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<title>Fifth - virtual machine, operating system, programming language</title>
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</head>
<body>
-<div id="content" class="container">
-<div class="row"><div class="col-md-9"><h1 class="title">Fifth - virtual machine, operating system, programming language</h1>
+<div id="content" class="content">
+<h1 class="title">Fifth - virtual machine, operating system, programming language</h1>
+<div id="table-of-contents" role="doc-toc">
+<h2>Table of Contents</h2>
+<div id="text-table-of-contents" role="doc-toc">
+<ul>
+<li><a href="#orgdd8d5a0">1. General</a>
+<ul>
+<li><a href="#org11b4b95">1.1. Source code</a></li>
+</ul>
+</li>
+<li><a href="#org0a3946b">2. !Project deprecated!</a></li>
+<li><a href="#org74c9861">3. Introduction</a>
+<ul>
+<li><a href="#orge8b459e">3.1. Screenshots</a></li>
+</ul>
+</li>
+<li><a href="#orga9dfaee">4. Installation</a></li>
+<li><a href="#orgefa2f79">5. Fifth distribution directory tree description</a></li>
+<li><a href="#org751040b">6. Requirements</a>
+<ul>
+<li><a href="#org32f0917">6.1. Software</a></li>
+<li><a href="#orgd6ecfe1">6.2. Hardware</a></li>
+</ul>
+</li>
+<li><a href="#orgeb3cbc2">7. Numbers representation within Fifth</a></li>
+<li><a href="#orga8a8f37">8. Disk file map, and it's data structures</a>
+<ul>
+<li><a href="#org4eb67fc">8.1. Disk allocation</a></li>
+<li><a href="#org5fcae51">8.2. FAT entry format:</a></li>
+<li><a href="#org811dc5b">8.3. File entry format</a></li>
+</ul>
+</li>
+<li><a href="#orga49dca9">9. Core architecture</a>
+<ul>
+<li><a href="#org75e80d5">9.1. Dictionary entry format</a></li>
+<li><a href="#org12381ef">9.2. Possible module types</a></li>
+<li><a href="#org33be039">9.3. Memory map</a></li>
+</ul>
+</li>
+<li><a href="#org81fd544">10. Dynamically loadable modules</a>
+<ul>
+<li><a href="#org79d1c84">10.1. Keyboard driver</a></li>
+<li><a href="#org99b4378">10.2. Mouse driver</a></li>
+<li><a href="#org0aa9e1f">10.3. 2D graphic library</a></li>
+<li><a href="#orgff6cdef">10.4. Trigonometry functions</a>
+<ul>
+<li><a href="#org868f7c6">10.4.1. sin ( a – result )</a></li>
+<li><a href="#orgc3f161e">10.4.2. cos ( a – result )</a></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
-<div id="outline-container-sec-1" class="outline-2">
-<h2 id="sec-1"><span class="section-number-2">1</span> General</h2>
+<div id="outline-container-orgdd8d5a0" class="outline-2">
+<h2 id="orgdd8d5a0"><span class="section-number-2">1.</span> General</h2>
<div class="outline-text-2" id="text-1">
<ul class="org-ul">
<li>This program is free software: released under Creative Commons Zero
-(CC0) license
-</li>
+(CC0) license</li>
<li>Program author:
<ul class="org-ul">
-<li>Svjatoslav Agejenko
-</li>
-<li>Homepage: <a href="https://svjatoslav.eu">https://svjatoslav.eu</a>
-</li>
-<li>Email: <a href="mailto://svjatoslav@svjatoslav.eu">mailto://svjatoslav@svjatoslav.eu</a>
-</li>
-</ul>
-</li>
+<li>Svjatoslav Agejenko</li>
+<li>Homepage: <a href="https://svjatoslav.eu">https://svjatoslav.eu</a></li>
+<li>Email: <a href="mailto://svjatoslav@svjatoslav.eu">mailto://svjatoslav@svjatoslav.eu</a></li>
+</ul></li>
-<li><a href="https://www.svjatoslav.eu/projects/">Other software projects hosted at svjatoslav.eu</a>
-</li>
+<li><a href="https://www.svjatoslav.eu/projects/">Other software projects hosted at svjatoslav.eu</a></li>
</ul>
</div>
-<div id="outline-container-sec-1-1" class="outline-3">
-<h3 id="sec-1-1"><span class="section-number-3">1.1</span> Source code</h3>
+
+<div id="outline-container-org11b4b95" class="outline-3">
+<h3 id="org11b4b95"><span class="section-number-3">1.1.</span> Source code</h3>
<div class="outline-text-3" id="text-1-1">
<ul class="org-ul">
-<li><a href="https://www2.svjatoslav.eu/gitweb/?p=fifth.git;a=snapshot;h=HEAD;sf=tgz">Download latest snapshot in TAR GZ format</a>
-</li>
+<li><a href="https://www2.svjatoslav.eu/gitweb/?p=fifth.git;a=snapshot;h=HEAD;sf=tgz">Download latest snapshot in TAR GZ format</a></li>
-<li><a href="https://www2.svjatoslav.eu/gitweb/?p=fifth.git;a=summary">Browse Git repository online</a>
-</li>
+<li><a href="https://www2.svjatoslav.eu/gitweb/?p=fifth.git;a=summary">Browse Git repository online</a></li>
-<li>Clone Git repository using command:
+<li><p>
+Clone Git repository using command:
+</p>
<pre class="example">
git clone https://www2.svjatoslav.eu/git/fifth.git
-
-</pre>
-</li>
+</pre></li>
</ul>
</div>
</div>
</div>
-<div id="outline-container-sec-2" class="outline-2">
-<h2 id="sec-2"><span class="section-number-2">2</span> !Project deprecated!</h2>
+<div id="outline-container-org0a3946b" class="outline-2">
+<h2 id="org0a3946b"><span class="section-number-2">2.</span> !Project deprecated!</h2>
<div class="outline-text-2" id="text-2">
<p>
Current implementation does not support object oriented
</p>
</div>
</div>
-<div id="outline-container-sec-3" class="outline-2">
-<h2 id="sec-3"><span class="section-number-2">3</span> Introduction</h2>
+<div id="outline-container-org74c9861" class="outline-2">
+<h2 id="org74c9861"><span class="section-number-2">3.</span> Introduction</h2>
<div class="outline-text-2" id="text-3">
<p>
-Fifth is programming lanquage & operating system, running on <a href="#sec-10">virtual
-machine</a>, with custom instruction set. It is much like Charles Chunk
-Moore's Forth, it also uses stack architecture, and many commands are
-similar. Basically I got familiar with concepts of Forth, and being
-inspired created my own system.
+Fifth is a combination of:
</p>
-
<ul class="org-ul">
-<li><a href="5TH_ET.txt">Example Fifth source file - text editor</a>
-</li>
+<li><a href="language.html#ID-da7fff9b-0b67-4843-828a-52a404d7f401">Programming language</a> (inspired by Forth).</li>
+<li>Operating system.</li>
+<li><a href="virtual machine.html#ID-9b251eb9-aff6-4025-94bf-25e89e26d54a">Virtual machine</a> with custom instruction set.</li>
</ul>
</div>
-<div id="outline-container-sec-3-1" class="outline-3">
-<h3 id="sec-3-1"><span class="section-number-3">3.1</span> screenshots</h3>
+
+<div id="outline-container-orge8b459e" class="outline-3">
+<h3 id="orge8b459e"><span class="section-number-3">3.1.</span> Screenshots</h3>
<div class="outline-text-3" id="text-3-1">
-<ul class="org-ul">
-<li><img src="screenshots/start.png" class="img-responsive" alt="start.png">
-<ul class="org-ul">
-<li>Startup screen diplaying Fifth logo and full file list.
-</li>
-</ul>
-</li>
-<li><img src="screenshots/dictionary.png" class="img-responsive" alt="dictionary.png">
-<ul class="org-ul">
-<li>Sample words defined. Most of the words are commands that can be
-executed interactively from command line or from file. When
-executed they can be selectively compiled or interpreted.
-</li>
-</ul>
-</li>
+<div id="org76cf04c" class="figure">
+<p><img src="screenshots/start.png" alt="start.png" />
+</p>
+</div>
-<li><img src="screenshots/text editor.png" class="img-responsive" alt="text editor.png">
-<ul class="org-ul">
-<li>Built in text editor.
-</li>
-</ul>
-</li>
-</ul>
+<p>
+Startup screen diplaying Fifth logo and full file list.
+</p>
+
+
+<div id="org7579242" class="figure">
+<p><img src="screenshots/dictionary.png" alt="dictionary.png" />
+</p>
+</div>
+
+<p>
+Sample words defined. Most of the words are commands that can be
+executed interactively from the command line or from a file. When
+executed, they can be selectively compiled or interpreted.
+</p>
+
+
+
+<div id="org17f3e64" class="figure">
+<p><img src="screenshots/text editor.png" alt="text editor.png" />
+</p>
+</div>
+
+<p>
+Built in text editor.
+</p>
</div>
</div>
</div>
-<div id="outline-container-sec-4" class="outline-2">
-<h2 id="sec-4"><span class="section-number-2">4</span> Installation</h2>
+<div id="outline-container-orga9dfaee" class="outline-2">
+<h2 id="orga9dfaee"><span class="section-number-2">4.</span> Installation</h2>
<div class="outline-text-2" id="text-4">
<p>
Just unpack all files, witout altering original directory structure,
-somewhere in your hard disk. For example: C:\MISC\FIFTH\…. To run
-fifth you need minimally just 2 files. emulator itself ( EMULATOR.EXE
-or EMULATOR.COM ), and virtual disk file ( DISK.RAW ).
