RE: [motoroladsp] Erasing PFIU2 on the DSP56F807
To expand on Art's comment, while it may be true that the flash is a single area of silicon, it takes 2 flash interface units to access it. A Flash interface unit can only access 32K of address space! The first one accesses the lower 32K while the Upper flash memory is access via PFIU2. Each PFIU will have a page 0.
Don't forget that the first 4 addresses (0x0000 thru 0x0003) in program menory are actually located in the Boot Flash memory!!!
Also the code that is executing cannot be from the same flash unit that you are trying to program, as it's whole flash address space is disabled for read while you are programming any part of it.
I'm having some difficulty erasing PFIU2 on the
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