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Reserving a ROM sector

Hello

I'm using a LPC2132 and is it possible to let the linker know, that it can't use a specific sector in flash?

The first 8 sector is each of 4 kB. The first sector is used for the bootloader and I would like to reserve sector 8 for persistent data.

Sector 1: Bootloader
Sector 2-7: application
sector 8: Data
Sector 9: application

Is that possible, so linker don't use sector 8?

Alternative, I can reserve the first to sectors for bootloader and persistent data.
But then I need somehow to debug the application without the bootloader, so I just can download the application to sector 3 and onward, but still be able to debug the application.
How to let KEIL debugger do the jump to sector 3 for launching the main?'

/Thomas