>Yes, ADB is a serial protocol. But the power key is the only key in ADB >keyboards to have a wire of its own. The ADB bus has four lines: +5 V, ground, >data and reset. The fourth line is where the "power" key is connected. It's >inherited from the origins of the ADB bus, first used in the Apple IIgs >series. There, it was used as a Reset key, much in the same way as the >Macintosh's Programmers Switch. If the reset line on the ADB bus was connected >to ground, the machine rebooted. Later, when ADB was adopted by the Macintosh >in the Mac SE and Mac II models, the reset key was redefinded as a power key. > >BTW: I'm almost sure than in the original ADB keyboard released with the IIgs >(the "borderless" one), you had to press the Control key in addition to the >Reset key in order to it to work (it was the way the Reset key worked in all >Apple II models except for the original Apple II from 1977). This was made to >reduce the chance of resetting the machine accidentally and, of course, was >changed in later Macintosh keyboards. >
Thank you Antonio The power key also does respond as a reset key on my Classic II in combination I think with Control and Shift (I was randomly playing while reading your email when I reset my Mac accidentally!), so it is a separate line as you say but can it still be read by a DA for example? As your other post indicated later OS's support it on the same hardware so it is only a software or OS issue as far as I can see. Regards Sean. -- Compact Macs is sponsored by <http://lowendmac.com/>. Support Low End Mac <http://lowendmac.com/lists/support.html> Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:compact.macs@mail.maclaunch.com> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/> --------------------------------------------------------------- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---------------------------------------------------------------
