Hello
I assume you took the project you have initially created for a HC12DP256 and just changed the register definition file, rebuild the application and try to debug.
Am I right?
You probably have the wrong MCU encoded in your project .ini file.
Can you try to replace your .ini file (probably P&E.ini if you have created your project from a stationery) by the attached one.
Alternatively if you want to keep your configuration, try the following:
- Start the debugger
- After the message telling you "can't program the flash", select "ICD12" -> "Set MCU Type" and change MCU to HCS12DP512.
I hope this helps.
CrasyCat