mirror of
https://github.com/holub/mame
synced 2025-06-01 18:41:47 +03:00
3163aee249
(MESS) pc_joy: made pc joystick a device for the many isa audio adapters with joy ports to share. [Carl]
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*************************************************************************
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*
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* pc_joy.h
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*
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* joystick port
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*
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*************************************************************************/
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#include "emu.h"
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#include "pc_joy.h"
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static attotime JOY_time;
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READ8_HANDLER ( pc_JOY_r )
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{
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UINT8 data = 0xf;
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int delta;
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attotime new_time = space->machine().time();
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ioport_port *joystick_port = space->machine().root_device().ioport("pc_joy");
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delta = ((new_time - JOY_time) * 256 * 1000).seconds;
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if (joystick_port != NULL)
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{
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data = joystick_port->read() ^ 0xf0;
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/* timer overflow? Nope, otherwise some HWs can't verify the port properly */
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//if ((new_time - JOY_time) > attotime::from_msec(10))
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//{
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//}
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//else
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{
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if (space->machine().root_device().ioport("pc_joy_1")->read() < delta) data &= ~0x01;
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if (space->machine().root_device().ioport("pc_joy_2")->read() < delta) data &= ~0x02;
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if (space->machine().root_device().ioport("pc_joy_3")->read() < delta) data &= ~0x04;
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if (space->machine().root_device().ioport("pc_joy_4")->read() < delta) data &= ~0x08;
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}
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}
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else
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{
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data = 0xf0;
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// TODO: find decay rate with no joystick connected
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}
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return data;
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}
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WRITE8_HANDLER ( pc_JOY_w )
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{
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JOY_time = space->machine().time();
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}
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INPUT_PORTS_START( pc_joystick_none )
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PORT_START("pc_joy")
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PORT_BIT ( 0xffff, 0x0000, IPT_UNUSED )
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PORT_START("pc_joy_1")
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PORT_BIT ( 0xffff, 0x0000, IPT_UNUSED )
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PORT_START("pc_joy_2")
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PORT_BIT ( 0xffff, 0x0000, IPT_UNUSED )
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PORT_START("pc_joy_3")
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PORT_BIT ( 0xffff, 0x0000, IPT_UNUSED )
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PORT_START("pc_joy_4")
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PORT_BIT ( 0xffff, 0x0000, IPT_UNUSED )
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INPUT_PORTS_END
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INPUT_PORTS_START( pc_joystick )
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PORT_START("pc_joy")
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PORT_BIT ( 0xf, 0xf, IPT_UNUSED )
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PORT_BIT( 0x0010, 0x0000, IPT_BUTTON1) PORT_NAME("Joystick 1 Button 1")
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PORT_BIT( 0x0020, 0x0000, IPT_BUTTON2) PORT_NAME("Joystick 1 Button 2")
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PORT_BIT( 0x0040, 0x0000, IPT_BUTTON1) PORT_NAME("Joystick 2 Button 1") PORT_CODE(JOYCODE_BUTTON1) PORT_PLAYER(2)
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PORT_BIT( 0x0080, 0x0000, IPT_BUTTON2) PORT_NAME("Joystick 2 Button 2") PORT_CODE(JOYCODE_BUTTON2) PORT_PLAYER(2)
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PORT_START("pc_joy_1")
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PORT_BIT(0xff,0x80,IPT_AD_STICK_X) PORT_SENSITIVITY(100) PORT_KEYDELTA(1) PORT_MINMAX(1,0xff) PORT_CODE_DEC(KEYCODE_LEFT) PORT_CODE_INC(KEYCODE_RIGHT) PORT_CODE_DEC(JOYCODE_X_LEFT_SWITCH) PORT_CODE_INC(JOYCODE_X_RIGHT_SWITCH)
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PORT_START("pc_joy_2")
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PORT_BIT(0xff,0x80,IPT_AD_STICK_Y) PORT_SENSITIVITY(100) PORT_KEYDELTA(1) PORT_MINMAX(1,0xff) PORT_CODE_DEC(KEYCODE_UP) PORT_CODE_INC(KEYCODE_DOWN) PORT_CODE_DEC(JOYCODE_Y_UP_SWITCH) PORT_CODE_INC(JOYCODE_Y_DOWN_SWITCH)
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PORT_START("pc_joy_3")
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PORT_BIT(0xff,0x80,IPT_AD_STICK_X) PORT_SENSITIVITY(100) PORT_KEYDELTA(1) PORT_MINMAX(1,0xff) PORT_CODE_DEC(JOYCODE_X_LEFT_SWITCH) PORT_CODE_INC(JOYCODE_X_RIGHT_SWITCH) PORT_PLAYER(2)
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PORT_START("pc_joy_4")
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PORT_BIT(0xff,0x80,IPT_AD_STICK_Y) PORT_SENSITIVITY(100) PORT_KEYDELTA(1) PORT_MINMAX(1,0xff) PORT_CODE_DEC(JOYCODE_Y_UP_SWITCH) PORT_CODE_INC(JOYCODE_Y_DOWN_SWITCH) PORT_PLAYER(2)
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INPUT_PORTS_END
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const device_type PC_JOY = &device_creator<pc_joy_device>;
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pc_joy_device::pc_joy_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
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: device_t(mconfig, PC_JOY, "PC joystick", tag, owner, clock)
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{
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}
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ioport_constructor pc_joy_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME( pc_joystick );
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}
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