Brusque wrote: > > Go to Circ.Cellar4s web site, and try to search for it. > > I will chek in my files, cause I think have the pdf. > if you find it, please send to me off-list. Are you thinking of this one? As far as I know, it has never been available on-line; you'll have to order a back issue or a CDROM. Issue: 21 Jun/Jul 1991 Page: 38 Author: Jim Butler Title: A Simple RS-485 Network Subtitle: Exploit the Nine-Bit Serial Communication Modes of the 8051, 8096BH, 68HC11, 68HC05, and Z180 Microcontroller Families Abstract: RS-485 is a perfect standard for networking controllers. A solid strategy for network design makes the job easier, and the result more powerful. -- Dave Tweed Circuit Cellar archivist -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics