diff options
Diffstat (limited to 'src/mame/drivers/embargo.c')
-rw-r--r-- | src/mame/drivers/embargo.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/src/mame/drivers/embargo.c b/src/mame/drivers/embargo.c new file mode 100644 index 00000000000..8c1c78bcba3 --- /dev/null +++ b/src/mame/drivers/embargo.c @@ -0,0 +1,279 @@ +/*************************************************************************** + + Cinematronics Embargo driver + +***************************************************************************/ + +#include "driver.h" +#include "cpu/s2650/s2650.h" + + +static UINT8 *embargo_videoram; +static size_t embargo_videoram_size; + +static UINT8 dial_enable_1; +static UINT8 dial_enable_2; +static UINT8 input_select; + + + +/************************************* + * + * Video system + * + *************************************/ + +static VIDEO_UPDATE( embargo ) +{ + offs_t offs; + + for (offs = 0; offs < embargo_videoram_size; offs++) + { + int i; + + UINT8 x = offs << 3; + UINT8 y = offs >> 5; + UINT8 data = embargo_videoram[offs]; + + for (i = 0; i < 8; i++) + { + pen_t pen = (data & 0x01) ? RGB_WHITE : RGB_BLACK; + *BITMAP_ADDR32(bitmap, y, x) = pen; + + data = data >> 1; + x = x + 1; + } + } + + return 0; +} + + + +/************************************* + * + * Input handling + * + *************************************/ + +static READ8_HANDLER( input_port_bit_r ) +{ + return (readinputport(1) << (7 - input_select)) & 0x80; +} + + +static READ8_HANDLER( dial_r ) +{ + UINT8 lo = 0; + UINT8 hi = 0; + + UINT8 mapped_lo = 0; + UINT8 mapped_hi = 0; + + int i; + + /* game reads 4 bits per dial and maps them onto clock directions */ + + static const UINT8 map[] = + { + 0x00, 0x0b, 0x01, 0x02, 0x04, 0x04, 0x02, 0x03, + 0x09, 0x0a, 0x08, 0x09, 0x08, 0x05, 0x07, 0x06 + }; + + if (dial_enable_1 && !dial_enable_2) + { + lo = readinputport(3); + hi = readinputport(4); + } + + if (dial_enable_2 && !dial_enable_1) + { + lo = readinputport(5); + hi = readinputport(6); + } + + lo = 12 * lo / 256; + hi = 12 * hi / 256; + + for (i = 0; i < 16; i++) + { + if (map[i] == lo) + { + mapped_lo = i; + } + + if (map[i] == hi) + { + mapped_hi = i; + } + } + + return (mapped_hi << 4) | mapped_lo; +} + + +static WRITE8_HANDLER( port_1_w ) +{ + dial_enable_1 = data & 0x01; /* other bits unknown */ +} + + +static WRITE8_HANDLER( port_2_w ) +{ + dial_enable_2 = data & 0x01; /* other bits unknown */ +} + + +static WRITE8_HANDLER( input_select_w ) +{ + input_select = data & 0x07; +} + + + +/************************************* + * + * Machine setup + * + *************************************/ + +static MACHINE_START( embargo ) +{ + /* register for state saving */ + state_save_register_global(dial_enable_1); + state_save_register_global(dial_enable_2); + state_save_register_global(input_select); +} + + + +/************************************* + * + * Memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 ) + AM_RANGE(0x0000, 0x0fff) AM_ROM + AM_RANGE(0x1e00, 0x1fff) AM_RAM + AM_RANGE(0x2000, 0x3fff) AM_RAM AM_BASE(&embargo_videoram) AM_SIZE(&embargo_videoram_size) +ADDRESS_MAP_END + + + +/************************************* + * + * Port handlers + * + *************************************/ + +static ADDRESS_MAP_START( main_io_map, ADDRESS_SPACE_IO, 8 ) + AM_RANGE(0x01, 0x01) AM_READWRITE(input_port_0_r, port_1_w) + AM_RANGE(0x02, 