It sounds like you're looking for the PSP portable version of the arcade classic Cadillacs and Dinosaurs (also known as Cadillacs: Kyouryuu Shin Seiki).
to be placed in the same ROMs folder for the audio to function correctly. Setup Steps cadillacs and dinosaurs psp iso portable
Diverse Roster: You can choose between four distinct characters: Jack: A balanced all-rounder. It sounds like you're looking for the PSP
Cadillacs and Dinosaurs (Mustapha CAD) - PSP ISO cadillacs and dinosaurs psp iso portable
Place your ROM zip file in the ROMS folder within the emulator directory. 2. Using OpenBOR (Open Beats of Rage)