/* 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" #define NUM_PENS (8) class dorachan_state : public driver_device { public: dorachan_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } /* memory pointers */ UINT8 * m_videoram; size_t m_videoram_size; /* video-related */ UINT8 m_flip_screen; /* devices */ device_t *m_main_cpu; }; /************************************* * * Protection handling * *************************************/ static CUSTOM_INPUT( dorachan_protection_r ) { dorachan_state *state = field.machine().driver_data(); UINT8 ret = 0; switch (cpu_get_previouspc(state->m_main_cpu)) { case 0x70ce: ret = 0xf2; break; case 0x72a2: ret = 0xd5; break; case 0x72b5: ret = 0xcb; break; default: mame_printf_debug("unhandled $2400 read @ %x\n", cpu_get_previouspc(state->m_main_cpu)); break; } return ret; } /************************************* * * Video system * *************************************/ static void get_pens(pen_t *pens) { offs_t i; for (i = 0; i < NUM_PENS; i++) { pens[i] = MAKE_RGB(pal1bit(i >> 2), pal1bit(i >> 1), pal1bit(i >> 0)); } } static SCREEN_UPDATE( dorachan ) { dorachan_state *state = screen->machine().driver_data(); pen_t pens[NUM_PENS]; offs_t offs; const UINT8 *color_map_base; get_pens(pens); color_map_base = screen->machine().region("proms")->base(); for (offs = 0; offs < state->m_videoram_size; offs++) { int i; UINT8 fore_color; UINT8 x = offs >> 8 << 3; UINT8 y = offs & 0xff; /* the need for +1 is extremely unusual, but definetely correct */ offs_t color_address = ((((offs << 2) & 0x03e0) | (offs >> 8)) + 1) & 0x03ff; UINT8 data = state->m_videoram[offs]; if (state->m_flip_screen) fore_color = (color_map_base[color_address] >> 3) & 0x07; else fore_color = (color_map_base[color_address] >> 0) & 0x07; for (i = 0; i < 8; i++) { UINT8 color = (data & 0x01) ? fore_color : RGB_BLACK; *BITMAP_ADDR32(bitmap, y, x) = pens[color]; data = data >> 1; x = x + 1; } } return 0; } static WRITE8_HANDLER(dorachan_ctrl_w) { dorachan_state *state = space->machine().driver_data(); state->m_flip_screen = (data >> 6) & 0x01; } static CUSTOM_INPUT( dorachan_v128_r ) { dorachan_state *state = field.machine().driver_data(); /* to avoid resetting (when player 2 starts) bit 0 need to be inverted when screen is flipped */ return ((field.machine().primary_screen->vpos() >> 7) & 0x01) ^ state->m_flip_screen; } /************************************* * * Memory handlers * *************************************/ static ADDRESS_MAP_START( dorachan_map, AS_PROGRAM, 8 ) 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_PORT("PROT") AM_RANGE(0x2800, 0x2800) AM_MIRROR(0x03ff) AM_READ_PORT("SYSTEM") AM_RANGE(0x2c00, 0x2c00) AM_MIRROR(0x03ff) AM_READ_PORT("JOY") AM_RANGE(0x3800, 0x3800) AM_MIRROR(0x03ff) AM_READ_PORT("V128") AM_RANGE(0x4000, 0x5fff) AM_RAM AM_BASE_SIZE_MEMBER(dorachan_state, m_videoram, m_videoram_size) AM_RANGE(0x6000, 0x77ff) AM_ROM ADDRESS_MAP_END /************************************* * * Port handlers * *************************************/ static ADDRESS_MAP_START( dorachan_io_map, AS_IO, 8 ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x01, 0x01) AM_WRITENOP AM_RANGE(0x02, 0x02) AM_WRITENOP AM_RANGE(0x03, 0x03) AM_WRITE(dorachan_ctrl_w) ADDRESS_MAP_END /************************************* * * Port definition * *************************************/ static INPUT_PORTS_START( dorachan ) PORT_START("PROT") PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(dorachan_protection_r, NULL) PORT_START("SYSTEM") 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("JOY") 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 ) PORT_START("V128") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(dorachan_v128_r, NULL) PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END /************************************* * * Machine driver * *************************************/ static MACHINE_START( dorachan ) { dorachan_state *state = machine.driver_data(); state->m_main_cpu = machine.device("maincpu"); state->save_item(NAME(state->m_flip_screen)); } static MACHINE_RESET( dorachan ) { dorachan_state *state = machine.driver_data(); state->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(irq0_line_hold,2*60) MCFG_MACHINE_START(dorachan) MCFG_MACHINE_RESET(dorachan) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_FORMAT(BITMAP_FORMAT_RGB32) MCFG_SCREEN_SIZE(32*8, 32*8) MCFG_SCREEN_VISIBLE_AREA(1*8, 31*8-1, 1*8, 31*8-1) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_UPDATE(dorachan) 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, "proms", 0 ) /* color map */ ROM_LOAD( "d14.rom", 0x0000, 0x0400, CRC(c0d3ee84) SHA1(f2207c685ce8d5144a373c28f11d2cebf9518b65) ) ROM_END /************************************* * * Game driver * *************************************/ GAME( 1980, dorachan, 0, dorachan, dorachan, 0, ROT270, "Craul Denshi", "Dorachan", GAME_NO_SOUND | GAME_SUPPORTS_SAVE )