hi. I'm trying to load eCos image via GDB ( on board Redboot is running ) >powerpc-eabi-gdb -nw install/eCos (gdb) set remotebaud 38400 (gdb) target remote /dev/ttyS0 Remote debugging using /dev/ttyS0 0xfe002640 in ?? () what's mean by " 0xfe002640 in ??" () ? thanks in advance. Tony.