7 Questions on Instruction set Architecture - Exam 1 | COSC 201, Exams of Computer Architecture and Organization

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COSC 201 Exam 1 Fall 2004 Name:

1. Define or describe the following. a) five classical components of a computer b) instruction set architecture c) pseudoinstruction d) edge triggered

2. a) Draw a diagram of the instruction format for MIPS R-type instructions, indicating each field, its purpose, and the number of bits in that field. b) Draw a diagram of the instruction format for MIPS I-type instructions, indicating each field, its purpose, and the number of bits in that field.

4. Write MIPS assembly language for the following C code. Pseudoinstructions are allowed. Use the registers s0, s1, and s2 for the variables sum, i, and n respectively. int sum = 0; for(int i = 1; i <= n; i++) { sum += i; }

5. Write MIPS assembly language for the following C code. Pseudoinstructions are allowed. int max(int a, int b) { if (a > b) return a; else return b; }

7. Consider the function X described by the truth table to the right → a) Write a Boolean equation for the function in sum-of-products form. b) Use properties of Boolean algebra to simplify the equation from part (a). c) Draw the logic gate circuit for the simplified equation from part (b).

A B C X