Step One: Mount PCSX.dmg and drag the PlayStation Emulator "PCSX" to your applications folder
Step Two: Move the PlayStation Bios file "SCPH1001.BIN" to
/Users/<your short username>/Library/Application Support/Pcsx/Bios/
(If the directory doesn't exist, create it yourself)
Step Three: Run PCSX, go to Preferences, and uncheck everything that is checked, especially "Dynarec CPU core". Now click on the plug-ins tab, and ensure the mooby cd disk image driver is selected under the CD-ROM section.
Step Four: Use Split & Concat to combine the split .dmg file, mount the image, and drag the game discs to somewhere on your computer.
Step Five: Go to "File>Run CD", select game disc 1 off your computer, and play the game! I included the official game guide in case you get stuck. Enjoy!
Freeze state's don't work in PCSX, just use the save points in the game. Some people had issues mounting the game with toast (if you didn't, you're welcome to use that method), so this version of PCSX will allow you to mount cds using a plugin.