diff options
Diffstat (limited to 'src/mame/drivers/minivadr.c')
-rw-r--r-- | src/mame/drivers/minivadr.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/mame/drivers/minivadr.c b/src/mame/drivers/minivadr.c new file mode 100644 index 00000000000..1219167d778 --- /dev/null +++ b/src/mame/drivers/minivadr.c @@ -0,0 +1,103 @@ +/*************************************************************************** + +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 "driver.h" +#include "cpu/z80/z80.h" + + + +/************************************* + * + * Video update + * + *************************************/ + +static VIDEO_UPDATE( minivadr ) +{ + offs_t offs; + + for (offs = 0; offs < videoram_size; offs++) + { + int i; + + UINT8 x = offs << 3; + int y = offs >> 5; + UINT8 data = 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, ADDRESS_SPACE_PROGRAM, 8 ) + AM_RANGE(0x0000, 0x1fff) AM_ROM + AM_RANGE(0xa000, 0xbfff) AM_RAM AM_BASE(&videoram) AM_SIZE(&videoram_size) + AM_RANGE(0xe008, 0xe008) AM_READWRITE(input_port_0_r, MWA8_NOP) // W - ??? +ADDRESS_MAP_END + + +static INPUT_PORTS_START( minivadr ) + PORT_START + 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_DRIVER_START( minivadr ) + + /* basic machine hardware */ + MDRV_CPU_ADD(Z80,24000000 / 6) /* 4 MHz ? */ + MDRV_CPU_PROGRAM_MAP(minivadr_map,0) + MDRV_CPU_VBLANK_INT(irq0_line_hold,1) + + MDRV_SCREEN_REFRESH_RATE(60) + MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION) + + /* video hardware */ + MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) + MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32) + MDRV_SCREEN_SIZE(256, 256) + MDRV_SCREEN_VISIBLE_AREA(0, 256-1, 16, 240-1) + MDRV_VIDEO_UPDATE(minivadr) + + /* the board has no sound hardware */ +MACHINE_DRIVER_END + + +/*************************************************************************** + + Game driver(s) + +***************************************************************************/ + +ROM_START( minivadr ) + ROM_REGION( 0x10000, REGION_CPU1, 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 ) |