diff --git a/src/mame/drivers/cps1.c b/src/mame/drivers/cps1.c
index 0419402460f..464d9cc7bfb 100644
--- a/src/mame/drivers/cps1.c
+++ b/src/mame/drivers/cps1.c
@@ -3028,9 +3028,9 @@ ROM_END
 ROM_START( forgott1 )
 	ROM_REGION( CODE_SIZE, "main", 0 )
 	ROM_LOAD16_BYTE( "lw_11.12f",      0x00000, 0x20000, CRC(73e920b7) SHA1(2df12fc1a66f488d06b0927db909da81466d7d07) )
-	ROM_LOAD16_BYTE( "lw_15",          0x00001, 0x20000, NO_DUMP )
-	ROM_LOAD16_BYTE( "lw_10",          0x40000, 0x20000, NO_DUMP )
-	ROM_LOAD16_BYTE( "lw_14",          0x40001, 0x20000, NO_DUMP )
+	ROM_LOAD16_BYTE( "lw_15.12h",      0x00001, 0x20000, NO_DUMP )
+	ROM_LOAD16_BYTE( "lw_10.13f",      0x40000, 0x20000, NO_DUMP )
+	ROM_LOAD16_BYTE( "lw_14.13h",      0x40001, 0x20000, NO_DUMP )
 	ROM_LOAD16_WORD_SWAP( "lw-07.10g", 0x80000, 0x80000, CRC(fd252a26) SHA1(5cfb097984912a5167a8c7ec4c2e119b642f9970) )	// == lw-07.13e
 
 	ROM_REGION( 0x400000, "gfx", 0 )
diff --git a/src/mame/video/cps1.c b/src/mame/video/cps1.c
index 35118bd177e..003bfb2271b 100644
--- a/src/mame/video/cps1.c
+++ b/src/mame/video/cps1.c
@@ -20,9 +20,9 @@ Known A-board revisions:
 
 NAME                                        Year  B-board #      B-board PALs      C-board #         CPS-B #           C-board PALs
 ------------------------------------------- ----  --------  ---------------------  ---------  -----------------------  -------------
-Forgotten Worlds / Lost Worlds              1988  88618B-2  LWCHR            LWIO  None       CPS-B-01  DL-0411-10001  None
-  (alt B-board revision)                          88621B-2  LW621            LWIO  ?
-Ghouls 'n Ghosts (World / US)               1988  88620-B-2 DM620            LWIO  None       CPS-B-01  DL-0411-10001  None
+Forgotten Worlds / Lost Worlds              1988  88618B-2  LWCHR            LWIO  None       CPS-B-01  DL-0411-10001  N/A
+  (alt B-board revision)                          88621B-2  LW621            LWIO  None       CPS-B-01  DL-0411-10001  N/A
+Ghouls 'n Ghosts (World / US)               1988  88620-B-2 DM620            LWIO  None       CPS-B-01  DL-0411-10001  N/A
   (alt B-board revision - Japan)                  88622B-2  DM22A            LWIO  88622-C-1  CPS-B-01  DL-0411-10001  None
   (alt B-board revision - Japan)                  91634B-2  DAM63B    BPRG1  IOB1  92631C-6   CPS-B-21  DL-0921-10014  C632  IOC1
 Strider                                     1989  89624B-2  ST24M1           LWIO  88622-C-1  CPS-B-01  DL-0411-10001  None