Hi, machine/param.h has this: #define ALIGN(p) (((unsigned)(p) + ALIGNBYTES) & ~ALIGNBYTES) Shouldn't that be uintptr_t? Can this include <stdint.h>? -- Joel Sherrill, Ph.D. Director of Research& Development joel.sherrill at OARcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (256) 722-9985