Only WDMA2?

[Mark]

Dear Sirs:

In my FreeBSD 4.9R server, I use an ARAID99 1000L RAID system. However, it
only runs at "WDMA2":

Aug  9 21:08:36 asarian-host /kernel: ad0: 39205MB <ASI ARAID99 1000 Rev
2.5> [79656/16/63] at ata0-master WDMA2

WDMA2 only offers 16 MB/s, whereas ATA133 of course, offers 133 MB/s. The
question is, is there a reason FreeBSD only uses WDMA2 for this device? (it
contains two MAXTOR 40G ATA133 disks, connected to an ATA133 IDE port as
single master).

Second question, subsidiary, can I force a higher mode than WDMA2? (like
UDMA 133).

Much obliged,

- Mark