Nmi Error
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Chen - MSFTFebruary 27, 200728 Share 0 0 I promised to talk more about NMI, so here it is. What generates an NMI? What does it mean? The first question is easy to answer but doesn't actually shed maskable and non maskable interrupt much light: Any device can pull the NMI line, and that will generate nmi gateway a non-maskable interrupt. Back in the Windows95 days, a few really cool people had taken the ball-point pen trick one step non maskable interrupt in 8086 further: They had a special expansion card in their computer with a cord coming out the back. At the end of the cord was a momentary switch like the one you might see on
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a quiz show. If you pressed it, the card generated an NMI. No fumbling around with ball-point pens for these folks, no-ho! (To be honest, I had two of these. One of them was a simple NMI card, triggered by a foot pedal! The other was really a card with a high-resolution real-time clock that could be used for performance analysis. I used the NMI button far more non maskable interrupt example often than the timer...) In practice, the only device that generates an NMI (on purpose) is the memory controller, which raises it when a parity error is detected. The non-geek explanation of a parity error: Your memory chips are acting flakey. Here's what a parity error looks like. It shows up as a mysterious "Hardware Malfunction" error. Now, it's possible that a device may be generating an NMI by mistake. For example, in Wendy's case, it may have been due to damaged caused by overheating. If you suspect your memory chips, you can run a memory diagnostic tool to see if it can find the bad memory. My colleague Keith Moore reminded me that paradoxically, on the IBM PC-AT, you could mask the non-maskable interrupt! This definitely falls into the category of "Unclear on the concept." The masking was done in hardware that could be configured via some magic port I/O. It prevented the NMI from reaching the CPU in the first place. (NMI is still not maskable in the CPU.) Tags Tips/Support Comments (28) vince says: February 27, 2007 at 10:24 am At least on Linux, watchdog timers and performance counters also trigger NMIs. Tomer Chachamu says: February 27, 2007
the most common of which is a parity error. This interrupt causes all processing to immediately cease so the error condition nmi northwestern can be handled. Some systems, when this issue is detected, will give
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you the option of disabling the NMI signal and continuing on, or rebooting the machine. Some will just
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halt the system and force you to do a hard reset. This error message is almost always preceded by another error message which states what the cause of the NMI was.
https://blogs.msdn.microsoft.com/oldnewthing/20070227-00/?p=27843 All of the regular interrupts normally in use and referred to by number are called maskable interrupts. The processor is able to mask, or temporarily ignore, any interrupt if it needs to, in order to finish something else that it is doing. In addition, however, most BIOS's have a non-maskable interrupt (NMI) that can be used for serious conditions that demand http://www.dewassoc.com/support/bios/errors/disable_nmi.htm the processor's immediate attention. The NMI cannot be ignored by the system unless it is specifically disabled. When an NMI signal is received, the processor immediately stops all other forms of processing and focuses on the NMI condition. The NMI signal is normally used only for critical problem situations, such as serious hardware errors. The most common use of NMI is to signal a parity error from the memory subsystem. This error must be dealt with immediately to prevent possible data corruption. Diagnosis: This message is self-explanatory and is not an error message in and of itself, but rather is accompanied by an error message. Recommendation: Address the problem by diagnosing the error message that caused the NMI. Warning: Disabling NMI will cause the system to keep booting, ignoring the error condition. This can lead to unpredictable results and is not recommended. Notice: Windows® 95, Windows® 98, Windows® NT, Windows® 2000 and Microsoft® Office are registered trademarks or trademarks of the Microsoft Corporation. All other trademarks are the property of their respective owners. Copyright ©1995-2001 DEW Associates Corporation. All rights reserved.Things Small and Medium Business Service Providers All Solutions Services Advise, Transform and Manage Financing and Flexible Capacity IT Support https://community.hpe.com/t5/ProLiant-Servers-ML-DL-SL/a-Non-Maskable-Interrupt-NMI-error/td-p/2539215 Services Education and Training Services All Services Products Integrated https://www.youtube.com/watch?v=QiMqQ-RlMDo Systems Composable Systems Converged Systems Hyper Converged Systems Blade Systems Infrastructure Management Software Application Lifecycle Management Application Delivery Management Big Data Analytics DevOps Enterprise Security Hybrid and Private Cloud Information Governance Information Management IT Service Management non maskable Operations Management Server Management Software as a Service (SaaS) Software-Defined Data Center Storage Management All Software Servers Rack Servers Tower Servers Blade Servers Density Optimized Mission Critical Servers Servers for Cloud Server Management All Servers Storage All-flash and Hybrid Storage Midrange and Enterprise Storage Entry Storage non maskable interrupt Systems Data Availability, Protection and Retention Software Defined Storage Management and Orchestration Storage Networking All Storage Networking Switches Routers Access Points and Controllers Wireless LAN Campus and Branch Networking Data Center Networking Wide Area Network Software Defined Networking Network Functions Virtualization Network Management All Networking About UsSupportClearType to search2086159Solutions Transform to a Hybrid Infrastructure Protect Your Digital Enterprise Empower the Data-Driven Organization Enable Workplace Productivity Cloud Security Big Data Mobility Infrastructure Internet of Things Small and Medium Business Service Providers All Solutions Services Advise, Transform and Manage Financing and Flexible Capacity IT Support Services Education and Training Services All Services Products Integrated Systems Composable Systems Converged Systems Hyper Converged Systems Blade Systems Infrastructure Management Software Application Lifecycle Management Application Delivery Management Big Data Analytics DevOps Enterprise Security Hybrid and Private Cloud Information Governance Information Management IT Service Manageme
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