+somewhere in your hard disk. For example:
</p>
+<pre class="example">
+C:\MISC\FIFTH\
+</pre>
+
+
<p>
-Read more about <a href="#sec-5">Fifth distribution directory tree description</a>.
+To run fifth you need minimally just 2 files:
+</p>
+<dl class="org-dl">
+<dt>EMULATOR.COM</dt><dd>Virtual CPU emulator</dd>
+<dt>DISK.RAW</dt><dd>Virtual disk file</dd>
+</dl>
+
+<p>
+For more information, please refer to <a href="#orgefa2f79">Fifth distribution directory
+tree description</a>.
</p>
</div>
</div>
-<div id="outline-container-sec-5" class="outline-2">
-<h2 id="sec-5"><a id="ID-0759f3e0-28bb-4901-9e4f-09ef41732173" name="ID-0759f3e0-28bb-4901-9e4f-09ef41732173"></a><span class="section-number-2">5</span> Fifth distribution directory tree description</h2>
+<div id="outline-container-orgefa2f79" class="outline-2">
+<h2 id="orgefa2f79"><span class="section-number-2">5.</span> Fifth distribution directory tree description</h2>
<div class="outline-text-2" id="text-5">
<p>
After downloading and unpacking the ZIP file you shoud get directory
</p>
<p class="verse">
-[DOC] - Fifth documentation<br >
-  [commands] - documentation on Fifth built-in commands<br >
-  [modules] - documentation on additional commands, realized as loadable modules<br >
-  [shots] - Fifth screenshots<br >
-<br >
-[imageFile] - files contained within 'disk.raw', just an extracted form.<br >
-<br >
-[source] - source files<br >
-  [emulator] - emulator source<br >
-  [util] - utilites<br >
-<br >
-disk.raw - Virtual disk file, has filesystem inside.<br >
-emulator.com - main executable.<br >
+<b>DOC</b> - Fifth documentation<br />
+  <b>commands</b> - documentation on Fifth built-in commands<br />
+  <b>modules</b> - documentation on additional commands, realized as loadable modules<br />
+  <b>shots</b> - Fifth screenshots<br />
+<br />
+<b>imageFile</b> - files contained within 'disk.raw', just an extracted form.<br />
+<br />
+<b>source</b> - source files<br />
+  <b>emulator</b> - emulator source<br />
+  <b>util</b> - utilites<br />
+<br />
+<b>disk.raw</b> - Virtual disk file, has filesystem inside.<br />
+<b>emulator.com</b> - main executable.<br />
</p>
</div>
</div>
-<div id="outline-container-sec-6" class="outline-2">
-<h2 id="sec-6"><span class="section-number-2">6</span> Software/Hardware/Human requirements</h2>
+<div id="outline-container-org751040b" class="outline-2">
+<h2 id="org751040b"><span class="section-number-2">6.</span> Requirements</h2>
<div class="outline-text-2" id="text-6">
-</div><div id="outline-container-sec-6-1" class="outline-3">
-<h3 id="sec-6-1"><span class="section-number-3">6.1</span> Software</h3>
+</div>
+<div id="outline-container-org32f0917" class="outline-3">
+<h3 id="org32f0917"><span class="section-number-3">6.1.</span> Software</h3>
<div class="outline-text-3" id="text-6-1">
<ul class="org-ul">
-<li>MS-DOS 6.22, with HIMEM.SYS loaded.
-</li>
-<li>Mouse driver if you have a mouse.
-</li>
-<li>Does work only when CPU is in real mode.
-</li>
-<li>To recompile ASM sources I used FASM (Flat Assembler).
-</li>
-<li>I ran QBasic utilities on QB 4.5 .
-</li>
-<li>VESA support by BIOS, or external driver (UNIVBE).
-</li>
+<li>MS-DOS 6.22 with HIMEM.SYS loaded.</li>
+<li>Mouse driver (optional, if you have a mouse).</li>
+<li>CPU is initialized into <a href="https://en.wikipedia.org/wiki/Unreal_mode">Unreal Mode</a> during operation.</li>
+<li>To recompile ASM sources, you can use FASM (Flat Assembler).</li>
+<li>To run Quick Basic utilities, use Microsoft Quick Basic 4.5.</li>
+<li>VESA support through BIOS or external driver (UNIVBE).</li>
</ul>
</div>
</div>
-<div id="outline-container-sec-6-2" class="outline-3">
-<h3 id="sec-6-2"><span class="section-number-3">6.2</span> Hardware</h3>
+
+<div id="outline-container-orgd6ecfe1" class="outline-3">
+<h3 id="orgd6ecfe1"><span class="section-number-3">6.2.</span> Hardware</h3>
<div class="outline-text-3" id="text-6-2">
<ul class="org-ul">
-<li>Minimum CPU 386.
-</li>
-<li>64 KB free RAM below 640KB,
-</li>
-<li>2 MB of free XMS.
-</li>
-<li>VESA compatible video card.
-</li>
-</ul>
-</div>
-</div>
-<div id="outline-container-sec-6-3" class="outline-3">
-<h3 id="sec-6-3"><span class="section-number-3">6.3</span> Human</h3>
-<div class="outline-text-3" id="text-6-3">
-<ul class="org-ul">
-<li>Beginner level Forth knowledge is recommended.
-</li>
-<li>Lots of enthusiasm.
-</li>
+<li>A minimum of a i386 CPU.</li>
+<li>64 KB of free RAM below 640KB.</li>
+<li>2 MB of free <a href="https://en.wikipedia.org/wiki/Extended_memory">extended memory</a>.</li>
+<li>A VESA-compatible video card.</li>
</ul>
</div>
</div>
</div>
-<div id="outline-container-sec-7" class="outline-2">
-<h2 id="sec-7"><span class="section-number-2">7</span> Numbers representation within Fifth</h2>
+
+<div id="outline-container-orgeb3cbc2" class="outline-2">
+<h2 id="orgeb3cbc2"><span class="section-number-2">7.</span> Numbers representation within Fifth</h2>
<div class="outline-text-2" id="text-7">
<p>
-<a href="numbers.png">file:numbers.png</a>
+Because we are in full experimentation mode here (no regard for
+compatibility whatsoever), why not to try also alternative number
+representation ?
</p>
<p>
-Because I can define everything, starting from CPU, why not try also
-alternative and unique number representation ?
+Here alternative hexadecimal number representation format is devised:
+</p>
+
+
+<div id="org67795e4" class="figure">
+<p><a href="numbers.png"><img src="numbers.png" alt="numbers.png" /></a>
+</p>
+</div>
+
+<p>
+Essentially square is split into 4 triangles. Each triangle represents
+one bit.
</p>
<p>
-Fifth uses its hexdecimal number representation as primary. Numbers
-shape is formed by dividing a square into four parts. And manipulating
-their color (black or white).
+Fifth uses this hexadecimal format as primary throughout entire
+system.
+</p>
+
+<p>
+See also: <a href="https://en.wikipedia.org/wiki/Bibi-binary">Bibi-binary</a>.
</p>
</div>
</div>
-<div id="outline-container-sec-8" class="outline-2">
-<h2 id="sec-8"><span class="section-number-2">8</span> Disk file map, and it's data structures</h2>
+
+<div id="outline-container-orga8a8f37" class="outline-2">
+<h2 id="orga8a8f37"><span class="section-number-2">8.</span> Disk file map, and it's data structures</h2>
<div class="outline-text-2" id="text-8">
<p>
Core and high-level boot code is stored outside of the filesystem to
yet initialized.
