I am getting the following error: monitor error 3 - cannot write to ROM area E7004A I had been using the monitor program to debug my code before. The error message seems to be specific to my having added one more function! There is nothing wrong with that function it is a copy and paste of another with a different name is all! What could be wrong? External memory settings are: ROM 0 - 10000 RAM 10000 - 30000