Add features from the burn in test catridge

[HeartoLazor]

When you are debugging a dead snes console, most use a reproduction of the snes burn in test catridge.

Problem, that catridge requires visual feedback. Checking a snes with black screen of death using sd2snes diagnostic firmware, the console passed all tests, generated the log file and the screen changed colors! As the log file generation doesn't require a screen, sd2snes can bypass the visual feedback limitation.

So, can the sd2snes diagnostic firmware include more detailed tests for the snes hardware, like the snes burn in test catridge? This can make the sd2snes the ultimate diagnostics utility

[mrehkopf]

Sounds like a good idea to me, might even help rule out the sd2snes/fxpak as a cause of failure :)