/*************************************************************************** Minivader (Space Invaders's mini game) (c)1990 Taito Corporation Driver by Takahiro Nogi (nogi@kt.rim.or.jp) 1999/12/19 - This is a test board sold together with the cabinet (as required by law in Japan). It has no sound. ***************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" class minivadr_state : public driver_device { public: minivadr_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } /* memory pointers */ UINT8 * m_videoram; size_t m_videoram_size; }; /************************************* * * Video update * *************************************/ static SCREEN_UPDATE( minivadr ) { minivadr_state *state = screen->machine().driver_data(); offs_t offs; for (offs = 0; offs < state->m_videoram_size; offs++) { int i; UINT8 x = offs << 3; int y = offs >> 5; UINT8 data = state->m_videoram[offs]; for (i = 0; i < 8; i++) { pen_t pen = (data & 0x80) ? RGB_WHITE : RGB_BLACK; *BITMAP_ADDR32(bitmap, y, x) = pen; data = data << 1; x = x + 1; } } return 0; } static ADDRESS_MAP_START( minivadr_map, AS_PROGRAM, 8 ) AM_RANGE(0x0000, 0x1fff) AM_ROM AM_RANGE(0xa000, 0xbfff) AM_RAM AM_BASE_SIZE_MEMBER(minivadr_state, m_videoram, m_videoram_size) AM_RANGE(0xe008, 0xe008) AM_READ_PORT("INPUTS") AM_WRITENOP // W - ??? ADDRESS_MAP_END static INPUT_PORTS_START( minivadr ) PORT_START("INPUTS") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 ) 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 ) INPUT_PORTS_END static MACHINE_CONFIG_START( minivadr, minivadr_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", Z80,24000000 / 6) /* 4 MHz ? */ MCFG_CPU_PROGRAM_MAP(minivadr_map) MCFG_CPU_VBLANK_INT("screen", irq0_line_hold) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) MCFG_SCREEN_FORMAT(BITMAP_FORMAT_RGB32) MCFG_SCREEN_SIZE(256, 256) MCFG_SCREEN_VISIBLE_AREA(0, 256-1, 16, 240-1) MCFG_SCREEN_UPDATE(minivadr) /* the board has no sound hardware */ MACHINE_CONFIG_END /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START( minivadr ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "d26-01.bin", 0x0000, 0x2000, CRC(a96c823d) SHA1(aa9969ff80e94b0fff0f3530863f6b300510162e) ) ROM_END GAME( 1990, minivadr, 0, minivadr, minivadr, 0, ROT0, "Taito Corporation", "Minivader", GAME_SUPPORTS_SAVE | GAME_NO_SOUND_HW )