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43 lines
1.5 KiB
Markdown
43 lines
1.5 KiB
Markdown
# Game Boy Advance
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a portable video game console from Nintendo, succeeding the Game Boy.
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it adds two stereo sample audio channels which can be used directly ("DMA", left/right) or used in a software mixing driver (most games do this) in order to have multiple voices.
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# effects
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- `10xx`: **change wave.**
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## Game Boy Advance (MinMod)
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this is the software mixing driver available in Furnace. it is written by Natt Akuma.
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it features echo and up to 16 voices.
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- `10xx`: **change wave.**
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- `11xy`: **configure echo.**
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- this effect is kinda odd. here's how to use it:
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- create an empty instrument and put a very high note of it in channel 1.
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- put `110x` in the effect column.
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- set volume column to set feedback.
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- don't use the channel for anything else.
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- `12xy`: **toggle invert.**
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- `x` left channel.
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- `y` right channel.
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## info
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this chip uses the [GBA DMA](../4-instrument/gbadma.md) and [GBA MinMod](../4-instrument/gbaminmod.md) instrument editors.
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## chip config
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the following options are available in the Chip Manager window:
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- **DAC bit depth**: sets the bit depth.
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these options are available when using MinMod:
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- **Volume scale**: scale volumes to prevent clipping/distortion.
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- **Mix buffers**: sets how many mix buffers will be stored in memory. higher values result in longer echo.
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- **Channel limit**: sets the number of channels that will be available. higher values use more CPU.
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- **Sample rate**: sets the mixing rate. higher values use more CPU.
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