What will the controller do before interrupting CPU?

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nanna kumar

  • Jun 29th, 2005

when interrupt occur controller finish its current executing operation. 
It store the address of the next instruction. 
jump to IVT(intrrupt vector table).where add of ISR(int.service routine) stored. 
then it move to corresponding add of interrupt which occured. 
It 'll do the opeartion until RETI instruction . 
After it come back where interrupt occurred by take the add from PC(program counter). 

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vikas s kulkarni

  • Aug 3rd, 2005

actually question is about controller ,controller first aserts intr signal  
then after receiving intra continues the communication 

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