Question

Specifics:

 Use only the instructions covered to date. No jal and jr. Do not use any pseudo-instructions.

 Do not store any values into memory. There are no lw or sw instructions in this program. Just read the integers and process them.

 Document the beginning of your program with your name, project description, and class ID.

 comment every instruction.

Write a MIPS assembly language program to do the following:

1. Print your name

2. Prompt the user for the number of times to repeat the testing of your logic for step 4. (See the example below.)

3. Read an integer

4. If the integer that is input is less than 1 Print an error message.

Else

Repeat the following steps the number of times input in step 3. This will require a loop.

a. Read in a list of integers ending with a 0. The 0 marks the end of the input and is not considered part of the list.

b. Print the largest and smallest numbers in the input list. If only a zero appears in the list, print an error message

5. Print an ending message and then end your program. Note: your program should not end with an error message.

Example input and output for the program.

In this example, the number of times the logic is tested in this example is 3.

Tom Jones

Enter the number of times to test: 3

Enter a number 1 Enter a number 0

The smallest number is 1 The largest number is 1

Enter a number 0

Error: there are no numbers to test

Enter a number -1 Enter a number 8 Enter a number 5 Enter a number 0

The smallest number is -1 The largest number is 8

Program complete

Answer 1

Program (with no pseudo codes):-

.data

prompt_name: .asciiz " MY NAME "

prompt_test: .asciiz "Enter the number of times to test :"

prompt_inp: .asciiz "Enter the number : "

prompt_small: .asciiz "The smallest number is :"

prompt_large: .asciiz "The largest number is :"

prompt_complete: .asciiz "Program complete "

error_msg: .asciiz "Error:there are no numbers to test "

.text

.globl main

main:

addi $v0,$0,4 #Print string

lui $a0, prompt_name_hi

ori $a0, $a0, prompt_name_lo

syscall

addi $v0,$0,4 #Print string

lui $a0, prompt_test_hi

ori $a0, $a0, prompt_test_lo #load prompt

syscall

addi $v0,$0,5 #read int

syscall

add $s0, $v0,$0

addi $s1,$0,0

TEST_LOOP:

beq $s0, $s1, PROGRAM_END

addi $t0,$0,1 #number counter

addi $s2,$0,1

NUMBER_LOOP:

addi $v0,$0,4 #Print string

lui $a0, prompt_inp_hi

ori $a0, $a0, prompt_inp_lo #load prompt

syscall

addi $v0,$0,5 #read int

syscall

add $t1,$v0,$0

bne $t0,$s2,SKIP_FIRST

add $t2,$t1,$0 #smallest number

add $t3,$t1,$0 #largest number

bne $t1,$0,SKIP_FIRST

addi $v0,$0,4 #Print string

lui $a0, error_msg_hi

ori $a0, $a0, error_msg_lo #load error msg

syscall

beq $zero,$zero,NUMBER_LOOP_EXIT

SKIP_FIRST:

beq $t1,$0,PRINT_SMALL_LARGE

slt $t5,$t1,$t2

beq $t5,$zero,GREAT_CHECK

addiu $t2,$t1,0

GREAT_CHECK:

slt $t5,$t3,$t1

beq $t5,$zero,NEXT

addiu $t3,$t1,0

NEXT:

addi $t0,$t0,1

beq $zero,$zero,NUMBER_LOOP

PRINT_SMALL_LARGE:

addi $v0,$0,4 #Print string

lui $a0, prompt_small_hi

ori $a0, $a0, prompt_small_lo #load prompt

syscall

addi $v0,$0,1 #display int

add $a0,$t2,$0

syscall

addi $v0,$0,4 #Print string

lui $a0, prompt_large_hi

ori $a0, $a0, prompt_large_lo #load prompt

syscall

addi $v0,$0,1 #display int

add $a0,$t3,$0

syscall

NUMBER_LOOP_EXIT:

addi $s1,$s1,1

beq $zero,$zero,TEST_LOOP

PROGRAM_END:

addi $v0,$0,4 #Print string

lui $a0, prompt_complete_hi

ori $a0, $a0, prompt_complete_lo #load prompt

syscall

EXIT:

addi $v0,$0,10

syscall