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-rw-r--r--src/mame/drivers/dorachan.cpp256
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diff --git a/src/mame/drivers/dorachan.cpp b/src/mame/drivers/dorachan.cpp
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+++ b/src/mame/drivers/dorachan.cpp
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+// 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 )