Sounds like its running in limp mode...
Are you sure you have the chip installed in the correct orientation? I'd comment on the hot part, but to tell the truth, I've never grabbed one of my chips while it was in use, for all I know they do get hot normally, lol
Oh, also try disabiling the checksum, I couldn't get any custom chips to work on my TPI becuase the checksum calculation in my definition file wasn't right...