I've got a large file I want to add as swap.  When I tried before to just
add the raw filesystem, I was getting an error regarding:

"/dev/sd4b: Device not configured."

or somesuch.  Now;   Netbsd doesn't appear to have support for swapping
directly to files rather than to disk partitions.  When I try to do this
with a file rather than a partition, it says that a block  device is required.

Machine in question is a Sun 3/60M running 1.1.

Thanks in advance,

Elijah Wright.