This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
The ApplePC DOS-emulator has built-in Mockingboard emulation. Here's a section of the version 2.52a 'apple.doc' from David Ellsworth: "ApplePC emulates the Mockingboard through any Adlib compatible sound card (all Soundblaster compatibles are Adlib compatible). "One and a half (1.5) Mockingboards are emulated, for a total of nine voices. The Mockingboards are 'perched' in slots 4 and 5. The one in slot 4 has six voices. The one in slot 5 has three voices. This is because the Adlib card has only nine channels." The Apple in PC emulator (AiPC) and a newer version of AppleWin (v1.12.3) also offer varying levels of Mockingboard support. ___________________________ By: Wayne Stewart