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Halt and Catch Fire — latest news, discussion & facts — IJR

Halt and Catch Fire

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Halt and Catch Fire

several computer machine code instructions that cause a computer's CPU to halt

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About Halt and Catch Fire

In computer engineering, Halt and Catch Fire, known by the assembly language mnemonic HCF, is an idiom referring to a computer machine code instruction that causes the computer's central processing unit (CPU) to cease meaningful operation, typically requiring a restart of the computer. It originally referred to a fictitious instruction in IBM System/360 computers, making a joke about its numerous non-obvious instruction mnemonics.

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