Answer to Question #295093 in Assembler for hariss

Question

Assume that you are system engineer and the designated bank has assigned you a task that if any customer wants to use her internet banking facility, he must have to enter two different 8-bit pin codes one by one. Computer gets these two 8 bits numbers, converts them into binary and performs addition on both of these numbers. If the result matches with the code that is stored for this account, internet banking facility will be provided otherwise, the system will not allow the use of internet banking.

Answer 1

#MIPS  assembly
#************************************************
    .data
    Enter_1:        .asciiz "Enter first pin-code:  "    
    Enter_2:        .asciiz "Enter second pin-code: "
    msgUnCorrect:    .asciiz "UnCorrect"
    msgCorrect:        .asciiz "Correct"    
 
    code8:         .word    0x0AA
   
# code segment
    .text
    .globl main
main:
    li $v0,4            # print string
    la $a0,Enter_1        # Print first pin-code:  "    
    syscall  
# Input first integer pin-code
    li $v0, 5            # read integer
    syscall
    add $t0,$zero,$v0    # save pin-code in $t0
    andi $t0, $t0, 0x0ff # leave only 8 bits

    li $v0,4            # print string
    la $a0,Enter_2        # Print second pin-code:   "    
    syscall  
    
# Input second integer pin-code
    li $v0, 5            # read integer
    syscall
    add $t1,$zero,$v0    # save pin-code in $t1
    andi $t1,$t1, 0x0ff # leave only 8 bits

    add $t0, $t0, $t1    # add first code and second cpde
    la $s0, code8
    lw $t1, 0($s0)        # load the code that is stored for this account
    bne $t0, $t1, err    # compare
    
    li $v0,4            # print string
    la $a0,msgCorrect        # Print  "UnCorrect"
    syscall  
    j exitP
err:
    li $v0,4            # print string
    la $a0,msgUnCorrect        # Print  "Correct"
    syscall  
    
exitP:       
      li $v0, 10         # finished .. stop .. return
      syscall            # make the syscall