systat -vm does not show acd0 device

[Alexander Peresunko]

Hi there!

systat -vm on my 5.2-RELEASE box (and on the another four boxes 
with different hardware) does not show the acd0 device. 
Device itself works just fine. Is it a bug?

$ uname -srm
FreeBSD 5.2-RELEASE i386

$ grep acd /var/run/dmesg.boot 
acd0: CDRW <LITE-ON COMBO LTC-48161H> at ata1-master UDMA33

$ sysctl hw.ata
hw.ata.ata_dma: 1
hw.ata.wc: 1
hw.ata.atapi_dma: 1

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FREE-UANIC