diff --git a/src/mame/drivers/marinedt.cpp b/src/mame/drivers/marinedt.cpp
index 41dc5e690b8..14b6f73673d 100644
--- a/src/mame/drivers/marinedt.cpp
+++ b/src/mame/drivers/marinedt.cpp
@@ -221,7 +221,7 @@ void marinedt_state::video_start()
 uint32_t marinedt_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
 {
 	if(m_layer_en & 8)
-		copybitmap(bitmap, *m_seabitmap, 0, 0, 0, 0, cliprect);
+		copybitmap(bitmap, *m_seabitmap, m_screen_flip == false, m_screen_flip == false, m_screen_flip ? 0 : -256, m_screen_flip ? 0 : -224, cliprect);
 	else
 		bitmap.fill(0,cliprect);
 
@@ -351,8 +351,8 @@ static INPUT_PORTS_START( marinedt )
 	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
 	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_SERVICE1 )
 	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_TILT )
-	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
-	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("P1 Ink Button")
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("P2 Ink Button") PORT_COCKTAIL
 	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 )
 	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START1 )
 	
@@ -401,33 +401,32 @@ static INPUT_PORTS_START( marinedt )
 	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_SERVICE_DIPLOC( 0x04, IP_ACTIVE_HIGH, "SWB:3")
-	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SWB:4")
-	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SWB:5")
-	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SWB:6")
-	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SWB:7")
-	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SWB:8")
-	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
-	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
+	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SWB:4")
+	PORT_DIPSETTING(    0x08, DEF_STR( Upright ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
+	PORT_DIPNAME( 0x10, 0x10, "Number of Coin Chutes") PORT_DIPLOCATION("SWB:5")
+	PORT_DIPSETTING(    0x10, "2" )
+	PORT_DIPSETTING(    0x00, "1" )
+	PORT_DIPNAME( 0x20, 0x00, "Year Display" ) PORT_DIPLOCATION("SWB:6")
+	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
+	PORT_DIPSETTING(    0x20, DEF_STR( No ) )
+	PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SWB:8,7")
+	PORT_DIPSETTING(    0x00, "3" )
+	PORT_DIPSETTING(    0x40, "4" )
+	PORT_DIPSETTING(    0x80, "5" )
+	PORT_DIPSETTING(    0xc0, "6" )
 
 	PORT_START("P1_TRACKX")
-	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(1)
+	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE
 
 	PORT_START("P1_TRACKY")
-	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(1)
+	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)
 
 	PORT_START("P2_TRACKX")
-	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(2)
+	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_COCKTAIL
 
 	PORT_START("P2_TRACKY")
-	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_PLAYER(2)
+	PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_Y ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_COCKTAIL
 INPUT_PORTS_END
 
 static const gfx_layout charlayout =
@@ -567,4 +566,4 @@ ROM_START( marinedt )
 	ROM_LOAD( "mg17.bpr", 0x0060, 0x0020, CRC(13261a02) SHA1(050edd18e4f79d19d5206f55f329340432fd4099) ) // sea bitmap colors
 ROM_END
 
-GAME( 1981, marinedt,  0,   marinedt,  marinedt, marinedt_state,  0,       ROT270, "Taito",      "Marine Date", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_COLORS | MACHINE_NO_SOUND )
+GAME( 1981, marinedt,  0,   marinedt,  marinedt, marinedt_state,  0,       ROT90, "Taito",      "Marine Date", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_COLORS | MACHINE_NO_SOUND )