On Tue, Nov 24, 2015 at 3:13 AM, Johnny Billquist <b...@update.uu.se> wrote:
> The RH11 do DMA, just like all other disk controllers I know of.

IIRC, the RX11/RX211 (Unibus) and RXV11/RXV21 (Qbus) don't do DMA.

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