>Perhaps we are talking about the same thing, but describing it differently? Probably, but not quite. I did mine in a '57 for a CATV settop box. Later moved the code to a '73 (because of growing needs elsewhere) but retained the same implementation. This runs off the time-of-day clock. I use the same thing in the FMA Einstein (www.fmadirect.com) and in general just about everywhere. It is very deterministic to do it this way. It receives IR, tracks time (to 2 seconds per month subject to xtal), processes IR requests, washes the carpet, etc. all in a '57. And it takes no CALLs (now _that's_ determinism). Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================