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  35
  36 <h2 class="chapter">1 What's New</h2>
  37
  38 <h3 class="heading">Version 1.4.5</h3>
  39
  40 <p><strong>Assembler</strong>
  41
  42      <ul>
  43 <li>Fixed bug that prevented local labels from being used as operand to <code>DB</code>, <code>DW</code>, <code>DD</code> directives.
  44
  45      <li>Fixed bug in processing of array of operands to <code>DB</code>, <code>DW</code>, <code>DD</code> directives (some high-level constructs were only reduced in first item).
  46
  47      <li>Negative immediate operand no longer gives truncation warning as long as it fits in signed byte (<code>DB</code>, immediate mode instructions) or word (<code>DW</code>).
  48
  49      <li>Added <code>BLT</code>, <code>BGE</code> as aliases for <code>BCC</code>, <code>BCS</code> (unsigned comparison).
  50
  51    </ul>
  52
  53    <p><strong>Linker</strong>
  54
  55      <ul>
  56 <li>Prints physical addresses of relocated public symbols when <code>--verbose</code>.
  57
  58    </ul>
  59
  60 <h3 class="heading">Version 1.4.4</h3>
  61
  62 <p><strong>Linker</strong>
  63
  64      <ul>
  65 <li>Fixed bug in RAM allocator.
  66
  67      <li>Prints statistics on RAM management (total, used, left) when <code>--verbose</code>.
  68
  69    </ul>
  70
  71 <h3 class="heading">Version 1.4.3</h3>
  72
  73 <p><strong>Assembler</strong>
  74
  75      <ul>
  76 <li>Support for anonymous unions.
  77
  78      <li>Fixed bug in result of <code>sizeof</code> operator when applied to an initialized structure variable.
  79
  80      <li>Returns error code so that i.e. Make stops after the first erroneous invocation.
  81
  82    </ul>
  83
  84    <p><strong>Linker</strong>
  85
  86      <ul>
  87 <li>Returns error code so that i.e. Make stops after the first erroneous invocation.
  88
  89    </ul>
  90
  91 <h3 class="heading">Version 1.4.2</h3>
  92
  93 <p><strong>Assembler</strong>
  94
  95      <ul>
  96 <li>Symbols can be indexed statically, C-style; see section 3.2.16, &ldquo;Indexing symbols statically&rdquo;.
  97
  98      <li><code>sizeof</code> operator now works correctly when applied to an array.
  99
 100      <li>Fixed bug that lead to dysfunctional symbol table when using `=' equates.
 101
 102    </ul>
 103
 104    <p><strong>Linker</strong>
 105
 106      <ul>
 107 <li>Fixed bug in RAM allocator.
 108
 109      <li>Fixed line number bug in error messages.
 110
 111      <li>Removed duplicate error message (unresolved symbols).
 112
 113    </ul>
 114
 115 <h3 class="heading">Version 1.4.1</h3>
 116
 117 <p>This is a bugfix release.
 118
 119    <p><strong>Assembler</strong>
 120
 121      <ul>
 122 <li>Fixed bug in processing of declaration of array of user-defined type (!).
 123
 124      <li>Fixed bug that lead to no error message when declaring an uninitialized variable of non-existing user-defined type.
 125
 126    </ul>
 127
 128    <p><strong>Linker</strong>
 129
 130      <ul>
 131 <li>Fixed imperfection in allocation of alignment-constrained data.
 132
 133      <li>Fixed memory leak in RAM allocator.
 134
 135    </ul>
 136
 137 <h3 class="heading">Version 1.4.0</h3>
 138
 139 <p><strong>Assembler</strong>
 140
 141      <ul>
 142 <li>Added <code>--debug</code> switch (short form: <code>-g</code>). When this switch is given, the assembler will retain file and line information in the object file, which the linker can use to produce more descriptive link-time warning and error messages.
 143
 144      <li><code>LABEL</code> directive can take a specific address as argument, so that &ldquo;pointers&rdquo; can be made to any part of memory (i.e. you can address memory location <code>$200</code> as a structure (or array of structures), without having to explicitly define storage for it).
 145
 146      <li>Constraints can be communicated to the linker on how contents of data segments should be mapped to RAM; see section 3.2.19, &ldquo;Controlling data mapping&rdquo;.
 147
 148      <li>PUBLIC modifier can be specified directly when defining a variable.
