From owner-freebsd-hackers Sun Sep 28 15:57:58 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id PAA28459 for hackers-outgoing; Sun, 28 Sep 1997 15:57:58 -0700 (PDT) Received: from usr07.primenet.com (tlambert@usr07.primenet.com [206.165.6.207]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id PAA28437 for ; Sun, 28 Sep 1997 15:57:26 -0700 (PDT) Received: (from tlambert@localhost) by usr07.primenet.com (8.8.5/8.8.5) id PAA18439; Sun, 28 Sep 1997 15:56:49 -0700 (MST) From: Terry Lambert Message-Id: <199709282256.PAA18439@usr07.primenet.com> Subject: Re: INB question To: tony@dell.com (Tony Overfield) Date: Sun, 28 Sep 1997 22:56:48 +0000 (GMT) Cc: tlambert@primenet.com, hackers@FreeBSD.ORG In-Reply-To: <3.0.2.32.19970927055543.006bd29c@bugs.us.dell.com> from "Tony Overfield" at Sep 27, 97 05:55:43 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > Port 0x18, on many systems, is an alias of port 0x08, which is > the read-only DMA status register and the write-only DMA command > register. Likewise, port 0x1A is often an alias of the write-only > port 0x0A DMA mask register. Peachy. I suppose this was done "for no good reason", as usual in PC hardware design. 8-(. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.