At 11:22 AM 2/23/97 -0800, you wrote: >This is pretty long... > >I have two boards with 16c63 parts connected to LTC485 485 drivers. Pin C5 >is used to enable the driver. The receiver is enabled at all times. Is your 485 connection terminated properly? Andy ================================================================== Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 Hardware & Software for Industry & R/C Hobbies "Go fast, turn right, and keep the wet side down!" ==================================================================