From owner-freebsd-hackers Sun Oct 27 20: 2:21 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8342D37B401 for ; Sun, 27 Oct 2002 20:02:20 -0800 (PST) Received: from harmony.village.org (rover.bsdimp.com [204.144.255.66]) by mx1.FreeBSD.org (Postfix) with ESMTP id DA8D443E3B for ; Sun, 27 Oct 2002 20:02:19 -0800 (PST) (envelope-from imp@bsdimp.com) Received: from localhost (warner@rover2.village.org [10.0.0.1]) by harmony.village.org (8.12.3/8.12.3) with ESMTP id g9S42Ipk026143; Sun, 27 Oct 2002 21:02:18 -0700 (MST) (envelope-from imp@bsdimp.com) Date: Sun, 27 Oct 2002 21:01:25 -0700 (MST) Message-Id: <20021027.210125.27780229.imp@bsdimp.com> To: davek@saturn5.com Cc: gkshenaut@ucdavis.edu, hackers@FreeBSD.ORG Subject: Re: Programming the Parallel Port using ppi. From: "M. Warner Losh" In-Reply-To: References: <200210280155.g9S1tiQ69311@thistle.bogs.org> X-Mailer: Mew version 2.1 on Emacs 21.2 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message: David Nicholas Kayal writes: : Shouldn't 0xff result in 5v outputs? Depends on of the pins are negative logic, now doesn't it :-) And most Parallel ports I've measured clock in at about 3.3V. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message