I guess you have a program blowing up and suspect the stack being the cause. The simplest way to see if a blowup is due to stack overflow is to simply write "STACKSTACK..." into the stack area, and let the ICE run. then when your program blows up see if you have at least "CK" left. This is ONLY useable as a dignostic when stack overflow is suspected as the cause of an error that DOES happen, it has no other value.