Hi, I have this funny problem that my complied program does not work for code size beyond ~3600. However, it is working for the EPM900 emulator and this code size is still less than the 4KB on my LPC930. Other details: 1) Stack should not be a problem since there is another ~128B it on my LPC930 device. 2) I am using uVision2 and 3 and both exihibit the same issue. 3) Example of usable program size: data=129.0 xdata=0 code=3517 Anyone has any ideas?