diff options
Diffstat (limited to 'src/mame/drivers/clayshoo.c')
-rw-r--r-- | src/mame/drivers/clayshoo.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/src/mame/drivers/clayshoo.c b/src/mame/drivers/clayshoo.c new file mode 100644 index 00000000000..556d5578015 --- /dev/null +++ b/src/mame/drivers/clayshoo.c @@ -0,0 +1,344 @@ +/*************************************************************************** + + Atari Clay Shoot hardware + + driver by Zsolt Vasvari + + Games supported: + * Clay Shoot + + Known issues: + * none at this time + +****************************************************************************/ + +#include "driver.h" +#include "machine/8255ppi.h" + + + +static UINT8 *clayshoo_videoram; +static size_t clayshoo_videoram_size; + +static UINT8 input_port_select; +static UINT8 analog_port_val; +static emu_timer *analog_timer_1; +static emu_timer *analog_timer_2; + + + +/************************************* + * + * Digital control handling functions + * + *************************************/ + +static WRITE8_HANDLER( input_port_select_w ) +{ + input_port_select = data; +} + + +static UINT8 difficulty_input_port_r(int bit) +{ + UINT8 ret = 0; + + /* read fake port and remap the buttons to 2 bits */ + UINT8 raw = readinputportbytag("FAKE"); + + if (raw & (1 << (bit + 1))) + ret = 0x03; /* expert */ + else if (raw & (1 << (bit + 2))) + ret = 0x01; /* pro */ + else + ret = 0x00; /* amateur otherwise */ + + return ret; +} + + +static READ8_HANDLER( input_port_r ) +{ + UINT8 ret = 0; + + switch (input_port_select) + { + case 0x01: ret = readinputportbytag("IN0"); break; + case 0x02: ret = readinputportbytag("IN1"); break; + case 0x04: ret = (readinputportbytag("IN2") & 0xf0) | + difficulty_input_port_r(0) | + (difficulty_input_port_r(3) << 2); break; + case 0x08: ret = readinputportbytag("IN3"); break; + case 0x10: + case 0x20: break; /* these two are not really used */ + default: logerror("Unexpected port read: %02X\n", input_port_select); + } + + return ret; +} + + + +/************************************* + * + * Analog control handling functions + * + *************************************/ + +static TIMER_CALLBACK( reset_analog_bit ) +{ + analog_port_val &= ~param; +} + + +static attotime compute_duration(int analog_pos) +{ + /* the 58 comes from the length of the loop used to + read the analog position */ + return ATTOTIME_IN_CYCLES(58 * analog_pos, 0); +} + + +static WRITE8_HANDLER( analog_reset_w ) +{ + /* reset the analog value, and start the two times that will fire + off in a short period proportional to the position of the + analog control and set the appropriate bit. */ + + analog_port_val = 0xff; + + timer_adjust(analog_timer_1, compute_duration(readinputportbytag("AN1")), 0x02, attotime_zero); + timer_adjust(analog_timer_2, compute_duration(readinputportbytag("AN2")), 0x01, attotime_zero); +} + + +static READ8_HANDLER( analog_r ) +{ + return analog_port_val; +} + + +static void create_analog_timers(void) +{ + analog_timer_1 = timer_alloc(reset_analog_bit); + analog_timer_2 = timer_alloc(reset_analog_bit); +} + + + +/************************************* + * + * Machine setup + * + *************************************/ + +static ppi8255_interface ppi8255_intf = +{ + 2, /* 2 chips */ + { 0, 0 }, /* Port A read */ + { 0, input_port_r }, /* Port B read */ + { 0, 0 }, /* Port