	ROM_LOAD( "sauro-11.bin",    0x18000, 0x8000, CRC(f47982a8) SHA1(cbaeac272c015d9439f151cfb3449082f11a57a1) ) // sauro11.14j
 
 	ROM_REGION( 0x0c00, "proms", 0 )
 	ROM_LOAD( "82s137-3.bin",    0x0000, 0x0400, CRC(d52c4cd0) SHA1(27d6126b46616c06b55d8018c97f6c3d7805ae9e) )  /* Red component */
 	ROM_LOAD( "82s137-2.bin",    0x0400, 0x0400, CRC(c3e96d5d) SHA1(3f6f21526a4357e4a9a9d56a6f4ef5911af2d120) )  /* Green component */
 	ROM_LOAD( "82s137-1.bin",    0x0800, 0x0400, CRC(bdfcf00c) SHA1(9faf4d7f8959b64faa535c9945eec59c774a3760) )  /* Blue component */
 
-	ROM_REGION( 0x10000, "speech", 0 )
-	/* SP0256 mask rom */
-	ROM_LOAD( "sp0256-al2.bin",   0x1000, 0x0800, CRC(b504ac15) SHA1(e60fcb5fa16ff3f3b69d36c7a6e955744d3feafc) )
+        ROM_REGION( 0x0200, "user1", 0 ) // Unknown PROM was found near ROMs 6 & 7
+	ROM_LOAD( "sauropr4.16h",    0x0000, 0x0200, CRC(5261bc11) SHA1(1cc7a9a7376e65f4587b75ef9382049458656372) )
 ROM_END