I was trying to find a download for jdk 1.6 specifically for OS X. But Oracle doesn't seem to offer one. This made me wonder if the jdk 1.6 meant for Linux would work fine on OS X. I could try running it to see if it works. But I thought I'd check here to see if there are any subtle or not-so-subtle issues that I've missed.
I have an AMD-64 architecture on my mac system.
Java 6 for Mac is provided by Apple rather than Oracle, and can be downloaded from http://support.apple.com/downloads/#Java - look for the latest "Java for OSX", which at the time of writing is 2014-001.