Does anybody know of an application note of a similar document that gives pointers on how to best port code from the C167CR to the XC167? Google, or a search on this forum, does not seem to return much useful info. There is the Infineon AP16031, but that more applicable if you are programming a compiler or writing assembly code. I was looking for something from the point of view of a Keil uVision3 C compiler user. thanks