The TI example boot_serial is linked to run in RAM and is flashed into address 0x00000000. None of this was changed by me. I went back and imported the TI boot_serial example from the ek-tm4c1294xl board directory. Using it as-is with the ICDI debugger, it works great. When I change the debugger to XDS200 SWD and try to connect to my board. That's when it stops working. In fact, I could not even get it to download the program into flash (and I can't remember what I did to get it to work on my setup). (and the debugger does work on my board) I imagine this would be easy to reproduce at TI or by anyone with an XDS200 and a TM4C129xx connected as SWD. Maybe?
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