</p>
</div>
-<div id="outline-container-sec-8-1" class="outline-3">
-<h3 id="sec-8-1"><span class="section-number-3">8.1</span> disk allocation</h3>
+<div id="outline-container-org4eb67fc" class="outline-3">
+<h3 id="org4eb67fc"><span class="section-number-3">8.1.</span> Disk allocation</h3>
<div class="outline-text-3" id="text-8-1">
-<table class="table table-striped table-bordered table-hover table-condensed">
+<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
-<col class="left">
+<col class="org-left" />
-<col class="left">
+<col class="org-left" />
-<col class="left">
+<col class="org-left" />
</colgroup>
<thead>
<tr>
-<th scope="col" class="text-left">offset</th>
-<th scope="col" class="text-left">length</th>
-<th scope="col" class="text-left">description</th>
+<th scope="col" class="org-left">offset</th>
+<th scope="col" class="org-left">length</th>
+<th scope="col" class="org-left">description</th>
</tr>
</thead>
<tbody>
<tr>
-<td class="text-left">0</td>
-<td class="text-left">~4 Kb</td>
-<td class="text-left">Fifth core</td>
+<td class="org-left">0</td>
+<td class="org-left">~4 Kb</td>
+<td class="org-left">Fifth core</td>
</tr>
<tr>
-<td class="text-left">4 Kb</td>
-<td class="text-left">~32Kb</td>
-<td class="text-left">high-level boot code</td>
+<td class="org-left">4 Kb</td>
+<td class="org-left">~32 Kb</td>
+<td class="org-left">high-level boot code</td>
</tr>
<tr>
-<td class="text-left">37 Kb</td>
-<td class="text-left">~65Kb</td>
-<td class="text-left">FAT</td>
+<td class="org-left">37 Kb</td>
+<td class="org-left">~65 Kb</td>
+<td class="org-left">FAT</td>
</tr>
<tr>
-<td class="text-left">101Kb</td>
-<td class="text-left">~16MB</td>
-<td class="text-left">filesystem data area</td>
+<td class="org-left">101 Kb</td>
+<td class="org-left">~16 MB</td>
+<td class="org-left">filesystem data area</td>
</tr>
</tbody>
</table>
</div>
</div>
-<div id="outline-container-sec-8-2" class="outline-3">
-<h3 id="sec-8-2"><span class="section-number-3">8.2</span> FAT entry format:</h3>
+<div id="outline-container-org5fcae51" class="outline-3">
+<h3 id="org5fcae51"><span class="section-number-3">8.2.</span> FAT entry format:</h3>
<div class="outline-text-3" id="text-8-2">
-<table class="table table-striped table-bordered table-hover table-condensed">
+<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
-<col class="right">
+<col class="org-right" />
-<col class="left">
+<col class="org-left" />
</colgroup>
<thead>
<tr>
-<th scope="col" class="text-right">code</th>
-<th scope="col" class="text-left">meaning</th>
+<th scope="col" class="org-right">code</th>
+<th scope="col" class="org-left">meaning</th>
</tr>
</thead>
<tbody>
<tr>
-<td class="text-right">-2</td>
-<td class="text-left">last sector</td>
+<td class="org-right">-2</td>
+<td class="org-left">last sector</td>
</tr>
<tr>
-<td class="text-right">-1</td>
-<td class="text-left">empty sector</td>
+<td class="org-right">-1</td>
+<td class="org-left">empty sector</td>
</tr>
<tr>
-<td class="text-right">0 --</td>
-<td class="text-left">.. pointer to next block</td>
+<td class="org-right">0 --</td>
+<td class="org-left">.. pointer to next block</td>
</tr>
</tbody>
</table>
</div>
</div>
-<div id="outline-container-sec-8-3" class="outline-3">
-<h3 id="sec-8-3"><span class="section-number-3">8.3</span> file entry format</h3>
+<div id="outline-container-org811dc5b" class="outline-3">
+<h3 id="org811dc5b"><span class="section-number-3">8.3.</span> File entry format</h3>
<div class="outline-text-3" id="text-8-3">
-<table class="table table-striped table-bordered table-hover table-condensed">
+<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
-<col class="right">
+<col class="org-right" />
-<col class="right">
+<col class="org-right" />
-<col class="left">
+<col class="org-left" />
</colgroup>
<thead>
<tr>
-<th scope="col" class="text-right">offset</th>
-<th scope="col" class="text-right">length</th>
-<th scope="col" class="text-left">description</th>
+<th scope="col" class="org-right">offset</th>
+<th scope="col" class="org-right">length</th>
+<th scope="col" class="org-left">description</th>
</tr>
</thead>
<tbody>
<tr>
-<td class="text-right">0</td>
-<td class="text-right">4</td>
-<td class="text-left">extension</td>
+<td class="org-right">0</td>
+<td class="org-right">4</td>
+<td class="org-left">extension</td>
</tr>
<tr>
-<td class="text-right">4</td>
-<td class="text-right">16</td>
-<td class="text-left">name</td>
+<td class="org-right">4</td>
+<td class="org-right">16</td>
+<td class="org-left">name</td>
</tr>
<tr>
-<td class="text-right">20</td>
-<td class="text-right">4</td>
-<td class="text-left">entry point</td>
+<td class="org-right">20</td>
+<td class="org-right">4</td>
+<td class="org-left">entry point</td>
</tr>
<tr>
-<td class="text-right">24</td>
-<td class="text-right">4</td>
-<td class="text-left">size</td>
+<td class="org-right">24</td>
+<td class="org-right">4</td>
+<td class="org-left">size</td>
</tr>
<tr>
-<td class="text-right">28</td>
-<td class="text-right">4</td>
-<td class="text-left">last modification time</td>
+<td class="org-right">28</td>
+<td class="org-right">4</td>
+<td class="org-left">last modification time</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
-<div id="outline-container-sec-9" class="outline-2">
-<h2 id="sec-9"><span class="section-number-2">9</span> Core architecture</h2>
+<div id="outline-container-orga49dca9" class="outline-2">
+<h2 id="orga49dca9"><span class="section-number-2">9.</span> Core architecture</h2>
<div class="outline-text-2" id="text-9">
<p>
Fifth core is simply some amount of already compiled into machine code
any time. Currently dictionary can contain at most 1000 entries.
</p>
</div>
-<div id="outline-container-sec-9-1" class="outline-3">
-<h3 id="sec-9-1"><span class="section-number-3">9.1</span> Dictionary entry format</h3>
+<div id="outline-container-org75e80d5" class="outline-3">
+<h3 id="org75e80d5"><span class="section-number-3">9.1.</span> Dictionary entry format</h3>
<div class="outline-text-3" id="text-9-1">
-<table class="table table-striped table-bordered table-hover table-condensed">
+<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
-<col class="right">
+<col class="org-right" />
-<col class="right">
+<col class="org-right" />
-<col class="left">
+<col class="org-left" />
</colgroup>
<thead>
<tr>
-<th scope="col" class="text-right">offset</th>
-<th scope="col" class="text-right">length</th>
-<th scope="col" class="text-left">description</th>
+<th scope="col" class="org-right">offset</th>
+<th scope="col" class="org-right">length</th>
+<th scope="col" class="org-left">description</th>
</tr>
</thead>
<tbody>
<tr>
-<td class="text-right">0</td>
-<td class="text-right">4</td>
-<td class="text-left">0 &lt; previous entry</td>
+<td class="org-right">0</td>
+<td class="org-right">4</td>
+<td class="org-left">0 &lt; previous entry</td>
</tr>
<tr>
-<td class="text-right"> </td>
-<td class="text-right"> </td>
-<td class="text-left">0 = last</td>
+<td class="org-right"> </td>
+<td class="org-right"> </td>
+<td class="org-left">0 = last</td>
</tr>
<tr>
-<td class="text-right"> </td>
-<td class="text-right"> </td>
-<td class="text-left">-1 = empty</td>
+<td class="org-right"> </td>
+<td class="org-right"> </td>
+<td class="org-left">-1 = empty</td>
</tr>
</tbody>
<tbody>
<tr>
-<td class="text-right">4</td>
-<td class="text-right">15</td>
-<td class="text-left">module name string</td>
+<td class="org-right">4</td>
+<td class="org-right">15</td>
+<td class="org-left">module name string</td>
</tr>
</tbody>
<tbody>
<tr>
-<td class="text-right">19</td>
-<td class="text-right">1</td>
-<td class="text-left">entry type</td>
+<td class="org-right">19</td>
+<td class="org-right">1</td>
+<td class="org-left">entry type</td>
</tr>
</tbody>
<tbody>
<tr>
-<td class="text-right">20</td>
-<td class="text-right">4</td>
-<td class="text-left">entry data</td>
+<td class="org-right">20</td>
+<td class="org-right">4</td>
+<td class="org-left">entry data</td>
</tr>
</tbody>
</table>
</p>
</div>
</div>
-<div id="outline-container-sec-9-2" class="outline-3">
-<h3 id="sec-9-2"><span class="section-number-3">9.2</span> Possible module types</h3>
+<div id="outline-container-org12381ef" class="outline-3">
+<h3 id="org12381ef"><span class="section-number-3">9.2.</span> Possible module types</h3>
<div class="outline-text-3" id="text-9-2">
-<table class="table table-striped table-bordered table-hover table-condensed">
+<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
-<col class="right">
+<col class="org-right" />
-<col class="left">
+<col class="org-left" />
-<col class="left">
+<col class="org-left" />
</colgroup>
<thead>
<tr>
-<th scope="col" class="text-right">type</th>
-<th scope="col" class="text-left">description</th>
-<th scope="col" class="text-left">"execute" action</th>
+<th scope="col" class="org-right">type</th>
+<th scope="col" class="org-left">description</th>
+<th scope="col" class="org-left">"execute" action</th>
</tr>
</thead>
<tbody>
<tr>
-<td class="text-right">0</td>
-<td class="text-left">data</td>
-<td class="text-left">compile "num" instruction</td>
+<td class="org-right">0</td>
+<td class="org-left">data</td>
+<td class="org-left">compile "num" instruction</td>
</tr>
<tr>
