The mpc5674F has 4MB flash, so it can run from flash for a large program that is larger than 256K Ram. what do I need to do to make the program run smoothly. linker file need change ? do I need to ovelay the code memory map?
what IDE do you use? IDEs allow you to create project which already contains pre-defined startup files, linker files for RAM/flash target. For example, CodeWarrior IDE allows you to change the target anytime. Overlay is not necessary, of course.
Here you can find example with basic initialization:
Example XPC567XFKIT PinToggleStationery CW210
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