diff --git a/src/mame/drivers/dcon.cpp b/src/mame/drivers/dcon.cpp
index f0187883fd5..488e1527c4a 100644
--- a/src/mame/drivers/dcon.cpp
+++ b/src/mame/drivers/dcon.cpp
@@ -5,7 +5,7 @@
     D-Con                                   (c) 1992 Success
     SD Gundam Psycho Salamander no Kyoui    (c) 1991 Banpresto/Bandai
 
-    These games run on Seibu hardware.
+    These games run on Seibu hardware somewhat similar to Blood Bros.
 
     Emulation by Bryan McPhail, mish@tendril.co.uk
 
@@ -148,7 +148,7 @@ static INPUT_PORTS_START( sdgndmps )
 	PORT_SERVICE_NO_TOGGLE( 0x0100, IP_ACTIVE_LOW )
 
 	PORT_START("DSW")
-	PORT_DIPNAME( 0x000f, 0x000f, DEF_STR( Coin_B ) )
+	PORT_DIPNAME( 0x000f, 0x000f, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW2:1,2,3,4")
 	PORT_DIPSETTING(      0x0004, DEF_STR( 4C_1C ) )
 	PORT_DIPSETTING(      0x000a, DEF_STR( 3C_1C ) )
 	PORT_DIPSETTING(      0x0001, DEF_STR( 2C_1C ) )
@@ -165,7 +165,7 @@ static INPUT_PORTS_START( sdgndmps )
 	PORT_DIPSETTING(      0x000d, DEF_STR( 1C_5C ) )
 	PORT_DIPSETTING(      0x0005, DEF_STR( 1C_6C ) )
 	PORT_DIPSETTING(      0x0009, DEF_STR( 1C_7C ) )
-	PORT_DIPNAME( 0x00f0, 0x00f0, DEF_STR( Coin_A ) )
+	PORT_DIPNAME( 0x00f0, 0x00f0, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SW2:5,6,7,8")
 	PORT_DIPSETTING(      0x0040, DEF_STR( 4C_1C ) )
 	PORT_DIPSETTING(      0x00a0, DEF_STR( 3C_1C ) )
 	PORT_DIPSETTING(      0x0010, DEF_STR( 2C_1C ) )
@@ -182,29 +182,24 @@ static INPUT_PORTS_START( sdgndmps )
 	PORT_DIPSETTING(      0x0050, DEF_STR( 1C_6C ) )
 	PORT_DIPSETTING(      0x0090, DEF_STR( 1C_7C ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( Free_Play ) )
-	PORT_DIPNAME( 0x0300, 0x0300, DEF_STR( Lives ) )
+	PORT_DIPNAME( 0x0300, 0x0300, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2")
 	PORT_DIPSETTING(      0x0200, "2" )
 	PORT_DIPSETTING(      0x0300, "3" )
 	PORT_DIPSETTING(      0x0100, "4" )
 	PORT_DIPSETTING(      0x0000, "6" )
-	PORT_DIPNAME( 0x0400, 0x0400, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0400, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x0800, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) ) // plays a jingle at the game intro (why?)
+	PORT_DIPNAME( 0x0c00, 0x0c00, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW1:3,4")
+	PORT_DIPSETTING(      0x0800, DEF_STR( Easy ) )
+	PORT_DIPSETTING(      0x0c00, DEF_STR( Normal ) )
+	PORT_DIPSETTING(      0x0400, DEF_STR( Difficult ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( Very_Difficult ) )
+	PORT_DIPNAME( 0x1000, 0x0000, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW1:5")
 	PORT_DIPSETTING(      0x1000, DEF_STR( Off ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x2000, 0x0000, DEF_STR( Allow_Continue ) )
+	PORT_DIPNAME( 0x2000, 0x0000, DEF_STR( Allow_Continue ) ) PORT_DIPLOCATION("SW1:6")
 	PORT_DIPSETTING(      0x2000, DEF_STR( No ) )
 	PORT_DIPSETTING(      0x0000, DEF_STR( Yes ) )
-	PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x4000, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
-	PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
-	PORT_DIPSETTING(      0x8000, DEF_STR( Off ) )
-	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPUNUSED_DIPLOC( 0x4000, 0x4000, "SW1:7" )
+	PORT_DIPUNUSED_DIPLOC( 0x8000, 0x8000, "SW1:8" )
 INPUT_PORTS_END
 
 
diff --git a/src/mame/drivers/goodejan.cpp b/src/mame/drivers/goodejan.cpp
index 319c036c2f7..9d3eb5f1284 100644
--- a/src/mame/drivers/goodejan.cpp
+++ b/src/mame/drivers/goodejan.cpp
@@ -14,7 +14,7 @@ ToDo:
  Some sprite flickers on attract mode
  totmejan: Are the "dots" behind the girls in attract mode correct?
 
-PCB Layout
+Tottemo E Jong PCB Layout
 
 |---------------------------------------------------------------|
 |LA4460  YM3812  M6295  E-JAN.U0911 6116        Z80A 7.15909MHz |
@@ -31,7 +31,7 @@ PCB Layout
 |                           TC110G21AF                          |
 |           82S135.U083                 PAL   6264              |
 |                                                               |
-|  DSW     DSW                                                  |
+|  DSW     DSW     SEI0220BP                                    |
 |                                              62256     62256  |
 |  E-JAN.U078                PAL                                |
 |                                                               |
@@ -49,6 +49,8 @@ Notes:
       VSync - 60Hz
       HSync - 15.38kHz
 
+Good E Jong has SEI0211 instead of SEI0210, but PCB layout is otherwise identical.
+
 
 Diagnostic Menu:
     Press and keep P1 Start and Reset