Date: Thu, 03 Oct 1996 16:37:48 +0200 From: Tor Egge <Tor.Egge@idt.ntnu.no> To: dg@root.com Cc: bde@zeta.org.au, freebsd-hackers@freebsd.org Subject: Re: Interrupt lossage in FreeBSD-current. Message-ID: <199610031437.QAA17866@pat.idt.unit.no> In-Reply-To: Your message of "Thu, 03 Oct 1996 07:11:46 -0700" References: <199610031411.HAA12090@root.com>
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> >I no longer see this as a latency issue with regard to the RTC. > >Something else was causing one RTC interrupt to be lost. > > I used to see a problem with using "DUMMY_NOPS" where the RTC interrupt > acknowledge would be missed due to the time-delay constraints not being met. > If you're using DUMMY_NOPS, then this could be your problem. If you're not, > then the problem could be caused by your system eating the inb(0x84) without > adding enough delay. All NOPs disappeared in revision 1.7 of /sys/i386/include/asmacros.h. (I'm running 2.2-current). - Tor Egge
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