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| <li class="toctree-l3 current"><a class="current reference internal" href="#"><code class="docutils literal notranslate"><span class="pre">bas</span></code> Bas BASIC Interpreter</a><ul> |
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| |
| <section id="bas-bas-basic-interpreter"> |
| <h1><code class="docutils literal notranslate"><span class="pre">bas</span></code> Bas BASIC Interpreter<a class="headerlink" href="#bas-bas-basic-interpreter" title="Permalink to this heading"></a></h1> |
| <section id="introduction"> |
| <h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this heading"></a></h2> |
| <p>Bas is an interpreter for the classic dialect of the programming language BASIC. |
| It is pretty compatible to typical BASIC interpreters of the 1980s, unlike some |
| other UNIX BASIC interpreters, that implement a different syntax, breaking |
| compatibility to existing programs. Bas offers many ANSI BASIC statements for |
| structured programming, such as procedures, local variables and various loop |
| types. Further there are matrix operations, automatic LIST indentation and many |
| statements and functions found in specific classic dialects. Line numbers are |
| not required.</p> |
| <p>The interpreter tokenises the source and resolves references to variables and |
| jump targets before running the program. This compilation pass increases |
| efficiency and catches syntax errors, type errors and references to variables |
| that are never initialised. Bas is written in ANSI C for UNIX systems.</p> |
| </section> |
| <section id="license"> |
| <h2>License<a class="headerlink" href="#license" title="Permalink to this heading"></a></h2> |
| <p>BAS 2.4 is released as part of NuttX under the standard 3-clause BSD license use |
| by all components of NuttX. This is not incompatible with the original BAS 2.4 |
| licensing</p> |
| <p>Copyright (c) 1999-2014 Michael Haardt</p> |
| <p>Permission is hereby granted, free of charge, to any person obtaining a copy of |
| this software and associated documentation files (the “Software”), to deal in |
| the Software without restriction, including without limitation the rights to |
| use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
| the Software, and to permit persons to whom the Software is furnished to do so, |
| subject to the following conditions:</p> |
| <p>The above copyright notice and this permission notice shall be included in all |
| copies or substantial portions of the Software.</p> |
| <p>THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS |
| FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
| COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</p> |
| </section> |
| <section id="bas-2-4-release-notes"> |
| <h2>Bas 2.4 Release Notes<a class="headerlink" href="#bas-2-4-release-notes" title="Permalink to this heading"></a></h2> |
| <p>Changes compared to version <code class="docutils literal notranslate"><span class="pre">2.3</span></code></p> |
| <ul class="simple"> |
| <li><p>Matrix inversion on integer arrays with option base 1 fixed.</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">PRINT</span> <span class="pre">USING</span></code> behaviour for <code class="docutils literal notranslate"><span class="pre">!</span></code> fixed.</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">PRINT</span></code>, separator should advance to the next zone, even if the current |
| position is at the start of a zone.</p></li> |
| <li><p>Added <code class="docutils literal notranslate"><span class="pre">ip()</span></code>, <code class="docutils literal notranslate"><span class="pre">frac()</span></code>, <code class="docutils literal notranslate"><span class="pre">fp()</span></code>, <code class="docutils literal notranslate"><span class="pre">log10()</span></code>, <code class="docutils literal notranslate"><span class="pre">log2()</span></code>, <code class="docutils literal notranslate"><span class="pre">min()</span></code> and <code class="docutils literal notranslate"><span class="pre">max()</span></code>.</p></li> |
| <li><p>Fixed <code class="docutils literal notranslate"><span class="pre">NEXT</span></code> checking the variable case sensitive.</p></li> |
| <li><p>Use <code class="docutils literal notranslate"><span class="pre">terminfo</span></code> capability cr to make use of its padding.</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">LET</span></code> segmentation fault fixed.</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">PRINT</span></code> now uses print items.</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">-r</span></code> for restricted operation.</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">MAT</span> <span class="pre">INPUT</span></code> does not drop excess arguments, but uses them for the next row.</p></li> |
| <li><p>License changed to MIT.</p></li> |
| </ul> |
| </section> |
| </section> |
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