Question

TRUE OR FALSE

2. ( ) Both a hardware interrupt and an "int $128" CPU instruction require
       to change the CPU EIP register eventually.

3. ( ) (continued,) and it gets changed to an jump address fetched from an
       entry in an interrupt table.

4. ( ) (continued,) and the service must send PIC to inform it the service
       is done.

Answer 1

EIP(extended instruction pointer) is a register which store the location (address in RAM) of the next instructio to be executed

Ans 2: True

both the hardware inturupt and int$123(which is also an interrupt) change the EIP register(Instruction Pointer). to the address of the interrupt handler instruction.

Ans 3: True

when an interrupt occur it find the address of the interrupt handler instruction from interrupt table. jump to that location. so it will update the EIP register to this jump location

Ans4:False

interrupt service routines are called by cpi in between the execution of other processes. to interrupt routing has no return type.