Date: Sat, 26 Dec 1998 23:24:54 -0500 (EST) From: zhihuizhang <bf20761@binghamton.edu> To: hackers <freebsd-hackers@FreeBSD.ORG> Subject: Questions about interrupt handling Message-ID: <Pine.SOL.L3.93.981226220445.11330A-100000@bingsun2>
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Hi, I know that FreeBSD handles interrupts on a software basis which means that we do not mask any interrupt off in 8259. I am just wondering if a certain interrupt is masked off in 8259 or it does not get serviced quick enough, what will the device controller (such as disk controller) respond? Will it re-issue the interrupt or just give up? Or will it NOT generate another interrupt until the previous one has been serviced? Maybe different device controllers behave differently. Thanks for any help. -------------------------------------------------- | Zhihui Zhang, http://cs.binghamton.edu/~zzhang | | Dept. of Computer Science, SUNY at Binghamton | -------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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