HELP PLEASE FATAL TRAP 21 PC98

[b1smooth at yahoo.com]

Ok People...first I'll admit that I suck at bsd and
I'm a sorta newbie. I'm using a PC 9821 Ls150 with the
pc98 5.2 distro. I keep getting this funky kernel
message below and it restarts my box ever time:

> Fatal trap 12: page fault while in kernel mode
> fault virtual address   = 0x0
> fault code              = supervisor read, page not
present
> instruction pointer     = 0x8:0x0
> stack pointer           = 0x10:0xc4fbc7c
> frame pointer           = 0x10:0xc4bfc7c84
> code segment            = base 0x0, limit 0xfffff,
type 0x1b
>                         = DPL 0, pres 1, def32 1,
gran 1
> processor eflags        = interrupt enabled, resume,
IOPL = 0
> current process         = 27 (swi8: tty:sio clock)
> trap number             = 12
> panic: page fault

I was told to put ddb in the kernel but I can't get to
a prompt to open the kernel conf file. None of the
boot commands seem to work ie...gdb or the flags. What
can I do ...am I just doing it wrong. How do I stop
the error?? How can I get to a prompt that will let me
ls and cd to boot/kernel and so forth