Hi, I am using Ulink2 and Keil MDK realview to debug the st32f100c6 chip via SW interface. The program counter does not show in application window, it just shows on disassembly window. I have put some breakpoint in the C program and the program stop at the breakpoint but still does not show program counter (yellow arrow). Then I try to use "step over" command and the program counter steps to the next ASM instruction, not the next C instruction line. I try to turn off the disassembly windows but there is no use. Any body has any suggestion?