2A03/VRC6/VRC7/FDS/MMC5/N106/FME7 playable at the same time.

#EX-VRC6
M, N: pulse channel
	volume range: v0-v15
	duty cycle range: @0-@7
O: sawtooth channel
	volume range: v0-v63

#EX-FME7
X, Y, Z: square channel
	volume range: v0-15

#EX-MMC5
a, b: pulse channel
	volume range: v0-v15
	duty cycle range: @0-@3

how to make nsf
1) put songdata.mml into 'songs' folder
2) double click '00startcmd.bat' file
3) type 'mknsf songdata' (WITHOUT .mml suffix)
4) if compiled successfully, you will get 'sondata.nsf'

