The XEP1541 adaptor

Description

The XEP1541 adaptor serves as a pair of an XE1541 extended cable and an XP1541 or XP1571 parallel cable, allowing you to reuse your already existing Commodore serial cable and Commodore parallel cable. It's compatible with PS/2, EPP and ECP parallel ports and with Commodore 1541, 1570 and 1571 drives.

Hardware requirements

You need the following hardware to make use of this adaptor:

Software support

The following PC softwares fully support this adaptor:

For the list of softwares that partly support this adaptor, see the page of the XE1541 extended cable and the XP1541 and XP1571 parallel cables.

Important notes

  • Don't let the name "XEP1541" fool you. This adaptor also works with the Commodore 1570 and 1571 drive, not only the Commodore 1541 drive.
  • This adaptor in itself gives you no parallel capabilities. If your drive doesn't have it already then you should build the Commodore parallel cable first.
  • When designing and testing this adaptor, we kept having severe problems with the size and shape of this adaptor. At the end, we decided to build a relatively wide adaptor so that even wide user port plugs can be plugged onto it. However, exactly because of its width, it's possible that the adaptor will physically not fit the back of your PC because the case or other ports or cables are in the way. Therefore, before building it, you should have a look at the schematic diagram, indicating the shape and size of the adaptor, in millimeters. Cut it out from paper and check it against the back of your PC. Be warned that, even if it does fit, you might still have problems connecting cables to adjacent ports when this adaptor is plugged into the parallel port.
  • Unlike the user port in a real Commodore machine, this adaptor has no notches because those would make it too fragile. If your user port plug is coded, that is, it has sticks that fit into the notches of a real user port then this adaptor is, unfortunately, not for you.

Construction

You can find the details on how to build this adaptor at the construction page.

Usage

Take your already existing Commodore serial cable. Connect one serial plug into the serial port of your Commodore drive and the other serial plug into the serial port of the adaptor. Take your already existing Commodore parallel cable. If you have a parallel port on your Commodore drive then you can connect one end of the cable into it; otherwise the cable is, probably, just hanging out of the drive. Connect the user port plug onto the user port edge of the adaptor, being very careful not to do it upside down, that is, the top side of the user port plug should be levelled with that side of the adaptor with the plugs. Connect the parallel plug of the adaptor into the parallel port of your PC.

Make sure to put your equipment far away from monitors, TV sets and other devices with strong emission, otherwise cables may pick up interference and you may experience data loss or corruption.

Copyright

The XEP1541 adaptor is by Mr. Axel, 1998. The XE1541 extended cable is by Nicolas Welte and Wolfgang Moser, 1997. The XP1541 and XP1571 parallel cables are by Joe Forster/STA, 1997. If you produce and sell cables or adaptors that are compatible with this adaptor or the cables it implements then you must give credits to the respective copyright owners. If your adaptors are built onto printed circuit boards then you must also make the complete layout available in a format and resolution that is suitable for high quality reproduction.

Source: The Joe Forster-STA homepage

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