# This is the contest file for CptS 260, programming project 4
# Version 1.0, 12/10/2008
# Carl Hauser

# To run this code 
#	jal contest
# from your main program after doing any necessary setup for your own code
	
	.data
image1: 			
	.word	0x0000ffff, 0xffffff00, 0x00ff0000, 0x00000000, 0x00ff0000, 0x00000000, 0x00ff0000, 0x00000000
	.word	0x00ff00ff, 0xffffff00, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x0000ffff, 0xffffff00

image2:				
	.word	0x0000ffff, 0xffff0000, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00
	.word	0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x0000ffff, 0xffff0000

image3: 			
	.word	0x0000ffff, 0xffffff00, 0x00ff0000, 0x00000000, 0x00ff0000, 0x00000000, 0x00ff0000, 0x00000000
	.word	0x00ff0000, 0x00000000, 0x00ff0000, 0x00000000, 0x00ff0000, 0x00000000, 0x0000ffff, 0xffffff00

image4:				
	.word	0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00
	.word	0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x00ff0000, 0x0000ff00, 0x0000ffff, 0xffff0000

block1:	.word	image1, 8, 0, 8, 0, 8
block2:	.word	image2, 8, 0, 8, 0, 8
block3:	.word   image3, 8, 0, 8, 0, 8
block4:	.word   image4  8, 0, 8, 0, 8

	.data 0x10010200	# exact address does not matter	;  should be a multiple of 0x20 though
image5:	.space	1024
block5:	.word	image5, 32, 1, 8, 0, 8
block6:	.word	image5, 32, 1, 8, 8, 8
block7:	.word	image5, 32, 1, 8, 16, 8
block8:	.word	image5, 32, 1, 8, 24, 8

block9:	.word	image5, 32, 1, 8, 1, 31
block10: .word	image5, 32, 0, 8, 0, 31
	
	.text
contest:
	# purposefully mysterious, hence lack of comments!

	addiu	$sp, $sp, -4
	sw	$ra, 0($sp)
	la	$a0, block3
	la	$a1, block5
	li	$a3, 0
	jal	byteblt

	la	$a0, block2
	la	$a1, block6
	li	$a3, 0
	jal	byteblt

	la	$a0, block4
	la	$a1, block7
	li	$a3, 0
	jal	byteblt

	la	$a0, block1
	la	$a1, block8
	li	$a3, 0
	jal	byteblt

	# At this point you may be able to visually detect a message in image5
	# Set a breakpoint to see it

	# Now, move it around a bit
	la	$a0, block9
	la	$a1, block10
	la	$a3, 0
	jal	byteblt

	la	$a0, block10
	la	$a1, block9
	li	$a3, 0
	jal	byteblt

	lw	$ra, 0($sp)
	addiu	$sp, $sp, 4