Did you buy your computer after January 1982? If so, look for a "G" sticker on
your console carton. This means you have the new GTIA chip (see page 13). Also
look for a yellow "C" sticker and a blue "DS" sticker on your disk drive carton.
These two stickers indicate that you have the new fast format ROM C chip and a
data separator circuit. With with the addition of these electronic parts your
disk drive will load programs faster and be more reliable. THANKS ATARI!!