Hi Ralf, In the DEMO programs, I found many occurrences of the following two lines: { Disable FPU exceptions. No need to restore, setting is process specific. } Set8087CW($133F); What problem does that function call solves? Should I add this line to my program? Thank you. -- Best Regards, Edwin Yip Mind Mapping is as Effortless as Typing http://www.InnovationGear.com