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86Box-docs/settings/ports.rst
RichardG867 2b88a78e26 Release v4.0
2023-08-26 21:00:07 -03:00

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.. include:: /include.rst
|ports| Ports (COM & LPT)
=========================
The **Ports (COM & LPT)** page contains settings related to the emulated machine's I/O ports.
LPT1-4 Device
-------------
Emulated device to connect to the given parallel (LPT) port.
* **None:** no device connected.
* **Disney Sound Source:** sound device with a resistor ladder DAC (digital-to-analog converter) and FIFO, supported by many games.
* **LPT DAC / Covox Speech Thing:** sound device with a simple resistor ladder DAC, supported by many games (through compatibility with the *Disney Sound Source* above), demos and trackers.
* **Stereo LPT DAC:** stereo version of the LPT DAC, using the *Strobe* pin to select the active output channel.
* **Generic Text Printer:** simple printer capable of outputting text only.
* Printed documents are saved as .txt files in the ``printer`` subdirectory found in the emulated machine's directory.
* **Generic ESC/P Dot-Matrix:** EPSON ESC/P-compatible printer.
* Printed pages are saved as .png files in the ``printer`` subdirectory found in the emulated machine's directory.
* Use the **EPSON LQ-2500** printer driver for best results.
* **Generic PostScript Printer:** PostScript-compatible printer with PDF output.
* Printed documents are saved as .ps files in the ``printer`` subdirectory found in the emulated machine's directory. These files are automatically converted to .pdf once printing is completed.
* The original .ps files may remain in the directory if PDF conversion fails, or (on Windows hosts) if the included ``gsdll32.dll`` or ``gsdll64.dll`` file is missing from the 86Box directory.
* Use the generic PostScript printer driver provided by your operating system.
* Windows 95 and newer do not have a generic PostScript driver; use the **Apple LaserWriter IIf** driver for grayscale, or the **Apple Color LW 12/660 PS** driver for color.
* **PLIP Network:** A `Parallel Line Internet Protocol <https://en.wikipedia.org/wiki/Parallel_Line_Internet_Protocol>`_ cable connected to the :doc:`emulated network <network>`.
* The :ref:`emulated network adapter <settings/network:Adapter>` must also be set to **[LPT] PLIP**.
* PLIP is compatible with the DOS ``plip.com`` packet driver and the Linux ``plip`` driver (only with interrupts enabled). It is not compatible with the Windows *Direct Cable Connection* feature or any other parallel port networking implementations.
* PLIP works best with the **SLiRP** :ref:`network type <settings/network:Mode>` due to its point-to-point nature.
Serial port 1-4
---------------
Enable emulation of serial ports ranging from COM1 to COM4. Any ports not provided by the machine's motherboard will be emulated as generic ISA or VLB serial cards.
Parallel port 1-4
-----------------
Enable emulation of parallel ports ranging from LPT1 to LPT4. Any ports not provided by the machine's motherboard will be emulated as generic ISA or VLB parallel cards.
.. note:: The 4th parallel port is not widely supported. It is located at I/O port 268h.
Serial port passthrough 1-4
---------------------------
Connect emulated serial ports to named pipes or serial ports on the host. Each instance corresponds to one of the 4 emulates serial ports.
The *Configure* button next to each passthrough instance opens a new window with settings specific to it, such as the named pipe or serial port to use.
.. note:: Passthrough will not operate correctly if the selected serial port is taken by a :ref:`serial mouse <settings/input:Mouse>`.