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test_dma_playback_time should underflow but does not #844

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sbourdeauducq opened this issue Oct 30, 2017 · 2 comments
Open

test_dma_playback_time should underflow but does not #844

sbourdeauducq opened this issue Oct 30, 2017 · 2 comments
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@sbourdeauducq
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This is a 200ns sequence played 20k times. The CPU cannot keep up with that.
SED is not affected and correctly reported the underflow (20a5f09).
@whitequark
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We only have SED now, right?

@sbourdeauducq
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In ARTIQ-4 and the future yes AFAICT, but not in release-3. But yes, there are more important things, like the camera driver.

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