How about Kontakt?
JP-8080 supersaw sounds recreated in Kontakt:
https://soundcloud.com/user-533108332-4 ... in-kontakt
I think those Kontakt patches are pretty close to JP-8080 sounds in "SUPERSAW CHALLENGE: U-he's HIVE vs Roland's JP-8080" video.
No samples were used in the Kontakt patches. All sounds are based on Kontakt's basic saw wavetable.
Recorded straight from Kontakt without any external effects.
Please feel free to comment if you can hear some difference to JP-8080 hardware sound.
I don't have the hardware or access to settings used in the original JP-8080 patches, so I might have missed something.