There's not a lot to say about the ASCII adjust instructions. I mention them in footnote 2. They are the same idea except they act on a single BCD digit. They a

There's not a lot to say about the ASCII adjust instructions. I mention them in footnote 2. They are the same idea except they act on a single BCD digit. They aren't specifically for ASCII, but if you ignore the upper nybble, ASCII digit characters match the BCD values.