diff --git a/src/mame/drivers/namcos12.cpp b/src/mame/drivers/namcos12.cpp
index 0a6e53fd1db..be58e8de9ca 100644
--- a/src/mame/drivers/namcos12.cpp
+++ b/src/mame/drivers/namcos12.cpp
@@ -1153,6 +1153,7 @@ public:
 
 	DECLARE_DRIVER_INIT(namcos12);
 	DECLARE_DRIVER_INIT(ptblank2);
+	DECLARE_DRIVER_INIT(technodr);
 	inline void ATTR_PRINTF(3,4) verboselog( int n_level, const char *s_fmt, ... );
 	void namcos12_rom_read( UINT32 *p_n_psxram, UINT32 n_address, INT32 n_size );
 	void namcos12_sub_irq( screen_device &screen, bool vblank_state );
@@ -1654,6 +1655,14 @@ DRIVER_INIT_MEMBER(namcos12_state,ptblank2)
 	*( (UINT32 *)( memregion( "maincpu:rom" )->base() + 0x331c4 ) ) = 0;
 }
 
+DRIVER_INIT_MEMBER(namcos12_state,technodr)
+{
+	DRIVER_INIT_CALL(namcos12);
+
+	// HACK: patch H8 to fix COIN ERROR
+	*( (UINT32 *)( memregion( "sub" )->base() + 0x14b6 ) ) = 0;
+}
+
 static MACHINE_CONFIG_START( coh700, namcos12_state )
 
 	/* basic machine hardware */
@@ -1996,13 +2005,13 @@ static INPUT_PORTS_START( technodr )
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SERVICE1 )  // service coin
 
 	PORT_START("GAS")
-	PORT_BIT( 0x3ff, 0x0200, IPT_PEDAL )  PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_NAME("Gas Pedal")
+	PORT_BIT( 0x3ff, 0x0200, IPT_PEDAL )  PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_NAME("Gas Pedal") PORT_REVERSE
 
 	PORT_START("BRAKE")
-	PORT_BIT( 0x3ff, 0x0200, IPT_PEDAL2 ) PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_NAME("Brake Pedal")
+	PORT_BIT( 0x3ff, 0x0200, IPT_PEDAL2 ) PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_NAME("Brake Pedal") PORT_REVERSE
 
 	PORT_START("STEER")
-	PORT_BIT( 0x3ff, 0x0200, IPT_PADDLE ) PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_NAME("Steering Wheel")
+	PORT_BIT( 0x3ff, 0x0200, IPT_PADDLE ) PORT_SENSITIVITY(100) PORT_KEYDELTA(10) PORT_NAME("Steering Wheel") PORT_REVERSE
 INPUT_PORTS_END
 
 static INPUT_PORTS_START( aplarail )
@@ -3109,8 +3118,8 @@ ROM_START( technodr )
 	ROM_LOAD16_BYTE( "th1rom0u.9",   0x0000001, 0x400000, CRC(260ae0c5) SHA1(2ecb82e069fa64b9d3f63d6193befae02f3140e4) )
 	ROM_LOAD16_BYTE( "th1rom1l.7",   0x0800000, 0x400000, CRC(56d9b477) SHA1(101b5acfbe5d292418f7fd8db642187f2b571d0b) )
 	ROM_LOAD16_BYTE( "th1rom1u.10",  0x0800001, 0x400000, CRC(a45d337e) SHA1(10e230b61ab4c6aa386c68463badef0c4ba58f0e) )
-	ROM_LOAD16_BYTE( "th1fl3l.12",   0x1000000, 0x200000, CRC(cd4422c0) SHA1(97a9788cf0c589477f77c5403cc715ce4980a7bd) )
-	ROM_LOAD16_BYTE( "th1fl3u.13",   0x1000001, 0x200000, CRC(c330116f) SHA1(b12de5a82d6ebb5f893882b578e02af732231512) )
+	ROM_LOAD16_BYTE( "th1fl3l.12",   0x1800000, 0x200000, CRC(c330116f) SHA1(b12de5a82d6ebb5f893882b578e02af732231512) )
+	ROM_LOAD16_BYTE( "th1fl3u.13",   0x1800001, 0x200000, CRC(cd4422c0) SHA1(97a9788cf0c589477f77c5403cc715ce4980a7bd) )
 
 	ROM_REGION( 0x0080000, "sub", 0 ) /* sound prg */
 	ROM_LOAD16_WORD_SWAP( "th1verb.11s",  0x000000, 0x080000, CRC(85806e2e) SHA1(9e0a7e6924b72e7b5b1d0e72eeec10045984dd4b) )
@@ -3173,7 +3182,7 @@ GAME( 1998, ehrgeizja, ehrgeiz,  coh700,   namcos12, namcos12_state, namcos12, R
 GAME( 1998, mdhorse,   0,        coh700,   namcos12, namcos12_state, namcos12, ROT0, "MOSS / Namco",    "Derby Quiz My Dream Horse (Japan, MDH1/VER.A2)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING ) /* KC035 */
 GAME( 1998, aplarail,  0,        aplarail, aplarail, namcos12_state, namcos12, ROT0, "Namco / Tomy",    "Attack Pla Rail (Japan, AP1/VER.A)", MACHINE_IMPERFECT_GRAPHICS ) /* KC032 */
 GAME( 1998, sws98,     0,        coh700,   namcos12, namcos12_state, namcos12, ROT0, "Namco",           "Super World Stadium '98 (Japan, SS81/VER.A)", MACHINE_IMPERFECT_GRAPHICS ) /* KC0?? */
-GAME( 1998, technodr,  0,        technodr, technodr, namcos12_state, namcos12, ROT0, "Namco",           "Techno Drive (Japan, TD2/VER.B)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_NOT_WORKING ) /* KC056 */
+GAME( 1998, technodr,  0,        technodr, technodr, namcos12_state, technodr, ROT0, "Namco",           "Techno Drive (Japan, TD2/VER.B)", MACHINE_IMPERFECT_GRAPHICS ) /* KC056 */
 GAME( 1998, tenkomor,  0,        coh700,   namcos12, namcos12_state, namcos12, ROT90,"Namco",           "Tenkomori Shooting (Asia, TKM2/VER.A1)", MACHINE_IMPERFECT_GRAPHICS ) /* KC036 */
 GAME( 1998, tenkomorja,tenkomor, coh700,   namcos12, namcos12_state, namcos12, ROT90,"Namco",           "Tenkomori Shooting (Japan, TKM1/VER.A1)", MACHINE_IMPERFECT_GRAPHICS ) /* KC036 */
 GAME( 1998, fgtlayer,  0,        coh700,   namcos12, namcos12_state, namcos12, ROT0, "Arika / Namco",   "Fighting Layer (Japan, FTL1/VER.A)", MACHINE_IMPERFECT_GRAPHICS ) /* KC037 */