port-macppc: mac <-> pc serial cable for OFW serial console?

Subject: mac <-> pc serial cable for OFW serial console?
To: None <port-macppc@netbsd.org>
From: Russell McManus <russell_mcmanus@yahoo.com>
List: port-macppc
Date: 02/10/2003 08:52:04

I'd like to try booting my powermac 7300 using a serial console, but I
don't have another mac available to serve as a terminal.  instead I'd
like to use my thinkpad laptop, running NetBSD 1.6/i386.

The trouble is that I can't find the necessary cable to pull this off;
the Mac has an unusual serial cable.  Has anyone done this before?

-russ