-<td class="text-right"> </td>
-<td class="text-left"> </td>
-<td class="text-left">with address to module</td>
+<td class="org-right"> </td>
+<td class="org-left"> </td>
+<td class="org-left">with address to module</td>
</tr>
</tbody>
<tbody>
<tr>
-<td class="text-right">1</td>
-<td class="text-left">submodule</td>
-<td class="text-left">compile "call" instruction</td>
+<td class="org-right">1</td>
+<td class="org-left">submodule</td>
+<td class="org-left">compile "call" instruction</td>
</tr>
<tr>
-<td class="text-right"> </td>
-<td class="text-left"> </td>
-<td class="text-left">with address to module</td>
+<td class="org-right"> </td>
+<td class="org-left"> </td>
+<td class="org-left">with address to module</td>
</tr>
</tbody>
<tbody>
<tr>
-<td class="text-right">2</td>
-<td class="text-left">imm. submodule</td>
-<td class="text-left">immediately call to module</td>
+<td class="org-right">2</td>
+<td class="org-left">imm. submodule</td>
+<td class="org-left">immediately call to module</td>
</tr>
</tbody>
</table>
</div>
</div>
-<div id="outline-container-sec-9-3" class="outline-3">
-<h3 id="sec-9-3"><span class="section-number-3">9.3</span> Memory map (average)</h3>
+<div id="outline-container-org33be039" class="outline-3">
+<h3 id="org33be039"><span class="section-number-3">9.3.</span> Memory map</h3>
<div class="outline-text-3" id="text-9-3">
-<table class="table table-striped table-bordered table-hover table-condensed">
+<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
-<col class="right">
+<col class="org-right" />
-<col class="left">
+<col class="org-left" />
-<col class="left">
+<col class="org-left" />
</colgroup>
<thead>
<tr>
-<th scope="col" class="text-right"><loc></th>
-<th scope="col" class="text-left"><size></th>
-<th scope="col" class="text-left"><desc></th>
+<th scope="col" class="org-right">location</th>
+<th scope="col" class="org-left">size</th>
+<th scope="col" class="org-left">description</th>
</tr>
</thead>
<tbody>
<tr>
-<td class="text-right">0</td>
-<td class="text-left">~4096</td>
-<td class="text-left">core</td>
+<td class="org-right">0</td>
+<td class="org-left">~4096</td>
+<td class="org-left">core</td>
</tr>
<tr>
-<td class="text-right">1500000</td>
-<td class="text-left">~32000</td>
-<td class="text-left">highlevel Fifth boot code</td>
+<td class="org-right">1500000</td>
+<td class="org-left">~32000</td>
+<td class="org-left">highlevel Fifth boot code</td>
</tr>
<tr>
-<td class="text-right">200000h</td>
-<td class="text-left"> </td>
-<td class="text-left">core startup messages area</td>
+<td class="org-right">200000h</td>
+<td class="org-left"> </td>
+<td class="org-left">core startup messages area</td>
</tr>
<tr>
-<td class="text-right">5200000</td>
-<td class="text-left"> </td>
-<td class="text-left">end of dynamic memory space</td>
+<td class="org-right">5200000</td>
+<td class="org-left"> </td>
+<td class="org-left">end of dynamic memory space</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
-<div id="outline-container-sec-10" class="outline-2">
-<h2 id="sec-10"><a id="ID-9b251eb9-aff6-4025-94bf-25e89e26d54a" name="ID-9b251eb9-aff6-4025-94bf-25e89e26d54a"></a><span class="section-number-2">10</span> Virtual machine</h2>
+<div id="outline-container-org81fd544" class="outline-2">
+<h2 id="org81fd544"><span class="section-number-2">10.</span> Dynamically loadable modules</h2>
<div class="outline-text-2" id="text-10">
-<p>
-Using CPU emulator slows it down but I shouldn't now think too mutch
-about, and waste my time on batteling with problems whitch results on
-complex design of PC hardware. Also it allows me to use existing DOS
-and resident drivers services in real mode. So I don't need to deal
-with hardware too mutch. It also allows me to use all free XMS for
-flat code & data storage.
-</p>
-
-<p>
-Current emulator emulates 1 CPU. It has 2 stacks, ~50 instructions,
-and 4GB flat address space (theoretically). I'm not sure that DOS
-6.22 that I currently prefer can handle more than 64 MB of RAM. While
-I tried to keep instructionset simple, I was forced to put in lot of
-complex instructions to make it's performance acceptable on
-emulator. On actual silicon ~20 instructions is enaugh (I think).
-</p>
-
-<p>
-Maybe one day similar system will run directly on custom silicon chip :)
-</p>
-
-
-<p>
-CPU has following registers:
-</p>
-<table class="table table-striped table-bordered table-hover table-condensed">
-
-
-<colgroup>
-<col class="left">
-
-<col class="left">
-</colgroup>
-<tbody>
-<tr>
-<td class="text-left">IP</td>
-<td class="text-left">instruction pointer</td>
-</tr>
-
-<tr>
-<td class="text-left">DSP</td>
-<td class="text-left">data stack pointer</td>
-</tr>
-
-<tr>
-<td class="text-left">RSP</td>
-<td class="text-left">return stack pointer</td>
-</tr>
-</tbody>
-</table>
-
-<p>
-Virtual CPU, commands (most of them are avaiable as ordinary commands
-in programming lanquage):
-</p>
-
-<p class="verse">
-<br >
-code mnemonic description<br >
-<br >
-0 nop does notheing<br >
-1 halt halt CPU ( return to DOS on emulator )<br >
-<br >
-2 kbd@ ( – c ) read scancode of pressed or released key.<br >
-                                Returns 0, if no data avaiable.<br >
-3 num <dword> ( – n ) put immidiate number into datastack<br >
-<br >
-4 jmp <dword> jump to specified code<br >
-5 call <dword>jump to specified code, save return address to<br >
-                                return stack.<br >
-<br >
-6 1+ ( n – n+1 )<br >
-7 1- ( n – n-1 )<br >
-<br >
-8 dup ( n – n n ) duplicate top of data stack<br >
-9 drop ( n – ) drop last element in data stack<br >
-<br >
-10 if <dword> ( n – ) jump to addr if top element was 0<br >
-11 ret jump to code, specified in return stack.<br >
-<br >
-12 c@ ( addr – n ) read byte from memory at specified address<br >
-13 c! ( n addr – ) store byte to specified memory<br >
-<br >
-14 push ( DSTK -> RSTK ) move top of datastack to returnstack<br >
-15 pop ( RSTK -> DSTK ) move top of returnstack to datastack<br >
-<br >
-16 <unused><br >
-17 rot ( n1 n2 n3 – n2 n3 n1) rotate stack elements<br >
-<br >
-18 disk@ ( FromDiskSect ToMem – ) read 1KB from disk into RAM<br >
-19 disk! ( FromMem ToDiskSect – ) write 1KB to disk<br >
-<br >
-20 @ ( addr – n ) read 32 bit number from memory<br >
-21 ! ( n addr – ) store 32 bit number to memory<br >
-<br >
-22 over ( n1 n2 – n1 n2 n1 ) self explaining …<br >
-23 swap ( n1 n2 – n2 n1 ) -,,-<br >
-<br >
-24 + ( n1 n2 – n1+n2 ) -,,-<br >
-25 - ( n1 n2 – n1-n2 ) -,,-<br >
-<br >
-26 * ( n1 n2 – n1*n2 ) -,,-<br >
-27 / ( n1 n2 – n1/n2 ) -,,-<br >
-<br >
-28 > ( n1 n2 – result ) is true when n1 > n2<br >
-29 < ( n1 n2 – result ) is true when n1 < n2<br >
-<br >
-30 not ( n1 – not_n1 ) logical not<br >
-31 i ( – n ) copies top of return stack into datastack<br >
-<br >
-32 cprt@ ( addr – n ) read one byte from hardware port<br >
-33 cprt! ( n addr – ) store one byte to hardware port<br >
-<br >
-34 i2 ( – n ) like "i" but takes socond top stack element.<br >
-35 i3 ( – n ) like "i" but takes third top stack element.<br >
-<br >
-36 shl ( n amount – n ) left bit shift<br >
-37 shr ( n amount – n ) right bit shift<br >
-<br >
-38 or ( n1 n2 – n ) logical or<br >
-39 xor ( n1 n2 – n ) exclusive logical or<br >
-<br >
-40 vidmap ( addr – ) copy memory from "addr" to video memory.<br >
-<br >
-41 mouse@ ( – x y button ) read mouse coordinates & buttons<br >
-<br >
-42 vidput ( addr1 addr2 x y – ) put image1 into image2, at<br >
-                                location x, y. Does clipping, so part of a big image<br >
-                                can be mapped into smaller one.<br >
-<br >
-43 cmove ( addr1 addr2 amount ) move memory from addr1 to addr2<br >
-                                if addr1 is greater than addr2 then count address<br >
-                                foward while moving, elseway starts from end and<br >
-                                counts backwards, so no data loss will occure on<br >
-                                overlapping.<br >
-<br >
-44 cfill ( c addr amount – ) fill memory starting at "addr"<br >
-                                with "c" bytes.<br >
-<br >
-45 tvidput ( addr1 addr2 x y – ) same as "vidput" but treats<br >
-                                color 255 in source image as transparent.<br >
-<br >
-46 depth ( – depth ) returns current depth of data stack.<br >
-<br >
-47 charput ( colorfg colorbg addrsrc addrdest x y )<br >
-                                draw character to image buffer located at "addrdest"<br >
-                                to specified x & y location. Decodes 8 bytes from<br >
-                                source to bits, used to draw character.<br >
-</p>
-</div>
-</div>
-
-<div id="outline-container-sec-11" class="outline-2">
-<h2 id="sec-11"><span class="section-number-2">11</span> Fifth source format</h2>
-<div class="outline-text-2" id="text-11">
-<p>
-Fifth uses a different character table and codes than ASCII (still
-almost similar). I call it FSCII (Fifth Standard Code for Information
-Interchange) for example space character is not 32 but 255 instead. I
-plan to use mainly HEX numbers, and create new characters to represent
-numeric values. So typical nemric characters "0123…" is treated
-like ordinary letters.
