Contralogic has released 256 NES Samples, a free set of one shot samples in 16 Bit WAV format created with Famitracker’s emulation of the 2A03 soundchip.
A collection of 256 short percussive samples produced by an emulation of the 2A03 soundchip used in the NES console in 48kHz 16-bit WAV format.
You are free to use these samples for any purpose, but please don’t redistribute them in their original form.
These samples are available at no cost on Contralogic.
More info: 256 NES Samples