// license:BSD-3-Clause // copyright-holders:Curt Coder, Phill Harvey-Smith /********************************************************************** QJump/Quanta QL Internal Mouse Interface emulation **********************************************************************/ #include "emu.h" #include "qimi.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(QIMI, qimi_device, "qimi", "QL Internal Mouse Interface") //------------------------------------------------- // INPUT_CHANGED_MEMBER( mouse_x_changed ) //------------------------------------------------- INPUT_CHANGED_MEMBER( qimi_device::mouse_x_changed ) { if (newval > oldval) { m_status |= ST_X_DIR; } else { m_status &= ~ST_X_DIR; } m_status |= ST_X_INT; if (m_extint_en) { m_write_extint(ASSERT_LINE); } } //------------------------------------------------- // INPUT_CHANGED_MEMBER( mouse_y_changed ) //------------------------------------------------- INPUT_CHANGED_MEMBER( qimi_device::mouse_y_changed ) { if (newval < oldval) { m_status |= ST_Y_DIR; } else { m_status &= ~ST_Y_DIR; } m_status |= ST_Y_INT; if (m_extint_en) { m_write_extint(ASSERT_LINE); } } //------------------------------------------------- // INPUT_PORTS( qimi ) //------------------------------------------------- INPUT_PORTS_START( qimi ) PORT_START("mouse_x") PORT_BIT( 0xff, 0x00, IPT_MOUSE_X ) PORT_SENSITIVITY(50) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_CHANGED_MEMBER(DEVICE_SELF, qimi_device, mouse_x_changed, 0) PORT_START("mouse_y") PORT_BIT( 0xff, 0x00, IPT_MOUSE_Y ) PORT_SENSITIVITY(50) PORT_KEYDELTA(5) PORT_MINMAX(0, 255) PORT_CHANGED_MEMBER(DEVICE_SELF, qimi_device, mouse_y_changed, 0) PORT_START("mouse_buttons") PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("Right Mouse Button") PORT_CODE(MOUSECODE_BUTTON2) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Left Mouse Button") PORT_CODE(MOUSECODE_BUTTON1) PORT_BIT( 0xcf, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END //------------------------------------------------- // input_ports - device-specific input ports //------------------------------------------------- ioport_constructor qimi_device::device_input_ports() const { return INPUT_PORTS_NAME( qimi ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // qimi_device - constructor //------------------------------------------------- qimi_device::qimi_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, QIMI, tag, owner, clock), m_write_extint(*this), m_buttons(*this, "mouse_buttons"), m_status(0), m_extint_en(false) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void qimi_device::device_start() { // resolve callbacks m_write_extint.resolve_safe(); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void qimi_device::device_reset() { m_status = 0; m_extint_en = false; } //------------------------------------------------- // read - //------------------------------------------------- uint8_t qimi_device::read(offs_t offset, uint8_t data) { switch (offset) { // button status case 0x1bf9c: data = m_buttons->read(); break; // direction status case 0x1bfbc: data = m_status; break; case 0x1bfbe: m_status &= ~(ST_Y_INT | ST_X_INT); m_extint_en = true; m_write_extint(CLEAR_LINE); break; } return data; } //------------------------------------------------- // write - //------------------------------------------------- void qimi_device::write(offs_t offset, uint8_t data) { (void)data; // write to 0x1bfbe resets int status if (offset == 0x1bfbe) { m_status &= ~(ST_Y_INT | ST_X_INT); m_extint_en = true; m_write_extint(CLEAR_LINE); } }