I use the LPC2294, make a project with ARTX and use the ULink to debug. In the Startup.s, the default VPB Clock=CPU Clock/4, when I change it to 'VPB Clock=CPU Clock', then the problem come. After I push the button of 'Start/Stop Debug session' the program load to the flash and get the error 'Couldn't stop ARM device! Please check the JTAG cable'. But After I erase the 2294, I set the 'VPB Clock=CPU Clock/4' and Debug again, no such problem. So I want to know whether the ARTX support 'VPB Clock=CPU Clock'? Or the Ulink don't support 'VPB Clock=CPU Clock' whe use the ARTX?
I doubt that this problem refers to ARTX. But if so, that means if we choose ARTX the VPB clock must be CPU clock/4, not more and not less? Can keil fix this problem?