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LPT1 pins

I cann't connect my computer to another one, either with Windows nor with DOS: "Connection not established".
I tested my connection cable, and it is good.
I think there is something wrong in the parallel connector on one of the computers, but I can print without problem.

I want to know whether all pins are used for printing.
There are 25 pins: where can I find the use of each?

Comments

  • retrogeekretrogeek Posts: 93Member
    : I cann't connect my computer to another one, either with Windows nor with DOS: "Connection not established".
    : I tested my connection cable, and it is good.
    : I think there is something wrong in the parallel connector on one of the computers, but I can print without problem.
    :
    : I want to know whether all pins are used for printing.
    : There are 25 pins: where can I find the use of each?
    :


    http://204.210.50.240/techref/io/parallel/port.htm



  • melissa_may1melissa_may1 Posts: 937Member
    : I cann't connect my computer to another one, either with Windows nor with DOS: "Connection not established".
    : I tested my connection cable, and it is good.
    : I think there is something wrong in the parallel connector on one of the computers, but I can print without problem.
    :
    : I want to know whether all pins are used for printing.
    : There are 25 pins: where can I find the use of each?
    :

    Hi!

    Two similar questions! Somebody else posted about LPT to LPT connections.

    It sounds like you're trying to something different, though. What software are you trying to use to communicate with? Either DOS or Windows, I forget which, had a parallel communications comand and/or software at one time. You had to use a special cable, commonly called "Laplink" cable named after the popular software that enabled one to transfer files to/from two PCs connected via LPT ports.

    Try re-posting with more info...

  • JulienJulien Posts: 13Member
    The above answer is good: I found there many links and explanations to
    understand the LPT1 port.

    More details about my problem:
    PC "A" is fat16. I boot it with the Win95 EBD
    PC "B" is fat32. Booted with the Win98 EBD.
    "A" and "B" are connected with a Laplink cable (I tested each pin)
    through LPT1's
    Interlnk.exe and intersvr.exe are in C: of both computers

    As I want "A" to be client, I added
    device=c:interlnk.exe
    to its config.sys.

    I boot "B" first with the win98 EBD: I type C:intersvr. A small list
    of server drives is displayed.

    Then I boot "A" with the Win95 modified EBD. While booting, this
    message is displayed (I translate):
    Connection not established
    Drive letters to be assigned: 3 (D: through F:)
    Printer port to be assigned: 2 (LPT2: through LPT3:)
    (MSD shows only LPT1: on my computers)

    If I type c:>interlnk, I am prompt:
    Connection not established
    Verify that a serial/parallel cable connects server and client,
    and that intersvr.exe is run on server.

    Is there mistake in that procedure?

    Well, I bought my cable recently as a Laplink one. Now, I am not sure
    it's a null modem cable.
    On it, I read:
    E119932 AWM 20276 80C 30V VW-1 COPARTNER IEEE 1284-1994 COMPLIANT
    How can I know whether it is a null modem cable?



    :

  • melissa_may1melissa_may1 Posts: 937Member
    Hi!

    : Is there mistake in that procedure?

    Well, I haven't done this in a while, but your explanation looks
    good. I don't think the commands are the problem.

    I'm concerened that it doesn't list LPT1 as available...are you sure it's working?

    : Well, I bought my cable recently as a Laplink one. Now, I am not sure it's a null modem cable.
    : On it, I read:
    : E119932 AWM 20276 80C 30V VW-1 COPARTNER IEEE 1284-1994 COMPLIANT

    : How can I know whether it is a null modem cable?

    OK. You do know that a null-modem cable will not work. Only a laplink cable. I think there's a readme.txt or other information about intsvr that tells you how to make up the cable.

    However, the "IEEE 1284-1994" usually refers to a printer cable, so I'm not sure you have the right one. But you checked the pins? With what? I mean with what pinout diagram?

    The cable has two DB-25 Male connectors?

    Let us know...

  • retrogeekretrogeek Posts: 93Member
    : I cann't connect my computer to another one, either with Windows nor with DOS: "Connection not established".
    : I tested my connection cable, and it is good.
    : I think there is something wrong in the parallel connector on one of the computers, but I can print without problem.
    :
    : I want to know whether all pins are used for printing.
    : There are 25 pins: where can I find the use of each?
    :

    A couple more ideas --

    I vaguely remember that there is an issure with using interlink with windows 9x. Look through the windows help files on the CD.

    I suspect anyway, that interlink is not going to work on a fat32 system.

    Hope I am wrong. Good luck

    rg.


  • JulienJulien Posts: 13Member
    Hi Melissa,

    I found cable schmas at www.nullmodem.com
    My cable is not Laplink! It is direct (pin 1 to pin 1, 2 to 2...)
    This time, I bought a true Laplink cable, and connection with interlnk
    and intersvr works rather good.

    But the FAT16 Win95 PC cannot read the FAT32 one except its floppy
    (poor interest!) :-(
    Fortunately, the FAT32 PC can read the FAT16 one. Shared games are not
    possible, but file transfer is possible, and that was my purpose.

    Explaining one's difficulties often helps finding solution. Thank you
    for your interest and your help.

    Julien




  • JulienJulien Posts: 13Member
    You are right: Fat 16 system cannot read fat32 system, except its
    floppy! But Fat32 can read fat16

    : :
    :
    : A couple more ideas --
    :
    : I vaguely remember that there is an issure with using interlink with windows 9x. Look through the windows help files on the CD.
    :
    : I suspect anyway, that interlink is not going to work on a fat32 system.
    :
    : Hope I am wrong. Good luck
    :
    : rg.
    :
    :


  • melissa_may1melissa_may1 Posts: 937Member
    : This time, I bought a true Laplink cable, and connection with interlnk
    : and intersvr works rather good.
    :

    Glad to see it works!


    : But the FAT16 Win95 PC cannot read the FAT32 one except its floppy

    Maybe you could convert them both to FAT32? I didn't think that the FAT16/32 would be a problem.

    : Explaining one's difficulties often helps finding solution.

    Yes. Sometimes I solve my own problems when I explain the situation to somebody else!

    Thank you for your interest and your help.

    No problem. That's what we're here for. If you really want to send thanks, come back and see if you can help someone else!


    Seeya,

    Melissa


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