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boot and flash burn

Other Parts Discussed in Thread: TMS320VC5509A

hello!

There are two project in my system. One is the main project,and the other is the second bootloader. The main project is what I want to do in my system. The second bootloader is used to boot my main project to the DSP because my flash/EEPROM is out of the adress of tms320vc5509a.In my hardware, the tms320vc5509a only has 14 address pin to access the flash/EEPROM because the package is 144-Pin PGE Low-Profile Quad Flatpack.However,my flash/EEPROM size is 4Mx16bit.

Now I have a questions as this:
Why the second bootloader 's boottable locates on byte address 0x4fc000 instead of 0x400000?

best regards.