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Diffstat (limited to 'src/mame/drivers/minivadr.cpp')
-rw-r--r-- | src/mame/drivers/minivadr.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/mame/drivers/minivadr.cpp b/src/mame/drivers/minivadr.cpp new file mode 100644 index 00000000000..6d847f5468f --- /dev/null +++ b/src/mame/drivers/minivadr.cpp @@ -0,0 +1,138 @@ +// license:BSD-3-Clause +// copyright-holders:Takahiro Nogi +/*************************************************************************** + +Mini Vaders (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. + +PCB Layout +---------- + +K11X0622A +MINI VADERS +|-------------------------| +|MB3771 24MHz | +|LS32 74F74 | +|LS139 | +|D26_01.IC7 LS244 J| +|Z80 LS244 A| +|LS86 LS08 LS373 M| +|LS157 LS157 LS161 LS161 M| +|LS157 LS157 LS161 LS161 A| +|6116 LS157 LS08 | +|LS74 LS74 LS74 LS157 | +|-------------------------| +Notes: (all ICs shown) + Z80 - Clock 4MHz [24/6] + 6116 - 2Kbx8 SRAM + D26_01.IC7 - 27C64 8Kbx8 EPROM + +***************************************************************************/ + +#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), + m_videoram(*this, "videoram"), + m_maincpu(*this, "maincpu") { } + + /* memory pointers */ + required_shared_ptr<UINT8> m_videoram; + UINT32 screen_update_minivadr(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + required_device<cpu_device> m_maincpu; +}; + +/************************************* + * + * Video update + * + *************************************/ + +UINT32 minivadr_state::screen_update_minivadr(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + offs_t offs; + + for (offs = 0; offs < m_videoram.bytes(); offs++) + { + int i; + + UINT8 x = offs << 3; + int y = offs >> 5; + UINT8 data = m_videoram[offs]; + + for (i = 0; i < 8; i++) + { + pen_t pen = (data & 0x80) ? rgb_t::white : rgb_t::black; + bitmap.pix32(y, x) = pen; + + data = data << 1; + x = x + 1; + } + } + + return 0; +} + + +static ADDRESS_MAP_START( minivadr_map, AS_PROGRAM, 8, minivadr_state ) + AM_RANGE(0x0000, 0x1fff) AM_ROM + AM_RANGE(0xa000, 0xbfff) AM_RAM AM_SHARE("videoram") + 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_DRIVER("screen", minivadr_state, 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_SIZE(256, 256) + MCFG_SCREEN_VISIBLE_AREA(0, 256-1, 16, 240-1) + MCFG_SCREEN_UPDATE_DRIVER(minivadr_state, 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, driver_device, 0, ROT0, "Taito Corporation", "Mini Vaders", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW ) |