You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
4.7 KiB
HTML
124 lines
4.7 KiB
HTML
4 years ago
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
|
|
<html>
|
||
|
|
<!-- This file documents the GNU Assembler "as".
|
||
|
|
|
||
|
|
Copyright (C) 1991-2019 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
Permission is granted to copy, distribute and/or modify this document
|
||
|
|
under the terms of the GNU Free Documentation License, Version 1.3
|
||
|
|
or any later version published by the Free Software Foundation;
|
||
|
|
with no Invariant Sections, with no Front-Cover Texts, and with no
|
||
|
|
Back-Cover Texts. A copy of the license is included in the
|
||
|
|
section entitled "GNU Free Documentation License".
|
||
|
|
-->
|
||
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
||
|
|
<head>
|
||
|
|
<title>Z8000-Addressing (Using as)</title>
|
||
|
|
|
||
|
|
<meta name="description" content="Z8000-Addressing (Using as)">
|
||
|
|
<meta name="keywords" content="Z8000-Addressing (Using as)">
|
||
|
|
<meta name="resource-type" content="document">
|
||
|
|
<meta name="distribution" content="global">
|
||
|
|
<meta name="Generator" content="makeinfo">
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<link href="index.html#Top" rel="start" title="Top">
|
||
|
|
<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
|
||
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
||
|
|
<link href="Z8000-Syntax.html#Z8000-Syntax" rel="up" title="Z8000 Syntax">
|
||
|
|
<link href="Z8000-Directives.html#Z8000-Directives" rel="next" title="Z8000 Directives">
|
||
|
|
<link href="Z8000_002dRegs.html#Z8000_002dRegs" rel="prev" title="Z8000-Regs">
|
||
|
|
<style type="text/css">
|
||
|
|
<!--
|
||
|
|
a.summary-letter {text-decoration: none}
|
||
|
|
blockquote.indentedblock {margin-right: 0em}
|
||
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
||
|
|
blockquote.smallquotation {font-size: smaller}
|
||
|
|
div.display {margin-left: 3.2em}
|
||
|
|
div.example {margin-left: 3.2em}
|
||
|
|
div.lisp {margin-left: 3.2em}
|
||
|
|
div.smalldisplay {margin-left: 3.2em}
|
||
|
|
div.smallexample {margin-left: 3.2em}
|
||
|
|
div.smalllisp {margin-left: 3.2em}
|
||
|
|
kbd {font-style: oblique}
|
||
|
|
pre.display {font-family: inherit}
|
||
|
|
pre.format {font-family: inherit}
|
||
|
|
pre.menu-comment {font-family: serif}
|
||
|
|
pre.menu-preformatted {font-family: serif}
|
||
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smallexample {font-size: smaller}
|
||
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smalllisp {font-size: smaller}
|
||
|
|
span.nolinebreak {white-space: nowrap}
|
||
|
|
span.roman {font-family: initial; font-weight: normal}
|
||
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
||
|
|
ul.no-bullet {list-style: none}
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body lang="en">
|
||
|
|
<a name="Z8000_002dAddressing"></a>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Previous: <a href="Z8000_002dRegs.html#Z8000_002dRegs" accesskey="p" rel="prev">Z8000-Regs</a>, Up: <a href="Z8000-Syntax.html#Z8000-Syntax" accesskey="u" rel="up">Z8000 Syntax</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
<a name="Addressing-Modes-4"></a>
|
||
|
|
<h4 class="subsubsection">9.56.2.3 Addressing Modes</h4>
|
||
|
|
|
||
|
|
<a name="index-addressing-modes_002c-Z8000"></a>
|
||
|
|
<a name="index-Z800-addressing-modes"></a>
|
||
|
|
<p>as understands the following addressing modes for the Z8000:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt><code>rl<var>n</var></code></dt>
|
||
|
|
<dt><code>rh<var>n</var></code></dt>
|
||
|
|
<dt><code>r<var>n</var></code></dt>
|
||
|
|
<dt><code>rr<var>n</var></code></dt>
|
||
|
|
<dt><code>rq<var>n</var></code></dt>
|
||
|
|
<dd><p>Register direct: 8bit, 16bit, 32bit, and 64bit registers.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>@r<var>n</var></code></dt>
|
||
|
|
<dt><code>@rr<var>n</var></code></dt>
|
||
|
|
<dd><p>Indirect register: @rr<var>n</var> in segmented mode, @r<var>n</var> in unsegmented
|
||
|
|
mode.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code><var>addr</var></code></dt>
|
||
|
|
<dd><p>Direct: the 16 bit or 24 bit address (depending on whether the assembler
|
||
|
|
is in segmented or unsegmented mode) of the operand is in the instruction.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>address(r<var>n</var>)</code></dt>
|
||
|
|
<dd><p>Indexed: the 16 or 24 bit address is added to the 16 bit register to produce
|
||
|
|
the final address in memory of the operand.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>r<var>n</var>(#<var>imm</var>)</code></dt>
|
||
|
|
<dt><code>rr<var>n</var>(#<var>imm</var>)</code></dt>
|
||
|
|
<dd><p>Base Address: the 16 or 24 bit register is added to the 16 bit sign
|
||
|
|
extended immediate displacement to produce the final address in memory
|
||
|
|
of the operand.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>r<var>n</var>(r<var>m</var>)</code></dt>
|
||
|
|
<dt><code>rr<var>n</var>(r<var>m</var>)</code></dt>
|
||
|
|
<dd><p>Base Index: the 16 or 24 bit register r<var>n</var> or rr<var>n</var> is added to
|
||
|
|
the sign extended 16 bit index register r<var>m</var> to produce the final
|
||
|
|
address in memory of the operand.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>#<var>xx</var></code></dt>
|
||
|
|
<dd><p>Immediate data <var>xx</var>.
|
||
|
|
</p></dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|