From owner-freebsd-hackers Mon Feb 17 10:17:28 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id KAA03309 for hackers-outgoing; Mon, 17 Feb 1997 10:17:28 -0800 (PST) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id KAA03287 for ; Mon, 17 Feb 1997 10:17:19 -0800 (PST) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id SAA04041; Mon, 17 Feb 1997 18:27:13 +0100 From: Luigi Rizzo Message-Id: <199702171727.SAA04041@labinfo.iet.unipi.it> Subject: Re: ccd and bounce buffers To: scrappy@hub.org (The Hermit Hacker) Date: Mon, 17 Feb 1997 18:27:13 +0100 (MET) Cc: kuku@gilberto.physik.rwth-aachen.de, freebsd-hackers@freefall.freebsd.org In-Reply-To: from "The Hermit Hacker" at Feb 17, 97 01:17:26 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > On Mon, 17 Feb 1997, Christoph Kukulies wrote: > > > > > Is it definite that ccd doesn't work for ISA (be it SCSI or IDE) > > due to bounce buffers being required? I don't see the problem for IDE since it uses PIO mode and the CPU can access memory anywhere. Luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________