A computer responds to an interrupt request signal by pushing onto the stack contents of the PC and the current PSR. The computer then reads new PSR contents from memory from the location given by the interrupt vector address (IVAD). The first address of the service program is taken from memory at location IVAD + 1.
(a) List the sequence of micro operations implementing the interrupt.
(b) List the sequence of micro operations implementing the return from interrupt.
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