Macintosh Pascal was discontinued many years ago. The latest version shipped
by Apple was version 2.1. Although we no longer ship it, we continue to
support the product (though we rarely get any questions on it since most people
have migrated to newer products).
There are many substitutes, including Think Pascal from Symantec, which could
be used in conjunction with an interactive tutorial called Just Enough Pascal,
also from Symantec (these, as well as others, are described in the buyer's
guides on AppleLink).
We'll update the article "Macintosh Pascal Is Discontinued But Supported" in
the Tech Info Library with this information.