I have purchased 68881 math processer chips for sun 3-50's, and installed them, and they work fine. Is the 68882 pin compatable with the 68881? Does it work in 3-50's? Wayne Cripps wbc at DARTMOUTH.EDU wbc at sunapee.dartvax.uucp Bradley Hall, Dartmouth College, Hanover N.H. 03755 (603) 646-3198