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Documented MCU ports in The Deep, doesn't work yet due of a MCS51 bug

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This commit is contained in:
Angelo Salese 2011-12-22 17:53:29 +00:00
parent 94493777d6
commit 1bde9b252e
3 changed files with 155 additions and 5 deletions
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96
src/mame/drivers/thedeep.c
View File

@ -185,9 +185,87 @@ static ADDRESS_MAP_START( audio_map, AS_PROGRAM, 8 )
AM_RANGE(0x8000, 0xffff) AM_ROM
ADDRESS_MAP_END
/***************************************************************************
MCU
***************************************************************************/
static void thedeep_maincpu_bankswitch(running_machine &machine,UINT8 bank_trig)
{
thedeep_state *state = machine.driver_data<thedeep_state>();
UINT8 *rom;
int new_rombank = bank_trig & 3;
if (state->m_rombank == new_rombank)
return;
state->m_rombank = new_rombank;
rom = machine.region("maincpu")->base();
memory_set_bankptr(machine, "bank1", rom + 0x10000 + state->m_rombank * 0x4000);
/* there's code which falls through from the fixed ROM to bank #1, I have to */
/* copy it there otherwise the CPU bank switching support will not catch it. */
memcpy(rom + 0x08000, rom + 0x10000 + state->m_rombank * 0x4000, 0x4000);
}
static WRITE8_HANDLER( thedeep_p1_w )
{
flip_screen_set(space->machine(), ~(data & 1));
thedeep_maincpu_bankswitch(space->machine(),(data & 6) >> 1);
logerror("P1 %02x\n",data);
}
static READ8_HANDLER( thedeep_from_main_r )
{
static UINT8 res;
res = 0x11;
logerror("From Main read = %02x\n",res);
return 0x20;
}
static WRITE8_HANDLER( thedeep_to_main_w )
{
// ...
}
static WRITE8_HANDLER( thedeep_p3_w )
{
thedeep_state *state = space->machine().driver_data<thedeep_state>();
/* bit 0 0->1 transition IRQ0 to main */
if((!(state->m_mcu_p3_reg & 0x01)) && data & 0x01)
device_set_input_line(state->m_maincpu, 0, HOLD_LINE);
/* bit 6 0->1 transition INT1 IRQ ACK */
if((!(state->m_mcu_p3_reg & 0x40)) && data & 0x40)
device_set_input_line(state->m_mcu, MCS51_INT1_LINE, CLEAR_LINE);
/* bit 7 0->1 transition INT0 IRQ ACK */
if((!(state->m_mcu_p3_reg & 0x80)) && data & 0x80)
device_set_input_line(state->m_mcu, MCS51_INT0_LINE, CLEAR_LINE);
state->m_mcu_p3_reg = data;
logerror("P3 %02x\n",data);
}
static READ8_HANDLER( thedeep_p0_r )
{
UINT8 coin_mux;
coin_mux = ((input_port_read(space->machine(),"COINS") & 0x0e) == 0x0e); // bit 0 is hard-wired to ALL three coin latches
return (input_port_read(space->machine(),"COINS") & 0xfe) | (coin_mux & 1);
}
static ADDRESS_MAP_START( mcu_io_map, AS_IO, 8 )
ADDRESS_MAP_UNMAP_HIGH
//AM_RANGE(MCS51_PORT_P0, MCS51_PORT_P3)
AM_RANGE(MCS51_PORT_P0,MCS51_PORT_P0) AM_READ(thedeep_p0_r)
AM_RANGE(MCS51_PORT_P1,MCS51_PORT_P1) AM_WRITE(thedeep_p1_w)
AM_RANGE(MCS51_PORT_P2,MCS51_PORT_P2) AM_READWRITE(thedeep_from_main_r,thedeep_to_main_w)
AM_RANGE(MCS51_PORT_P3,MCS51_PORT_P3) AM_WRITE(thedeep_p3_w)
ADDRESS_MAP_END
@ -197,7 +275,6 @@ ADDRESS_MAP_END
***************************************************************************/
static INPUT_PORTS_START( thedeep )
PORT_START("e008")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) // Up / down shown in service mode
@ -268,6 +345,13 @@ static INPUT_PORTS_START( thedeep )
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_IMPULSE(1)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 ) PORT_IMPULSE(1)
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_IMPULSE(1)
PORT_START("COINS")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SPECIAL ) // mux of bits 1-2-3
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END
@ -359,6 +443,13 @@ static TIMER_DEVICE_CALLBACK( thedeep_interrupt )
}
}
static INTERRUPT_GEN( thedeep_mcu_irq )
{
thedeep_state *state = device->machine().driver_data<thedeep_state>();
device_set_input_line(state->m_mcu, MCS51_INT1_LINE, ASSERT_LINE);
}
static MACHINE_CONFIG_START( thedeep, thedeep_state )
/* basic machine hardware */
@ -373,6 +464,7 @@ static MACHINE_CONFIG_START( thedeep, thedeep_state )
/* MCU is a i8751 running at 8Mhz (8mhz xtal)*/
MCFG_CPU_ADD("mcu", I8751, XTAL_8MHz)
MCFG_CPU_IO_MAP(mcu_io_map)
MCFG_CPU_VBLANK_INT("screen",thedeep_mcu_irq ) // unknown source, but presumably vblank
MCFG_DEVICE_DISABLE()
MCFG_MACHINE_RESET(thedeep)

57
src/mame/etc/template_driver.c
View File

@ -22,11 +22,11 @@ public:
// devices
required_device<cpu_device> m_maincpu;
// driver_device overrides
virtual void machine_start();
virtual void machine_reset();
virtual void video_start();
virtual bool screen_update(screen_device &screen, bitmap_t &bitmap, const rectangle &cliprect);
};
@ -50,6 +50,59 @@ static ADDRESS_MAP_START( xxx_io, AS_IO, 8, xxx_state )
ADDRESS_MAP_END
static INPUT_PORTS_START( xxx )
/* dummy active high structure */
PORT_START("SYSA")
PORT_DIPNAME( 0x01, 0x00, "SYSA" )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x01, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x02, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x04, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x08, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x10, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x20, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x40, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x80, DEF_STR( On ) )
/* dummy active low structure */
PORT_START("DSWA")
PORT_DIPNAME( 0x01, 0x01, "DSWA" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
INPUT_PORTS_END
static const gfx_layout charlayout =

7
src/mame/includes/thedeep.h
View File

@ -3,7 +3,9 @@ class thedeep_state : public driver_device
public:
thedeep_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this,"maincpu")
m_maincpu(*this,"maincpu"),
m_audiocpu(*this, "audiocpu"),
m_mcu(*this, "mcu")
{ }
UINT8 *m_spriteram;
@ -20,8 +22,11 @@ public:
UINT8 *m_scroll2;
tilemap_t *m_tilemap_0;
tilemap_t *m_tilemap_1;
UINT8 m_mcu_p3_reg;
required_device<cpu_device> m_maincpu;
required_device<cpu_device> m_audiocpu;
required_device<cpu_device> m_mcu;
};