Difference between revisions of "Triple fault"
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Triple faults were the solution to a problem with the [[Intel 80286]], which was that once they were in [[protected mode]], there was no way to return to [[real mode]]. Causing a triple fault turned out the be the answer. This issue was fixed in the successor [[Intel 80386]]. | Triple faults were the solution to a problem with the [[Intel 80286]], which was that once they were in [[protected mode]], there was no way to return to [[real mode]]. Causing a triple fault turned out the be the answer. This issue was fixed in the successor [[Intel 80386]]. | ||
| − | [[Category: | + | ==External links== |
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| + | * [http://www.rcollins.org/Productivity/TripleFault.html Triple Faulting the CPU] | ||
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| + | [[Category: Intel Microprocessors]] | ||
Latest revision as of 23:11, 2 March 2021
A triple fault is an event on x86 series microprocessors, where a fault occurs when the CPU is attempting enter the fault handler for a fault occurring during the course of some other fault handler. The microcode on the x86 series machines responds by re-starting the CPU, since this should 'never happen'.
Triple faults were the solution to a problem with the Intel 80286, which was that once they were in protected mode, there was no way to return to real mode. Causing a triple fault turned out the be the answer. This issue was fixed in the successor Intel 80386.
