Run legacy nvidia card on FreeBSD >= 14

I have GTX285, and it didn't run out of the box after installing
nvidia-driver-340 and kldload nvidia.
https://docs.freebsd.org/en/books/handbook/x11/#x-configuration-nvidia

Since ABI of xorg-server>=1.20 is relatevly new to 340 driver, X11 needs the
IgnoreABI option in Xorg config.

So the /usr/local/etc/X11/xorg.conf.d/20-nvidia.conf should have such content:

Section "Device"
        Identifier "Card0"
	Driver     "nvidia"
EndSection

Section "ServerFlags"
	Option "IgnoreABI" "1"
EndSection

First link with this solution was
https://bbs.archlinux.org/viewtopic.php?id=271132

=====

nvidia-driver-304 doesn't work at all on current xorg-server.
It seems that highest version of xorg-server that it supports is 1.19.
But such an old driver may be needed only for GeForce 7 series cards and older.

However, there is NV driver and it seems that it's best choice for very old
cards. To use it:

# pkg install xf86-video-nv

And create /usr/local/etc/X11/xorg.conf.d/20-nv.conf

Section "Device"
        Identifier "Card0"
	Driver "nv"
	Option "AccelMethod" "exa"
EndSection

Without string 'Option "AccelMethod" "exa"' windows are laggish.