Read() from serial port

[ROLAND]

I am porting a program that uses Serial Communication
from UNIX to CYGWIN.
The program sends some data over the serial cable and
then goes into waiting-mode for an ACK/NACK package.
The old program did this with a call to read(), which
waits until there is something in the serial port
buffer.
For some strange reason my program now locks up when I
call upon read().
Can anybody tell me what the problem could be??

Roland


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