"Jared D. McNeill" <jmcneill@invisible.yi.org> writes:

> Will the ESS 1688 work without a DMA channel?

(finally got around to looking at my manuals) It can. There is a
programmed I/O mode in this series of chips (you end up writing
128-byte blocks at a time), but it is a bit more CPU intensive and our
driver doesn't currently support it.

        - Nathan