CWP for SEGA Master System / SEGA Game Gear is a simple tool for playing custom waveforms in real time using the control pad. Works in an emulator and on hardware.

Features:
– 8 customisable waveforms
– Handy pre-loaded waveforms including sine, triangle and everyone’s favourite, square

Controls:
– Directional pad up / down / left / right: trigger a waveform
– Button 1 and directional pad up / down: change currently-selected sample
– Button 1 and directional pad left / right: change current cursor position / sample
– Button 2 and directional pad left / right: change currently-selected waveform

via little-scale