Question: 2. [10 Points] Explain the semantics behind the microprogram code segment for iadd given as follows. Info about micro instructions of ISA used in your

2. [10 Points] Explain the semantics behind the microprogram code segment

2. [10 Points] Explain the semantics behind the microprogram code segment for iadd given as follows. Info about micro instructions of ISA used in your textbook given in Figure 4 Label Main1 nop1 add1 add2 add3 Operations PC PC +1; fetch; goto (MBR) goto Main1 Comments MBR holds opcode: get next byte; dispatch Do nothing Read in next-to-top word on stack H-top of stack Add top two words: write to top of stack MDR. TOS = MDR + H: wr: goto Maint

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