Simplicity? - it has some many addressing modes. Pretty much forced into zero page+Y, but zero page is so limited. Direct code modification, i.e. counters withi

Simplicity? - it has some many addressing modes. Pretty much forced into zero page+Y, but zero page is so limited. Direct code modification, i.e. counters within the code was the next most common. Of course division was an art. That being said I enjoyed it alot and still know quite of the opcodes (hex) by heart + the clock count of many instructions.