C read */ + { 0, input_port_select_w }, /* Port A write */ + { 0, 0 }, /* Port B write */ + { 0, 0 /* sound effects */},/* Port C write */ +}; + + +static MACHINE_START( clayshoo ) +{ + ppi8255_init(&ppi8255_intf); + + create_analog_timers(); + + /* register for state saving */ + state_save_register_global(input_port_select); + state_save_register_global(analog_port_val); +} + + + +/************************************* + * + * Video hardware + * + *************************************/ + +static VIDEO_UPDATE( clayshoo ) +{ + offs_t offs; + + for (offs = 0; offs < clayshoo_videoram_size; offs++) + { + int i; + + UINT8 x = offs << 3; + UINT8 y = ~(offs >> 5); + UINT8 data = clayshoo_videoram[offs]; + + for (i = 0; i < 8; i++) + { + pen_t pen = (data & 0x80) ? RGB_WHITE : RGB_BLACK; + *BITMAP_ADDR32(bitmap, y, x) = pen; + + data = data << 1; + x = x + 1; + } + } + + return 0; +} + + + +/************************************* + * + * Memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 ) + AM_RANGE(0x0000, 0x1fff) AM_ROM + AM_RANGE(0x2000, 0x23ff) AM_RAM + AM_RANGE(0x4000, 0x47ff) AM_ROM + AM_RANGE(0x8000, 0x97ff) AM_RAM AM_BASE(&clayshoo_videoram) AM_SIZE(&clayshoo_videoram_size) /* 6k of video ram according to readme */ + AM_RANGE(0x9800, 0xa800) AM_WRITE(MWA8_NOP) /* not really mapped, but cleared */ + AM_RANGE(0xc800, 0xc800) AM_READWRITE(analog_r, analog_reset_w) +ADDRESS_MAP_END + + + +/************************************* + * + * Port handlers + * + *************************************/ + +static ADDRESS_MAP_START( main_io_map, ADDRESS_SPACE_IO, 8 ) + ADDRESS_MAP_FLAGS( AMEF_ABITS(8) ) + AM_RANGE(0x00, 0x00) AM_WRITE(watchdog_reset_w) + AM_RANGE(0x20, 0x23) AM_READWRITE(ppi8255_0_r, ppi8255_0_w) + AM_RANGE(0x30, 0x33) AM_READWRITE(ppi8255_1_r, ppi8255_1_w) +ADDRESS_MAP_END + + + +/************************************* + * + * Port definitions + * + *************************************/ + +static INPUT_PORTS_START( clayshoo ) + PORT_START_TAG("IN0") + PORT_DIPNAME( 0x03, 0x00, DEF_STR( Coinage ) ) + PORT_DIPSETTING( 0x00, DEF_STR( 1C_1C ) ) + PORT_DIPSETTING( 0x02, DEF_STR( 2C_3C ) ) + PORT_DIPSETTING( 0x01, DEF_STR( 1C_2C ) ) + PORT_DIPSETTING( 0x03, DEF_STR( Free_Play ) ) + PORT_BIT( 0x3c, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* doesn't appear to be used */ + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Demo_Sounds ) ) /* not 100% positive */ + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x40, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) /* used */ + PORT_DIPSETTING( 0x00, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x80, DEF_STR( On ) ) + + PORT_START_TAG("IN1") + PORT_DIPNAME( 0x07, 0x01, "Time/Bonus 1P-2P" ) + PORT_DIPSETTING( 0x00, "60/6k-90/6k" ) + PORT_DIPSETTING( 0x01, "60/6k-120/8k" ) + PORT_DIPSETTING( 0x02, "90/9.5k-150/9.5k" ) + PORT_DIPSETTING( 0x03, "90/9.5k-190/11k" ) + PORT_DIPSETTING( 0x04, "60/8k-90/8k" ) + PORT_DIPSETTING( 0x05, "60/8k-120/10k" ) + PORT_DIPSETTING( 0x06, "90/11.5k-150/11.5k" ) + PORT_DIPSETTING( 0x07, "90/11.5k-190/13k" ) + PORT_BIT( 0xf8, IP_ACTIVE_LOW, IPT_UNKNOWN ) /* doesn't appear to be used */ + + PORT_START_TAG("IN2") + PORT_BIT( 0x03, IP_ACTIVE_LOW, IPT_SPECIAL ) /* amateur/expert/pro Player 2 */ + PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_SPECIAL ) /* amateur/expert/pro Player 1 */ + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START1 ) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START2 ) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) + + PORT_START_TAG("IN3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) + PORT_BIT( 0xfe, IP_ACTIVE_LOW, IPT_UNKNOWN ) + + PORT_START_TAG("AN1") /* IN4 - Fake analog control. Visible in $c800 bit 1 */ + PORT_BIT( 0x0f, 0x08, IPT_AD_STICK_Y ) PORT_MINMAX(0,0x0f) PORT_SENSITIVITY(10) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(1) + PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START_TAG("AN2") /* IN5 - Fake analog control. Visible in $c800 bit 0 */ + PORT_BIT( 0x0f, 0x08, IPT_AD_STICK_Y ) PORT_MINMAX(0,0x0f) PORT_SENSITIVITY(10) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(2) + PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START_TAG("FAKE") /* IN6 - Fake. Visible in IN2 bits 0-1 and 2-3 */ + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_TOGGLE PORT_PLAYER(2) PORT_NAME("P2 Amateur Difficulty") + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_TOGGLE PORT_PLAYER(2) PORT_NAME("P2 Expert Difficulty") + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON4 ) PORT_TOGGLE PORT_PLAYER(2) PORT_NAME("P2 Pro Difficulty") + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_TOGGLE PORT_PLAYER(1) PORT_NAME("P1 Amateur Difficulty") + PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_TOGGLE PORT_PLAYER(1) PORT_NAME("P1 Expert Difficulty") + PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON4 ) PORT_TOGGLE PORT_PLAYER(1) PORT_NAME("P2 Pro Difficulty") + PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED ) +INPUT_PORTS_END + + + +/************************************* + * + * Machine driver + * + *************************************/ + +static MACHINE_DRIVER_START( clayshoo ) + + /* basic machine hardware */ + MDRV_CPU_ADD(Z80,5068000/4) /* 5.068/4 Mhz (divider is a guess) */ + MDRV_CPU_PROGRAM_MAP(main_map,0) + MDRV_CPU_IO_MAP(main_io_map,0) + MDRV_CPU_VBLANK_INT(irq0_line_hold,1) + + MDRV_MACHINE_START(clayshoo) + + /* video hardware */ + MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) + MDRV_VIDEO_UPDATE(clayshoo) + + MDRV_SCREEN_ADD("main", 0) + MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32) + MDRV_SCREEN_SIZE(256, 256) + MDRV_SCREEN_VISIBLE_AREA(0, 255, 64, 255) + MDRV_SCREEN_REFRESH_RATE(60) + MDRV_SCREEN_VBLANK_TIME(DEFAULT_REAL_60HZ_VBLANK_DURATION) + +MACHINE_DRIVER_END + + + +/************************************* + * + * ROM definitions + * + *************************************/ + +ROM_START( clayshoo ) + ROM_REGION( 0x10000, REGION_CPU1, 0 ) + ROM_LOAD( "0", 0x0000, 0x0800, CRC(9df9d9e3) SHA1(8ce71a6faf5df9c8c3dbb92a443b62c0f376491c) ) + ROM_LOAD( "1", 0x0800, 0x0800, CRC(5134a631) SHA1(f0764a5161934564fd0416be26087cf812e0c422) ) + ROM_LOAD( "2", 0x1000, 0x0800, CRC(5b5a67f6) SHA1(c97b4d44e6dc5dd0c42e04ffceed8934975fe769) ) + ROM_LOAD( "3", 0x1800, 0x0800, CRC(7eda8e44) SHA1(2974f8b06653aee2ffd96ff402707acfc059bc91) ) + ROM_LOAD( "4", 0x4000, 0x0800, CRC(3da16196) SHA1(eb0c0cf0c8fc3db05ac0c469fb20fe92ae6f27ce) ) +ROM_END + + + +/************************************* + * + * Game drivers + * + *************************************/ + +GAME( 1979, clayshoo, 0, clayshoo, clayshoo, 0, ROT0, "Allied Leisure", "Clay Shoot", GAME_NO_SOUND | GAME_SUPPORTS_SAVE) |