📄 h8-500-regs.html

📁 gcc手册

💻 HTML

字号:

<html lang="en">

<head>

<title>Using as</title>

<meta http-equiv="Content-Type" content="text/html">

<meta name="description" content="Using as">

<meta name="generator" content="makeinfo 4.3">

<link href="http://www.gnu.org/software/texinfo/" rel="generator-home">

</head>

<body>

<div class="node">

<p>

Node:<a name="H8%2f500-Regs">H8/500-Regs</a>,

Next:<a rel="next" accesskey="n" href="H8-500-Addressing.html#H8%2f500-Addressing">H8/500-Addressing</a>,

Previous:<a rel="previous" accesskey="p" href="H8-500-Chars.html#H8%2f500-Chars">H8/500-Chars</a>,

Up:<a rel="up" accesskey="u" href="H8-500-Syntax.html#H8%2f500%20Syntax">H8/500 Syntax</a>

<hr><br>

</div>



<h5 class="subsection">Register Names</h5>



   <p>You can use the predefined symbols <code>r0</code>, <code>r1</code>, <code>r2</code>,

<code>r3</code>, <code>r4</code>, <code>r5</code>, <code>r6</code>, and <code>r7</code> to refer to

the H8/500 registers.



   <p>The H8/500 also has these control registers:



     <dl>

<dt><code>cp</code>

     <dd>code pointer



     <br><dt><code>dp</code>

     <dd>data pointer



     <br><dt><code>bp</code>

     <dd>base pointer



     <br><dt><code>tp</code>

     <dd>stack top pointer



     <br><dt><code>ep</code>

     <dd>extra pointer



     <br><dt><code>sr</code>

     <dd>status register



     <br><dt><code>ccr</code>

     <dd>condition code register

</dl>



   <p>All registers are 16 bits long.  To represent 32 bit numbers, use two

adjacent registers; for distant memory addresses, use one of the segment

pointers (<code>cp</code> for the program counter; <code>dp</code> for

<code>r0</code>-<code>r3</code>; <code>ep</code> for <code>r4</code> and <code>r5</code>; and

<code>tp</code> for <code>r6</code> and <code>r7</code>.



   </body></html>

⌨️ 快捷键说明

复制代码 Ctrl + C

搜索代码 Ctrl + F

全屏模式 F11

切换主题 Ctrl + Shift + D

显示快捷键 ?

增大字号 Ctrl + =

减小字号 Ctrl + -