'swap on' config question

[Bo Najdrovsky <bn%okcforum.org@localhost>]

I just reinstalled my 1.3.2 distribution again, and set it up such that
/ and /usr are on sd0, while the swap partition is on sd1.    After
doing this, I went to compile a new kernel, and I discovered that config
no longer supports the 'swap on' expression in the config file, to
specify where to look for the swap partition....  Back in 1.2 days, I
was able to do something like:

config netbsd root on sd0a swap on sd1b

Indeed the '4.4 BSD System Manager's Manual' also talks about this, but
this no longer works.   As a result,  the kernel assumes that the
default swap partition is on the same drive as the root file system, and
during boot up, I get an error from savecore telling me that /dev/sd0b
is not configured.   Could someone tell me what is the new way of
specifying the swap device to the kernel?

Thanks,
  Bo Najdrovsky
  bn%okcforum.org@localhost