Bob Axtell wrote : > About 8 years ago, I designed some twisted-pair casino networks. [snip...] Interesting, but I'm not sure how it relates to the RS485 specifications ? Did it use RS485 ? Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist