Trying to find an ADI 198x Integrated Audio driver for AC97, Sound Blaster emulation keeps failing with messages like "your system does not support this" etc.
There must be some sort of add-on I can install, somewhere in the far reaches of the web.
Aha! Now I understand. Some audio chips support a Sound Blaster emulation mode, but generally that mode needs to be enabled in the BIOS. If your BIOS does not have the option to enable SB support (it might also be labeled as legacy sound support), then you are probably out of luck.
I had the same problem with a VIA sound chip; my BIOS did not support enabling the SB emulation, so I ended up putting an old SB card in a machine I use for DOS development.