Question: The following is a symbolic microprogram for an instruction in the computer defined in Sec. 7-3. a. Specify the operation performed when the instruction is

The following is a symbolic microprogram for an instruction in the computer defined in Sec. 7-3.

ORG 40 NOP NOP NOP ARTPC SZHD S 2 I U JMP JMP CALL JMP FETCH FETCH INDRCT FETCH

a. Specify the operation performed when the instruction is executed.

b. Convert the four microinstructions into their equivalent binary form.

7-3 Microprogram Example Once the configuration of a computer and its microprogrammed control unit is

111 10 10 SBR MUX AR PC 0 CAR Control memory 128 x 20 Control unit Address 15 15 Memory 2048 x 16 MUX DR

ORG 40 NOP NOP NOP ARTPC SZHD S 2 I U JMP JMP CALL JMP FETCH FETCH INDRCT FETCH

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