Changes between Initial Version and Version 1 of Ticket #4605, comment 28
- Timestamp:
- Oct 6, 2016 9:41:20 AM (8 years ago)
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Ticket #4605, comment 28
initial v1 17 17 18 18 "auich" is an AC-97 driver for NetBSD. It estimates the clock rate of the (emulated) AC-97 by recording certain number of frames from PCM_LR and measuring the time it took. And the result is very surprising: it concludes that the AC-97 is running at whopping 454 KHz rather than the correct rate 48 KHz: 19 https://github.com/IIJ-NetBSD/netbsd-src/blob/0f8baa2e4f7d11d069276467b3565eaab702c0d9/sys/dev/pci/auich.c#L1638 19 * https://github.com/IIJ-NetBSD/netbsd-src/blob/0f8baa2e4f7d11d069276467b3565eaab702c0d9/sys/dev/pci/auich.c#L1638 20 * http://gnats.netbsd.org/32569 20 21 21 22 This either means the clock of the guest CPU (or perhaps RTC) is running insanely slow (unlikely!), or the emulated AC-97 is sending the recorded frames insanely fast. But since my knowledge about these things is rather limited so I have no idea what is really going on. Do you have any idea?
