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Vector Table Offset LPC1788 (VTOR) - NOR Flash

Hello,

I'm using uVision 4.20 and an LPC1788 development board.

The development board has external NOR flash at CS0 (0x80000000). I am able to download code to the external NOR flash using and INI setup file but I can't seem to write the VTOR register with 0x80000000.

The exact code and setup modified to run from iRAM works without issue (@ 0x10000000).

Does anyone have any ideas why I cant write VTOR with 0x80000000?

(Note the code runs until there is any interrupt and than crashes)

Thanks.

Mac

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0 @Marc Crandall over 14 years ago in reply to John Linq

Thanks for all the info.

So specifically for the LPC1788 what kind of performance variations could one expect when running code from SDRAM versus running from internal RAM (connected to I & D-Code buses).

Thanks.

Mac
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0 @Marc Crandall over 14 years ago in reply to John Linq

Thanks for all the info.

So specifically for the LPC1788 what kind of performance variations could one expect when running code from SDRAM versus running from internal RAM (connected to I & D-Code buses).

Thanks.

Mac
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