<html lang="en"> <head> <title>Z80-Chars - Using as</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Using as"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Z80-Syntax.html#Z80-Syntax" title="Z80 Syntax"> <link rel="next" href="Z80_002dRegs.html#Z80_002dRegs" title="Z80-Regs"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991-2015 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''. --> <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; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="Z80-Chars"></a> <a name="Z80_002dChars"></a> <p> Next: <a rel="next" accesskey="n" href="Z80_002dRegs.html#Z80_002dRegs">Z80-Regs</a>, Up: <a rel="up" accesskey="u" href="Z80-Syntax.html#Z80-Syntax">Z80 Syntax</a> <hr> </div> <h5 class="subsubsection">9.53.2.1 Special Characters</h5> <p><a name="index-line-comment-character_002c-Z80-2505"></a><a name="index-Z80-line-comment-character-2506"></a>The semicolon ‘<samp><span class="samp">;</span></samp>’ is the line comment character; <p>If a ‘<samp><span class="samp">#</span></samp>’ appears as the first character of a line then the whole line is treated as a comment, but in this case the line could also be a logical line number directive (see <a href="Comments.html#Comments">Comments</a>) or a preprocessor control command (see <a href="Preprocessing.html#Preprocessing">Preprocessing</a>). <p><a name="index-line-separator_002c-Z80-2507"></a><a name="index-statement-separator_002c-Z80-2508"></a><a name="index-Z80-line-separator-2509"></a>The Z80 assembler does not support a line separator character. <p><a name="index-location-counter_002c-Z80-2510"></a><a name="index-hexadecimal-prefix_002c-Z80-2511"></a><a name="index-Z80-_0024-2512"></a>The dollar sign ‘<samp><span class="samp">$</span></samp>’ can be used as a prefix for hexadecimal numbers and as a symbol denoting the current location counter. <p><a name="index-character-escapes_002c-Z80-2513"></a><a name="index-Z80_002c-_005c-2514"></a>A backslash ‘<samp><span class="samp">\</span></samp>’ is an ordinary character for the Z80 assembler. <p><a name="index-character-constant_002c-Z80-2515"></a><a name="index-single-quote_002c-Z80-2516"></a><a name="index-Z80-_0027-2517"></a>The single quote ‘<samp><span class="samp">'</span></samp>’ must be followed by a closing quote. If there is one character in between, it is a character constant, otherwise it is a string constant. </body></html>