Detect floppy diskette

[Charles Howse]

> Does nothing happen for 5 seconds?
> Good! That means you can trap the error. (Read my previous email).

Sorry to just get back to you, we're watching "Pearl Harbor", and I had
to shoot down a few Zeros.

I was mistaken, I do in fact get the kernel based, 'hard error' when
there is no diskette in the drive.

I'm not being sarcastic...the code works fine, except for that.