Board Thread:General Discussion/@comment-50.149.218.145-20140707180241/@comment-14600979-20140707183011

You want to use SPSET a just before you use the sprite, and SPOFS generally in a subroutine executed every cycle from the main loop, if it's something like an enemy that is updating all the time. If you aren't moving it all the time, it could just be in something that executes when something happens (using IF -- THEN GOSUB @--)