diff options
Diffstat (limited to 'src/devices/bus/comx35/printer.cpp')
-rw-r--r-- | src/devices/bus/comx35/printer.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/devices/bus/comx35/printer.cpp b/src/devices/bus/comx35/printer.cpp new file mode 100644 index 00000000000..2f36fffd9bd --- /dev/null +++ b/src/devices/bus/comx35/printer.cpp @@ -0,0 +1,191 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + COMX-35 Serial/Parallel Printer Card emulation + +**********************************************************************/ + +#include "printer.h" +#include "bus/centronics/printer.h" + + + +//************************************************************************** +// MACROS/CONSTANTS +//************************************************************************** + +#define CENTRONICS_TAG "centronics" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type COMX_PRN = &device_creator<comx_prn_device>; + + +//------------------------------------------------- +// ROM( comx_prn ) +//------------------------------------------------- + +ROM_START( comx_prn ) + ROM_REGION( 0x2000, "c000", 0 ) + ROM_SYSTEM_BIOS( 0, "comx", "COMX" ) + ROMX_LOAD( "printer.bin", 0x0000, 0x0800, CRC(3bbc2b2e) SHA1(08bf7ea4174713ab24969c553affd5c1401876b8), ROM_BIOS(1) ) + ROM_SYSTEM_BIOS( 1, "fm12", "F&M v1.2" ) + ROMX_LOAD( "f&m.printer.1.2.bin", 0x0000, 0x1000, CRC(2feb997d) SHA1(ee9cb91042696c88ff5f2f44d2f702dc93369ba0), ROM_BIOS(2) ) + ROM_LOAD( "rs232.bin", 0x1000, 0x0800, CRC(926ff2d1) SHA1(be02bd388bba0211ea72d4868264a63308e4318d) ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *comx_prn_device::device_rom_region() const +{ + return ROM_NAME( comx_prn ); +} + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( comx_prn ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( comx_prn ) + MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer") + MCFG_CENTRONICS_ACK_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit0)) + MCFG_CENTRONICS_BUSY_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit1)) + MCFG_CENTRONICS_PERROR_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit2)) + MCFG_CENTRONICS_SELECT_HANDLER(DEVWRITELINE("cent_status_in", input_buffer_device, write_bit3)) + MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics") + + MCFG_DEVICE_ADD("cent_status_in", INPUT_BUFFER, 0) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor comx_prn_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( comx_prn ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// comx_prn_device - constructor +//------------------------------------------------- + +comx_prn_device::comx_prn_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, COMX_PRN, "COMX-35 Printer Card", tag, owner, clock, "comx_prn", __FILE__), + device_comx_expansion_card_interface(mconfig, *this), + m_centronics(*this, CENTRONICS_TAG), + m_cent_data_out(*this, "cent_data_out"), + m_cent_status_in(*this, "cent_status_in"), + m_rom(*this, "c000") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void comx_prn_device::device_start() +{ +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void comx_prn_device::device_reset() +{ +} + + +//------------------------------------------------- +// comx_mrd_r - memory read +//------------------------------------------------- + +UINT8 comx_prn_device::comx_mrd_r(address_space &space, offs_t offset, int *extrom) +{ + UINT8 data = 0; + + if (offset >= 0xc000 && offset < 0xe000) + { + data = m_rom->base()[offset & 0x1fff]; + } + + return data; +} + + +//------------------------------------------------- +// comx_io_r - I/O read +//------------------------------------------------- + +UINT8 comx_prn_device::comx_io_r(address_space &space, offs_t offset) +{ + /* + Parallel: + + INP 2 for the printer status, where: + b0=1: Acknowledge Fault + b1=0: Device Busy + b2=0: Paper Empty + b3=1: Device Not Selected + + Serial: + + INP 2 for the printer status and to start a new range of bits for the next byte. + */ + + /* + + bit description + + 0 Acknowledge Fault + 1 Device Busy + 2 Paper Empty + 3 Device Not Selected + 4 + 5 + 6 + 7 + + */ + + return m_cent_status_in->read(); +} + + +//------------------------------------------------- +// comx_io_w - I/O write +//------------------------------------------------- + +void comx_prn_device::comx_io_w(address_space &space, offs_t offset, UINT8 data) +{ + /* + Parallel: + + OUT 2 is used to send a byte to the printer + + Serial: + + OUT 2 is used to send a bit to the printer + */ + + m_cent_data_out->write(space, 0, data); +} |