One way that works with easyC Pro to use the new C source file feature that was just added this year.
Create a source file (go into the project tab, right click "Source Files" and create a file). In there put the definition of the array with the initialization:
Code:
rom const unsigned char L3[2] = {000,001};
Then edit the file UserInclude.h and insert an extern declaration for the array like this:
Code:
extern rom const unsigned char L3[];
Now you can use references to the L3 array in assignment statements or other expressions throughout your block-based easyC program. The only problem is that the array will not show up in the list of variables when you are creating expressions.