diff --git a/src/mame/drivers/segas16b.c b/src/mame/drivers/segas16b.c
index 09a78af43ed..0c743cb9e5e 100644
--- a/src/mame/drivers/segas16b.c
+++ b/src/mame/drivers/segas16b.c
@@ -3554,6 +3554,7 @@ ROM_END
     Altered Beast, Sega System 16B
     CPU: 68000 + i8751 (317-0078)
     ROM Board: 171-5521
+    Sega ID# for ROM board: 834-6661-10
 */
 ROM_START( altbeast )
 	ROM_REGION( 0x040000, "maincpu", 0 ) /* 68000 code */
@@ -3813,14 +3814,14 @@ ROM_START( altbeastj1 )
 	ROM_LOAD( "opr-11676.a16", 0x40000, 0x20000, CRC(0c04acac) SHA1(87fe2a0dd9913f9550e9b4cbc7e7465b61640e07) )
 
 	ROM_REGION16_BE( 0x100000, "gfx2", 0 ) /* sprites */
-	ROM_LOAD16_BYTE( "epr-11677.b1", 0x00001, 0x20000, CRC(a01425cd) SHA1(72be5ec29e476601f9bf6aaedef9b73cedeb42f0) )
-	ROM_LOAD16_BYTE( "epr-11681.b5", 0x00000, 0x20000, CRC(d9e03363) SHA1(995a7c6a8f0c61468b57a3bb407461a2a3ae8adc) )
-	ROM_LOAD16_BYTE( "epr-11678.b2", 0x40001, 0x20000, CRC(17a9fc53) SHA1(85a9a605742ae5aab86db37189b9ee4d54c70e56) )
-	ROM_LOAD16_BYTE( "epr-11682.b6", 0x40000, 0x20000, CRC(e3f77c5e) SHA1(6b3cb7918ab0c7c97a51cc5ea19ced3374ff3914) )
-	ROM_LOAD16_BYTE( "epr-11679.b3", 0x80001, 0x20000, CRC(14dcc245) SHA1(1ca1b6e0f2b7bedad2a8ab70f52da8c54d40d3cf) )
-	ROM_LOAD16_BYTE( "epr-11683.b7", 0x80000, 0x20000, CRC(f9a60f06) SHA1(0cffcfdb02733feaa869198b7e668c58b47c321a) )
-	ROM_LOAD16_BYTE( "epr-11680.b4", 0xc0001, 0x20000, CRC(f43dcdec) SHA1(2941500cf33afca487f19f2329033d5d17aad826) )
-	ROM_LOAD16_BYTE( "epr-11684.b8", 0xc0000, 0x20000, CRC(b20c0edb) SHA1(6c8694d05e3adac37c9015037ab800233371db36) )
+	ROM_LOAD16_BYTE( "epr-11677.b1",  0x00001, 0x20000, CRC(a01425cd) SHA1(72be5ec29e476601f9bf6aaedef9b73cedeb42f0) )
+	ROM_LOAD16_BYTE( "epr-11681.b5",  0x00000, 0x20000, CRC(d9e03363) SHA1(995a7c6a8f0c61468b57a3bb407461a2a3ae8adc) )
+	ROM_LOAD16_BYTE( "epr-11678.b2",  0x40001, 0x20000, CRC(17a9fc53) SHA1(85a9a605742ae5aab86db37189b9ee4d54c70e56) )
+	ROM_LOAD16_BYTE( "epr-11682.b6",  0x40000, 0x20000, CRC(e3f77c5e) SHA1(6b3cb7918ab0c7c97a51cc5ea19ced3374ff3914) )
+	ROM_LOAD16_BYTE( "epr-11679.b3",  0x80001, 0x20000, CRC(14dcc245) SHA1(1ca1b6e0f2b7bedad2a8ab70f52da8c54d40d3cf) )
+	ROM_LOAD16_BYTE( "epr-11683.b7",  0x80000, 0x20000, CRC(f9a60f06) SHA1(0cffcfdb02733feaa869198b7e668c58b47c321a) )
+	ROM_LOAD16_BYTE( "epr-11680.b4",  0xc0001, 0x20000, CRC(f43dcdec) SHA1(2941500cf33afca487f19f2329033d5d17aad826) )
+	ROM_LOAD16_BYTE( "epr-11684.b8",  0xc0000, 0x20000, CRC(b20c0edb) SHA1(6c8694d05e3adac37c9015037ab800233371db36) )
 
 	ROM_REGION( 0x50000, "soundcpu", 0 ) /* sound CPU */
 	ROM_LOAD( "epr-11671.a10", 0x00000, 0x08000, CRC(2b71343b) SHA1(8a657f787de2b9d5161ed2c109642a148348af09) )