furnace/papers/doc/7-systems/pce.md
2022-01-16 01:10:43 -05:00

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# PC Engine/TurboGrafx-16
a console from NEC that 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.
it has 6 wavetable channels and the last two ones also double as noise channels.
furthermore, it has some PCM!
# 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 PCM mode.