Question

Write a MIPS assembler language program to reverse the order of the bottom 16 bits of register $a0. At the start of your program you should load the initial bit pattern into $a0. The answer should be stored into $v0. Finish your program with an infinite loop (a jump instruction that jumps to itself).

 

 

For example:             $a0 = 00000011100000001111000000000001 in binary,

 

 

Reversing the order of the bottom 16 bits gives (modified bits are underlined):

 

 

                                                $v0 = 00000011100000001000000000001111 in binary

 

 

 

Here is a skeleton program:

 

# Laboratory Test

# Written by Kermit the Frog

 

.set noreorder              # Avoid reordering instructions

.text                             # Start generating instructions

.globl start                   # The label should be globally known

.ent start                      # The label marks an entry point

 

start:

                                    # Your assembler code goes here!

 

 

 

 

.end start                     # Marks the end of the program