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Parallel cable for PC-PC connect

Posted on 1999-01-08
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Last Modified: 2010-04-30
I want to use the PC direct connect with Win 95. But always the program says cable disconnected.
It works well under DOS with interlink.
All I find is thomesing about an "active" cable to connect the computers. What is this and can I make it myself?
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Question by:nob
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Expert Comment

by:dpuckett
ID: 1132902
I have several comments for you, let me know if you'd like me to post as the answer.

If the cable works under dos with interlink, then it may not be a cable problem.
in order to xfer high speed data betwix parallel ports you normally use EPP or ECP ports, if it works under dos then maybe your win'95 settings are disabling this functionality.

The parallel-to-parallel cable is used by DOS's INTERLNK program. Laplink and FastLynx cables are the same. The pin-to-pin connection between two male 25-pin
D-sub connectors is: 2-15, 3-13, 4-12, 5-10, 6-11, and the reverse: 15-2, 13-3, 12-4, 10-5, and 11-6, and 25-25. This requires eleven wires. If you
have spare wires, link some extra grounds together. Pins 18 to 25 inclusive are grounds. A very long cable may be unreliable; limit it to 5 metres, preferably less.

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Expert Comment

by:arelyea
ID: 1132903
I have tried and tried to do just that.  I do not think it is possible to get DOS and Win95 to network via Parallel port (I could, of course, be incorrect)

Tony.
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Accepted Solution

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dpuckett earned 50 total points
ID: 1132904
If the cable works under dos with interlink, then it may not be a cable problem.

in order to xfer high speed data betwix parallel ports you normally use EPP or ECP ports, if it works under dos then maybe your win'95 settings are disabling this functionality.

The parallel-to-parallel cable is used by DOS's INTERLNK program. Laplink and FastLynx cables are the same. The pin-to-pin connection between two male 25-pin D-sub connectors is: 2-15, 3-13, 4-12, 5-10, 6-11, and the reverse: 15-2, 13-3, 12-4, 10-5, and 11-6, and 25-25. This requires eleven wires. If you have spare wires, link some extra grounds together. Pins 18 to 25 inclusive are grounds. A very long cable may be unreliable; limit it to 5 metres, preferably less.

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Author Comment

by:nob
ID: 1132905
Well, in the meantime it works quit well. At last it was an software problem: Protocol mismatch.
Actually in my environment it works only! with the send-only option in the BIOS, neither bidirectional nor ECP nor EPP.
To arelyea: It is possible between DOS and Win95 by using interlnk from DOS. Just set it in normal way in the config.sys
But it is no good solution and lowers performance of Win95.
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