diff options
Diffstat (limited to 'src/mame/drivers/dorachan.cpp')
-rw-r--r-- | src/mame/drivers/dorachan.cpp | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/mame/drivers/dorachan.cpp b/src/mame/drivers/dorachan.cpp new file mode 100644 index 00000000000..863636149d4 --- /dev/null +++ b/src/mame/drivers/dorachan.cpp @@ -0,0 +1,256 @@ +// license:LGPL-2.1+ +// copyright-holders:Tomasz Slanina +/* +Dorachan (Dora-Chan ?) (c) 1980 Craul Denshi +Driver by Tomasz Slanina + +Similar to Beam Invader +Todo: +- discrete sound +- dips (if any) - bits 5,6,7 of input port 0 ? +*/ + +#include "emu.h" +#include "cpu/z80/z80.h" + + +class dorachan_state : public driver_device +{ +public: + dorachan_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_screen(*this, "screen"), + m_palette(*this, "palette"), + m_videoram(*this, "videoram"), + m_colors(*this, "colors") + { } + + // devices, memory pointers + required_device<cpu_device> m_maincpu; + required_device<screen_device> m_screen; + required_device<palette_device> m_palette; + + required_shared_ptr<UINT8> m_videoram; + required_region_ptr<UINT8> m_colors; + + // internal state + UINT8 m_flip_screen; + + DECLARE_WRITE8_MEMBER(control_w); + DECLARE_READ8_MEMBER(protection_r); + DECLARE_READ8_MEMBER(v128_r); + UINT32 screen_update_dorachan(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + + virtual void machine_start(); + virtual void machine_reset(); +}; + + + +/************************************* + * + * Video system + * + *************************************/ + +UINT32 dorachan_state::screen_update_dorachan(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + for (offs_t offs = 0; offs < m_videoram.bytes(); offs++) + { + UINT8 fore_color; + + UINT8 x = offs >> 8 << 3; + UINT8 y = offs & 0xff; + + /* the need for +1 is extremely unusual, but definitely correct */ + offs_t color_address = ((((offs << 2) & 0x03e0) | (offs >> 8)) + 1) & 0x03ff; + + UINT8 data = m_videoram[offs]; + + if (m_flip_screen) + fore_color = (m_colors[color_address] >> 3) & 0x07; + else + fore_color = (m_colors[color_address] >> 0) & 0x07; + + for (int i = 0; i < 8; i++) + { + UINT8 color = (data & 0x01) ? fore_color : 0; + bitmap.pix32(y, x) = m_palette->pen_color(color); + + data = data >> 1; + x = x + 1; + } + } + + return 0; +} + + + +/************************************* + * + * I/O handlers + * + *************************************/ + +READ8_MEMBER(dorachan_state::protection_r) +{ + UINT8 ret = 0; + + switch (m_maincpu->pcbase()) + { + case 0x70ce: ret = 0xf2; break; + case 0x72a2: ret = 0xd5; break; + case 0x72b5: ret = 0xcb; break; + + default: + osd_printf_debug("unhandled $2400 read @ %x\n", m_maincpu->pcbase()); + break; + } + + return ret; +} + +READ8_MEMBER(dorachan_state::v128_r) +{ + // to avoid resetting (when player 2 starts) bit 0 need to be inverted when screen is flipped + return 0xfe | ((m_screen->vpos() >> 7 & 1) ^ m_flip_screen); +} + +WRITE8_MEMBER(dorachan_state::control_w) +{ + // d6: flip screen + // other: ? + m_flip_screen = data >> 6 & 1; +} + + +static ADDRESS_MAP_START( dorachan_map, AS_PROGRAM, 8, dorachan_state ) + AM_RANGE(0x0000, 0x17ff) AM_ROM + AM_RANGE(0x1800, 0x1fff) AM_RAM + AM_RANGE(0x2000, 0x23ff) AM_ROM + AM_RANGE(0x2400, 0x2400) AM_MIRROR(0x03ff) AM_READ(protection_r) + AM_RANGE(0x2800, 0x2800) AM_MIRROR(0x03ff) AM_READ_PORT("IN0") + AM_RANGE(0x2c00, 0x2c00) AM_MIRROR(0x03ff) AM_READ_PORT("IN1") + AM_RANGE(0x3800, 0x3800) AM_MIRROR(0x03ff) AM_READ(v128_r) + AM_RANGE(0x4000, 0x5fff) AM_RAM AM_SHARE("videoram") + AM_RANGE(0x6000, 0x77ff) AM_ROM +ADDRESS_MAP_END + +static ADDRESS_MAP_START( dorachan_io_map, AS_IO, 8, dorachan_state ) + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x01, 0x01) AM_WRITENOP + AM_RANGE(0x02, 0x02) AM_WRITENOP + AM_RANGE(0x03, 0x03) AM_WRITE(control_w) +ADDRESS_MAP_END + + + +/************************************* + * + * Port definition + * + *************************************/ + +static INPUT_PORTS_START( dorachan ) + PORT_START("IN0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START1 ) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START2 ) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL + PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + + PORT_START("IN1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_COCKTAIL + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_COCKTAIL + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_COCKTAIL + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_COCKTAIL + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) +INPUT_PORTS_END + + + +/************************************* + * + * Machine driver + * + *************************************/ + +void dorachan_state::machine_start() +{ + save_item(NAME(m_flip_screen)); +} + +void dorachan_state::machine_reset() +{ + m_flip_screen = 0; +} + +static MACHINE_CONFIG_START( dorachan, dorachan_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", Z80, 2000000) + MCFG_CPU_PROGRAM_MAP(dorachan_map) + MCFG_CPU_IO_MAP(dorachan_io_map) + MCFG_CPU_PERIODIC_INT_DRIVER(dorachan_state, irq0_line_hold, 2*60) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_SIZE(32*8, 32*8) + MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 1*8, 31*8-1) + MCFG_SCREEN_REFRESH_RATE(60) + MCFG_SCREEN_UPDATE_DRIVER(dorachan_state, screen_update_dorachan) + + MCFG_PALETTE_ADD_3BIT_BGR("palette") +MACHINE_CONFIG_END + + + +/************************************* + * + * ROM definition + * + *************************************/ + +ROM_START( dorachan ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD( "c1.e1", 0x0000, 0x0400, CRC(29d66a96) SHA1(a0297d87574af65c6ded99aeb377ac407f6f163f) ) + ROM_LOAD( "d2.e2", 0x0400, 0x0400, CRC(144b6cd1) SHA1(195ce86e912a4b395097008c6d812fd75a1a2482) ) + ROM_LOAD( "d3.e3", 0x0800, 0x0400, CRC(a9a1bed7) SHA1(98af6f851c4477f770b6bd67e5465b5a271311ee) ) + ROM_LOAD( "d4.e5", 0x0c00, 0x0400, CRC(099ddf4b) SHA1(e4dd2b17a4320615204c66c24f60e58db13a5319) ) + ROM_LOAD( "c5.e6", 0x1000, 0x0400, CRC(49449dab) SHA1(3627c16cc17fae9de2294a37602b726e107d0a13) ) + ROM_LOAD( "d6.e7", 0x1400, 0x0400, CRC(5e409680) SHA1(f5e4d820c0f0493d724cd0d3da1113bccc09c2c3) ) + ROM_LOAD( "c7.e8", 0x2000, 0x0400, CRC(b331a5ff) SHA1(1053953c76dddff450b9c9037e7797d50f9c7046) ) + ROM_LOAD( "d8.rom", 0x6000, 0x0400, CRC(5fe1e731) SHA1(8e5dcb5f8d1d6f8c06808dd808f8bce7b07014ee) ) + ROM_LOAD( "d9.rom", 0x6400, 0x0400, CRC(338881a8) SHA1(cd725b42c3f96826e94345698738f6b5a532d3d5) ) + ROM_LOAD( "d10.rom", 0x6800, 0x0400, CRC(f8c59517) SHA1(655a976b1221e5aff69e0c0cc58d02c0b7bb6197) ) + ROM_LOAD( "d11.rom", 0x6c00, 0x0400, CRC(c2e0f066) SHA1(be6b780a8957d945e5634ac9689b440a41e9a2a4) ) + ROM_LOAD( "d12.rom", 0x7000, 0x0400, CRC(275e5dc1) SHA1(ac07db4b428daa49a52c679de95ddedbea0076b9) ) + ROM_LOAD( "d13.rom", 0x7400, 0x0400, CRC(24ccfcf9) SHA1(85e5052ee657f518b0509eb64e494bc3a74e651e) ) + + ROM_REGION( 0x0400, "colors", 0 ) + ROM_LOAD( "d14.rom", 0x0000, 0x0400, CRC(c0d3ee84) SHA1(f2207c685ce8d5144a373c28f11d2cebf9518b65) ) +ROM_END + + + +/************************************* + * + * Game driver + * + *************************************/ + +GAME( 1980, dorachan, 0, dorachan, dorachan, driver_device, 0, ROT270, "Alpha Denshi Co. / Craul Denshi", "Dora-chan (Japan)", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE ) |