Native (WDM) HD Audio driver for Windows 98se/Me

[SweetLow]

14 hours ago, Drew Hoffman said:

Which system are you still having the looping problem on? Is it the Nvidia MCP78 or the Sunrise Point PCH or something else?

Realtek ALC887 @ Intel Comet Point-V PCH (Intel Core gen 10 Desktop Motherboard), of course.

[SweetLow]

On 1/28/2026 at 7:15 PM, Drew Hoffman said:

it was the HD Audio Controller's PCIe transactions no-snoop bit

Ok, I paid some time to check what happens. With high probability clearing this bit is palliative. It will work only on PCI-E devices. But HDA Controller can be pure PCI device that need uncached buffers or flushing cache explicitly to work properly with very high probability.

And JFYI - older Indel HDA controllers are PCI-E devices but newer (including my test system) are PCI.

 

Edited 4 minutes ago by SweetLow