Hi Phoebe

Thanks for the response and the answer is noted. However with the LPC925 the manual is saying that all of the Interupts I listed in the post above are sharing the same priority. As an example expanding on your illustration:

I want to have the following interrupt priorities (where 1 is top priority)

1 - External Interrupt 0
2 - Timer 0
3 - KBI

In the table in my previous post if I give EXT Int 0 max priority, it by default takes KBI interrupt (and several others) along with it by virtue of the fact they all share the IP0.0 and IP0H.0 SFR. So when I get a timer 0 and a KBI interrupt at the same (or nearly the same) time then the KBI will have a higher priority than Timer 0 regardless of the arbitration, (which is used within the same priority)

Please let me know if I have got the wrong end of the stick here, but it seems to me like the manual has a mistake, and the actual priorities for the Interrupts are set with individual bits in the appropriate IPn & IPnH SFR's and Philips have forgotten to update the table from a cut & paste operation or something. I could figure it out, but the SFR descriptions in the manual are not clear as to what Acronyms stand for.

I would just like a second opinion on this.

Regards

Marshall