Date: Sun, 7 Apr 1996 10:22:00 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: dennis@etinc.com (dennis) Cc: melrobin@Jetson.UH.EDU, hackers@freebsd.org Subject: Re: BROKEN_KBD still doesnt work Message-ID: <199604070052.KAA05301@genesis.atrad.adelaide.edu.au> In-Reply-To: <199604061926.OAA13663@etinc.com> from "dennis" at Apr 6, 96 02:26:26 pm
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dennis stands accused of saying: > > > >I posted about a week ago on my friend's machine repeatedly getting this > >error. I traced the error message to the vm_machdep.c module where the > >BROKEN_KEYBOARD_RESET option is present. I want to work on this problem as > >soon as I find more literature about the hardware involved, namely > >datasheets or databooks on the keyboard controllers. Is your keyboard > >controller the 8042 or some other? > > AMIKEY-2, obviously an AMI prop chip. This is pretty frightening. It's an 8042 with AMI's own labelling on it. The problem has been discussed lengthily before; check the -questions and -hackers archive for discussions by Rod and others. > BTW, its an ACER 486-PCI MB. That would make it an ALI chipset? Most of the offenders I've run into so far have been 486 PCI boards based on a UMC chipset. The problems are twofold : - The keyboard controller doesn't respond to the normal command that should cause it to strobe the reset line. - Causing a processor triple-fault fails to cause the chipset to generate a reset. If you get a hang when rebooting, but no "Keyboard reset failed..." message, then you have a board that may respond to BROKEN_KEYBOARD_RESET. (ie. it wedges when you try it). > Dennis -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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