What a good game...
It's a homebrew which can be found in AtariAge forums
I need some help in finding it's RAM adress for X-Speed and X-Pos.!!!
1 successful RAM Adress I've found
08E6 : Jump frames Countdown(starts counting frames of airborne while in a jump)
Something related to X-Pos : OB9D (worked fine in the backyard area but doesn't work inside the castle