Fixed Dip Switches for 'gyruss' and clones.

src/mame/drivers/dreamwld.c

@@ -34,7 +34,7 @@ Notes:
       VSync @ 58Hz
 
 
-Stephh's notes (based on the games M68000 code and some tests) :
+Stephh's notes (based on the game M68EC020 code and some tests) :
 
   - Don't trust the "test mode" as it displays Dip Switches infos
     that are in fact unused by the game ! Leftover from another game ?

src/mame/drivers/exprraid.c

@@ -1,6 +1,6 @@
 /***************************************************************************
 
-Express Raider - (c) 1986 Data East USA
+Express Raider - (c) 1986 Data East Corporation / Data East USA
 
 Ernesto Corvi
 ernesto@imagina.com
@@ -157,7 +157,7 @@ Stephh's notes (based on the games M6502 code and some tests) :
       * 0xe7dc : COIN1 - 0xe7e4 : COIN2 (Mode 1)
       * 0xe7ec : COIN1 - 0xe7f4 : COIN2 (Mode 2)
   - At the begining of each level, you have text in lower case
-    which doesn't give you any hints to pass the level nor advices.
+    which doesn't give you any hints to pass the level nor advice.
   - In this version, you always have 5 wagons for the "shoot" stages.
   - Continue play is always available but score is reset to 0.
 

src/mame/drivers/gyruss.c

@@ -13,12 +13,12 @@ a200-a27f /
 memory mapped ports:
 
 read:
-c080      IN0
+c080      IN0  (system inputs)
 c0a0      IN1
 c0c0      IN2
-c0e0      DSW0
+c0e0      DSW1
-c000      DSW1
+c000      DSW2
-c100      DSW2
+c100      DSW3
 
 write:
 a000-a1ff  Odd frame spriteram
@@ -227,7 +227,7 @@ static INPUT_PORTS_START( gyruss )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )  PORT_2WAY
 	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* 1p shoot 2 - unused */
-	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* 2p shoot 3 - unused */
+	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
 
 	PORT_START("P2")
@@ -237,9 +237,9 @@ static INPUT_PORTS_START( gyruss )
 	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )  PORT_2WAY PORT_COCKTAIL
 	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
 	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* 2p shoot 2 - unused */
-	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
+	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
 
-	PORT_START("DSW1")
+	PORT_START("DSW1")   /* 8P Dip Switch */
 	PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coin_B ) )
 	PORT_DIPSETTING(    0x20, DEF_STR( 4C_1C ) )
 	PORT_DIPSETTING(    0x50, DEF_STR( 3C_1C ) )
@@ -275,7 +275,7 @@ static INPUT_PORTS_START( gyruss )
 	PORT_DIPSETTING(    0x09, DEF_STR( 1C_7C ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( Free_Play ) )
 
-	PORT_START("DSW2")
+	PORT_START("DSW2")   /* 8P Dip Switch */
 	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
 	PORT_DIPSETTING(    0x03, "3" )
 	PORT_DIPSETTING(    0x02, "4" )
@@ -284,10 +284,10 @@ static INPUT_PORTS_START( gyruss )
 	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Cabinet ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
 	PORT_DIPSETTING(    0x04, DEF_STR( Cocktail ) )
-	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Bonus_Life ) )
+	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Bonus_Life ) )       /* tables at 0x1653 (15 bytes) or 0x4bf3 (13 bytes) */
-	PORT_DIPSETTING(    0x08, "30000 60000" )
+	PORT_DIPSETTING(    0x08, "30k 90k 60k+" )              /* last bonus life at 810k : max. 14 bonus lives */ 
-	PORT_DIPSETTING(    0x00, "40000 70000" )
+	PORT_DIPSETTING(    0x00, "40k 110k 70k+" )             /* last bonus life at 810k : max. 12 bonus lives */
-	PORT_DIPNAME( 0x70, 0x70, DEF_STR( Difficulty ) )
+	PORT_DIPNAME( 0x70, 0x30, DEF_STR( Difficulty ) )
 	PORT_DIPSETTING(    0x70, "1 (Easiest)" )
 	PORT_DIPSETTING(    0x60, "2" )
 	PORT_DIPSETTING(    0x50, "3" )
@@ -300,22 +300,28 @@ static INPUT_PORTS_START( gyruss )
 	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
 
-	PORT_START("DSW3")
+	PORT_START("DSW3")   /* 1P Dip Switch */
 	PORT_DIPNAME( 0x01, 0x00, "Demo Music" )
 	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
 	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
-	/* other bits probably unused */
 INPUT_PORTS_END
 
-/* This is identical to gyruss except for the bonus that has different
-   values */
 static INPUT_PORTS_START( gyrussce )
 	PORT_INCLUDE( gyruss )
 
-	PORT_MODIFY("DSW1")
+	PORT_MODIFY("DSW2")
-	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Bonus_Life ) )
+	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Bonus_Life ) )       /* tables at 0x1653 (15 bytes) or 0x4bf3 (13 bytes) */
-	PORT_DIPSETTING(    0x08, "50000 70000" )
+	PORT_DIPSETTING(    0x08, "50k 120k 70k+" )             /* last bonus life at 960k : max. 14 bonus lives */ 
-	PORT_DIPSETTING(    0x00, "60000 80000" )
+	PORT_DIPSETTING(    0x00, "60k 140k 80k+" )             /* last bonus life at 940k : max. 12 bonus lives */
+	PORT_DIPNAME( 0x70, 0x20, DEF_STR( Difficulty ) )       /* "Difficult" default setting according to Centuri manual */
+	PORT_DIPSETTING(    0x70, "1 (Easiest)" )
+	PORT_DIPSETTING(    0x60, "2" )
+	PORT_DIPSETTING(    0x50, "3" )
+	PORT_DIPSETTING(    0x40, "4" )
+	PORT_DIPSETTING(    0x30, "5 (Average)" )
+	PORT_DIPSETTING(    0x20, "6" )
+	PORT_DIPSETTING(    0x10, "7" )
+	PORT_DIPSETTING(    0x00, "8 (Hardest)" )
 INPUT_PORTS_END
 
 
@@ -684,4 +690,4 @@ static DRIVER_INIT( gyruss )
 
 GAME( 1983, gyruss,   0,        gyruss,   gyruss,   gyruss, ROT90, "Konami", "Gyruss (Konami)", GAME_SUPPORTS_SAVE )
 GAME( 1983, gyrussce, gyruss,   gyruss,   gyrussce, gyruss, ROT90, "Konami (Centuri license)", "Gyruss (Centuri)", GAME_SUPPORTS_SAVE )
-GAME( 1983, venus,    gyruss, gyruss, gyrussce, gyruss, ROT90, "bootleg", "Venus", GAME_SUPPORTS_SAVE )
+GAME( 1983, venus,    gyruss,   gyruss,   gyruss,   gyruss, ROT90, "bootleg", "Venus", GAME_SUPPORTS_SAVE )