Reads Sony license string from PS1 BIOS file (pain)

PSX.swift

class BUS {
    var cpu: CPU!
    
    var rom: UnsafeMutablePointer<UInt8>! = nil
    
    init() {
        self.cpu = CPU(bus: self)
        
        do {
            var data = try Data(contentsOf: Bundle.main.url(forResource: "SCPH9002", withExtension: "BIN")!)
            data.withUnsafeMutableBytes { pointer in
                guard let bytes = pointer.bindMemory(to: UInt8.self).baseAddress else {
                    return
                }
                
                self.rom = bytes
            }
            
            var dst = UnsafeMutablePointer<CChar>.allocate(capacity: 0x1F) // strlen("Sony Computer Entertainment Inc") = 31 (0x1F)
            memcpy(dst, self.rom + 0x108, 0x1F)
            
            print(String(cString: dst, encoding: .utf8) ?? "")
        } catch {
            print(error.localizedDescription)
        }
    }
    
    func tick() {
        
    }
}

class CPU {
    var bus: BUS!
    init(bus: BUS) {
        self.bus = bus
    }
}


/*
  Usage:

  let bus = BUS() // will show license string
  while true {
    bus.tick() // unused
}
*/