48 lines
1.5 KiB
HTML
48 lines
1.5 KiB
HTML
<html><!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
|
|
<html>
|
|
|
|
<head>
|
|
<title>80386 Programmer's Reference Manual -- Opcode CMC</title>
|
|
</head>
|
|
|
|
<body>
|
|
<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>
|
|
<b>prev:</b><a href="CLTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CLTS.HTM"> CLTS Clear Task-Switched Flag in CR0</a><br>
|
|
<b>next:</b><a href="CMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMP.HTM"> CMP Compare Two Operands</a>
|
|
<p>
|
|
<hr>
|
|
<p>
|
|
<h1>CMC -- Complement Carry Flag</h1>
|
|
<pre>
|
|
|
|
|
|
|
|
Opcode Instruction Clocks Description
|
|
|
|
F5 CMC 2 Complement carry flag
|
|
</pre>
|
|
<h2>Operation</h2>
|
|
<pre>
|
|
|
|
|
|
|
|
CF := NOT CF;
|
|
</pre>
|
|
<h2>Description</h2>
|
|
CMC reverses the setting of the carry flag. No other flags are affected.
|
|
<h2>Flags Affected</h2>
|
|
CF as described above
|
|
<h2>Protected Mode Exceptions</h2>
|
|
None
|
|
<h2>Real Address Mode Exceptions</h2>
|
|
None
|
|
<h2>Virtual 8086 Mode Exceptions</h2>
|
|
None
|
|
<p>
|
|
<hr>
|
|
<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>
|
|
<b>prev:</b><a href="CLTS.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CLTS.HTM"> CLTS Clear Task-Switched Flag in CR0</a><br>
|
|
<b>next:</b><a href="CMP.HTM" tppabs="http://webster.cs.ucr.edu/Page_TechDocs/Doc386/CMP.HTM"> CMP Compare Two Operands</a>
|
|
</body>
|
|
|