-</p>
-</div>
-<div id="outline-container-sec-11-1" class="outline-3">
-<h3 id="sec-11-1"><span class="section-number-3">11.1</span> FSCII</h3>
-<div class="outline-text-3" id="text-11-1">
-<table class="table table-striped table-bordered table-hover table-condensed">
-
-
-<colgroup>
-<col class="right">
-
-<col class="left">
-
-<col class="left">
-</colgroup>
-<thead>
-<tr>
-<th scope="col" class="text-right">DEC</th>
-<th scope="col" class="text-left">HEX</th>
-<th scope="col" class="text-left">function</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td class="text-right">0 - 15</td>
-<td class="text-left">0 - F</td>
-<td class="text-left">HEX numbers</td>
-</tr>
-
-<tr>
-<td class="text-right">252</td>
-<td class="text-left">FC</td>
-<td class="text-left">backspace</td>
-</tr>
-
-<tr>
-<td class="text-right">253</td>
-<td class="text-left">FD</td>
-<td class="text-left">tabulator (TAB)</td>
-</tr>
-
-<tr>
-<td class="text-right">254</td>
-<td class="text-left">FE</td>
-<td class="text-left">carriage return (CR)</td>
-</tr>
-
-<tr>
-<td class="text-right">255</td>
-<td class="text-left">FF</td>
-<td class="text-left">space</td>
-</tr>
-
-<tr>
-<td class="text-right">else</td>
-<td class="text-left"> </td>
-<td class="text-left">ordinary characters, same as in ASCII.</td>
-</tr>
-</tbody>
-</table>
-</div>
-</div>
-</div>
-<div id="outline-container-sec-12" class="outline-2">
-<h2 id="sec-12"><span class="section-number-2">12</span> Fifth commands</h2>
-<div class="outline-text-2" id="text-12">
-</div><div id="outline-container-sec-12-1" class="outline-3">
-<h3 id="sec-12-1"><span class="section-number-3">12.1</span> Compilation & miscellaneous</h3>
-<div class="outline-text-3" id="text-12-1">
-<p class="verse">
-init module ( – )<br >
-                First module, control is passed to on startup. Contains<br >
-                initialization routines. Also it is the last core module.<br >
-                All new modules on top of it comes as result of executing<br >
-                external source files.<br >
-<br >
-head <name> ( – ) compiles new dictionary entry without specifying<br >
-                new module type.<br >
-                ex: head myentry<br >
-<br >
-: <name> ( – ) creates new code module<br >
-; ( – ) ends module (immideate)<br >
-                ex: : hello ." hi there" ;<br >
-<br >
-const <name> ( n – ) defines new constant.<br >
-                ex: 2147483647 const max<br >
-<br >
-:i <name> ( – ) same as ":" but this module will be executed<br >
-                immideately even in compile mode.<br >
-                ex: :i ( 41 scan ;<br >
-<br >
-create <name> ( – ) same as "head" , but specify module type as data.<br >
-                ex: create LotoResults 5 , 13 , 52 , 12 , 11 , 3 ,<br >
-<br >
-allot ( n – ) allocate n bytes in dictionary.<br >
-                ex: create MyArray 100 allot<br >
-<br >
-" <string>" ( – ) compile string and its size into core.<br >
-                ex: create Mystring " This is it's contects"<br >
-<br >
-str <name> <string>" ( – ) just shorter way for defining strings.<br >
-                ex: str Mystring This is it's contenc"<br >
-<br >
-var <name> ( – ) define new 32 bit variable.<br >
-                ex: var result<br >
-<br >
-' <module> ( – n ) return memory address of given entry.<br >
-                ex: ' init<br >
-<br >
-forget <name> ( – ) erases from RAM given entry and all entries what was<br >
-                defined after it.<br >
-                ex: forget myprog<br >
-<br >
-[ ( – ) set interpret mode (immideate)<br >
-] ( n – ) set compile mode and compile top stack element<br >
-                in as literal. Together [ …. ] cobination provides good<br >
-                way to compute some values only once, at compile time,<br >
-                rather than every time while program is running.<br >
-                ex: : calculate - [ 4 MyConst1 + MyConst2 * ] ;<br >
-<br >
-defer <name> ( – ) creates new module, with jump instruction.<br >
-                Later address where to jump can be modified by "is" command.<br >
-                This provides method of foward referencing. So you can use<br >
-                modules what not jet exist.<br >
-is ( address1 address2 – ) address1 - where to jump, address2 -<br >
-                address of module created by defer command.<br >
-                ex: defer dispver<br >
-                        : run dispver ." running …" ;<br >
-                               … whatever …<br >
-                        : (dispver ." Version 9.99 " ;<br >
-                        ' (dispver ' dispver is<br >
-<br >
-                Now if I type "run" on the screen appears:<br >
-                        Version 9.99 running …<br >
-<br >
-asc <char> ( – ) reads char ascii code and treats it as literal.<br >
-                (immideate)<br >
-                ex: : BreakLine 30 do asc - emit loop ;<br >
-                                 same as:<br >
-                    : BreakLine 30 do 45 emit loop ;<br >
-<br >
-dyninc ( handle – ) execute code in dynamic memory handle.<br >
-                automatically deallocates it when done.<br >
-<br >
-include ( filenumber – ) execute code in specified file.<br >
-<br >
-words ( – ) display existing blocks in core.<br >
-<br >
-bye ( – ) exit from Fifth<br >
-<br >
-fkey ( – c )<br >
-                Read one byte from input stream.<br >
-<br >
-sadd ( c addr – )<br >
-                Add one byte "c" to string located at "addr" and updates<br >
-                string length.<br >
-<br >
-scan ( c – )<br >
-                Read input stream and store it to pad until it finds c .<br >
-                It ignores all "c" bytes until it finds any non "c" byte.<br >
-                in other words:<br >
-                                c is: "<br >
-                         input stream: """"This is test !"aoeu idh<br >
-                               result: This is test !<br >
-<br >
-                Is useful for breaking text lines into words.<br >
-<br >
-skey ( – c )<br >
-                So called safe "fkey". Reads data from input stream<br >
-                but converts characters with ASCII codes: 9 13 10<br >
-                to spaces.<br >
-<br >
-str=str? ( adr1 adr2 – result )<br >
-                Compares string at "adr1" with string at "adr2", returns<br >
-                true flag if they are equal or false if they are not.<br >
-                true = -1<br >
-                false = 0<br >
-<br >
-find ( – addr )<br >
-                Searches whole dictionary for word in "pad". If found,<br >
-                returns it address, if not, returns 0.<br >
-<br >
-execute ( – )<br >
-                Execute word located in "pad". Depending on "mode".<br >
-<br >
-dta ( addr – DataAddr )<br >
-                Calculates address of dictionary entry data area, from<br >
-                entry point.<br >
-<br >
-2num ( – num result )<br >
-                Attempt to convert string located in "pad" into numeric<br >
-                value. If succeed returns number and true as result.<br >
-                If not, returns whatever and false as result.<br >
-<br >
-dadd ( addr length – )<br >
-                Add to dictionary data located at "addr", with specified<br >
-                length.<br >
-<br >
-lit ( n – )<br >
-                Act with number depending on "mode". When interpreting,<br >
-                leaves it in stack.<br >
-<br >
-<br >
-incmod ( addr – )<br >
-                Add to dictionary data located at "addr"+1 , length is taken<br >
-                from "addr".<br >
-<br >
-here ( – n )<br >
-                return "h" contents.<br >
-<br >
-mode var 8 bit<br >
-                Holds input stream parser operation mode.<br >
-                0 = interpreting<br >
-                1 = compiling<br >
-<br >
-pad var 128 bytes<br >
-                Holds temprorary strings.<br >
-<br >
-h var 32 bit<br >
-                Pointer to free byte in memory, always at the end of the<br >
-                dictionary. Each time when something is stored<br >
-                by "c," command, pointer is incareased.<br >
-<br >
-lp var 32 bit<br >
-                Pointer to last dictionary word. Each time when new word is<br >
-                compiled or erased by "forget", this pointer is updated.<br >
-<br >
-modulechk ( Dstr<filename> – ) check if module is loaded, if not<br >
-                immideately load it.<br >
-<br >
-ne ( entrydata entrytype – ) Compile new dictionary entry.<br >
-                It's name must be in "pad".<br >
-</p>
</div>
-</div>
-<div id="outline-container-sec-12-2" class="outline-3">
-<h3 id="sec-12-2"><span class="section-number-3">12.2</span> Conditionals & control flow</h3>
-<div class="outline-text-3" id="text-12-2">
-<p class="verse">
-if ( flag – ) (immideate)<br >
-                "if 1.. else 2.. then" or<br >
-                "if 1.. then" construction. Conditional execution.<br >
-                Performs "1.." if "flag" was true,<br >
-                elseway performs "2.." if exist. Execution continues after<br >
-                word "then".<br >
-                ex: 1 if ." nonzero" else ." zero" then<br >
-<br >
->= ( n1 n2 – result ) true if (n1 = n2) or (n1 > n2)<br >
-                ex: 5 3 >= if ." first number is greater or equal" then<br >
-<br >
-<= ( n1 n2 – result ) true if (n1 = n2) or (n1 < n2)<br >
-= ( n1 n2 – result ) true if n1 = n2<br >
-<br >
-do ( count – ) (immideate)<br >
-                "do .. loop" construction. Performs ".." "count" times.<br >
-                In every step "count" is decareased until it is 0.<br >
-                ex: : test 5 do i .d loop ;<br >
-                result: 4 3 2 1 0<br >
-<br >
-doexit ( – ) exit from "do .. loop"<br >
-<br >
-for ( count top – ) (immideate)<br >
-                "for .. loop" construction. Performs ".." (top - count) times.<br >
-                In every step "count" is incareased until it reaches "top" .<br >
-                ex: : test 4 10 for i .d loop ;<br >
-                result: 4 5 6 7 8 9<br >
-<br >
-forexit ( – ) exit from "for .. loop"<br >
-<br >
-until ( – ) (immideate)<br >
-                "until .. loop" construction. Performs ".." until flag become<br >
-                true. False by default. Top of return stack holds flag.<br >
-<br >
-done ( – ) exit from "until .. loop"<br >
-<br >
-</p>
-</div>
-</div>
-<div id="outline-container-sec-12-3" class="outline-3">
-<h3 id="sec-12-3"><span class="section-number-3">12.3</span> Disk & file access</h3>
-<div class="outline-text-3" id="text-12-3">
+<div id="outline-container-org79d1c84" class="outline-3">
+<h3 id="org79d1c84"><span class="section-number-3">10.1.</span> Keyboard driver</h3>
+<div class="outline-text-3" id="text-10-1">
<p class="verse">
-diskload ( FromDisk ToMem amount – )<br >
-                Load specified abount of bytes from disk into memory.<br >
-<br >
-disksave ( FromMem ToDisk amount – )<br >
-                save specified abount of bytes from memory into disk.<br >
-<br >
-format ( – ) Erase all files.<br >
-<br >
-fsDfilesize@ ( handle – size )<br >
-                Return size of opened file.<br >
-<br >
-fsDcurloc@ ( handle – location )<br >
-                Return current location in file.<br >
-<br >
-fsDupdated@ ( handle – updated? )<br >
-                Return true if file was updated,<br >
-                ie. write operations occured.<br >
-<br >
-fssave ( FromMem DestFileHandle amount – )<br >
-                Save data to file.<br >
-<br >
-fsload ( SrcFileHandle ToMem amount – )<br >
-                Load data from file.<br >
-<br >
-fseof ( handle – bytesLeft )<br >
-                Return amount of bytes left till end of file.<br >
-                Useful before read operation.<br >
-<br >
-fsls ( – ) List all files and lists (directories,folders)<br >
-                in current path.<br >
-<br >
-fslsr ( – ) Same as "fsls" but recursively scans also sub lists.<br >
-<br >
-fscl ( DynStrHand – )<br >
-                Change list (path)<br >
-<br >
-fscreate ( DynStrHand – DescPnt )<br >
-                Create new file or list. Can create multiple lists at once.<br >
-                ex: when creating:<br >
-                    "\listGAMES\listSTRATEGY\listSIMWORLD\5th-runme"<br >
-                and only "\listGAMES\" already exist, then<br >
-                "listSTRATEGY" and "listSIMWORLD" lists will be created,<br >
-                and empty file "5th-runme" placed in there.<br >
-<br >
-fsDsave ( DynHand<data> DynStrHand<filename> – )<br >
-                Create new file and save all data from dynamic memory<br >
-                block to it.<br >
-<br >
-fsDload ( DynStr<SrcFileName> DynHand<DataDest> – )<br >
-                Load whole file into dynamic memory block.<br >
-<br >
-fsDloadnew ( DynStr<SrcFileName> – DynHand<DataDest> )<br >
-                Load whole file into new dynamic memory block.<br >
-</p>
-</div>
-</div>
-<div id="outline-container-sec-12-4" class="outline-3">
-<h3 id="sec-12-4"><span class="section-number-3">12.4</span> Dynamic memory</h3>
-<div class="outline-text-3" id="text-12-4">
+<br />
+KBD_@ ( – code ) get scancodes for pressed keys from keyboard.<br />
+KBD_down? ( key – result ) check is key with specified scancode<br />
+                currently pressed down.<br />
+KBD_SC2FSCII ( code – FSCII ) convert key scancode into FSCII code,<br />
+                or in FSK (Fifth standard keycode).<br />
+KBD_F@ ( – FSCII ) read pressed key FSCII or FSK, returns -1 if no<br />
+                keys are pressed.<br />
+KBD_FW@ ( – FSCII ) read pressed key FSCII or FSK, if no keys is<br />
+                are pressed then waits until there is.<br />
+<br />
+                FSK<br />
+                —<br />
+In HEX.<br />
+<br />
+FC backspace<br />
+FD TAB<br />
+FE enter<br />
+FF space<br />
+<br />
+400 ESC<br />
+401 … F1 …<br />
+410 up<br />
+411 right<br />
+412 down<br />
+413 left<br />
+414 INS<br />
+415 DEL<br />
+416 home<br />
+417 end<br />
+418 PG/UP<br />
+419 PG/DN<br />
+</p>
+</div>
+</div>
+<div id="outline-container-org99b4378" class="outline-3">
+<h3 id="org99b4378"><span class="section-number-3">10.2.</span> Mouse driver</h3>
+<div class="outline-text-3" id="text-10-2">
<p class="verse">
-dynal ( size – handle )<br >
-                Allocate dynamic memory block and return it's handle.<br >
-<br >
-dynde ( handle – )<br >
-                Deallocate dynamic memory block.<br >
-<br >
-dynp ( handle – addr )<br >
-                Returns pointer to memory where dynamic block<br >
-                data begins.<br >
-<br >
-dyns ( handle – size )<br >
-                Returns size of dynamic block.<br >
-<br >
-dynresize ( NewSize handle – )<br >
-                Nondestructively resize dynamic block.<br >
-<br >
-dync@ ( addr handle )<br >
-                Read one byte from dynamic block.<br >
-<br >
-dync! ( byte addr dynhandle )<br >
-                Write one byte to dynamic block.<br >
-<br >
-dyn@ ( addr handle )<br >
-                Read 32 bit number from dynamic block.<br >
-                Address will spacify, whitch number, not byte.<br >
-<br >
-dyn! ( 32BitNum addr dynhandle )<br >
-                Write 32 bit number to dynamic block.<br >
-                Address will spacify, whitch number, not byte.<br >
-<br >
-dyncon ( size "name" – )<br >
-                Allocate dynamic block with specified size, and<br >
-                create constant honding its handle.<br >
-                ex: 100 dyncon MyNewBlock<br >
-<br >
-dyn. ( handle – )<br >
-                Write contenc of dynamic memory block to screen.<br >
+mousex var Mouse x coordinate.<br />
+mousey var Mouse y coordinate.<br />
+mousekeyl var Mouse left key.<br />
+mousekeym var Mouse middle key.<br />
+mousekeyr var Mouse right key.<br />
+mousec var Display current mouse coordinates in top left part of screen,<br />
+                if true. (good for debugging)<br />
+mousepointer var Image buffer, holding current mouse pointer.<br />
+mouseadd ( ModuleAddr x1 x2 y1 y2 – ) Add specified area on screen,<br />
+                into mause click buffer. If any mouse button is clicked on<br />
+                that area, module at "ModuleAddr" will be executed.<br />
+mousebe var Amount of buffer elements.<br />
+mousedo ( – ) Updates mouse coordinates and keys. Parse mouse<br />
+                click buffer, and draw mouse cursor to "screen".<br />
</p>
</div>
</div>
-<div id="outline-container-sec-12-5" class="outline-3">
-<h3 id="sec-12-5"><span class="section-number-3">12.5</span> Graphics and text</h3>
-<div class="outline-text-3" id="text-12-5">
-<p class="verse">
-. ( n – ) print number on screen<br >
-<br >
-d. ( n – ) print number on screen in decimal<br >
-<br >
-? ( addr – ) print 32 bit value located at addr.<br >
-<br >
-." <string>" ( – ) print string into screen. Immideately<br >
-                compiles.<br >
-                ex: : greeting ." Hello, World" ;<br >
-<br >
-tab. ( – ) print tabulator<br >
-<br >
-calccol ( b g r – c ) calculate color what best matches given<br >
-                Blue Green & Red values. Values must be in range 0 - 255.<br >
-<br >
-imgalloc ( xsize ysize – imgbuf ) allocate image buffer for<br >
-                specified size.<br >
-<br >
-imgsize ( imgbuf – ) print on the screen X & Y size of image<br >
-                buffer.<br >
-<br >
-point ( x y imgbuf – addr ) returns memory address for specified<br >
-                pixel.<br >
-<br >
-pset ( color x y imgbuf – ) set graphic point<br >
-<br >
-boxf ( x1 x2 y1 y2 imgbuf color – ) draw filled box<br >
-<br >
-cls ( imgbuf – ) clear image buffer<br >
-<br >
-setpal ( b g r color – ) set palette value for specified color.<br >
-                values bust be in size 0 - 63.<br >
-<br >
-putchar ( char color x y imgbuf – ) put graphic character in<br >
