Forums

NXP LPC 2468 interrupt vector checksum?

Started by Tauno Voipio June 26, 2020
The NXP LPC 2468 documentation states that, in order to start up,  there 
must be a valid checksum over the interrupt vector in the start of the 
Flash image. The document demands the the checksum over the vector must 
be zero.

There are vague and contradictory statements what is counted as the 
interrupt vector. In ARM7TDMI documentation the vector is 8 words (32 
bytes), but the NXP documentation speaks about vector mirroring of 16 
words (64 bytes).

Has anybody succeeded to create a startable Flash image? How many words 
are checksummed there?

-- 

-TV