On 11/26/06, Genome wrote: > > thanks You are correct.. Unfortunately I donthave control over this in c# > as > I was intending to use the other pins other than handshaking. and as of > now > this is not doable in .Net 2.0.. the problem is not on the PIC side but > rather on programming limitations in the PC side.. I'm sure there are > better > guys out there who have solved or came in contact with this kind of > problem.. > thanks.. Are you using a "proper" serial port or a USB converter? Keep in mind that any clever tricks you pull off with the CTS/RTS lines won't work if you ever hook up a USB converter... If you just want to use them for flow control there shouldn't be any problems... But there is sometimes as much as 100ms lag between setting RTS in software and the pin actually changing states if you use a USB converter. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist