The LM4560 supports Sound Blaster Pro/16 DOS games while improving gaming audio quality. The LM4560 supports both the legacy analog gameport and a Digital Enhanced Game Port. When coupled with DirectInputTM driver, the Digital Enhanced Game Port can save up to 12% of the CPU overhead nominally required by a conventional analog game port. The LM4560 employs a high precision 26-bit digital mixer, providing an accurate 20-bit output and higher than 90 dB signal-to-noise ratio when used with high quality AC97 Rev 1.03 and Rev 2.0 codecs.