5.4 Installation Problems on Dell GX280 - Fatal trap 12

[John Vaughan]

I am trying to install FreeBSD 5.4 on a Dell GX280 and am getting a
Fatal trap 12 supervisor write, page not present error.  From what
I've read, this is an ACPI problem which I could disable if I had a
PS2 port, but the GX280 doesn't have them.  Has anyone gotten 5.4 to
run properly on a GX280 using option 7 to boot with usb keyboard?

-John