trunk/src/mame/drivers/alinvade.c
| r241901 | r241902 | |
|---|
| 15 | 15 | public: |
| 16 | 16 | alinvade_state(const machine_config &mconfig, device_type type, const char *tag) |
| 17 | 17 | : driver_device(mconfig, type, tag), |
| 18 | m_maincpu(*this, "maincpu"), |
| 18 | 19 | m_videoram(*this, "videoram") |
| 19 | 20 | { } |
| 20 | | |
| 21 | |
| 22 | UINT8 irqmask; |
| 23 | DECLARE_WRITE8_MEMBER(irqmask_w); |
| 24 | INTERRUPT_GEN_MEMBER(vblank_irq); |
| 25 | required_device<cpu_device> m_maincpu; |
| 21 | 26 | required_shared_ptr<UINT8> m_videoram; |
| 22 | 27 | |
| 23 | 28 | public: |
| r241901 | r241902 | |
|---|
| 26 | 31 | UINT32 screen_update_alinvade(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); |
| 27 | 32 | }; |
| 28 | 33 | |
| 34 | WRITE8_MEMBER(alinvade_state::irqmask_w) |
| 35 | { |
| 36 | irqmask = data; |
| 37 | } |
| 29 | 38 | |
| 30 | | |
| 31 | 39 | static ADDRESS_MAP_START( alinvade_map, AS_PROGRAM, 8, alinvade_state ) |
| 32 | 40 | AM_RANGE(0x0000, 0x01ff) AM_RAM |
| 33 | 41 | AM_RANGE(0x0400, 0x0bff) AM_RAM AM_SHARE("videoram") |
| 42 | AM_RANGE(0x0c00, 0x0fff) AM_RAM |
| 34 | 43 | AM_RANGE(0x2000, 0x2000) AM_WRITENOP //?? |
| 35 | 44 | AM_RANGE(0x4000, 0x4000) AM_READ_PORT("COIN") |
| 36 | 45 | AM_RANGE(0x6000, 0x6000) AM_READ_PORT("DSW") |
| r241901 | r241902 | |
|---|
| 43 | 52 | AM_RANGE(0xc400, 0xc7ff) AM_ROM |
| 44 | 53 | AM_RANGE(0xc800, 0xcbff) AM_ROM |
| 45 | 54 | AM_RANGE(0xe000, 0xe3ff) AM_ROM |
| 46 | | AM_RANGE(0xe400, 0xe400) AM_WRITENOP //?? |
| 55 | AM_RANGE(0xe400, 0xe400) AM_WRITE(irqmask_w) //?? |
| 47 | 56 | AM_RANGE(0xe800, 0xe800) AM_READNOP AM_WRITENOP //?? |
| 48 | 57 | AM_RANGE(0xec00, 0xffff) AM_ROM |
| 49 | 58 | ADDRESS_MAP_END |
| r241901 | r241902 | |
|---|
| 121 | 130 | return 0; |
| 122 | 131 | } |
| 123 | 132 | |
| 133 | INTERRUPT_GEN_MEMBER(alinvade_state::vblank_irq) |
| 134 | { |
| 135 | if(irqmask & 1) |
| 136 | m_maincpu->set_input_line(0,HOLD_LINE); |
| 137 | } |
| 124 | 138 | |
| 139 | |
| 140 | |
| 141 | |
| 125 | 142 | static MACHINE_CONFIG_START( alinvade, alinvade_state ) |
| 126 | 143 | |
| 127 | 144 | /* basic machine hardware */ |
| 128 | 145 | MCFG_CPU_ADD("maincpu", M6502,2000000) /* ? MHz */ |
| 129 | 146 | MCFG_CPU_PROGRAM_MAP(alinvade_map) |
| 130 | | // MCFG_CPU_VBLANK_INT_DRIVER("screen", alinvade_state, irq0_line_hold) |
| 147 | MCFG_CPU_VBLANK_INT_DRIVER("screen", alinvade_state, vblank_irq) |
| 131 | 148 | |
| 132 | 149 | /* video hardware */ |
| 133 | 150 | MCFG_SCREEN_ADD("screen", RASTER) |