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Using of parity bit in RS232 in Linux

Hi All!

I need to detect the corrupted serial data in my program.
I have set the c_lflag to ISIG in termios structure, but no signals are
being sent to my program.
What signal does the serial driver send when parity or overrun error occurs?
How to manage these signals?
Where can I find more info? (I've already checked the
HOWTO/Serial-Programming, but it didn't help).
	                      Wojciech M. Zabolotny
	http://www.ise.pw.edu.pl/~wzab  <--> wzab@ise.pw.edu.pl

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