Trying to figure out if my "homebrew" ICD is working. I'm using MPLAB 5.4 and the ICD 16f876 is programmed with the code that came with that release (2.30.01). Anyway, I've got communication with the ICD, but when I click on "options" then "self test", I get an error that says "incorrect MCLR pin high voltage. Check ICD pin 1.0xA7". Is this error because I don't have the ICD connected to a host, or do I have a problem with my circuit. BTW, I am getting 13 volts from the charge pump/regulator, and the power switching transistors seem to be working. I also checked the VPP signal to the 16F876 via the voltage divider. The voltage is correct there too. Can anyone give me some guidance? Thanks and regards, Mike M. Palm Harbor, FL -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics