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ULINK flash download ok but no code run

I have an LPC2294 (Olimex) board which has functioned perfectly with simple serial/led flashing etc programs. I recently downloaded a large program of about 180K with some debug code attached to check functionality.

Before downloding I erased the whole internal flash and used ULINK as normal. The code refuses to run so I downloaded a simle timer based led flasher but this also does not run anymore.

The uVision/ULINK indicated perfect flash erase/programming every time so I suspect the ARM processor is being held in some reset state.

Any thoughts.

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