Jeez I'm confused and I know nothing about TinyBasic, but if you have two arrays of data, one in the AVR RAM and the other in external RAM write a loop that scans the AVR array and compares it with the external array, one byte at a time, similar to what you did in the first post.
You cannot use the = operator (well you could if you overload it but that's out of your league I think).
only if TinyBASIC would still work by using this method which I am not sure about)
What does TB have to do with this? Is this a C question or a TB question? Does the code have to be written in TB?
need a method to make an internal array equal the external SRAM array without bringing the data in
Now I'm even more confused, do you want to move the AVR data to the external RAM (or VV)?
Rob