Children/Fantasy Movie from the late 80s early 90s
I'm trying to find this one movie that I used to watch when I was like three. I don't remember much but I'm pretty sure its is from the early 90s. It starts with a boy on his front stoop in a city. And he finds out that his dad was a king or prince of some fantasy land. Im pretty sure his dad gets killed. Some how the gets into the land and the boy tries to become king. I think he met another boy who helps and he has a horse. And at the end the boy fights the sorcerer who has crystal ball that lights up and floats around the room. And I think that the boys wins the fight. Does any one has some sort of idea about the title of this movie I'm talking about. Thanks