Answer to Question #158963 in Assembler for Fareeha Nadeem

Question

Write a program in assembly language using 2-Dimenisonal Array and display the value 20 in MIPS

Answer 1

#MIPS assembly

.data

height: .byte 4

width: .byte 5

.align 4

array:  .word 1,2,3,4,5

            .word 2,3,4,5,6

            .word 3,4,5,6,7

            .word 4,5,6,7,8

                        

msgArray:      .asciiz "2-Dimenisonal Array:\n"

msg20:           .asciiz "\nDisplay the value 20: "

Space_:           .asciiz " "

newLine:        .asciiz "\n"     

           .text                           # .text section of program (contains executable instructions)

                                              # Executable instructions are stored in program memory

           .globl main                 # identifies the starting point of the program with label "main"

 

main:  

           li $v0,4                       # print string

           la $a0,msgArray        # "2-Dimenisonal Array\n"

           syscall

           

           la $s0, array               # begining address in array              

           la $t1, width

           lb $t1, 0($t1)              # $t1 = width

           la $t2, height

           lb $t2, 0($t2)              # $t2 = height

   

 

           li $t3,0                        # j - counter array elements in rows

           li $t4,0                        # i - counter array elements in columns

           

Loop1:

           slt       $t7, $t4, $t2               # IF(i < height) continue

           beq     $t7, $zero, endLoop1 # ELSE goto endLoop1

Loop2:

           slt       $t7, $t3, $t1               # IF(j < width) continue

           beq     $t7, $zero, endLoop2 # ELSE goto endLoop2           

           

           li         $v0, 1                         # print integer from $a0

           lw $a0,0($s0)                         # load array[i][j] to $a0 

           syscall                                                # make the syscall                                                    

           

           li $v0,4                                   # print string

           la $a0,Space_                        # " "

           syscall                                    # make the syscall     

           

           addi    $t3, $t3, 1                  # j++   

           addi    $s0, $s0, 4                  # next address in array         

           j          Loop2             

endLoop2:

           

           addi    $t4, $t4, 1                  # i++

 

           li $v0,4                                   # print string

           la $a0,newLine                                  # "/n"

           syscall

           

           li $t3,0                                   # j=0

           j          Loop1 

endLoop1:

 

           li $v0,4                                  # print string

           la $a0,msg20                        # "Display the value 20: "

           syscall

 

           li         $v0, 1                         # print integer from $a0

           li $a0,20                                 # $a0 = 20 

           syscall

 

           li $v0,4                                   # print string

           la $a0,newLine                                  # "\n"

           syscall

 

           li $v0, 10                    # Sets $v0 to "10" to select exit syscall

           syscall                        # make the syscall Exit