Virtual Box? It's great that people can try it out and see what it's capable of, but doesn't that sort of defeat the point? I mean, if its real claim to fame is that it's written in assembler than it seems that running it inside a C (is VB C?) application on top of a C operating system would seem to miss its best qualities.
Well if you want to try it out for a few minutes, as I guess most people on here will, it beats rebooting your PC (or figuring out how to even make it boot on a MacBook). It's not like it's full featured enough for daily use anyway.
The 64 bit floppy image runs fine under VirtualBox if you select a 64 bit OS.