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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
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2 <HTML
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3 ><HEAD
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4 ><TITLE
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5 >Source Format</TITLE
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6 ><META
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7 NAME="GENERATOR"
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8 CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
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9 REL="HOME"
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10 TITLE="LW Tool Chain"
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11 HREF="index.html"><LINK
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12 REL="UP"
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13 TITLE="LWASM"
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14 HREF="c43.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="Dialects"
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17 HREF="x161.html"><LINK
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18 REL="NEXT"
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19 TITLE="Symbols"
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20 HREF="x177.html"></HEAD
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21 ><BODY
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22 CLASS="SECTION"
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23 BGCOLOR="#FFFFFF"
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24 TEXT="#000000"
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25 LINK="#0000FF"
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26 VLINK="#840084"
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27 ALINK="#0000FF"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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31 SUMMARY="Header navigation table"
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32 WIDTH="100%"
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33 BORDER="0"
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34 CELLPADDING="0"
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35 CELLSPACING="0"
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36 ><TR
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37 ><TH
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38 COLSPAN="3"
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39 ALIGN="center"
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40 >LW Tool Chain</TH
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41 ></TR
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42 ><TR
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43 ><TD
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44 WIDTH="10%"
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45 ALIGN="left"
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46 VALIGN="bottom"
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47 ><A
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48 HREF="x161.html"
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49 ACCESSKEY="P"
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50 >Prev</A
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51 ></TD
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52 ><TD
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53 WIDTH="80%"
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54 ALIGN="center"
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55 VALIGN="bottom"
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56 >Chapter 3. LWASM</TD
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57 ><TD
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58 WIDTH="10%"
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59 ALIGN="right"
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60 VALIGN="bottom"
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61 ><A
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62 HREF="x177.html"
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63 ACCESSKEY="N"
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64 >Next</A
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65 ></TD
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66 ></TR
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67 ></TABLE
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68 ><HR
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69 ALIGN="LEFT"
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70 WIDTH="100%"></DIV
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71 ><DIV
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72 CLASS="SECTION"
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73 ><H1
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74 CLASS="SECTION"
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75 ><A
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76 NAME="AEN168"
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77 >3.3. Source Format</A
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78 ></H1
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79 ><P
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80 >LWASM accepts plain text files in a relatively free form. It can handle
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81 lines terminated with CR, LF, CRLF, or LFCR which means it should be able
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82 to assemble files on any platform on which it compiles.</P
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83 ><P
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84 >Each line may start with a symbol. If a symbol is present, there must not
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85 be any whitespace preceding it. It is legal for a line to contain nothing
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86 but a symbol.</P
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87 ><P
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88 >The op code is separated from the symbol by whitespace. If there is
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89 no symbol, there must be at least one white space character preceding it.
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90 If applicable, the operand follows separated by whitespace. Following the
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91 opcode and operand is an optional comment.</P
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92 ><P
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93 >A comment can also be introduced with a * or a ;. The comment character is
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94 optional for end of statement comments. However, if a symbol is the only
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95 thing present on the line other than the comment, the comment character is
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96 mandatory to prevent the assembler from interpreting the comment as an opcode.</P
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97 ><P
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98 >For compatibility with the output generated by some C preprocessors, LWASM
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99 will also ignore lines that begin with a #. This should not be used as a general
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100 comment character, however.</P
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101 ><P
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102 >The opcode is not treated case sensitively. Neither are register names in
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103 the operand fields. Symbols, however, are case sensitive.</P
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104 ><P
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105 > As of version 2.6, LWASM supports files with line numbers. If line
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106 numbers are present, the line must start with a digit. The line number
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107 itself must consist only of digits. The line number must then be followed
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108 by either the end of the line or exactly one white space character. After
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109 that white space character, the lines are interpreted exactly as above. </P
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110 ></DIV
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111 ><DIV
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112 CLASS="NAVFOOTER"
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113 ><HR
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114 ALIGN="LEFT"
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115 WIDTH="100%"><TABLE
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116 SUMMARY="Footer navigation table"
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117 WIDTH="100%"
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118 BORDER="0"
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119 CELLPADDING="0"
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120 CELLSPACING="0"
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121 ><TR
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122 ><TD
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123 WIDTH="33%"
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124 ALIGN="left"
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125 VALIGN="top"
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126 ><A
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127 HREF="x161.html"
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128 ACCESSKEY="P"
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129 >Prev</A
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130 ></TD
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131 ><TD
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132 WIDTH="34%"
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133 ALIGN="center"
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134 VALIGN="top"
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135 ><A
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136 HREF="index.html"
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137 ACCESSKEY="H"
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138 >Home</A
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139 ></TD
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140 ><TD
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141 WIDTH="33%"
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142 ALIGN="right"
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143 VALIGN="top"
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144 ><A
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145 HREF="x177.html"
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146 ACCESSKEY="N"
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147 >Next</A
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148 ></TD
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149 ></TR
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150 ><TR
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151 ><TD
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152 WIDTH="33%"
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153 ALIGN="left"
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154 VALIGN="top"
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155 >Dialects</TD
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156 ><TD
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157 WIDTH="34%"
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158 ALIGN="center"
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159 VALIGN="top"
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160 ><A
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161 HREF="c43.html"
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162 ACCESSKEY="U"
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163 >Up</A
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164 ></TD
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165 ><TD
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166 WIDTH="33%"
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167 ALIGN="right"
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168 VALIGN="top"
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169 >Symbols</TD
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170 ></TR
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171 ></TABLE
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172 ></DIV
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173 ></BODY
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174 ></HTML
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175 > |
