Hi guys, I have data in 32 byte chunks, that's 256 bits total, and the transmission method I am using must transmit 258 bits per chunk. So I have 2 "spare" bits on each transmisison. Does anyone have ideas for using a simple checksum type system on the 32 bytes and using the 2 spare bits for error checking? I don't want mega security, just a simple quick efficient use of the two spare bits to check the 32 bytes was transmitted ok. :o) -Roman -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body