Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!sunic!kth.se!draken!d88-jwa From: d88-jwa@nada.kth.se (Jon Watte) Newsgroups: comp.sys.mac.hardware Subject: Re: ADB and blown motherboards Message-ID: <3054@draken.nada.kth.se> Date: 2 Mar 90 13:07:25 GMT References: <1494@key.COM> Reply-To: d88-jwa@nada.kth.se (Jon W{tte) Organization: Royal Institute of Technology, Stockholm, Sweden Lines: 17 In article <1494@key.COM> jbr@hongkong.key.COM (Jeff Rubin) writes: >phrase it in terms of my Mac IIcx. The keyboard (Apple extended) >has a button with a triangle on it that I use to turn the power >on. Since the keyboard is an ADB device, does the power-on >mechanism use the ADB? If so, does this imply that ADB has power The power-on mechanism is separate from the bus mechanism. There is no key code for the pover-on key, the only thing it does is sinking pin 2 on the bus (marked reserved or n/c) when pressed. Note: the power to sense this comes from the battery, therefore it's no wise idea to leave the key depressed for extended time. h+ -- --- Stay alert ! - Trust no one ! - Keep your laser handy ! --- h+@nada.kth.se == h+@proxxi.se == Jon Watte longer .sig available on request