* Explain what version this is in the readme.
* Add a warning to the emulator when it starts.
* Set up a visually distinct theme, in red.
* Set up a distinct system folder, EXPSFC.
* Change the Makefile to build to expsfc.plg.
SNES Open Bus is a quirk of the memory subsystem that allow reads of invalid addresses to return the last byte read from memory. However, it is seldom needed by a game, and it costs 1 to 3 MIPS instructions per SNES instruction to emulate.
If you need SNES Open Bus, you can remove -DNO_OPEN_BUS from the Makefile.
