64DD problem

9ac:	3c050500 	lui	$a1,0x500
 9b0:	34a5050c 	ori	$a1,$a1,0x50c
 9b4:	8c840000 	lw	$a0,0($a0)
 9b8:	0c000000 	jal	0 <leointerrupt> (osEPiReadIo)
 9bc:	27a60018 	addiu	$a2,$sp,24
 9c0:	8fac0018 	lw	$t4,24($sp)
 9c4:	3c026000 	lui	$v0,0x6000
 9c8:	01826824 	and	$t5,$t4,$v0
 9cc:	544d0004 	bnel	$v0,$t5,9e0 <leointerrupt+0x9e0>
 9d0:	24020018 	li	$v0,24
 9d4:	10000002 	b	9e0 <leointerrupt+0x9e0>
 9d8:	24020019 	li	$v0,25
 9dc:	24020018 	li	$v0,24
 9e0:	8fbf0014 	lw	$ra,20($sp)
 9e4:	27bd0020 	addiu	$sp,$sp,32
 9e8:	03e00008 	jr	$ra
 9ec:	00000000 	nop