this ath0 is old CM9:
ath0@pci0:14:0: class=0x020000 card=0x1012185f chip=0x0013168c rev=0x01 hdr=0x00
    vendor   = 'Atheros Communications Inc.'
    device   = 'AR5212, AR5213 802.11a/b/g Wireless Adapter'
    class    = network
    subclass = ethernet

this ath1 is new CM10:
ath1@pci0:19:0: class=0x020000 card=0x1600185f chip=0x001b168c rev=0x01 hdr=0x00
    vendor   = 'Atheros Communications Inc.'
    class    = network
    subclass = ethernet

BTW: Does somebody know where device information is ? :)