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When a device interrupt occurs, how does the processor determine which device issued the interrupt?

Question asked by HARI CHARAN REDDY PACHARLA on Aug 1, 2018
Latest reply on Aug 2, 2018 by Daniel Martynek

Hi All,

 

While studying The interrupt module in Datasheet of MC9S12XEP100 family 

I had This Doubt " How Interrupt control module decides which interrupt has occured? when Interrupt happens."

For Example 

" If Timer Interrupt occurs How INIT module find this Interrupt was caused by Timer Module ?"

 

Data Sheet: https://www.nxp.com/docs/en/data-sheet/MC9S12XEP100RMV1.pdf 

 

Thanks in Advance 

 

Regards

Haricharan

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