Select a channel, then click the grid to add a note. Drag across steps to set its length. Right-click a note to remove it. Each channel plays one note at a time.
Patterns play left to right. Use M to mute or S to solo a channel. Changes take effect the next time you press Play.
Import standard .nsf files to listen and select subsongs. “Capture to pattern” estimates notes from a short recording; it cannot recover the original score or DMC samples. Pulse Studio exports retain the full editable project.
NSF export contains a real 6502 playback driver. Expansion chips and NSF2 features are outside this app’s scope. Save a project to keep your work; files stay in your browser until you download them.
Sprite Lab generates a 32×32 character from a seed and mood. Edit its pixels, lock favorite parts, and press Play to dance to live channel activity. PNG exports four poses; GIF exports a silent dance loop. Save project keeps the sprite with your music.
Audio emulation: nsf-js (ISC). Timing has not been verified on physical hardware.