The question is "what is the criteria for declaring "bad contact" on the 40Pro. It is your hardware.

Our fixture has a few pins that are not connected to the DIP40 and we would like to add a load to these pins to eliminate the need to ignore bad pins. I expect it is some R value to ground. I tried 100k ohm and still received errors.

Thanks

Dataman: 40 Pro Device: Atmel AT89C52 (VPP=12V) Package: PLCC44 The device programs, verifies, reads, and erases when the supplied DIP40/PLCC44 fixture is used. Our custom DIP40 to PLCC44 socket fixture does not have P3.0 to P3.5 (PLCC44 pins 11 to 17). P3.0 and P3.1 are RXD and TXD. In accordance w...