EE 361 Homework

Homework 1

Due Date: Sept 7 wed

Assignment:

• Problem A [4 pts] Determine the machine code for the following MIPS assembly language instructions in decimal notation (use the green reference card at the front of the textbook).
  • sub $7,$2,$5
  • sw $20,16($7)
  • sw $24,24($2)
  As an example, consider the MIPS assembly language instruction add $3,$8,$2.  Its machine language format in decimal notation is

  0

  8

  2

  3

  0

  32

  
  
• Problem B [1 pt]: Write a MIPS assembly language implementation of the following C language instruction

  A[2*i] = A[2*k+j];

  where the array A starts at address Astart, and variables i, j, and k are, respectively, registers $3, $4, and $5. You may use registers $6, $7, and $8 for temporary values if needed.

• [2 pt] Problem C. What are the MIPS assembly language instructions for the following words (see green reference card at the front of the textbook).

  Instruction 1:  100011 00011 00100 00000 00000 000100

  
  

  Instruction 2:  000000 01101 00000 00000 00000 001000

  
  

  Instruction 3:  000000 00001 00010 00011 00000 100010

  
  

  Instruction 4:  000010 00000 00000 00000 00000 00110