########################################################################
#         A simple MIPS demo program
#     Filename:   mipsdemo2.s
#     Author:      L.Aamodt
#     Version:     1/23/22
#     Processor:   MIPS
#     Notes:       for execution using the SPIM simulator
#             Implements this functionality:
#                     If (X < Y)
#			display X on the console
#                       Z = X
#                     else
#                       display Y on the console
#                       Z = Y
#             where X and Y are integers
########################################################################

	.data
arrayD:	.space 100		# 100 bytes (25 words) reserved for arrayD
varX:	.word  6			# (array not used in this program)
varY:   .word  10
varZ:	.word  0
str1:   .asciiz "X = "
str2:	.asciiz "Y = "
	.text
				# t0 is X
				# t1 is Y
				# t2 contains the address of X
				# t3 contains the address of Y
				# t4 contains the address of Z
				# t5 temporary value
main:	la	$t2, varX	# get address of X
	la	$t3, varY	# get address of Y
	la	$t4, varZ	# get address of Z
	lw	$t0, 0($t2)	# get X
	lw	$t1, 0($t3)	# get Y

if:	slt	$t5, $t0, $t1	# check to see if X < Y
	beq	$t5, $0, else
	sw	$t0, 0($t4)	# Z = X
	li	$v0, 4		# print a string function code
	la	$a0, str1	# load address of string
	syscall
	li	$v0, 1		# print an integer function code
	add	$a0, $t0, $0	# a0 = X
	syscall
	j	exit

else:	sw	$t1, 0($t4)	# Z = Y
	li	$v0, 4		# print a string function code
	la	$a0, str2	# load address of string
	syscall
	li	$v0, 1		# print an integer function code
	add	$a0, $t1, $0	# a0 = Y
	syscall

exit:	addi	$v0, $0, 10	# terminate the program with system call #10
	syscall