opll2opl
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VGM converter from OPLL to OPLx
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# opll2opl
OPLL to OPLx data converter for VGM files.
# Install
```
$ npm install -g opll2opl
```
# Usage
## Convert YM2413 track in VGM to YM3812
```
$ opll2opl -t ym3812 sample.vgm
```
The resulting VGM file will be written into the current directly. The default file name is `output.vgm`.
## Convert AY-3-8910 track in VGM to Y8950
```
$ opll2opl -p y8950 sample.vgm
```
Since this will emulate PSG sound with 2-OP synthesis, do not expect PSG conversion is perfect. Hardware envelope is not supported and noise frequency is limited.
## Convert both YM2413 and AY-3-8910 tracks in VGM to YMF262
```
$ opll2opl -t ymf262 -p ymf262 sample.vgm
```
It is not allowed to specify the same device to `-t` and `-p` option exepct ymf262 (ymf262 has dual OPL2 compatible components).
# Options
```
Usage: cmd.ts [options] vgmfile
Options:
--version Show version number [boolean]
--to, -t Convert ym2413 track to specified device.
[choices: "ym3812", "ym3526", "y8950", "ymf262", "thru", "none"] [default:
"thru"]
--psg-to, -p Convert ay-3-8910 track to specified device. ym2413 and
ay-3-8910 tracks are converted simultaneously only if ymf262 is
selected.
[choices: "ym3812", "ym3526", "y8950", "ymf262", "thru", "none"] [default:
"thru"]
--output, -o Specify output file name
--zip, -z Zip-compress output [boolean]
--help Show help [boolean]
```