GATE CSE concept:data-path PYQs & Answers

Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.

A partial data path of a processor is given in the figure, where RA, RB, and RZ are 32-bit registers. Which option(s) is/are CORRECT related to arithmetic operations using the data path as shown?

Diagram for Computer Science and Information Technology question 27

Your answerSelect all correct options. You can choose more than one.

The data path can implement arithmetic operations involving two registers.

The data path can implement arithmetic operations involving one register and one immediate value.

The data path can implement arithmetic operations involving two immediate values.

The data path can only implement arithmetic operations involving one register and one immediate value.

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Consider the following data path diagram.

Consider an instruction: R0 ← R1 + R2. The following steps are used to execute it over the given data path. Assume that PC is incremented appropriately. The subscripts r and w indicate read and write operations, respectively.

R2ᵣ, TEMP1ᵣ, ALUₐdd, TEMP2w

R1ᵣ, TEMP1w

PCᵣ, MARw, MEMᵣ

TEMP2ᵣ, R0w

MDRᵣ, IRw

Which one of the following is the correct order of execution of the above steps?

Diagram for Computer Science and Information Technology question 4

Your answerChoose one option.

2, 1, 4, 5, 3

1, 2, 4, 3, 5

3, 5, 2, 1, 4

3, 5, 1, 2, 4

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GATE CSE concept:data-path PYQs

How to practice concept:data-path

Question 27

Question 4