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SPI interrupt at wrong address

I am using Atmel AT89C51CC03, and it is configured so in Keil too. The data sheet lists the SPI interrupt vector as 0x0053h, and I do define my interrupt as interrupt #10. However, the map file show my SPI interrupt has address of 0x0026h.

Does anyone know why is that? Anything I can do to make it right?

Thanks in advance!

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