Fixed timers, interrupts and scrolling.
Fixed DAA opcode.
Fixed mute sound handling.
Better flash emulation, saving & loading.
Working state saving & loading.
Added stereo sound.
Added speed hacks.
Optimized VRAM transfers a bit.
Optimized memory accesses a bit.
* Various cpu fixes.
* Fixed auto power on/off.
* Added a new border on game screen.
* Added new setting to lower emulated cpu speed.
* Tweaked cpu register usage.
* Fixed MULA opcode.