Thank you very much to EVERYONE who posted. You all have been very helpful. @Bob Axtell, Harold Hallikainen: This is exactly how I imagined the single master bus would work. Now I gotta impliment the multi master protocol. Your ideas are really helpful. Thank you. @Brent Brown: That logic is awesome. Into my circuit it goes. @Gerhard: I'll find it :) @Richard Prosser: Thanks. I'll avoid using the circuitry though, until I get more proficient with "that kind" of electronics. -- [ solarwind ] -- http://solar-blogg.blogspot.com/ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist