summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/clayshoo.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/drivers/clayshoo.c')
-rw-r--r--src/mame/drivers/clayshoo.c344
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)