I was wondering what, in hex, are the available user memory. I saw in SQRXZ the $4400s used to store variables. Any help will be appreciated. -Phelan 'Amen' Wolf PS: James... those toutorials are pretty damn good, they answered alot of questions. I was wondering if you knew the call for getting the size of a program, it probable would use the name in op1, and if you do know it where would it output it too, hl?