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VERA version number fix.

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Electric Keet 2025-08-09 15:25:17 -07:00 • committed by tildearrow
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doc/7-systems/vera.md
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@ -1,10 +1,12 @@
# 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.
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).
depending on the computer's configuration, the VERA may appear alongside one [Yamaha OPM](ym2151.md) or two [Yamaha OPL3](opl.md) chips.
## effects
- `20xx`: **set waveform.**
@ -25,5 +27,8 @@ this chip uses the [VERA](../4-instrument/vera.md) and [Generic Sample](../4-ins
the following options are available in the Chip Manager window:
- **Chip revision**: sets which revision of the chip to use.
- V 47.0.0 introduces a slightly different volume table.
- **Chip revision**: sets which version of the chip's firmware to use.
- **V 0.3.1**: all earlier versions.
- **V 47.0.2 (9-bit volume)**: introduces a slightly different volume table.
- **V 48.0.1 (Tri/Saw PW XOR)**: adds the ability to XOR the triangle or sawtooth waveforms with a pulse wave.
- **X16 Emu R49 (Noise freq fix)**: fixes an emulation bug that previously doubled the noise frequency. default.