-                imagebuffer to specified (x & y) location.<br >
-<br >
-scroll ( x y imgbuf – ) scroll in imgbuf.<br >
-<br >
-scrollf ( color x y screen – ) scroll and fill empty space with<br >
-                given color.<br >
-<br >
-at! ( x y – ) set cursor location<br >
-curc! ( color – ) set text color<br >
-curb! ( solor – ) set backround color<br >
-<br >
-colnorm ( – ) set text color to normal<br >
-colneg ( – ) set text color to negative (selected)<br >
-<br >
-dyntype ( dynhandle – ) display contenc of dynamic memory on screen<br >
-fsdisp ( file – ) clear screen, display file, and wait for key<br >
-<br >
-type ( addr length – )<br >
-                Types on the screen string, from memory at addr and<br >
-                specified length.<br >
-<br >
-write ( addr – )<br >
-                Types on the screen string, from memory at "addr"+1<br >
-                length is taken from "addr" .<br >
-<br >
-screen const 32 bit<br >
-                Holds handle of screen buffer.<br >
-<br >
-copyscreen ( SrcImgHandle DestImgHandle – ) copy contenc of source<br >
-                image to destination image. Source and destination images<br >
-                must have same size.<br >
-</p>
-</div>
-</div>
-<div id="outline-container-sec-12-6" class="outline-3">
-<h3 id="sec-12-6"><span class="section-number-3">12.6</span> Math, memory & stack manipulation</h3>
-<div class="outline-text-3" id="text-12-6">
-<p class="verse">
-off ( n – ) writes 0 to given address, good for zeroing variable.<br >
-                ex: MyVariable off<br >
-on ( n – ) writes -1 (true flag) to given address.<br >
-                ex: MyVariable on<br >
-<br >
-2dup ( n1 n2 – n1 n2 n1 n2 )<br >
-2drop ( n1 n2 – )<br >
-nip ( n1 n2 – n2 )<br >
-neg ( n1 – -n1 ) negotiate<br >
-bit@ ( n bit – result ) return specified bit from n.<br >
-                ex: 38 2 bit@ (result will be 1)<br >
-to32bit ( n1 n2 n3 n4 – n32 ) treat 4 last stack elements as bytes<br >
-                and unite them into 32 bit dword. Most significant byte<br >
-                on top.<br >
-                ex: 12 76 23 11 to32bit result: 186076172<br >
-<br >
-to8bit ( n32 – n1 n2 n3 n4 ) break 32 bit number into 4 bytes.<br >
-                Useful if you need to send 32 bit numbers thru 8 bit COM<br >
-                port.<br >
-                ex: 186076172 to8bit result: 12 76 23 11<br >
-<br >
-mod ( n1 n2 – reminder ) divide n1 by n2 and returns reminder.<br >
-                ex: 12 5 mod result: 2<br >
-<br >
-bound ( low n high – n ) check if n is in given bounds,<br >
-                if not then incarease/decarease it to match bounds.<br >
-                ex: 5 80 15 bound result: 15<br >
-                    5 10 15 bound result: 10<br >
-                    5 -10 15 bound result: 5<br >
-<br >
-bound? ( low n high – result ) returns true if n is in the<br >
-                given bounds.<br >
-<br >
-tab ( col – spaces) calculate amount of spaces to add<br >
-                ta reach next tabulation from given column.<br >
-<br >
-count ( addr – addr+1 n )<br >
-                Useful for returning bytes from constantly incareasing<br >
-                address. Module "type" is nice example.<br >
-<br >
-c, ( n – )<br >
-                store one byte at memory specified by "h". And incarease<br >
-                "h" by 1.<br >
-<br >
-, ( n – )<br >
-                store 32 bit number at memory specified by "h". And<br >
-                incarease "h" by 4.<br >
-<br >
-cmove ( addr1 addr2 n – )<br >
-                copy "n" amount of bytes from memory at "addr1" to memory<br >
-                at "addr2".<br >
-<br >
-rnd ( limit – result )<br >
-                generates random number in range 0 to "limit"-1.<br >
-<br >
-abs ( n – |n| )<br >
-                returns absolute value of "n"<br >
-</p>
-</div>
-</div>
-<div id="outline-container-sec-12-7" class="outline-3">
-<h3 id="sec-12-7"><span class="section-number-3">12.7</span> Dynamic & static strings</h3>
-<div class="outline-text-3" id="text-12-7">
-<p>
-Fifth supports both static and dynamic strings. Static strings must
-have predefined space reserved, and string mustn't exceed this
-length. They manipulation is faster. But they use more memory. Static
-string memory address is used to refer to the string.
-</p>
+<div id="outline-container-org0aa9e1f" class="outline-3">
+<h3 id="org0aa9e1f"><span class="section-number-3">10.3.</span> 2D graphic library</h3>
+<div class="outline-text-3" id="text-10-3">
+<dl class="org-dl">
+<dt>lineh ( color len x y imgbuf – )</dt><dd>draws horisontal line from X,Y
+coordinates to right, with specified length.</dd>
-<p>
-Dynamic strings can have at any time length form 0 to 0FFh, They take
-up only memory they currently need. They are held in dynamic memory
-blocks, so dynamic block handle is used to refer to this string.
-</p>
+<dt>linev ( color len x y imgbuf – )</dt><dd>draws vertical line down, from
+coordinates X,Y, with specified length.</dd>
-<p>
-Both types of strings are stored in the way, where first (0th) byte
-holds current string length, following bytes are string itself.
+<dt>box ( color x2 x1 y2 y1 imgbuf – )</dt><dd><p>
+draws rectangular box. x2
+bust be >= x1, y2 must be >= y1.
</p>
+<pre class="example" id="orgfea073c">
+x1,y1-----------+
+ | |
+ | |
+ +-----------x2,y2
+</pre></dd>
-<p class="verse">
-Dynamic:<br >
-<br >
-Dstral ( – handle )<br >
-                Allocate new string.<br >
-<br >
-Dstrlen ( handle – length )<br >
-                Return string length.<br >
-<br >
-c+Dstr ( chr handle – )<br >
-                Add one byte to end of the string.<br >
-<br >
-c+lDstr ( chr handle – )<br >
-                Add one byte to left side (beginning) of the string.<br >
-<br >
-Dstr. ( handle – )<br >
-                Write contec of string into screen.<br >
-<br >
-Dstrsure ( size Dstr – )<br >
-                Makes sure that at least rquested<br >
-                "size" (amount of characters) is allocated for given<br >
-                dynamic string.<br >
-<br >
-Dstr2str ( handle address – )<br >
-                Copy dyamic string into static memory space.<br >
-<br >
-str2Dstr ( address handle – )<br >
-                Copy static string into dyamic string.<br >
-<br >
-Dstr+str ( Dstr addr – )<br >
-                Add contenc of dynamic string to static string.<br >
-<br >
-D" any string" ( – Dstr )<br >
-                Moves specified string into dynamic string called "defDstr".<br >
-<br >
-D> any_string ( – Dstr )<br >
-                Moves specified string into dynamic string called "defDstr".<br >
-                Space marks end of string!<br >
-<br >
-D>2 any_string ( – Dstr )<br >
-                Moves specified string into dynamic string called "defDstr2".<br >
-                Space marks end of string!<br >
-<br >
-Dstr+Dstr ( Dstr1 Dstr2 – )<br >
-                Adds "Dstr1" to "Dstr2" and places result into "Dstr2".<br >
-<br >
-Dstrclear ( Dstr – )<br >
-                Clears contenc of dynamic string.<br >
-<br >
-Dstr2Dstr ( Dstr1 Dstr2 – )<br >
-                Moves "Dstr1" to "Dstr2".<br >
-Dstr ( data" name – )<br >
-                Creates new dynamic string and moves specified data into it.<br >
-                Then creates new constant with given "name" holding created<br >
-                dynamic string handle.<br >
-<br >
-                ex: Dstr Hello, my name is Sven!" message \ creates it<br >
-                    message Dstr. \ tests it<br >
-<br >
-Dstrlscan ( char Dstr – loc )<br >
-                Searches dynamic string for "char", from left to right,<br >
-                returns first found "char" location in string, or 0,<br >
-                if not found.<br >
-<br >
-Dstrrscan ( char Dstr – loc )<br >
-                Searches dynamic string for "char", from right to left,<br >
-                returns first found "char" location in string, or 0,<br >
-                if not found.<br >
-<br >
-Dstrlscane ( char Dstr – loc )<br >
-                Same as "Dstrlscan" buf returns string length+1 as location.<br >
-ÿ<br >
-Dstrleft ( amo Dstr – )<br >
-                Only specified amount of characters from left remains<br >
-                in dynamic string. ie. cut right part out.<br >
-<br >
-Dstrright ( amo Dstr – )<br >
-                Only specified amount of characters from right remains<br >
-                in dynamic string. ie. cut left part out.<br >
-<br >
-Dstrcutl ( amo Dstr – )<br >
-                Cut specified amount of characters from left of dynamic<br >
-                string out.<br >
-<br >
-Dstrsp ( char Dstr1 Dstr2 – )<br >
-                Separate dynamic string in Dstr1 into two parts,<br >
-                using "char" as separator. First part will be stored in<br >
-                "Dstr2", second part in "Dstr1".<br >
-                ex: asc \ \ ..separator<br >
-                    D> listF\listLIB\5TH_DRVMOUSE \ ..separate from<br >
