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Half-carry flag

A half-carry flag (also known as an auxiliary flag) is a condition flag bit in the status register of many CPU families, such as the Intel 8080, Zilog Z80, the x86, and the Atmel AVR series, among others. It indicates when a carry or borrow has been generated out of the least significant four bits of the accumulator register following the execution of an…

The Auxiliary Carry Flag in x86, Usage & Overview

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The Auxiliary Carry Flag in x86

FLAGS registerPositionArithmetic
3 related topics

Usage

Binary arithmeticCarry bit
2 related topics

Overview

Status registerCPUIntel 8080Zilog Z80X86
10 related topics

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Usage

The Auxiliary Carry Flag in x86

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Half-carry flag

Nodes19
Edges18
Triples9
Avg. degree1.89
Density0.105263
Components1

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Half-carry flag

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related to Usage · 9
Half-carry flag → BCD, CPU, CPUs, For, However, Likewise, Normally, Since, This

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Important terminology

carry bcd flag arithmetic adding register cpu digit result decimal auxiliary bit intel addition produces nibble value non-decimal borrow significant

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SubjectPredicateObjectConfidenceSrc
Half-carry flagrelated to UsageNormally0.60section
Half-carry flagrelated to UsageCPUs0.60section
Half-carry flagrelated to UsageFor0.60section
Half-carry flagrelated to UsageHowever0.60section
Half-carry flagrelated to UsageBCD0.60section
Half-carry flagrelated to UsageSince0.60section
Half-carry flagrelated to UsageLikewise0.60section
Half-carry flagrelated to UsageThis0.60section
Half-carry flagrelated to UsageCPU0.60section

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