Fixes in 2006 html files and some of 2011
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@@ -502,8 +502,17 @@ two files on A: drive, <code>HALT.COM</code> to stop the emulator (so it closes
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by the provided C.BIOS.</p>
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<p>To get a complete <a href="https://en.wikipedia.org/wiki/CP/M">CP/M</a> system, you will need the following files
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from the <code>SOURCE</code> directory:</p>
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<pre><code> ASM.COM DDT.COM DUMP.COM ED.COM LOAD.COM
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PIP.COM STAT.COM SUBMIT.COM XSUB.COM</code></pre>
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<ul>
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<li><code>ASM.COM</code></li>
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<li><code>DDT.COM</code></li>
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<li><code>DUMP.COM</code></li>
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<li><code>ED.COM</code></li>
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<li><code>LOAD.COM</code></li>
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<li><code>PIP.COM</code></li>
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<li><code>STAT.COM</code></li>
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<li><code>SUBMIT.COM</code></li>
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<li><code>XSUB.COM</code></li>
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</ul>
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<p>To import them, you must run the emulator with an argument, by
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example:</p>
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<pre><code> ./toledo2 DDT.COM</code></pre>
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@@ -530,15 +539,26 @@ bit 2) and <code>C</code> (Carry, bit 0).</p>
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<h3 id="porting-it">Porting it</h3>
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<p>It is easy if your platform has <code>getch()</code>/<code>kbhit()</code> and
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ANSI terminal:</p>
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<pre><code> read --> Z=kbhit()?getch():0
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write --> putchar(7[o])
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system --> nothing</code></pre>
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<ul>
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<li><code>read</code>
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<ul>
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<li><code>Z=kbhit()?getch():0</code></li>
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</ul></li>
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<li><code>write</code>
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<ul>
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<li><code>putchar(7[o])</code></li>
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</ul></li>
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<li><code>system</code>
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<ul>
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<li>nothing</li>
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</ul></li>
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</ul>
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<p>Notice that you’ll have to do <code>#include <conio.h></code> as well.</p>
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<p>Also add the following to trap Ctrl-C:</p>
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<pre><code>#include <signal.h>
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signal(SIGINT, SIG_IGN);</code></pre>
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<p>NOTE: this is what the <a href="#alternate-code">alternate code</a> is for!</p>
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<p>NOTE from the judges: in Unix like systems <code>getch()</code> is part of curses but this
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<pre><code> #include <signal.h>
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signal(SIGINT, SIG_IGN);</code></pre>
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<p><strong>NOTE</strong>: this is what the <a href="#alternate-code">alternate code</a> is for!</p>
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<p><strong>NOTE from the Judges</strong>: in Unix like systems <code>getch()</code> is part of curses but this
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is not what is needed.</p>
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<p>On PC/DOS you need to add <code>ANSI.SYS</code> to <code>CONFIG.SYS</code>.</p>
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<p>In Unix the min 0 on <code>stty</code> is required but circa 2001
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@@ -555,25 +575,98 @@ counter</a> is the <code>c</code> pointer and
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main loop reads every <a href="https://en.wikipedia.org/wiki/Opcode">opcode</a> and
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separates them in one of three common forms. A lot of ternary operators selects
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the instruction.</p>
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<pre><code> o[0] = B register o[1] = C register
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o[2] = D register o[3] = E register
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o[4] = H register o[5] = L register
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o[6] = Flags o[7] = A or accumulator</code></pre>
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<ul>
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<li><code>o[0]</code>
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<ul>
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<li>B register</li>
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</ul></li>
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<li><code>o[1]</code>
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<ul>
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<li>C register</li>
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</ul></li>
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<li><code>o[2]</code>
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<ul>
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<li>D register</li>
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</ul></li>
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<li><code>o[3]</code>
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<ul>
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<li>E register</li>
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</ul></li>
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<li><code>o[4]</code>
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<ul>
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<li>H register</li>
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</ul></li>
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<li><code>o[5]</code>
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<ul>
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<li>L register</li>
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</ul></li>
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<li><code>o[6]</code>
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<ul>
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<li>Flags</li>
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</ul></li>
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<li><code>o[7]</code>
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<ul>
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<li>A or accumulator</li>
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</ul></li>
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</ul>
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<p>The following instructions do peripheral operation:</p>
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<pre><code> 76 Quits emulator
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DB 00 Reads key pressed status
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DB 01 Reads key
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DB 02 Reads byte from file (Carry=EOF)
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D3 xx Writes byte from acc. to console
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ED ED 02 Reads sector
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ED ED 03 Writes sector</code></pre>
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<ul>
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<li><code>76</code>
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<ul>
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<li>Quits emulator</li>
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</ul></li>
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<li><code>DB 00</code>
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<ul>
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<li>Reads key pressed status</li>
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</ul></li>
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<li><code>DB 01</code>
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<ul>
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<li>Reads key</li>
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</ul></li>
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<li><code>DB 02</code>
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<ul>
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<li>Reads byte from file (Carry=EOF)</li>
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</ul></li>
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<li><code>D3 xx</code>
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<ul>
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<li>Writes byte from acc. to console</li>
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</ul></li>
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<li><code>ED ED 02</code>
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<ul>
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<li>Reads sector</li>
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</ul></li>
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<li><code>ED ED 03</code>
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<ul>
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<li>Writes sector</li>
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</ul></li>
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</ul>
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<p>Memory addresses:</p>
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<pre><code> FBFA = Low source/target direction
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FBFB - High source/target direction
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FBFC - Sector
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FBFD - Low cylinder
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FBFE - High cylinder
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FBFF - Drive.</code></pre>
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<ul>
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<li><code>FBFA</code>
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<ul>
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<li>Low source/target direction</li>
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</ul></li>
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<li><code>FBFB</code>
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<ul>
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<li>High source/target direction</li>
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</ul></li>
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<li><code>FBFC</code>
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<ul>
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<li>Sector</li>
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</ul></li>
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<li><code>FBFD</code>
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<ul>
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<li>Low cylinder</li>
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</ul></li>
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<li><code>FBFE</code>
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<ul>
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<li>High cylinder</li>
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</ul></li>
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<li><code>FBFF</code>
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<ul>
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<li>Drive.</li>
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</ul></li>
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</ul>
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<p>The BIOS is tailor made for this emulator, and helps to simplify it.</p>
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<h3 id="other-notes">Other notes</h3>
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<ul>
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