furnace/doc/7-systems/vera.md

VERA

this is a video and sound generator chip used in the Commander X16, a modern 8-bit computer created by The 8-Bit Guy. it has 16 channels of pulse/triangle/saw/noise and one stereo PCM channel.

currently Furnace does not support the PCM channel's stereo mode, though (except for panning).

effects

• 20xx: set waveform. the following values are accepted:
  • 0: pulse
  • 1: saw
  • 2: triangle
  • 3: noise
• 22xx: set duty cycle. xx may go from 0 to 3F.