Thank you all for your responses regarding a RTC for 16C84... Sorry if I sounded like I was snip...snip...snipping. Between all of your contributions ... the most recent of which included: - Jordanis H.'s ... use a Dallas DS1494 TIC (Time-in-a-can) chip - Aaron S.'s ....... '54 source code for I2C - R. Ivanov's ...... referral to AN541 & AN554 for I2C info and offer of source code for I2C driver. (which would be gratefully accepted if it is handy) I think I've got plenty to work with! I hope to be contributing answers instead of questions in the near future. Best Regards, Dan Garlen Kg Systems, Inc. 12 Prospect Street Bloomfield, NJ 07003 | PHONE: 201-429-9300 / FAX: 201-429-2298 | EMAIL: kgsys@interactive.net ______________|