At the moment ec1841 fails system board test (on the tps2214 floppy from softlist) -- it tests that DMA channel 0 counter is increasing and it doesn't.

Apparently this is because BIOS programs PIT first, DMAC second, and then resets DMAC [1]; but DMAC reset does not clear m_u73_q2 and further DMA cycles aren't triggered.

[1] code starting on line 4880 in