fxtv problem

[Tsu-Fan Cheng]

Hi people,
   i just bought a TV card and installed fxtv from port with option 'EXTRA'
on, when I ran it, fxtv said:
# fxtv
mmap of driver buffer failed: Invalid argument

I googled sometime, and found an entry about commenting out one option in
the kernel config file, so I am left with:
# TV capture
device          bktr
device          iicbus
device          iicbb
device          smbus
#options         BROOKTREE_ALLOC_PAGES=216
options         BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC


well, still dont' work. any idea?? and the uname -a spells like that:
FreeBSD  6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #9: Sun Jan 14 19:22:40 EST
2007     tfcheng@:/usr/src/sys/i386/compile/TFCHENG  i386

TFC