Each game consists of a cart and a CD having various codes needed to identify them. Carts and CDs have
both a different Part # printed on their front/top side that includes the game cart/CD code and ends
respectively with 00F/000 for all Japan releases and with A0F/0A0 for all the other ones. Therefore,
the part # can be used only to identify Japan releases and further parameters need to be introduced.
The cart is responsible for the game region that can be identified by a label with colored characters
and a code printed on the back side. The antepenultimate character of the label code and the colour of the
sticker vary by region, exactly as happens on the boot screen when the board is powered on. There are two
types of carts. Some require the CD to boot, some don't since the game is already loaded into the SIMMs.
Both types are externally identical and use the same codes, so the only way to distinguish them is to dump
the flashROMs. The game region and CD/NO CD flags are controlled by two different bytes in the flashROM.
The CD (and SIMMs too if the cart is of type NO CD) contains the game revision that can be identified
by two codes, the catalog # and the label. The catalog # is the identifying code printed in the mirror
ring on the top side close to the CD's center while the label is the code appearing on the CD icon when
it's inserted into a PC CD drive. It has been verified that the catalog # and label are the same for
some games but quite different for some others, so it's better to check both to avoid confusion. It
has also been verified that the catalog # and label (and the data on CDs) don't change between regions,
only between revisions. However, knowing one of them and comparing it with the table above will help
to understand if a new game revision has been discovered. Current CD dumps have been documented using
the catalog # as name, since the label is already included into the images used to generate CHDs.
