ROM image letters/code meaning

Hi. Does anyone have a know where to get an extensive list of codes/letters on ROM's and their meaning? For example, (U) means it's US. (p) means pirated.I know that cowering's goodtools offers a list, but it's not complete. For example, I don't know what [As] is.

That is pretty extensive.However, it's still missing a lot of ROM tags. Like As and KC.

if its not on that list we probably don't use it.