MIPS Simulator-SPIM

====== SPIM Simulator for Windows ======
| {{:mywiki:hw:mips:pcspim.zip|PcSpim For Windows download}} | 
| [[pcspim_syscall]] |

====== SPIM Example 1 ======

<file asm test1.asm >
# Sample spim program
#
# Written by Pat Troy, 11/8/2002

	.data
prompt:	.asciiz "Enter in an integer: "
str1:	.asciiz "the answer is: "
newline: .asciiz	"\n"
bye:	.asciiz	"Goodbye!\n"
	.globl	main
	
	.text
main:

	# initialize 
	li	$s0, 10
	
	# prompt for input
	li	$v0, 4
	la	$a0, prompt
	syscall

	# read in the value
	li	$v0, 5
	syscall
	move 	$s0, $v0

	
loop:	
	# print str1
	li	$v0, 4
	la	$a0, str1
	syscall

	# print loop value
	li	$v0, 1
	move	$a0, $s0
	syscall

	# print newline
	li	$v0, 4
	la	$a0, newline
	syscall

	# decrement loop value and branch if not negative
	sub	$s0, $s0, 1
	bgez	$s0, loop

	# print goodbye message
	li	$v0, 4
	la	$a0, bye
	syscall

</file>



====== SPIM Example 2 ======
<file asm test2.asm>
## addEm.asm
## program to add two integers
##
        .text
        .globl  main

main:
        la    $t0,val2     #  put a 32-bit address into $t0
        lw    $t1,0($t0)   #  load first value, 2
        lw    $t2,4($t0)   #  load second value, 3
        sll   $0,$0,0      #  load delay slot
        addu  $t1,$t1,$t2  #  calc. sum

        .data
val0:   .word   0 
val1:   .word   1 
val2:   .word   2 
val3:   .word   3 
val4:   .word   4 
val5:   .word   5 

</file>