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Error on port COM1 using MS-DOS


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#1 Point86

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Posted 18 April 2018 - 06:01 PM

I have a PC running MS-DOS 6.22 . This computer is connected to a laptop with a nullmodem cable. Sending data via serial port with the command:
echo 55 > COM1
always give the error:
Write fault error writing device com1 Abort, Retry, Ignore, Fail?

But if i write data directly on the serial port address (with Debug.exe) or i use a linux live CD i can transmit data to the other PC, without problems.

Is this normal? What can be the problem?



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#2 Platypus

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Posted 18 April 2018 - 06:37 PM

This discussion may be relevant:

 

https://www.techrepublic.com/forums/discussions/sending-a-file-to-com1-using-dos-622/


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#3 Point86

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Posted 18 April 2018 - 07:51 PM

thank you!!! it was  the same exact problem..   sorry for starting a new topic!!



#4 Platypus

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Posted 18 April 2018 - 08:35 PM

I'm not understanding - a new topic?

 

Does that mean modifying the null modem cable solves the issue?


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