Originally posted by Spinjumper
actually, if I could change that and the regular triangle so that it requires no speed and can work for going down as well, I might be able to do it
You need ASM, which I don't think you know.
And, IIRC, if you want Mario to stay in the same spot on the screen (it looks like the planet is turning), you'll need to tap into Mode 7. At least someone told me that.