Hi Steve:

Thanks for the suggestions and the code. I am just building my proto type board, and so far, I have the LCD working and 2 dual segment 7 segment displays running off a MAX7219. That is all that is working at this time. I am trying to get the i2c working next.

I do not have the rs232 link working yet, so I can't implement your suggestion below.

I have confirmed the SDA and SCL connections at the IC with a meter on the pin while single stepping the code. I am getting 2.03 volts at both SDA and SCL and I do have a 4k7 resistor on each line.

The ICD 2 is both my debugger and my programmer and it is my only interface to the 16F877a at the moment.

I will check all the wiring as I have prewired the DS1307 and DS1631 sockets. They checked out with a meter when I tested SDA and SCL, but I will have a close look again.

thanks

tim