// license:GPL-2.0+ // copyright-holders:Dirk Best /*************************************************************************** VTech Laser/VZ Joystick Interface VTech Laser JS 20 Dick Smith Electronics X-7315 ***************************************************************************/ #include "emu.h" #include "joystick.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(VTECH_JOYSTICK_INTERFACE, vtech_joystick_interface_device, "vtech_joystick", "Laser/VZ Joystick Interface") //------------------------------------------------- // io_map - memory space address map //------------------------------------------------- void vtech_joystick_interface_device::io_map(address_map &map) { map.unmap_value_high(); map(0x20, 0x2f).r(FUNC(vtech_joystick_interface_device::joystick_r)); } //------------------------------------------------- // input_ports - device-specific input ports //------------------------------------------------- static INPUT_PORTS_START( joystick ) PORT_START("joystick_0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(1) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(1) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(1) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1) PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) PORT_START("joystick_0_arm") PORT_BIT(0x0f, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(1) PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) PORT_START("joystick_1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(2) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(2) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2) PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) PORT_START("joystick_1_arm") PORT_BIT(0x0f, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(2) PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) INPUT_PORTS_END ioport_constructor vtech_joystick_interface_device::device_input_ports() const { return INPUT_PORTS_NAME( joystick ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // vtech_joystick_interface_device - constructor //------------------------------------------------- vtech_joystick_interface_device::vtech_joystick_interface_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : vtech_ioexp_device(mconfig, VTECH_JOYSTICK_INTERFACE, tag, owner, clock), m_joy0(*this, "joystick_0"), m_joy0_arm(*this, "joystick_0_arm"), m_joy1(*this, "joystick_1"), m_joy1_arm(*this, "joystick_1_arm") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void vtech_joystick_interface_device::device_start() { vtech_ioexp_device::device_start(); } //************************************************************************** // IMPLEMENTATION //************************************************************************** uint8_t vtech_joystick_interface_device::joystick_r(offs_t offset) { uint8_t data = 0xff; if (!BIT(offset, 0)) data &= m_joy0->read(); if (!BIT(offset, 1)) data &= m_joy0_arm->read(); if (!BIT(offset, 2)) data &= m_joy1->read(); if (!BIT(offset, 3)) data &= m_joy1_arm->read(); return data; }