Date: Fri, 17 Nov 2000 07:39:56 +0100 From: Wilko Bulte <wkb@freebie.demon.nl> To: Warner Losh <imp@village.org> Cc: Sheldon Hearn <sheldonh@uunet.co.za>, Alfred Perlstein <bright@wintelcom.net>, "Steven E. Ames" <steve@virtual-voodoo.com>, Soren Schmidt <sos@freebsd.dk>, Boris Popov <bp@butya.kz>, Valentin Chopov <valentin@valcho.net>, current@freebsd.org Subject: Re: CURRENT is freezing again ... Message-ID: <20001117073956.C814@freebie.demon.nl> In-Reply-To: <200011171826.LAA75925@harmony.village.org>; from imp@village.org on Fri, Nov 17, 2000 at 11:26:02AM -0700 References: <2967.974461715@axl.fw.uunet.co.za> <200011171826.LAA75925@harmony.village.org>
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On Fri, Nov 17, 2000 at 11:26:02AM -0700, Warner Losh wrote: > In message <2967.974461715@axl.fw.uunet.co.za> Sheldon Hearn writes: > : The problem with a hard lock-up out of which you can't escape into the > : debugger is that it makes meaningful bug reports impossible. My non-SMP > : workstation has exhibited apparently arbitrary lock-ups since the advent > : of SMPng. > > You can also short IOCHK to ground to get an NMI which kicks you into > the debugger, even in an interrupt context. I have a card I built > from an old multi-function card to do this. I think it is A1 and A2, > but I don't have my ISA bus spec handy. Just stick a metal pin (ballpoint works well) into the ISA connector between the pins closest to the back of the machine. That is IOCHKN and GND respectively. Wilko [hardware designer gone bad..] -- Wilko Bulte Arnhem, the Netherlands wilko@freebsd.org http://www.freebsd.org http://www.nlfug.nl To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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