crc32

	xor ecx, ecx
	inc ch
	mov edx, 0EDB88320h
	@loop1:
		lea eax, [ecx-1]
		xor ebx,ebx
		mov bl, 8
		@loop2:
			shr eax, 1
			jnc  @F
			xor eax, edx
		@@:	dec ebx
		    jnz @loop2
		mov [crc+ecx*4-4], eax
		loop @loop1