Hi, I have a 64-bit mips cpu, and compiled a 64-bit application, but this application could not run. (the target is running Linux) The details is: 1)if I compile the application with -mabi=n64, this program could not run, when I run it in the shell, it prompts "command not found" 2)but if I compile the application with -mabi=n32, it runs well and gives the correct result. I am wondering why with "-mabi=n64", this program could not run? I checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1, it seems that in User Mode, it accepts 64-bit operation. Anybody could give me some help? Any comments is much appreciated!! BR/Dominic