Analyzing modified DOS 3.x...

[Lyrical Nanoha <LyricalNanoha@dosius.net>]

For the hell of it I have been working on digging into MUSE's customized 
DOS (3.1!) from Castle Wolfenstein.

Well, I'm trying to see if anything's been removed or patched over.  Not 
an easy task.  I'd like to figure out, and Beneath Apple DOS really isn't 
helping me figure out much, how to do a couple things...

1. Bypass the command parser and do an INIT HELLO directly.

2. Bypass the high level routines and call the disk initialization routine 
manually.  Booting this disk should give a file not found error.

-uso.