# 1to10.s -- a program that prints the numbers 1-10 on the screen
# Register purpose:
# $s0 = number to be printed & loop control variable
# $s1 = sentinel value telling the last number to print
# $v0 = identifies which operating system I/O function to perform
#       (1 means integer output, 4 is for string output
#       10 means quit the program)
# $a0 = the argument to I/O function (copied from $s0)

	.data
nl:	.asciiz "\n"		# newline string

	.text
main:
	li $s0, 1		# initial value of loop control var
	li $s1, 10		# final number to print

loop:
	bgt $s0, $s1, exit_loop	# quit loop when i > last number

	li $v0, 1		# print the integer from $s0
	move $a0, $s0
	syscall

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

	addi $s0, $s0, 1	# prepare $s0 for the next iteration

	j loop			# do the next iteration

exit_loop:
	li $v0, 10		# end of the program
	syscall