-                    defDstr2 \ ..place result in<br >
-                    Dstrsp \ separation command<br >
-                    defDstr Dstr. \ will be: listLIB\5TH_DRVMOUSE<br >
-                    defDstr2 Dstr. \ will be: listF<br >
-<br >
-Dv ( addr – )<br >
-                Allocates empty dynamic string, and places it's handle<br >
-                into given address.<br >
-<br >
-Df ( addr – )<br >
-                Reads dynamic string handle from given address and<br >
-                deallocates (frees) it.<br >
-<br >
-ex: var mystring1<br >
-        : testmodule<br >
-        mystring1 Dv \ allocates string<br >
-<br >
-                <whatever><br >
-<br >
-        mystring1 Df ; \ deallocates it again when no longer needed.<br >
-</p>
-</div>
-</div>
+<dt>flipv ( imgbuf – )</dt><dd>flip image vertically.</dd>
+
+<dt>imgcoltrans ( ImgBuf Color ToColor – )</dt><dd>Translate all pixels in
+specified image with "Color" into "ToColor".</dd>
+
+<dt>imgfill ( color x y imgbuf – )</dt><dd>Fill image region starting at
+location X & Y with specified color.</dd>
+</dl>
</div>
-<div id="outline-container-sec-13" class="outline-2">
-<h2 id="sec-13"><span class="section-number-2">13</span> Dynamically loadable modules</h2>
-<div class="outline-text-2" id="text-13">
-</div><div id="outline-container-sec-13-1" class="outline-3">
-<h3 id="sec-13-1"><span class="section-number-3">13.1</span> Keyboard driver</h3>
-<div class="outline-text-3" id="text-13-1">
-<p class="verse">
-<br >
-KBD_@ ( – code ) get scancodes for pressed keys from keyboard.<br >
-KBD_down? ( key – result ) check is key with specified scancode<br >
-                currently pressed down.<br >
-KBD_SC2FSCII ( code – FSCII ) convert key scancode into FSCII code,<br >
-                or in FSK (Fifth standard keycode).<br >
-KBD_F@ ( – FSCII ) read pressed key FSCII or FSK, returns -1 if no<br >
-                keys are pressed.<br >
-KBD_FW@ ( – FSCII ) read pressed key FSCII or FSK, if no keys is<br >
-                are pressed then waits until there is.<br >
-<br >
-                FSK<br >
-                —<br >
-In HEX.<br >
-<br >
-FC backspace<br >
-FD TAB<br >
-FE enter<br >
-FF space<br >
-<br >
-400 ESC<br >
-401 … F1 …<br >
-410 up<br >
-411 right<br >
-412 down<br >
-413 left<br >
-414 INS<br >
-415 DEL<br >
-416 home<br >
-417 end<br >
-418 PG/UP<br >
-419 PG/DN<br >
-</p>
</div>
+
+<div id="outline-container-orgff6cdef" class="outline-3">
+<h3 id="orgff6cdef"><span class="section-number-3">10.4.</span> Trigonometry functions</h3>
+<div class="outline-text-3" id="text-10-4">
</div>
-<div id="outline-container-sec-13-2" class="outline-3">
-<h3 id="sec-13-2"><span class="section-number-3">13.2</span> Mouse driver</h3>
-<div class="outline-text-3" id="text-13-2">
-<p class="verse">
-mousex var Mouse x coordinate.<br >
-mousey var Mouse y coordinate.<br >
-mousekeyl var Mouse left key.<br >
-mousekeym var Mouse middle key.<br >
-mousekeyr var Mouse right key.<br >
-mousec var Display current mouse coordinates in top left part of screen,<br >
-                if true. (good for debugging)<br >
-mousepointer var Image buffer, holding current mouse pointer.<br >
-mouseadd ( ModuleAddr x1 x2 y1 y2 – ) Add specified area on screen,<br >
-                into mause click buffer. If any mouse button is clicked on<br >
-                that area, module at "ModuleAddr" will be executed.<br >
-mousebe var Amount of buffer elements.<br >
-mousedo ( – ) Updates mouse coordinates and keys. Parse mouse<br >
-                click buffer, and draw mouse cursor to "screen".<br >
+<div id="outline-container-org868f7c6" class="outline-4">
+<h4 id="org868f7c6"><span class="section-number-4">10.4.1.</span> sin ( a – result )</h4>
+<div class="outline-text-4" id="text-10-4-1">
+<p>
+Return sinus from given angle "a", 360ø is 2000. So 1000 represents
+180ø angle. Result will be in range -10'000 to 10'000, instead of ñ1.
</p>
</div>
</div>
-<div id="outline-container-sec-13-3" class="outline-3">
-<h3 id="sec-13-3"><span class="section-number-3">13.3</span> 2D graphic library</h3>
-<div class="outline-text-3" id="text-13-3">
-<p class="verse">
-lineh ( color len x y imgbuf – ) draws horisontal line<br >
-                from X,Y coordinates to right, with specified length.<br >
-linev ( color len x y imgbuf – ) draws vertical line<br >
-                down, from coordinates X,Y, with specified length.<br >
-box ( color x2 x1 y2 y1 imgbuf – ) draws rectangular<br >
-                box. x2 bust be >= x1, y2 must be >= y1.<br >
-                        x1,y1–———+<br >
-                          | |<br >
-                          | |<br >
-                          +–———x2,y2<br >
-<br >
-flipv ( imgbuf – ) flip image vertically.<br >
-imgcoltrans ( ImgBuf Color ToColor – ) Translate all pixels in<br >
-                specified image with "Color" into "ToColor".<br >
-imgfill ( color x y imgbuf – ) Fill image region starting at location<br >
-                X & Y with specified color.<br >
+<div id="outline-container-orgc3f161e" class="outline-4">
+<h4 id="orgc3f161e"><span class="section-number-4">10.4.2.</span> cos ( a – result )</h4>
+<div class="outline-text-4" id="text-10-4-2">
+<p>
+Return cosinus from given angle. Parameters are like in <a href="#org868f7c6">sin</a> function.
</p>
</div>
</div>
-<div id="outline-container-sec-13-4" class="outline-3">
-<h3 id="sec-13-4"><span class="section-number-3">13.4</span> Trigonometry functions</h3>
-<div class="outline-text-3" id="text-13-4">
-<p class="verse">
-sin ( a – result ) return sinus from given angle "a",<br >
-                360ø is 2000. So 1000 represents 180ø angle.<br >
-                Result will be in range -10'000 to 10'000, instead of ñ1.<br >
-<br >
-cos ( a – result ) return cosinus from given angle.<br >
-                Parameters are like in "sin" function.<br >
-</p>
-</div>
</div>
</div>
-</div><div class="col-md-3"><nav id="table-of-contents">
-<div id="text-table-of-contents" class="bs-docs-sidebar">
-<ul class="nav">
-<li><a href="#sec-1">1. General</a>
-<ul class="nav">
-<li><a href="#sec-1-1">1.1. Source code</a></li>
-</ul>
-</li>
-<li><a href="#sec-2">2. !Project deprecated!</a></li>
-<li><a href="#sec-3">3. Introduction</a>
-<ul class="nav">
-<li><a href="#sec-3-1">3.1. screenshots</a></li>
-</ul>
-</li>
-<li><a href="#sec-4">4. Installation</a></li>
-<li><a href="#sec-5">5. Fifth distribution directory tree description</a></li>
-<li><a href="#sec-6">6. Software/Hardware/Human requirements</a>
-<ul class="nav">
-<li><a href="#sec-6-1">6.1. Software</a></li>
-<li><a href="#sec-6-2">6.2. Hardware</a></li>
-<li><a href="#sec-6-3">6.3. Human</a></li>
-</ul>
-</li>
-<li><a href="#sec-7">7. Numbers representation within Fifth</a></li>
-<li><a href="#sec-8">8. Disk file map, and it's data structures</a>
-<ul class="nav">
-<li><a href="#sec-8-1">8.1. disk allocation</a></li>
-<li><a href="#sec-8-2">8.2. FAT entry format:</a></li>
-<li><a href="#sec-8-3">8.3. file entry format</a></li>
-</ul>
-</li>
-<li><a href="#sec-9">9. Core architecture</a>
-<ul class="nav">
-<li><a href="#sec-9-1">9.1. Dictionary entry format</a></li>
-<li><a href="#sec-9-2">9.2. Possible module types</a></li>
-<li><a href="#sec-9-3">9.3. Memory map (average)</a></li>
-</ul>
-</li>
-<li><a href="#sec-10">10. Virtual machine</a></li>
-<li><a href="#sec-11">11. Fifth source format</a>
-<ul class="nav">
-<li><a href="#sec-11-1">11.1. FSCII</a></li>
-</ul>
-</li>
-<li><a href="#sec-12">12. Fifth commands</a>
-<ul class="nav">
-<li><a href="#sec-12-1">12.1. Compilation & miscellaneous</a></li>
-<li><a href="#sec-12-2">12.2. Conditionals & control flow</a></li>
-<li><a href="#sec-12-3">12.3. Disk & file access</a></li>
-<li><a href="#sec-12-4">12.4. Dynamic memory</a></li>
-<li><a href="#sec-12-5">12.5. Graphics and text</a></li>
-<li><a href="#sec-12-6">12.6. Math, memory & stack manipulation</a></li>
-<li><a href="#sec-12-7">12.7. Dynamic & static strings</a></li>
-</ul>
-</li>
-<li><a href="#sec-13">13. Dynamically loadable modules</a>
-<ul class="nav">
-<li><a href="#sec-13-1">13.1. Keyboard driver</a></li>
-<li><a href="#sec-13-2">13.2. Mouse driver</a></li>
-<li><a href="#sec-13-3">13.3. 2D graphic library</a></li>
-<li><a href="#sec-13-4">13.4. Trigonometry functions</a></li>
-</ul>
-</li>
-</ul>
</div>
-</nav>
-</div></div></div>
-<footer id="postamble" class="">
-<div><p class="author">Author: Svjatoslav Agejenko</p>
-<p class="date">Created: 2020-05-02 Sat 00:04</p>
-<p class="creator"><a href="http://www.gnu.org/software/emacs/">Emacs</a> 26.1 (<a href="http://orgmode.org">Org-mode</a> 9.1.9)</p>
+<div id="postamble" class="status">
+<p class="author">Author: Svjatoslav Agejenko</p>
+<p class="date">Created: 2023-09-19 Tue 18:07</p>
+<p class="validation"><a href="https://validator.w3.org/check?uri=referer">Validate</a></p>
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