// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** COMX-35 Serial/Parallel Printer Card emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "printer.h" #include "bus/centronics/image.h" //************************************************************************** // MACROS/CONSTANTS //************************************************************************** #define CENTRONICS_TAG "centronics" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type COMX_PRN = &device_creator; //------------------------------------------------- // 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 ); } //------------------------------------------------- // SLOT_INTERFACE( comx_centronics_printer ) //------------------------------------------------- SLOT_INTERFACE_START(comx_centronics_printer) SLOT_INTERFACE("image", CENTRONICS_PRINTER_IMAGE) //SLOT_INTERFACE("pl80", COMX_PL80) SLOT_INTERFACE_END //------------------------------------------------- // MACHINE_CONFIG_FRAGMENT( comx_prn ) //------------------------------------------------- static MACHINE_CONFIG_FRAGMENT( comx_prn ) MCFG_CENTRONICS_ADD(CENTRONICS_TAG, comx_centronics_printer, "image") 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_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); }