On Tue, 13 Dec 2011, James Newton wrote: > According to the C standard, control is returned to the operating system.= ... That's for a "hosted" environment, like a PC. The PIC is a "freestanding" environment, about which the standard says, "The effect of program termination in a freestanding environment is implementation-defined." -- John W. Temples, III --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .