Question

(MIPS Assembly language)

Ask user for two decimal numbers and save to memory (not registers). Multiply these two numbers using adding and shifting only, not the "mul" instruction and print the product to the user as both a base-10 and base-32 (again, no using div/mul/rem). Save the output to a txt file. The program should run 5 times, with no user input needed to continue the program.    

Answer 1

Program:

.data
textout:.asciiz "please enter 2 numbers "
textout1:.asciiz "The product of the numbers in base10 is: "
textout2:.asciiz "\nThe product of the numbers in base32 is: "
.text
main:
   li $s2,0 #result initialized too zero
  
   la $a0 textout #print prompt string
   li $v0 4
   syscall
  
   li $v0 5
   syscall
   move $s0,$v0
  
   li $v0 5
   syscall
   move $s1,$v0
   j multiply
  
multiply: beqz $s1,end
   andi $t1,$s1,1
   beqz $t1,add_s
   add $s2,$s2,$s0
add_s:   sll $s0,$s0,1
   srl $s1,$s1,1
   j multiply
  
end:   la $a0 textout1
   li $v0 4
   syscall
  
   move $a0,$s2   #print result
   li $v0,1
   syscall  
  
   la $a0 textout2
   li $v0 4
   syscall
  
   move $a0,$s2   #print result
   li $v0,36
   syscall  
  

Output: