diff --git a/src/mame/drivers/segas32.cpp b/src/mame/drivers/segas32.cpp
index bccaf6072e2..937ed001e95 100644
--- a/src/mame/drivers/segas32.cpp
+++ b/src/mame/drivers/segas32.cpp
@@ -4601,11 +4601,12 @@ ROM_START( radr )
 	ROM_LOAD16_BYTE( "epr-14106.ic37", 0x100000, 0x080000, CRC(e73c63bf) SHA1(30fb68eaa7d02a232c873bd7751cac7d0fa08e44) )
 	ROM_LOAD16_BYTE( "epr-14107.ic38", 0x100001, 0x080000, CRC(832f797a) SHA1(b0c16ef7bd8d37f592975052ba9da3da70a2fc79) )
 
+	// ic14 and ic20 are suspect, see MT07616. Would be good to get them redumped.
 	ROM_REGION( 0x400000, "mainpcb:soundcpu", 0 ) /* sound CPU */
 	ROM_LOAD_x8( "epr-14108.ic9",  0x000000, 0x020000, CRC(38a99b4d) SHA1(b6455e6b29bfef41c5e0ebe3a8064889b7e5f5fd) )
-	ROM_LOAD_x2( "epr-14109.ic14", 0x100000, 0x080000, CRC(b42e5833) SHA1(da94ce7c1d7a581a1aa6b79b323c67a919918808) )
-	ROM_LOAD_x2( "epr-14110.ic20", 0x200000, 0x080000, CRC(b495e7dc) SHA1(b4143fcee10e0649378fdb1e3f5a0a2c585414ec) )
-	ROM_LOAD_x2( "epr-14237.ic22", 0x300000, 0x080000, CRC(0a4b4b29) SHA1(98447a587f903ba03e17d6a145b7c8bfddf25c4d) )
+	ROM_LOAD_x2( "epr-14109.ic14", 0x100000, 0x080000, CRC(b42e5833) SHA1(da94ce7c1d7a581a1aa6b79b323c67a919918808) ) // BADADDR     x-xxxxxxxxxxxxxxxxx
+	ROM_LOAD_x2( "epr-14110.ic20", 0x200000, 0x080000, CRC(b495e7dc) SHA1(b4143fcee10e0649378fdb1e3f5a0a2c585414ec) ) // BADADDR     x-xxxxxxxxxxxxxxxxx
+	ROM_LOAD_x2( "epr-14237.ic22", 0x300000, 0x080000, CRC(0a4b4b29) SHA1(98447a587f903ba03e17d6a145b7c8bfddf25c4d) ) // 1xxxxxxxxxxxxxxxxxx = 0xFF
 
 	ROM_REGION( 0x100000, "mainpcb:gfx1", 0 ) /* tiles */
 	ROM_LOAD32_BYTE( "epr-14102.ic3",  0x000000, 0x040000, CRC(5626e80f) SHA1(9844817295a8cd8a9b09da6681b0c1fbfe82618e) )