Bruce, Thanks for the info re. IOCAF bank switching in the handler. Actually, I don't think I need that line of code anyway. As stated in the header, the test program is for one-time use only. The circuit works correctly as is.

Hank, With two interrupt sources you would first go to the handler identified after DEFINE INTHAND. Once there, set up a test to determine which interrupt occurred by polling the interrupt flags. Then carry out the appropriate interrupt action. I have never done this, so maybe Bruce or Darrel could help with a better explanation.