So, I wound up rewriting this routine commencing at 0x41B64 to only use hard coded constants for all the things: 464DE 4DFA 0006 Lea.L DT132, A6 ; load tackle of another instruction into A6, to be used as being a return vector Cleanse install of windows, clear set up of https://www.gameonlineonline.com/game/boots-n-bounds