efuse: 0000 0001
hfuse: 1101 1111
lfuse: 1111 1011 (1 MHz crystal)
       0111 1101 (8 MHz crystal, downscaled)

Example:
	avrdude -p m88 -U lfuse:w:0xfb:m
	avrdude -p m88 -U lfuse:r:-:b