diff options
Diffstat (limited to 'src/devices/bus/vtech/ioexp/printer.cpp')
-rw-r--r-- | src/devices/bus/vtech/ioexp/printer.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/devices/bus/vtech/ioexp/printer.cpp b/src/devices/bus/vtech/ioexp/printer.cpp new file mode 100644 index 00000000000..a122c9fa2c7 --- /dev/null +++ b/src/devices/bus/vtech/ioexp/printer.cpp @@ -0,0 +1,93 @@ +// license:GPL-2.0+ +// copyright-holders:Dirk Best +/*************************************************************************** + + VTech Laser/VZ Printer Interface + + VTech PI 20 + Dick Smith Electronics X-7320 + +***************************************************************************/ + +#include "printer.h" + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type PRINTER_INTERFACE = &device_creator<printer_interface_device>; + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( printer_interface ) + MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer") + MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(printer_interface_device, busy_w)) + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("latch", "centronics") +MACHINE_CONFIG_END + +machine_config_constructor printer_interface_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( printer_interface ); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// printer_interface_device - constructor +//------------------------------------------------- + +printer_interface_device::printer_interface_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, PRINTER_INTERFACE, "Laser/VZ Printer Interface", tag, owner, clock, "printer", __FILE__), + device_ioexp_interface(mconfig, *this), + m_centronics(*this, "centronics"), + m_latch(*this, "latch"), + m_centronics_busy(0) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void printer_interface_device::device_start() +{ +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void printer_interface_device::device_reset() +{ + m_slot->m_io->install_read_handler(0x00, 0x00, read8_delegate(FUNC(printer_interface_device::busy_r), this)); + m_slot->m_io->install_write_handler(0x0d, 0x0d, write8_delegate(FUNC(printer_interface_device::strobe_w), this)); + m_slot->m_io->install_write_handler(0x0e, 0x0e, write8_delegate(FUNC(output_latch_device::write), m_latch.target())); +} + + +//************************************************************************** +// IMPLEMENTATION +//************************************************************************** + +WRITE_LINE_MEMBER( printer_interface_device::busy_w ) +{ + m_centronics_busy = state; +} + +READ8_MEMBER( printer_interface_device::busy_r ) +{ + return 0xfe | m_centronics_busy; +} + +WRITE8_MEMBER( printer_interface_device::strobe_w ) +{ + m_centronics->write_strobe(1); + m_centronics->write_strobe(0); +} |