diff --git a/src/mame/arcade.lst b/src/mame/arcade.lst
index 90060ccc9f0..71f68cea44f 100644
--- a/src/mame/arcade.lst
+++ b/src/mame/arcade.lst
@@ -5516,6 +5516,7 @@ spawn           // 1999.?? Spawn In the Demon's Hand
 				// 1999.?? Tokio Bus Guide
 				// 1999.?? Tokio Bus Guide (Rev A)
 vtennisg        // 1999.?? Virtua Tennis / Power Smash (GD-ROM)
+totdo           // 1999.?? The Typing of the Dead
 18wheelr        // 2000.01 18 Wheeler Deluxe (Rev A)
 18wheels        // 2000.01 18 Wheeler (Standard)
 18wheelu        // 2000.01 18 Wheeler (Upright)
diff --git a/src/mame/drivers/naomi.cpp b/src/mame/drivers/naomi.cpp
index f4c25233ee0..237012693cb 100644
--- a/src/mame/drivers/naomi.cpp
+++ b/src/mame/drivers/naomi.cpp
@@ -5464,6 +5464,38 @@ EXP: THE TYPING OF THE DEAD
 
 */
 
+ROM_START( totdo )
+	NAOMI_BIOS
+	NAOMI_DEFAULT_EEPROM
+
+	ROM_REGION( 0xb000000, "rom_board", ROMREGION_ERASEFF)
+	ROM_LOAD("epr-23021.ic22",  0x0000000, 0x0400000, CRC(d848c889) SHA1(824ef197d5956d9eb6ad5d841dd5b171e1b7c074) )
+
+	ROM_LOAD("mpr-23001.ic1",   0x0800000, 0x0800000, CRC(2eaab8ed) SHA1(e078bd8781e2a04e23fd18b11d118b2548fa59a8) )
+	ROM_LOAD("mpr-23002.ic2",   0x1000000, 0x0800000, CRC(617edcc7) SHA1(10f92cd9be94739c7c2f94cf9a5fa54accbe6227) )
+	ROM_LOAD("mpr-23003.ic3",   0x1800000, 0x0800000, CRC(37d6d9f8) SHA1(3ad3fa65f33d250eb8a620e7dc7c6b1209794a80) )
+	ROM_LOAD("mpr-23004.ic4",   0x2000000, 0x0800000, CRC(e41186f2) SHA1(2f4b26d8dba1629db539736cf88ec85c21820aeb) )
+	ROM_LOAD("mpr-23005.ic5",   0x2800000, 0x0800000, CRC(2b8e1fc6) SHA1(a5cd8c5840dd316dd1ad9500804b459476ca8ba0) )
+	ROM_LOAD("mpr-23006.ic6",   0x3000000, 0x0800000, CRC(3de23e27) SHA1(d3aae2a7e5c78fc3bf8e296392d8f893961d946f) ) //on board but actually 0xff filled
+	ROM_LOAD("mpr-23007.ic7",   0x3800000, 0x0800000, CRC(ca16cfdf) SHA1(6279bc9bd661bde2d3e36ca52625f9b91867c4b4) )
+	ROM_LOAD("mpr-23008.ic8",   0x4000000, 0x0800000, CRC(8c33191c) SHA1(6227fbb3d51c4301dd1fc60ec43df7c18eef06fa) )
+	ROM_LOAD("mpr-23009.ic9",   0x4800000, 0x0800000, CRC(c982d24d) SHA1(d5a15d04f19f5569709b0b1cde64814230f4f0bb) )
+	ROM_LOAD("mpr-23010.ic10",  0x5000000, 0x0800000, CRC(c6e129b4) SHA1(642a9e1052efcb43d2b809f13d10617b43bd38f3) )
+	ROM_LOAD("mpr-23011.ic11",  0x5800000, 0x0800000, CRC(9e6942ff) SHA1(8c657d7d74c4c9106756a9934bc3c850f5069e29) )
