// license:GPL-2.0+ // copyright-holders:Dirk Best /*************************************************************************** VTech Laser/VZ Printer Interface VTech PI 20 Dick Smith Electronics X-7320 ***************************************************************************/ #include "emu.h" #include "printer.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(VTECH_PRINTER_INTERFACE, vtech_printer_interface_device, "vtech_printer", "Laser/VZ Printer Interface") //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void vtech_printer_interface_device::device_add_mconfig(machine_config &config) { CENTRONICS(config, m_centronics, centronics_devices, "printer"); m_centronics->busy_handler().set(FUNC(vtech_printer_interface_device::busy_w)); OUTPUT_LATCH(config, m_latch); m_centronics->set_output_latch(*m_latch); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // vtech_printer_interface_device - constructor //------------------------------------------------- vtech_printer_interface_device::vtech_printer_interface_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, VTECH_PRINTER_INTERFACE, tag, owner, clock), device_vtech_ioexp_interface(mconfig, *this), m_centronics(*this, "centronics"), m_latch(*this, "latch"), m_centronics_busy(0) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void vtech_printer_interface_device::device_start() { } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void vtech_printer_interface_device::device_reset() { io_space().install_read_handler(0x00, 0x00, read8_delegate(FUNC(vtech_printer_interface_device::busy_r), this)); io_space().install_write_handler(0x0d, 0x0d, write8_delegate(FUNC(vtech_printer_interface_device::strobe_w), this)); io_space().install_write_handler(0x0e, 0x0e, write8_delegate(FUNC(output_latch_device::bus_w), m_latch.target())); } //************************************************************************** // IMPLEMENTATION //************************************************************************** WRITE_LINE_MEMBER( vtech_printer_interface_device::busy_w ) { m_centronics_busy = state; } READ8_MEMBER( vtech_printer_interface_device::busy_r ) { return 0xfe | m_centronics_busy; } WRITE8_MEMBER( vtech_printer_interface_device::strobe_w ) { m_centronics->write_strobe(1); m_centronics->write_strobe(0); }