.export _change_iclk
	.SECTION P,CODE,ALIGN=4

_change_iclk:
	mov r4, r0
	and #h'0F, r0
	shll16 r0
	shll2 r0
	shll2 r0
	mov.l #h'A4150000, r1
	mov.l #h'FF0FFFFF, r3
	mov.l @r1, r2
	and r3, r2
	or r0, r2
	mov.l r2, @r1
	mov.l #h'80000000, r0
	mov.l @r1, r2
	or r0, r2
	rts
	mov.l r2, @r1
	.align 4
	.END