Date: Thu, 03 Oct 1996 07:11:46 -0700 From: David Greenman <dg@root.com> To: Tor Egge <Tor.Egge@idt.ntnu.no> Cc: bde@zeta.org.au, freebsd-hackers@freebsd.org Subject: Re: Interrupt lossage in FreeBSD-current. Message-ID: <199610031411.HAA12090@root.com> In-Reply-To: Your message of "Thu, 03 Oct 1996 15:14:31 %2B0200." <199610031314.PAA15348@pat.idt.unit.no>
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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. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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