Arm Development Studio forum Boot ROM Question of NXP LPC17xx

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Boot ROM Question of NXP LPC17xx

Note: This was originally posted on 9th June 2011 at http://forums.arm.com

Hi,

I am about to use LPC17xx to do some work. But I don't quite understand
it's boot ROM remapping. According to ARMv7 architecture manual, the
first vector entry (address 0x00 to 0x03) should be value of SP and the
second entry (address 0x04 to 0x07) should be reset entry (the starting
point of the user program). On the other hand, the LPC17xx manual said
that at boot time, a portion of the 8K boot ROM is temporarily remapped
to address 0x00000000. So I was wondering, what are the values in the
first 16 bytes in boot ROM? And, how a user program is finally get
executed? Where is my stack top?

Thanks in advance if you can give me some clues.

-
narke