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Diffstat (limited to 'src/devices/bus/cgenie/parallel/printer.c')
-rw-r--r-- | src/devices/bus/cgenie/parallel/printer.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/devices/bus/cgenie/parallel/printer.c b/src/devices/bus/cgenie/parallel/printer.c new file mode 100644 index 00000000000..f9963844dd5 --- /dev/null +++ b/src/devices/bus/cgenie/parallel/printer.c @@ -0,0 +1,132 @@ +// license:GPL-2.0+ +// copyright-holders:Dirk Best +/*************************************************************************** + + EACA Colour Genie Printer Interface EG2012 + +***************************************************************************/ + +#include "printer.h" + + +//************************************************************************** +// CONSTANTS/MACROS +//************************************************************************** + +#define VERBOSE 0 + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type CGENIE_PRINTER = &device_creator<cgenie_printer_device>; + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( cgenie_printer ) + MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer") + MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(cgenie_printer_device, busy_w)) + MCFG_CENTRONICS_PERROR_HANDLER(WRITELINE(cgenie_printer_device, perror_w)) + MCFG_CENTRONICS_SELECT_HANDLER(WRITELINE(cgenie_printer_device, select_w)) + MCFG_CENTRONICS_FAULT_HANDLER(WRITELINE(cgenie_printer_device, fault_w)) + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("latch", "centronics") +MACHINE_CONFIG_END + +machine_config_constructor cgenie_printer_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( cgenie_printer ); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// cgenie_printer_device - constructor +//------------------------------------------------- + +cgenie_printer_device::cgenie_printer_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, CGENIE_PRINTER, "Printer Interface EG2012", tag, owner, clock, "cgenie_printer", __FILE__), + device_parallel_interface(mconfig, *this), + m_centronics(*this, "centronics"), + m_latch(*this, "latch"), + m_centronics_busy(0), + m_centronics_out_of_paper(0), + m_centronics_unit_sel(1), + m_centronics_ready(1) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void cgenie_printer_device::device_start() +{ +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void cgenie_printer_device::device_reset() +{ +} + + +//************************************************************************** +// IMPLEMENTATION +//************************************************************************** + +WRITE_LINE_MEMBER( cgenie_printer_device::busy_w ) +{ + m_centronics_busy = state; +} + +WRITE_LINE_MEMBER( cgenie_printer_device::perror_w ) +{ + m_centronics_out_of_paper = state; +} + +WRITE_LINE_MEMBER( cgenie_printer_device::select_w ) +{ + m_centronics_unit_sel = state; +} + +WRITE_LINE_MEMBER( cgenie_printer_device::fault_w ) +{ + m_centronics_ready = state; +} + +void cgenie_printer_device::pa_w(UINT8 data) +{ + if (VERBOSE) + logerror("%s: pa_w %02x\n", tag(), data); + + m_latch->write(data); +} + +UINT8 cgenie_printer_device::pb_r() +{ + UINT8 data = 0x0f; + + data |= m_centronics_ready << 4; + data |= m_centronics_unit_sel << 5; + data |= m_centronics_out_of_paper << 6; + data |= m_centronics_busy << 7; + + return data; +} + +void cgenie_printer_device::pb_w(UINT8 data) +{ + if (VERBOSE) + logerror("%s: pa_w %02x\n", tag(), data); + + m_centronics->write_strobe(BIT(data, 0)); +} |