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froggeram: Fix PPI accesses (nw)

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This commit is contained in:
AJR 2017-06-26 13:53:37 -04:00
parent 0d03fa9454
commit 7adf441cdb
2 changed files with 45 additions and 26 deletions
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69
src/mame/drivers/galaxian.cpp
View File

@ -2066,14 +2066,28 @@ static ADDRESS_MAP_START( tenspot_select_map, AS_PROGRAM, 8, galaxian_state )
AM_RANGE(0xe000, 0xe000) AM_WRITE(tenspot_unk_e000_w)
ADDRESS_MAP_END
READ8_MEMBER(galaxian_state::froggeram_ppi8255_r)
{
// same as theend, but accesses are scrambled
uint8_t result = 0xff;
if (offset & 0x0100) result &= m_ppi8255_0->read(space, offset & 3);
if (offset & 0x0200) result &= m_ppi8255_1->read(space, offset & 3);
return BITSWAP8(result, 0, 1, 2, 3, 4, 5, 6, 7);
}
WRITE8_MEMBER(galaxian_state::froggeram_ppi8255_w)
{
// same as theend, but accesses are scrambled
data = BITSWAP8(data, 0, 1, 2, 3, 4, 5, 6, 7);
if (offset & 0x0100) m_ppi8255_0->write(space, offset & 3, data);
if (offset & 0x0200) m_ppi8255_1->write(space, offset & 3, data);
}
static ADDRESS_MAP_START( froggeram_map, AS_PROGRAM, 8, galaxian_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x2fff) AM_ROM
// AM_RANGE(0x4100, 0x4103) // ppi8255_0 ?
AM_RANGE(0x4100, 0x4100) AM_READ_PORT("IN0") // why using the i8255_device doesn't work?
AM_RANGE(0x4101, 0x4101) AM_READ_PORT("IN1")
AM_RANGE(0x4102, 0x4102) AM_READ_PORT("IN2")
// AM_RANGE(0x4200, 0x4203) // ppi8255_1 ?
AM_RANGE(0x4000, 0x43ff) AM_READWRITE(froggeram_ppi8255_r, froggeram_ppi8255_w)
AM_RANGE(0x8000, 0x87ff) AM_RAM
AM_RANGE(0x8800, 0x8800) AM_DEVREAD("watchdog", watchdog_timer_device, reset_r)
AM_RANGE(0xa800, 0xabff) AM_RAM_WRITE(galaxian_videoram_w) AM_SHARE("videoram")
@ -4303,40 +4317,43 @@ INPUT_PORTS_END
static INPUT_PORTS_START( froggeram )
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_START("IN1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
PORT_DIPNAME( 0xc0, 0x40, DEF_STR( Lives ) )
PORT_DIPSETTING( 0xc0, "5" )
PORT_DIPSETTING( 0x80, "4" )
PORT_DIPSETTING( 0x40, "3" )
PORT_DIPSETTING( 0x00, "2")
PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) )
PORT_DIPSETTING( 0x03, "5" )
PORT_DIPSETTING( 0x01, "4" )
PORT_DIPSETTING( 0x02, "3" )
PORT_DIPSETTING( 0x00, "2" )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_4WAY
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_4WAY
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_4WAY
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )
PORT_START("IN2")
PORT_DIPUNKNOWN( 0x01, 0x00 )
PORT_DIPUNKNOWN( 0x02, 0x00 )
PORT_DIPUNKNOWN( 0x04, 0x00 )
PORT_DIPUNKNOWN( 0x08, 0x00 )
PORT_DIPNAME( 0x30, 0x00, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x30, "A 1/2 B 1/1" )
PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )
PORT_DIPSETTING( 0x0c, "A 1/2 B 1/1" )
PORT_DIPSETTING( 0x00, "A 1/1 B 1/1" )
PORT_DIPSETTING( 0x10, "A 2/1 B 2/1" )
PORT_DIPSETTING( 0x20, "A 1/1 B 2/1" )
PORT_DIPSETTING( 0x08, "A 2/1 B 2/1" )
PORT_DIPSETTING( 0x04, "A 1/1 B 2/1" )
PORT_DIPUNKNOWN( 0x10, 0x00 )
PORT_DIPUNKNOWN( 0x20, 0x00 )
PORT_DIPUNKNOWN( 0x40, 0x00 )
PORT_DIPUNKNOWN( 0x80, 0x00 )
PORT_START("IN3") /* need for some PPI accesses */
PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END
static INPUT_PORTS_START( turtles )

2
src/mame/includes/galaxian.h
View File

@ -197,6 +197,8 @@ public:
DECLARE_WRITE8_MEMBER(tenspot_unk_6000_w);
DECLARE_WRITE8_MEMBER(tenspot_unk_8000_w);
DECLARE_WRITE8_MEMBER(tenspot_unk_e000_w);
DECLARE_READ8_MEMBER(froggeram_ppi8255_r);
DECLARE_WRITE8_MEMBER(froggeram_ppi8255_w);
DECLARE_WRITE8_MEMBER(artic_gfxbank_w);
DECLARE_READ8_MEMBER(tenspot_dsw_read);
DECLARE_INPUT_CHANGED_MEMBER(gmgalax_game_changed);