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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
/**********************************************************************
Sega Saturn Joypad emulation
**********************************************************************/
#include "emu.h"
#include "joy.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(SATURN_JOY, saturn_joy_device, "saturn_joy", "Sega Saturn Joypad")
static INPUT_PORTS_START( saturn_joy )
PORT_START("JOY")
PORT_BIT(0x8000, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT)
PORT_BIT(0x4000, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT)
PORT_BIT(0x2000, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN)
PORT_BIT(0x1000, IP_ACTIVE_LOW, IPT_JOYSTICK_UP)
PORT_BIT(0x0800, IP_ACTIVE_LOW, IPT_START)
PORT_BIT(0x0400, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("A")
PORT_BIT(0x0200, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_NAME("C")
PORT_BIT(0x0100, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_NAME("B")
PORT_BIT(0x0080, IP_ACTIVE_LOW, IPT_BUTTON8) PORT_NAME("R")
PORT_BIT(0x0040, IP_ACTIVE_LOW, IPT_BUTTON4) PORT_NAME("X")
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_BUTTON5) PORT_NAME("Y")
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_BUTTON6) PORT_NAME("Z")
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_BUTTON7) PORT_NAME("L")
// Note: unused bits must stay high, Bug 2 relies on this.
PORT_BIT(0x0007, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor saturn_joy_device::device_input_ports() const
{
return INPUT_PORTS_NAME( saturn_joy );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// saturn_joy_device - constructor
//-------------------------------------------------
saturn_joy_device::saturn_joy_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, SATURN_JOY, tag, owner, clock),
device_saturn_control_port_interface(mconfig, *this),
m_joy(*this, "JOY")
{
m_ctrl_id = 0x02;
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void saturn_joy_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void saturn_joy_device::device_reset()
{
}
//-------------------------------------------------
// read_ctrl
//-------------------------------------------------
uint8_t saturn_joy_device::read_ctrl(uint8_t offset)
{
uint8_t res = 0;
switch (offset)
{
case 0:
default:
res = m_joy->read() >> 8;
break;
case 1:
res = m_joy->read() & 0xff;
break;
}
return res;
}
//-------------------------------------------------
// read_direct
//-------------------------------------------------
uint16_t saturn_joy_device::read_direct()
{
return m_joy->read();
}
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