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Wohlstand / OPN2BankEditor

A small cross-platform editor of the OPN2 FM banks of different formats (Downloads in README below)
GNU General Public License v3.0
40 stars 8 forks source link

support importing OPL musical instruments #109

Closed denjhang closed 10 months ago

denjhang commented 3 years ago

I want to import an opl2 or OPL3 instrument, which can be used as an opn2 instrument after a little modification

freq-mod commented 3 years ago

OPL and OPN chips don't have that much in common. Register maps aren't compatible at all, parameters have different bit depth (AR on OPL3 has 0-15 values, AR on OPN2 has 0-31 for example) and a lot of other caveats. So, I heavily doubt it's possible

freq-mod commented 3 years ago

Ah, I forgot. ADSR differs so wildly between these two chip families, (sustain, decay, rate scale level) instrument after import would be a total mess. The same applies to OPN -> OPL, since OPL doesn't have secondary Decay.

denjhang commented 3 years ago

@freq-mod In fact, there is a conversion program to realize the conversion from OPL VGM to OPN VGM. Please refer to this project https://github.com/digital-sound-antiques/vgm-conv I tried many OPL VGM files, which can be converted to OPN normally without exception.

Wohlstand commented 10 months ago

Closing as abandoned.