Yes I realized that's what you meant after responding. I am presently in a test environment and just using a LED bar graph type and pushing +/-5mA
My final product will probably have transistors for each row/col.
If I can just understand how to code using BAM, the rest will be simple. I have read many websites about BCM/BAM but for some reason I am not getting it. I have yet to find the one explanation that will have probably just a slight difference in the way it is explained that I will understand.

I don't want to just copy some code to make it work, I want to understand and manipulate this at ease.

Mike