Is this a project you are doing profesionally? ie, will you have the opportunity to release your final design, or enough of it to be useful to others? -Adam Byron A Jeff wrote: > > This is what I want to explore. IP and UDP are extremely simple if you are > not a router. Just specify the IP number and port number of the target and > package up your data. SLIP, unlike PPP, is just dropping raw IP packets on the > serial line with 2 characters out of 256 escaped. Most of both the IP and the > UDP packet is fixed (all the source, could fix the target port) with the > only variable part being the target IP and the data. > > I agree that TCP is too much to handle. But UDP's simplicity of just wrapping > the data in a simple envelope should be simple enough to put in a 12CXX part. > > BAJ