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Also, VC++ WriteFile returns a true, non-zero value.
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Also, VC++ WriteFile returns a true, non-zero value.

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Also, I tried &nbsp; type com.ini &gt;&nbsp;com1 &nbsp; that returns without error, but no data comes from any of the embedded computer's serial ports to the PC. The same NULL modem cable and the same command works when I replace the embedded computer with a notebook.
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Also, I tried   type com.ini > com1   that returns without error, but no data comes from any of the embedded computer's serial ports to the PC. The same NULL modem cable and the same command works when I replace the embedded computer with a notebook.

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I am running embedded XP on a Pentium Windows computer. After moving from Windows 98 to XP all serial comm from the serial port fails. WriteFile sets the correct number of characters written, but no output. &nbsp;I can remotely debug my program on the pentium machine with my PC, and WriteFile reports the correct number of chracters send, but nothing comes from the serial port. I have tried a NULL modem cable and a straight cable connection while running hyper-terminal on both machines with no luck at all. What are the issues in migrating serial comm from Windows 98 to XP? What do you think I should try to fix my problem? After 2 days I'm out of guesses.
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I am running embedded XP on a Pentium Windows computer. After moving from Windows 98 to XP all serial comm from the serial port fails. WriteFile sets the correct number of characters written, but no output.  I can remotely debug my program on the pentium machine with my PC, and WriteFile reports the correct number of chracters send, but nothing comes from the serial port. I have tried a NULL modem cable and a straight cable connection while running hyper-terminal on both machines with no luck at all. What are the issues in migrating serial comm from Windows 98 to XP? What do you think I should try to fix my problem? After 2 days I'm out of guesses.

XP and serial communications breakdown.

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