At 05:49 PM 9/29/97 +1000, you wrote: >Hi all > >i have to implement X.25 packet radio protocol on PIC16C77. > >Any ideas or code would be much appreciated. > >thanks stressed out honors student Hi, If you get any code for generating the checksums, I'd appreciate a copy. Meanwhile, try the TAPR web site at http://www.tapr.org/ Then go to the TAPR FTP AREA, select GENERAL and look for AX25.DOC, which gives the specs for AX25. Hope this helps, Dave, N9LTD