Changelog:
• Compiled with devkitARM r30 and Libnds 1.4.3+.
• Fixed a bug in the management of color 0 for screen 6 mode.
• Added a filter to improve display quality of high resolution modes.
• There are now three sound modes (PSG at 40Khz, PSG+SCC at 22Khz, PSG+FM at 8Khz).
• Fixed the path of instant save file that was saved by mistake to the root.
• The selection of cartridges, MSX type and sound mode is blocked when the MSX is turned ON.
• Improved change of display mode.
Contributed by luke_c