title: Where can I systematically study how to write Mac OS X device drivers?
body: <p>I'm looking for an exhaustive, university-level book or guide to study in order to 
  gain the ability of writing Mac OS X device drivers. I'm totally ignorant on this OS, but I'm already skilled on Linux.</p>
  
  <p>Is there any Mac OS X counterpart for book "Linux Device Drivers"?</p>
  
  <p>The best guide should introduce OS internals too, makes clear kernel space and userland differences and so on.</p>
  
  <p>Thanks in advance</p>