43 lines
1.8 KiB
HTML
43 lines
1.8 KiB
HTML
<html><!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
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<html>
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<head>
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<title>80386 Programmer's Reference Manual -- Opcode HLT</title>
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</head>
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<body>
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<b>up:</b> <a href="C17.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/C17.HTM">Chapter 17 -- 80386 Instruction Set</a><br>
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<b>prev:</b><a href="ENTER.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ENTER.HTM"> ENTER Make Stack Frame for Procedure Parameters</a><br>
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<b>next:</b><a href="IDIV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IDIV.HTM"> IDIV Signed Divide</a>
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<p>
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<hr>
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<p>
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<h1>HLT -- Halt</h1>
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<pre>
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Opcode Instruction Clocks Description
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F4 HLT 5 Halt
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</pre>
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<h2>Operation</h2>
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Enter Halt state;
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<h2>Description</h2>
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HALT stops instruction execution and places the 80386 in a HALT state. An enabled interrupt, NMI, or a reset will resume execution. If an interrupt (including NMI) is used to resume execution after HLT, the saved CS:IP (or CS:EIP) value points to the instruction following HLT.
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<h2>Flags Affected</h2>
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None
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<h2>Protected Mode Exceptions</h2>
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HLT is a privileged instruction; #GP(0) if the current privilege level is not 0
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<h2>Real Address Mode Exceptions</h2>
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None
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<h2>Virtual 8086 Mode Exceptions</h2>
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#GP(0); HLT is a privileged instruction
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<p>
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<hr>
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<p><b>up:</b> <a href="C17.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/C17.HTM">Chapter 17 -- 80386 Instruction Set</a><br>
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<b>prev:</b><a href="ENTER.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/ENTER.HTM"> ENTER Make Stack Frame for Procedure Parameters</a><br>
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<b>next:</b><a href="IDIV.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/IDIV.HTM"> IDIV Signed Divide</a>
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</body>
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