 149
 150      <li>Fixed a bug in code generation of exported string constants.
 151
 152    </ul>
 153
 154    <p><strong>Linker</strong>
 155
 156      <ul>
 157 <li>Uses the information generated from the assembler <code>--debug</code> switch to produce descriptive warning and error messages.
 158
 159      <li>Rewrote data segment mapping function to take zeropage and alignment constraints into account.
 160
 161      <li>Improved code relocation; as a result, the current PC ($) can be used freely in any expression, and the <code>origin</code> argument for the <code>pad</code> command works.
 162
 163      <li>Fixed a linker script parsing bug.
 164
 165    </ul>
 166
 167 <h3 class="heading">Version 1.3.5</h3>
 168
 169 <p><strong>Assembler</strong>
 170
 171      <ul>
 172
 173      <li>Added ability to declare storage for array of user-defined types, C-style (works for native types too).
 174
 175      <li>Added ability to specify the type of data that a label addresses.
 176
 177      <li>Fixed bug in code generation of storage of user-defined types.
 178
 179      <li>Fixed some error detection and parsing woes.
 180
 181      <li>Added <code>DEFINE</code> directive (same semantics as <code>EQU</code>, but potentially more compact).
 182
 183    </ul>
 184
 185    <p><strong>Linker</strong>
 186
 187      <ul>
 188 <li>Fixed a bad code relocation bug.
 189
 190      <li>Implemented bank operator (<code>^</code>).
 191
 192      <li><code>--verbose</code> switch now gives helpful info on what the linker is doing.
 193
 194    </ul>
 195
 196 <h3 class="heading">Version 1.3.0</h3>
 197
 198      <ul>
 199 <li>Added support for user-defined records (<code>RECORD</code> directive, <code>MASK</code> operator).
 200
 201      <li>Added <code>WHILE</code> directive.
 202
 203      <li>Implemented <code>ELIF</code> directive.
 204
 205      <li>Improved <code>--define</code> switch: A value can now be assigned to the identifier (i.e. <code>--define a=10</code>).
 206
 207      <li><code>SIZEOF</code> operator now works on variable identifiers too.
 208
 209      <li>Fixed bug that prevented single-character identifiers from working.
 210
 211      <li>Added <code>--no-warn</code> switch to suppress assembler warnings.
 212
 213      <li>Early support for <code>--verbose</code> switch.
 214
 215 </ul>
 216
 217 <h3 class="heading">Version 1.2.0</h3>
 218
 219      <ul>
 220 <li>Added support for forward/backward branches (<code>-</code>, <code>--</code>, <code>+</code>, <code>++</code>, and so on, up to eight levels (<code>++++++++</code>)).
 221
 222      <li>Fixed bug that caused the assembler to run out of file handles when including a large number of files.
 223
 224      <li>Fixed bug that caused <code>.db &lt;a, &gt;b</code> and other lines with <code>&lt; &gt;</code> to be parsed erroneously.
 225
 226 </ul>
 227
 228 <h3 class="heading">Version 1.1.0</h3>
 229
 230      <ul>
 231 <li>Full support for user-defined types: Structures, unions and enums.
 232
 233      <li>Better separation of symbol types. In the previous versions, <em>everything</em> was a label. The assembler now distinguishes properly between labels, procedures, variables, constants and user-defined types.
 234
 235      <li>Support for anonymous macros (<code>rept</code> directive).
 236
 237      <li>Crash-bug fixes (<code>if</code> directive, <code>incbin</code> directive).
 238
 239      <li>Preliminary support for <code>--define=</code><var>IDENT</var> assembler switch (can be used in <code>ifdef</code> and <code>ifndef</code> directives).
 240
 241      <li>Added <code>message</code> directive.
 242
 243      <li>Improved literal expression folding. <var>"hello " + 123</var> will now be folded to <var>"hello 123"</var>.
 244
 245      <li>Added assembler switch <code>--swap-parens</code>, which swaps the operators used for indirection from [ ] to ( ).
 246
 247      <li>Syntax of <code>extrn</code> directive changed slightly: Must now specify the symbol type.
 248
 249      <li>Relaxed syntax of <code>db</code>, <code>dsb</code> and similar directives. If no expression is given as argument, a single item is allocated.
 250
 251 </ul>
 252
 253    </body></html>
 254