+	ROM_LOAD("mpr-23012.ic12s", 0x6000000, 0x0800000, CRC(20e1ebe8) SHA1(e24cb5f48101e665c90af9be333e54ec274004fb) )
+	ROM_LOAD("mpr-23013.ic13s", 0x6800000, 0x0800000, CRC(3de23e27) SHA1(d3aae2a7e5c78fc3bf8e296392d8f893961d946f) ) //on board but actually 0xff filled
+	ROM_LOAD("mpr-23014.ic14s", 0x7000000, 0x0800000, CRC(c4f95fdb) SHA1(8c0e806e27d7bed274dcb20b932897ea8b8bbf86) )
+	ROM_LOAD("mpr-23015.ic15s", 0x7800000, 0x0800000, CRC(5360c49d) SHA1(dbdf955d9bb9a387ded8ada18d26d222d73514d7) )
+	ROM_LOAD("mpr-23016.ic16s", 0x8000000, 0x0800000, CRC(fae2958b) SHA1(2bfe164723b7b2f57ae0c6e2fe348459f00dc460) )
+	ROM_LOAD("mpr-23017.ic17s", 0x8800000, 0x0800000, CRC(22337e15) SHA1(6a9f5569177c2936d8ff04da74e1fd036a093422) )
+	ROM_LOAD("mpr-23018.ic18s", 0x9000000, 0x0800000, CRC(5a608e74) SHA1(4f2ec47dad71d77ad1b8c640db236332c06d7ab7) )
+	ROM_LOAD("mpr-23019.ic19s", 0x9800000, 0x0800000, CRC(5cc91cc4) SHA1(66a68991f716ec23555784163aa5140b4e44c7ab) )
+	ROM_LOAD("mpr-23020.ic20s", 0xa000000, 0x0800000, CRC(b5943007) SHA1(d0e95084aec5e05027c21a6b4a3331408853781b) )
+	//ic21 not populated
+
+	ROM_PARAMETER( ":rom_board:segam2crypt:key", "-1") // 315-5881 not populated
+ROM_END
+
 ROM_START( totd )
 	NAOMI_BIOS
 	NAOMI_DEFAULT_EEPROM
@@ -9155,6 +9187,7 @@ ROM_END
 /* 0022 */ GAME( 2000, tduno2,   naomi,    naomim1, naomi,   naomi_state, naomi,   ROT0, "Sega", "Touch de Uno! 2", GAME_FLAGS )
 /* 0023 */ GAME( 2000, 18wheelr, naomi,    naomim2, 18wheelr,naomi_state, naomi,   ROT0, "Sega", "18 Wheeler (deluxe) (Rev A)", GAME_FLAGS )
 /* 0025 */ GAME( 1999, marstv,   naomi,    naomim2, naomi,   naomi_state, naomi,   ROT0, "Sega", "Mars TV (JPN)", GAME_FLAGS )
+/* 0026 */ GAME( 2000, totdo,    totd,     naomim2, naomi,   naomi_state, naomi,   ROT0, "Sega", "The Typing of the Dead (JPN, USA, EXP, KOR, AUS)", GAME_FLAGS )
 /* 0026 */ GAME( 2000, totd,     naomi,    naomim2, naomi,   naomi_state, naomi,   ROT0, "Sega", "The Typing of the Dead (JPN, USA, EXP, KOR, AUS) (Rev A)", GAME_FLAGS )
 /* 0027 */ GAME( 2000, smarinef, naomi,    naomim2, naomi,   naomi_state, naomi,   ROT0, "Sega", "Sega Marine Fishing", GAME_FLAGS )
 /* 0028 */ GAME( 2000, vonot,    naomi,    naomim2, naomi,   naomi_state, naomi,   ROT0, "Sega", "Virtual On Oratorio Tangram M.S.B.S. ver5.66 2000 Edition", GAME_FLAGS )