125 lines
4.7 KiB
HTML
125 lines
4.7 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2016 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using as: Z8000-Addressing</title>
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<meta name="description" content="Using as: Z8000-Addressing">
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<meta name="keywords" content="Using as: Z8000-Addressing">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Z8000-Syntax.html#Z8000-Syntax" rel="up" title="Z8000 Syntax">
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<link href="Z8000-Directives.html#Z8000-Directives" rel="next" title="Z8000 Directives">
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<link href="Z8000_002dRegs.html#Z8000_002dRegs" rel="prev" title="Z8000-Regs">
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<style type="text/css">
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Z8000_002dAddressing"></a>
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<div class="header">
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<p>
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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>
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</div>
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<hr>
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<a name="Addressing-Modes-5"></a>
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<h4 class="subsubsection">9.54.2.3 Addressing Modes</h4>
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<a name="index-addressing-modes_002c-Z8000"></a>
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<a name="index-Z800-addressing-modes"></a>
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<p>as understands the following addressing modes for the Z8000:
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</p>
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<dl compact="compact">
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<dt><code>rl<var>n</var></code></dt>
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<dt><code>rh<var>n</var></code></dt>
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<dt><code>r<var>n</var></code></dt>
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<dt><code>rr<var>n</var></code></dt>
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<dt><code>rq<var>n</var></code></dt>
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<dd><p>Register direct: 8bit, 16bit, 32bit, and 64bit registers.
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</p>
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</dd>
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<dt><code>@r<var>n</var></code></dt>
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<dt><code>@rr<var>n</var></code></dt>
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<dd><p>Indirect register: @rr<var>n</var> in segmented mode, @r<var>n</var> in unsegmented
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mode.
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</p>
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</dd>
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<dt><code><var>addr</var></code></dt>
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<dd><p>Direct: the 16 bit or 24 bit address (depending on whether the assembler
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is in segmented or unsegmented mode) of the operand is in the instruction.
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</p>
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</dd>
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<dt><code>address(r<var>n</var>)</code></dt>
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<dd><p>Indexed: the 16 or 24 bit address is added to the 16 bit register to produce
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the final address in memory of the operand.
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</p>
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</dd>
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<dt><code>r<var>n</var>(#<var>imm</var>)</code></dt>
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<dt><code>rr<var>n</var>(#<var>imm</var>)</code></dt>
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<dd><p>Base Address: the 16 or 24 bit register is added to the 16 bit sign
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extended immediate displacement to produce the final address in memory
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of the operand.
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</p>
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</dd>
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<dt><code>r<var>n</var>(r<var>m</var>)</code></dt>
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<dt><code>rr<var>n</var>(r<var>m</var>)</code></dt>
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<dd><p>Base Index: the 16 or 24 bit register r<var>n</var> or rr<var>n</var> is added to
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the sign extended 16 bit index register r<var>m</var> to produce the final
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address in memory of the operand.
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</p>
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</dd>
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<dt><code>#<var>xx</var></code></dt>
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<dd><p>Immediate data <var>xx</var>.
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</p></dd>
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</dl>
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</body>
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</html>
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