furnace/doc/7-systems/pce.md

PC Engine/TurboGrafx-16

a console from NEC that, depending on a region:

• attempted to enter the fierce battle between Nintendo and Sega, but because its capabilities are a mix of third and fourth generation, it failed to last long (US and Europe), or
• was Nintendo's most fearsome rival, completely defeating Sega Mega Drive and defending itself against Super Famicom (Japan).

it has 6 wavetable channels and the last two ones also double as noise channels. furthermore, it has some PCM and LFO!

effects

• 10xx: change wave.
• 11xx: toggle noise mode. only available in the last two channels.
• 12xx: setup LFO. the following values are accepted:
  • 00: LFO disabled.
  • 01: LFO enabled, shift 0.
  • 02: LFO enabled, shift 4.
  • 03: LFO enabled, shift 8.
  • when LFO is enabled, channel 2 is muted and its output is passed to channel 1's frequency.
• 13xx: set LFO speed.
• 17xx: toggle LEGACY sample mode.
  • this effect exists only for compatibility reasons! its use is NOT recommended. use Sample type instruments instead.

info

this chip uses the PC Engine instrument editor.

channel status

the following icons are displayed when channel status is enabled in the pattern view:

• noise mode (channels 5 and 6 only):
  • off
  • on