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From: "Alexei A. Frounze" <alexfru AT chat DOT ru>
Newsgroups: comp.os.msdos.djgpp
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Subject: Re: RS232 transmission sometimes fail on AM2
Date: Mon, 23 Jul 2007 08:29:30 -0700
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Robbo wrote:
> Thank you very much for your answer.
>
> I spent one day long to see, what is wrong.
> As I have said earlier, there is a computer
> which communicates with special electronic device.
> The electronic device consists of a microcontroller
> and MAX202ECPE (it converts TTL to RS232).
> MAX202ECPE has different resistance of one of
> its pins that MAX232N which I had been using before.
> And it causes that it is more sensitive to any noises.
> When I replaced it back to MAX232N, everything works well.
>
> According to your suggestions about my UART code,
> thanks for them.

Quite possible, though never occurred to me. Interesting, if the chip defect 
was there already or the chip was damaged/overheated while soldering...

Cheers,
Alex