With our custom hardware and the ULINK2 adapter we get the message "Cannot access memory" when we try to download to flash. What does this this messages mean? The system is with a STM32F101C8 and the connections are checked and double checked. On the Development kit everything works like a charm.
Additional question: We intend to run with the internal oscillator only. Does the Keil toolchain demand that your system has an external oscillator?