Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) id JAA18025 for pups-liszt; Sat, 30 Jan 1999 09:38:19 +1100 (EST) Received: from eclipse.scl.cwru.edu (eclipse.SCL.CWRU.Edu [129.22.32.56]) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) with ESMTP id JAA18019 for ; Sat, 30 Jan 1999 09:38:10 +1100 (EST) Received: (from smap@localhost) by eclipse.scl.cwru.edu (8.8.8/adam2.2) id RAA19184 for ; Fri, 29 Jan 1999 17:38:06 -0500 (EST) Received: from (k2.scl.cwru.edu [129.22.32.50]) by eclipse via smap (V2.0) id xma019182; Fri, 29 Jan 99 17:38:02 -0500 Received: by k2.cwru.edu (8.6.12/SMI-SVR4) id RAA06860; Fri, 29 Jan 1999 17:42:12 -0500 Received: from (skybridge.scl.cwru.edu [129.22.32.1]) by k2.scl.cwru.edu via smap (V2.0) id xma006858; Fri, 29 Jan 99 22:42:10 GMT Received: by skybridge.scl.cwru.edu (SMI-8.6/SMI-SVR4) id RAA04823; Fri, 29 Jan 1999 17:52:00 -0500 Date: Fri, 29 Jan 1999 17:52:00 -0500 From: mxs46@k2.scl.cwru.edu (Michael Sokolov) Message-Id: <199901292252.RAA04823@skybridge.scl.cwru.edu> To: pups@minnie.cs.adfa.edu.au Subject: Re: low-end vaxen and unix Sender: owner-pups@minnie.cs.adfa.edu.au Precedence: bulk Ken Wellsch wrote: > On a KA410 (VAXstation 2000 etc.) the MFM controller and the NCR 5380 > both do DMA to a shared 16Kb private memory buffer. You then have to > pull your data out into the regular VAXen memory. I believe the Lance > chip (ethernet) is the only DMA to main memory capable device. Correct. Michael Sokolov TUHS 4BSD Coordinator 4.3BSD-* Maintainer Quasijarus Project Principal Architect & Developer Phone: 440-449-0299 or 216-217-2579 ARPA Internet SMTP mail: mxs46@k2.scl.cwru.edu TUHS WWW page: http://minnie.cs.adfa.edu.au/TUHS/ Quasijarus WWW page: http://minnie.cs.adfa.edu.au/Quasijarus/