0x02) AM_READWRITE(dial_r, port_2_w) + AM_RANGE(0x03, 0x03) AM_WRITE(MWA8_NOP) /* always 0xFE */ + AM_RANGE(S2650_DATA_PORT, S2650_DATA_PORT) AM_READ(input_port_2_r) + AM_RANGE(S2650_CTRL_PORT, S2650_CTRL_PORT) AM_READWRITE(input_port_bit_r, input_select_w) +ADDRESS_MAP_END + + + +/************************************* + * + * Port definitions + * + *************************************/ + +static INPUT_PORTS_START( embargo ) + + PORT_START /* port 0x01 */ + PORT_DIPNAME( 0x03, 0x00, "Rounds" ) + PORT_DIPSETTING( 0x00, "3" ) + PORT_DIPSETTING( 0x01, "4" ) + PORT_DIPSETTING( 0x02, "5" ) + PORT_DIPSETTING( 0x03, "6" ) + + PORT_START /* S2650_CONTROL_PORT */ + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 ) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 ) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START3 ) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START4 ) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(3) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(4) + + PORT_START /* S2650_DATA_PORT */ + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN1 ) + + PORT_START + PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(50) PORT_KEYDELTA(8) PORT_PLAYER(1) + + PORT_START + PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(50) PORT_KEYDELTA(8) PORT_PLAYER(2) + + PORT_START + PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(50) PORT_KEYDELTA(8) PORT_PLAYER(3) + + PORT_START + PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(50) PORT_KEYDELTA(8) PORT_PLAYER(4) + +INPUT_PORTS_END + + + +/************************************* + * + * Machine driver + * + *************************************/ + +static MACHINE_DRIVER_START( embargo ) + + /* basic machine hardware */ + MDRV_CPU_ADD(S2650, 625000) + MDRV_CPU_PROGRAM_MAP(main_map,0) + MDRV_CPU_IO_MAP(main_io_map,0) + + MDRV_MACHINE_START(embargo) + + /* video hardware */ + MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) + MDRV_VIDEO_UPDATE(embargo) + + MDRV_SCREEN_ADD("main", 0) + MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32) + MDRV_SCREEN_SIZE(256, 256) + MDRV_SCREEN_VISIBLE_AREA(0, 255, 0, 239) + MDRV_SCREEN_REFRESH_RATE(60) + +MACHINE_DRIVER_END + + + +/************************************* + * + * ROM definitions + * + *************************************/ + +ROM_START( embargo ) + ROM_REGION( 0x8000, REGION_CPU1, 0 ) + ROM_LOAD( "emb1", 0x0000, 0x0200, CRC(00dcbc24) SHA1(67018a20d7694618123499640f041fb518ea29fa) ) + ROM_LOAD( "emb2", 0x0200, 0x0200, CRC(e7069b11) SHA1(b933095087cd4fe10f12fd244606aaaed1c31bca) ) + ROM_LOAD( "emb3", 0x0400, 0x0200, CRC(1af7a966) SHA1(a8f6d1063927106f44c43f64c26b52c07c5450df) ) + ROM_LOAD( "emb4", 0x0600, 0x0200, CRC(d9c75da0) SHA1(895784ec543f1c73ced5f37751a26cb3305030f3) ) + ROM_LOAD( "emb5", 0x0800, 0x0200, CRC(15960b58) SHA1(2e6c196b240cef92799f83deef2b1c501c01f9c9) ) + ROM_LOAD( "emb6", 0x0a00, 0x0200, CRC(7ba23058) SHA1(ad3736ec7617ecb902ea686055e55203be1ea5fd) ) + ROM_LOAD( "emb7", 0x0c00, 0x0200, CRC(6d46a593) SHA1(5432ae1c167e774c47f06ffd0e8acf801891dee1) ) + ROM_LOAD( "emb8", 0x0e00, 0x0200, CRC(f0b00634) SHA1(317aacc9022596a2af0f3b399fe119fe9c8c1679) ) +ROM_END + + + +/************************************* + * + * Game drivers + * + *************************************/ + +GAME( 1977, embargo, 0, embargo, embargo, 0, ROT0, "Cinematronics", "Embargo", GAME_NO_SOUND | GAME_SUPPORTS_SAVE ) |