Charles: I don't think there is much to worry about. The first patents for I2C were issued late 1970's and thus expired. I was using the protocol in 1980 while at Signetics (Philips). - Wayne Foletta BMI - Saratoga, CA > ---------- > From: Charles Laforge[SMTP:cjoachim@HOTMAIL.COM] > Reply To: pic microcontroller discussion list > Sent: Sunday, January 11, 1998 7:41 PM > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: MORE... I2C protocol > > About those royalties.... > > What exactly does Philips own. I meen they came up with the protocol > I > know but can someone make a device which uses a different protocol > which > could be I2C compatible? It could go something like this... although > not I2C, this stuff is compatible with I2C devices. Ensure pull ups > are > used... blah blah.... Remember, these software routines are > mine... > blah blah... but they will talk to I2C devices. > > Just a thought. Philips would sue me for all I have... I know! Too > bad > the 8584 takes up so many I/O lines. > > Charles > >