VAD to CPU Interrupt register (LSB) Disk R LO Printer R. A A 11 Reader R 12 0 Keyboard R. 13 (MSB) M IEN IST Enable M, M M Interrupt to CPU INTACK from CPU Mask register Consider the parallel priority interrupt hardware shown below. a. Suppose that the disk requests an interrupt. i. What is the content of the interrupt register (R3RRRo)? ii. What is the value (in decimal) of the vector address VAD? b. Suppose that the printer and reader sent interrupt requests to the CPU simultaneously 1. What is the content of the interrupt register (RR R.Ro)? il What is the value in decimal) of the vector address VAD? Time left 0:54:20 Complete the following symbolic microprogram that implements a computer instruction named ABC. The op code for this instruction is 1010 and the symbolic function for this instruction is: If (AC>0) then (DR