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.
74 lines
3.5 KiB
HTML
74 lines
3.5 KiB
HTML
15 years ago
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>Z8000-Addressing - Using as</title>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html">
|
||
|
|
<meta name="description" content="Using as">
|
||
|
|
<meta name="generator" content="makeinfo 4.7">
|
||
|
|
<link title="Top" rel="start" href="index.html#Top">
|
||
|
|
<link rel="up" href="Z8000-Syntax.html#Z8000-Syntax" title="Z8000 Syntax">
|
||
|
|
<link rel="prev" href="Z8000_002dRegs.html#Z8000_002dRegs" title="Z8000-Regs">
|
||
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
||
|
|
<!--
|
||
|
|
This file documents the GNU Assembler "as".
|
||
|
|
|
||
|
|
Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
|
||
|
|
2006, 2007 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 1.1
|
||
|
|
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''.
|
||
|
|
|
||
|
|
man end-->
|
||
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
||
|
|
<style type="text/css"><!--
|
||
|
|
pre.display { font-family:inherit }
|
||
|
|
pre.format { font-family:inherit }
|
||
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
||
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
||
|
|
pre.smallexample { font-size:smaller }
|
||
|
|
pre.smalllisp { font-size:smaller }
|
||
|
|
span.sc { font-variant:small-caps }
|
||
|
|
span.roman { font-family: serif; font-weight: normal; }
|
||
|
|
--></style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="node">
|
||
|
|
<p>
|
||
|
|
<a name="Z8000_002dAddressing"></a>Previous: <a rel="previous" accesskey="p" href="Z8000_002dRegs.html#Z8000_002dRegs">Z8000-Regs</a>,
|
||
|
|
Up: <a rel="up" accesskey="u" href="Z8000-Syntax.html#Z8000-Syntax">Z8000 Syntax</a>
|
||
|
|
<hr><br>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<h5 class="subsubsection">9.33.2.3 Addressing Modes</h5>
|
||
|
|
|
||
|
|
<p><a name="index-addressing-modes_002c-Z8000-1713"></a><a name="index-Z800-addressing-modes-1714"></a>as understands the following addressing modes for the Z8000:
|
||
|
|
|
||
|
|
<dl>
|
||
|
|
<dt><code>rl</code><var>n</var><dt><code>rh</code><var>n</var><dt><code>r</code><var>n</var><dt><code>rr</code><var>n</var><dt><code>rq</code><var>n</var><dd>Register direct: 8bit, 16bit, 32bit, and 64bit registers.
|
||
|
|
|
||
|
|
<br><dt><code>@r</code><var>n</var><dt><code>@rr</code><var>n</var><dd>Indirect register: @rr<var>n</var> in segmented mode, @r<var>n</var> in unsegmented
|
||
|
|
mode.
|
||
|
|
|
||
|
|
<br><dt><var>addr</var><dd>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.
|
||
|
|
|
||
|
|
<br><dt><code>address(r</code><var>n</var><code>)</code><dd>Indexed: the 16 or 24 bit address is added to the 16 bit register to produce
|
||
|
|
the final address in memory of the operand.
|
||
|
|
|
||
|
|
<br><dt><code>r</code><var>n</var><code>(#</code><var>imm</var><code>)</code><dt><code>rr</code><var>n</var><code>(#</code><var>imm</var><code>)</code><dd>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.
|
||
|
|
|
||
|
|
<br><dt><code>r</code><var>n</var><code>(r</code><var>m</var><code>)</code><dt><code>rr</code><var>n</var><code>(r</code><var>m</var><code>)</code><dd>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.
|
||
|
|
|
||
|
|
<br><dt><code>#</code><var>xx</var><dd>Immediate data <var>xx</var>.
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
</body></html>
|
||
|
|
|