Interrupts are basically two types
1.Vectored Interrupt ===> provide address of the interrupt (Is it Key Board,System Call etc) to ISR (interrupt Service Routine)
2.Non-Vectored Interrupts ===> doesn't provide address of the interrupt to ISR (interrupt Service Routine)
in vectored interrupt all device have separate interrupt request line or one single interrupt request line common for all io devices ?
it is your choice, you can use them in Serial Connection or Parallel Connection
what is the purpose of INTA signal?
is INTA means Interrupt Acknowledgement ? if yes
it is used for, after interrupt is generated and known to CPU, then CPU send this signal for Interrupt is going to be serviced