I am a realist and do thus know that if the programmer (for now me) is to manually keep track of in which part of memory variables are stored intermittent problems WILL occur. I am, thus, looking for a means such as an "EDATA" qualifier with a compiler or maybe a means of manhandling the Keil bankswitching to do the job for me.
Martin, your method has the deficiency that it relies on testing, testing does NOT prove that a program is bug free, it only show the abscence of known bugs.

Thanx

Erik