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// 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")
//-------------------------------------------------
// io_map - memory space address map
//-------------------------------------------------
void vtech_printer_interface_device::io_map(address_map &map)
{
map.unmap_value_high();
map(0x00, 0x00).r(FUNC(vtech_printer_interface_device::busy_r));
map(0x0d, 0x0d).w(FUNC(vtech_printer_interface_device::strobe_w));
map(0x0e, 0x0e).w(m_latch, FUNC(output_latch_device::write));
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void vtech_printer_interface_device::device_add_mconfig(machine_config &config)
{
vtech_ioexp_device::device_add_mconfig(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, const XTAL &clock) :
vtech_ioexp_device(mconfig, VTECH_PRINTER_INTERFACE, tag, owner, clock),
m_centronics(*this, "centronics"),
m_latch(*this, "latch"),
m_centronics_busy(0)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void vtech_printer_interface_device::device_start()
{
vtech_ioexp_device::device_start();
// register for save states
save_item(NAME(m_centronics_busy));
}
//**************************************************************************
// IMPLEMENTATION
//**************************************************************************
WRITE_LINE_MEMBER( vtech_printer_interface_device::busy_w )
{
m_centronics_busy = state;
}
uint8_t vtech_printer_interface_device::busy_r()
{
return 0xfe | m_centronics_busy;
}
void vtech_printer_interface_device::strobe_w(uint8_t data)
{
m_centronics->write_strobe(1);
m_centronics->write_strobe(0);
}
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