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Add irq mask and irq, hangs attempting to play.

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This commit is contained in:
Angelo Salese 2014-11-15 13:41:20 +01:00
parent 266855a382
commit 82cade1c8b
1 changed files with 21 additions and 4 deletions
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25
src/mame/drivers/alinvade.c
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@ -15,9 +15,14 @@ class alinvade_state : public driver_device
public:
alinvade_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_videoram(*this, "videoram")
{ }
UINT8 irqmask;
DECLARE_WRITE8_MEMBER(irqmask_w);
INTERRUPT_GEN_MEMBER(vblank_irq);
required_device<cpu_device> m_maincpu;
required_shared_ptr<UINT8> m_videoram;
public:
@ -26,11 +31,15 @@ public:
UINT32 screen_update_alinvade(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
};
WRITE8_MEMBER(alinvade_state::irqmask_w)
{
irqmask = data;
}
static ADDRESS_MAP_START( alinvade_map, AS_PROGRAM, 8, alinvade_state )
AM_RANGE(0x0000, 0x01ff) AM_RAM
AM_RANGE(0x0400, 0x0bff) AM_RAM AM_SHARE("videoram")
AM_RANGE(0x0c00, 0x0fff) AM_RAM
AM_RANGE(0x2000, 0x2000) AM_WRITENOP //??
AM_RANGE(0x4000, 0x4000) AM_READ_PORT("COIN")
AM_RANGE(0x6000, 0x6000) AM_READ_PORT("DSW")
@ -43,7 +52,7 @@ static ADDRESS_MAP_START( alinvade_map, AS_PROGRAM, 8, alinvade_state )
AM_RANGE(0xc400, 0xc7ff) AM_ROM
AM_RANGE(0xc800, 0xcbff) AM_ROM
AM_RANGE(0xe000, 0xe3ff) AM_ROM
AM_RANGE(0xe400, 0xe400) AM_WRITENOP //??
AM_RANGE(0xe400, 0xe400) AM_WRITE(irqmask_w) //??
AM_RANGE(0xe800, 0xe800) AM_READNOP AM_WRITENOP //??
AM_RANGE(0xec00, 0xffff) AM_ROM
ADDRESS_MAP_END
@ -121,13 +130,21 @@ UINT32 alinvade_state::screen_update_alinvade(screen_device &screen, bitmap_rgb3
return 0;
}
INTERRUPT_GEN_MEMBER(alinvade_state::vblank_irq)
{
if(irqmask & 1)
m_maincpu->set_input_line(0,HOLD_LINE);
}
static MACHINE_CONFIG_START( alinvade, alinvade_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6502,2000000) /* ? MHz */
MCFG_CPU_PROGRAM_MAP(alinvade_map)
// MCFG_CPU_VBLANK_INT_DRIVER("screen", alinvade_state, irq0_line_hold)
MCFG_CPU_VBLANK_INT_DRIVER("screen", alinvade_state, vblank_irq)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)