From owner-freebsd-hackers Sun Jul 11 15:36:36 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from rover.village.org (rover.village.org [204.144.255.49]) by hub.freebsd.org (Postfix) with ESMTP id 1B47D14DD1 for ; Sun, 11 Jul 1999 15:36:16 -0700 (PDT) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.9.3/8.9.3) with ESMTP id QAA13403; Sun, 11 Jul 1999 16:36:19 -0600 (MDT) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (localhost.village.org [127.0.0.1]) by harmony.village.org (8.9.3/8.8.3) with ESMTP id QAA36877; Sun, 11 Jul 1999 16:34:42 -0600 (MDT) Message-Id: <199907112234.QAA36877@harmony.village.org> To: Mark Murray Subject: Re: PCCARD and Vpp voltage Cc: Bill Paul , hackers@FreeBSD.ORG In-reply-to: Your message of "Sun, 11 Jul 1999 13:18:59 +0200." <199907111119.NAA16211@gratis.grondar.za> References: <199907111119.NAA16211@gratis.grondar.za> Date: Sun, 11 Jul 1999 16:34:42 -0600 From: Warner Losh Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message <199907111119.NAA16211@gratis.grondar.za> Mark Murray writes: : The low-voltage cards are keyed so you cannot plug them into 5v : slots; perhaps the dual-voltage slots have protective circuitry : that co-operates with this? Yes. The dual voltage cards are supposed to bring certain pins high and/or low to denote which voltages they like. In my brief reading of the Mindshare books, it appears that cards are only required to take 5V on Vcc, but aren't required to take it on Vpp. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message