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.**
  - `0`: pulse
  - `1`: saw
  - `2`: triangle
  - `3`: noise
- `22xx`: **set duty cycle.** range is `0` to `3F`.
- `EExx`: **ZSM synchronization event.**
  - Where `xx` is the event payload. This has no effect in how the music is played in Furnace, but the ZSMKit library for the Commander X16 interprets these events inside ZSM files and optionally triggers a callback routine. This can be used, for instance, to cause game code to respond to beats or at certain points in the music.

# info

this chip uses the [VERA](../4-instrument/vera.md) and [Generic Sample](../4-instrument/amiga.md) instrument editors.
add doc for VERA chip 2022-03-22 05:16:19 +00:00			`# 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.`

VERA: Furnace does support stereo for panning 2022-03-22 06:18:22 +00:00			`currently Furnace does not support the PCM channel's stereo mode, though (except for panning).`
add doc for VERA chip 2022-03-22 05:16:19 +00:00
			`# effects`

Lots of little cleanup. Trying for more consistency and clarity, especially for quick reference. 2023-06-25 07:05:30 +00:00			- `20xx`: set waveform.
			- `0`: pulse
			- `1`: saw
			- `2`: triangle
			- `3`: noise
			- `22xx`: set duty cycle. range is `0` to `3F`.
Changed EFxx to EExx at request of tildearrow 2023-07-05 22:29:11 +00:00			- `EExx`: ZSM synchronization event.
VERA, ZSM Export: Add EFxx event as synchronization message, add sync message support in ZSM export 2023-07-05 22:07:44 +00:00			- Where `xx` is the event payload. This has no effect in how the music is played in Furnace, but the ZSMKit library for the Commander X16 interprets these events inside ZSM files and optionally triggers a callback routine. This can be used, for instance, to cause game code to respond to beats or at certain points in the music.
Documentation stuff! New page for the effect list, updates to chanOsc, and links to instrument types from every "system" page. 2023-08-04 16:11:53 +00:00
			`# info`

Teensy formatting change. None of these should be list items. It was a bad idea. 2023-08-04 16:38:05 +00:00			`this chip uses the [VERA](../4-instrument/vera.md) and [Generic Sample](../4-instrument/amiga.md) instrument editors.`