The manual says: "Stack size used by RTX kernel is configured in STARTUP.S. Minimum size is 128 bytes, however 256 bytes is recommended when interrupts are used." However the map file says: " 144 26 32 8 2128 2829 rtx_config.o 64 26 288 0 2128 720 startup_stm32f10x_md_vl.o" This shows that stack size is assigned twice: 1. 2128 by rtx_config.o 2. 2128 by startup_stm32f10x_md_vl.o What is wrong? donald