The Freedom Fighter proto version runs on modified Star Rider HW, using the Philips 22VP931 laserdisc player insted of the Pioneer PR-8210A. 22VP931 is also used in Firefox which is already emulated. The non-proto version runs on a dedicated boardset, with the same LDP. Both rom dumps are available but none emulated so far. There was a preliminary Star Rider driver running in Daphne decades ago.