diff --git a/src/mame/drivers/koikoi.c b/src/mame/drivers/koikoi.c
index 67f82ce0b4b..6d69726f892 100644
--- a/src/mame/drivers/koikoi.c
+++ b/src/mame/drivers/koikoi.c
@@ -408,6 +408,23 @@ ROM_START( koikoi )
 
 	ROM_REGION( 0x0120, "proms", 0 )
 	ROM_LOAD( "prom.x",    0x000, 0x020,  NO_DUMP )
+	/* hand crafted color table */
+	ROM_FILL( 0x00, 1, 0x18 )
+	ROM_FILL( 0x01, 1, 0xff )
+	ROM_FILL( 0x02, 1, 0x06 )
+	ROM_FILL( 0x03, 1, 0x3f )
+	ROM_FILL( 0x04, 1, 0xb6 )
+	ROM_FILL( 0x05, 1, 0x10 )
+	ROM_FILL( 0x06, 1, 0x2f )
+	ROM_FILL( 0x07, 1, 0x04 )
+	ROM_FILL( 0x08, 1, 0x8b )
+	ROM_FILL( 0x09, 1, 0x3f )
+	ROM_FILL( 0x0a, 1, 0x07 )
+	ROM_FILL( 0x0b, 1, 0x00 ) // unused
+	ROM_FILL( 0x0c, 1, 0x2f )
+	ROM_FILL( 0x0d, 1, 0xff )
+	ROM_FILL( 0x0e, 1, 0x00 )
+	ROM_FILL( 0x0f, 1, 0x0b )
 	ROM_LOAD( "prom.ic23", 0x020, 0x100,  CRC(f1d169a6) SHA1(5ee4b1dfe61e8b97a90cc113ba234298189f1a73) )
 
 	ROM_REGION( 0x0a00, "plds", 0 )
diff --git a/src/mame/drivers/royalmah.c b/src/mame/drivers/royalmah.c
index 08c88ec21b5..9c7526c868c 100644
--- a/src/mame/drivers/royalmah.c
+++ b/src/mame/drivers/royalmah.c
@@ -4790,7 +4790,7 @@ GAME( 1984,  janoha,   janoh,    janoh,    royalmah, driver_device, 0,        RO
 GAME( 1985,  jansou,   0,        jansou,   jansou, driver_device,   0,        ROT0,   "Dyna",                       "Jansou (set 1)",                        GAME_NOT_WORKING|GAME_NO_SOUND )
 GAME( 1985,  jansoua,  jansou,   jansou,   jansou, driver_device,   0,        ROT0,   "Dyna",                       "Jansou (set 2)",                        0 )
 GAME( 1986,  dondenmj, 0,        dondenmj, majs101b, driver_device, 0,        ROT0,   "Dyna Electronics",           "Don Den Mahjong [BET] (Japan)",         0 )
-GAME( 1986,  ippatsu,  0,        ippatsu,  ippatsu, royalmah_state,  ippatsu,  ROT0,   "Public Software / Paradais", "Ippatsu Gyakuten [BET] (Japan)",        0 )
+GAME( 1986,  ippatsu,  0,        ippatsu,  ippatsu, royalmah_state, ippatsu,  ROT0,   "Public Software / Paradais", "Ippatsu Gyakuten [BET] (Japan)",        0 )
 GAME( 1986,  suzume,   0,        suzume,   suzume, driver_device,   0,        ROT0,   "Dyna Electronics",           "Watashiha Suzumechan (Japan)",          0 )
 GAME( 1986,  mjsiyoub, 0,        royalmah, royalmah, driver_device, 0,        ROT0,   "Visco",                      "Mahjong Shiyou (Japan)",                GAME_NOT_WORKING )
 GAME( 1986,  mjsenka,  0,        royalmah, royalmah, driver_device, 0,        ROT0,   "Visco",                      "Mahjong Senka (Japan)",                 GAME_NOT_WORKING )