The AN589 will may be used to program most of the serial parts. The 16F84 is very similar to the 16C84. Write protect bit is inverted is the only important programming change. Kieran ---------- From: DAX[SMTP:dax10@USA.NET] Sent: 14 May 1997 08:20 To: PICLIST@MITVMA.MIT.EDU Subject: Programing 16F84 i want to know if I can program PIC 16F84 with AN589 circuit. Tanks.