// 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(); }