[msla]

> If I had the patience (and a machine close at hand) I'd boot MS-DOS and run thru a little test in DEBUG to see how it acts on a real card to write beyond address 0xFF via the auto-increment feature.

Good excuse to load up a bunch of old games and see how they work, or fail to. The old Raymond Chen test: Grab a bunch of old software and let the application programmers bang on the emulation layer. Abandonware and old shareware on archive.org makes this a lot cheaper than you might imagine.

https://archive.org/details/softwarelibrary_msdos

[userbinator]

Don't forget all the demoscene productions --- they'll use all the tricks in book, and then some. They'll be the first to break if the emulation of the hardware isn't perfect.

This masterpiece is a great example (but targets hardware which is older than what the hypervisor in the article can emulate): https://news.ycombinator.com/item?id=16938029