Xref: utzoo comp.unix.aix:699 comp.unix.i386:3434 Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!milano!uudell!mustang!jrh From: jrh@mustang.dell.com (James R. Howard) Newsgroups: comp.unix.aix,comp.unix.i386 Subject: Re: Rebooting a PS/2 Keywords: help help help Message-ID: <2836@uudell.dell.com> Date: 9 Mar 90 23:02:35 GMT References: <7191@lynx.UUCP> Sender: news@uudell.dell.com Reply-To: jrh@mustang.dell.com (James R. Howard) Followup-To: comp.unix.aix Distribution: na Organization: Dell Computer Corp. Lines: 38 In article <7191@lynx.UUCP>, m5@lynx.uucp (Mike McNally) writes: > I know about the keyboard controller deal; like I said above, I've > got code that works on PC's. I suspect that there's something in > the clock RAM that tells the BIOS that the reset is not a cold boot, > but instead is a return to real mode. I don't have any hard facts. > > I'll be very thankful for any information. I'll even offer source > code to my excellent tomato sauce recipe. Well, I looked in the IBM PS/2 Model 80 Technical Reference Manual. According to the documentation, on page 4-13, the exact same keyboard controller reset should work. If not, then it is broken, since the document clearly states that pulsing the reset bit will reset the microprocessor. I don't know what code you have tried, judging by the newsgroups posted to, I would assume you are running aix or unix. At any rate, the easiest test for pure functionality according to their published specs, would be to boot DOS on the machine, and load up debug.com. Then do the following: C:\> debug -o 64,fe That should reboot the machine as described in the tech ref. If so, then you know it works, and the code you are using yourself is probably suspect. -------------------------------------------------------------- James Howard ..uunet!dell!mustang!jrh or jrh@mustang.dell.com The opinions stated are my own, and do not necessarily reflect the opinions of my employer, or anyone else. --------------------------------------------------------------