NPR and the RX11 (was Re: help needed: problem with UNIBUS access on my PDP-11/70)

From: Ethan Dicks <>
Date: Mon Jul 15 22:57:00 2002

--- Tony Duell <> wrote:
> THat's right. Later cards (like the DZ11) do short CA1 to CB1. Older
> cards (DL11, RX11, etc) don't.

This suggests that the RX11 is not a DMA device. Is that so? I
never played with 8" floppies much with Unibus, mostly with OMNIBUS
and Qbus. I have an RX11 but it's in an 11/05 that I haven't dug
down to yet.


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Received on Mon Jul 15 2002 - 22:57:00 BST

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