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-rw-r--r--src/mame/drivers/minivadr.cpp138
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diff --git a/src/mame/drivers/minivadr.cpp b/src/mame/drivers/minivadr.cpp
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+// 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 )