.data
mystring:        .asciiz        "Hello World!\n"
        .text

        .global __start
__start:
        li      $v0,    4
        la      $a0,    mystring
        syscall
        li      $a0,    3
        li      $v0,    4001
        syscall

# save as : test.s
# assemble with :
# as -o test.o test.s
# link/load with :
# ld -o test test.o
# run with
# ./test
# desired result :
# should print "Hello World", but it doesn't print anything