by the use of the ALSA-OSS compatibility API and the OSS-emulation kernel modules. Mockingboard support on the Apple II is usually incorporated into the programs itself as many programs for the Apple II boot directly from disk. However a TSR is shipped on a disk that adds instructions to Apple Basic so users can create programs that use the card, provided that the TSR is loaded first. List of sound card manufacturers AIM Asus Advanced Gravis Computer Technology (defunct) AdLib (defunct) Aureal Semiconductor (defunct) Auzentech (defunct) Aztech Labs Behavior Tech Computer Behringer C-Media Creative Technology Conexant E-mu (bought out by Creative) Ensoniq (bought out by Creative) ESI HT Omega Lynx Studio Technology MARIAN M-Audio Onkyo Prism Sound Realtek Semiconductor RME Roland Trident Microsystems (defunct) Turtle Beach Systems VIA Technologies Yamaha Zoltrix (AdLib clone manufacturer) See also Analog Devices Sound chip EAX ASIO Audio signal processing Audio Libraries (Categories) Codec Virtual Studio Technology (VST) Cross-platform Audio Creation Tool (XACT) DirectSound DirectMusic OpenAL Programmable sound generator Dolby Digital Dolby Digital EX S Logic SNR Sound card mixer Audio compression (data) PC System Design Guide Notes References External links Jumper settings for many sound cards History of PC sound hardware Hardware acceleration Sound cards