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f003 reads are discarded immediately

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This commit is contained in:
Michaël Banaan Ananas 2013-05-20 17:54:18 +00:00
parent 5745039e6f
commit c9203d99f5
1 changed files with 3 additions and 30 deletions
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33
src/mame/drivers/stuntair.c
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@ -202,8 +202,8 @@ public:
static ADDRESS_MAP_START( stuntair_map, AS_PROGRAM, 8, stuntair_state )
AM_RANGE(0x0000, 0x9fff) AM_ROM
AM_RANGE(0xc000, 0xc7ff) AM_RAM
AM_RANGE(0xc800, 0xcbff) AM_RAM_WRITE(stuntair_bgattrram_w) AM_SHARE("bgattrram") // bg attr
AM_RANGE(0xd000, 0xd3ff) AM_RAM_WRITE(stuntair_bgram_w) AM_SHARE("bgram") // bg
AM_RANGE(0xc800, 0xcbff) AM_RAM_WRITE(stuntair_bgattrram_w) AM_SHARE("bgattrram")
AM_RANGE(0xd000, 0xd3ff) AM_RAM_WRITE(stuntair_bgram_w) AM_SHARE("bgram")
AM_RANGE(0xd800, 0xdfff) AM_RAM AM_SHARE("sprram")
AM_RANGE(0xe000, 0xe000) AM_READ_PORT("DSWB") AM_WRITE(stuntair_coin_w)
@ -212,7 +212,7 @@ static ADDRESS_MAP_START( stuntair_map, AS_PROGRAM, 8, stuntair_state )
AM_RANGE(0xf000, 0xf000) AM_READ_PORT("IN2")
AM_RANGE(0xf001, 0xf001) AM_WRITE(stuntair_f001_w) // might be nmi enable
AM_RANGE(0xf002, 0xf002) AM_READ_PORT("IN3")
AM_RANGE(0xf003, 0xf003) AM_READ_PORT("IN4") AM_WRITE(stuntair_spritebank1_w)
AM_RANGE(0xf003, 0xf003) AM_READNOP AM_WRITE(stuntair_spritebank1_w)
// AM_RANGE(0xf004, 0xf004) AM_WRITENOP
AM_RANGE(0xf005, 0xf005) AM_WRITE(stuntair_spritebank0_w)
// AM_RANGE(0xf006, 0xf006) AM_WRITENOP
@ -309,33 +309,6 @@ static INPUT_PORTS_START( stuntair )
PORT_DIPNAME( 0x80, 0x80, "IN3:7" )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_START("IN4")
PORT_DIPNAME( 0x01, 0x01, "IN4:0" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, "IN4:1" )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, "IN4:2" )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, "IN4:3" )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, "IN4:4" )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, "IN4:5" )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, "IN4:6" )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, "IN4:7" )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
INPUT_PORTS_END
static const gfx_layout tiles8x8_layout =