I think you can use it directly in the 16C84. You only have to watch for the bank bits to be set correctly (STATUS,RP0). You usually run in problems with bank bits not set correctly and the wrong registers end up being written too. John Bellini -----Original Message----- From: Amr Ahmed A. [mailto:amr77@HOTMAIL.COM] Sent: Wednesday, July 01, 1998 9:42 AM To: PICLIST@MITVMA.MIT.EDU Subject: How convert 16c54 code to 16c84 code? Hello I have downloaded a SSAVI decoder that uses PIC16C54 i have 16C84 pic. and i want to convert PIC16C54 code to PIC16C84 How that? Thanks, AMR ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com