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Nested Interrupts in Bootloader

A. M.

Hello, it's me again =)
I have a Problem (What else?):

First of all: uVision3 with an ARM7TDMI-S on LPC2148, ARMC-Compiler V3.1...

I'm using Nested Interrupts from KEIL:
http://www.keil.com/support/docs/3353.htm

They worked fine. But now, I try to fit them into the USB-IAP-Bootloader. (From KEIL too =)
This mix crashs!

My Diagnostics:
The Bootloader uses Registers I use for nesting my Interrupts.

My Solution:
None! =(

So, could anybody help me again? It would be great!

Thanks for all Replys!

Best Regards, Adrian

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