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Documented other implementations of Lisp 1.5 that I (now) know of.

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Simon Brooke 2025-09-24 17:19:02 +01:00
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README.md
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@ -48,11 +48,20 @@ Because Lisp is the only computer language worth learning, and if a thing
is worth learning, it's worth learning properly; which means going back to
the beginning and trying to understand that.
Because there is, so far as I know, no working implementation of Lisp 1.5
for modern machines.
Because I'm barking mad, and this is therapy.
#### There are other barking mad people out there
Since I wrote Beowulf, I've become aware of other modern reimplementations of Lisp 1.5:
1. [Kenichi Sasagawa's in C](https://github.com/sasagawa888/lisp1.5);
2. [Ichigo Lisp, in JavaScript, which compiles to Web Assembly](https://github.com/zick/IchigoLisp);
3. [Geert Bosch's implementation in ADA](https://github.com/GeertBosch/lisp);
There are probably others.
In addition, [this](https://github.com/informatimago/lisp-1-5) appears to be a transcription of the original IBM 709 card deck for the Lisp 1.5 system. There's an IBM 709 emulator [here](https://github.com/Bertoid1311/B7094) on which it might be possible to actually run this.
### Status
Working Lisp interpreter, but some key features not yet implemented.

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docs/codox/beowulf.bootstrap.html
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docs/codox/intro.html
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@ -45,8 +45,16 @@
<h3><a href="#but-why" id="but-why"></a>BUT WHY?!!?!</h3>
<p>Because.</p>
<p>Because Lisp is the only computer language worth learning, and if a thing is worth learning, it’s worth learning properly; which means going back to the beginning and trying to understand that.</p>
<p>Because there is, so far as I know, no working implementation of Lisp 1.5 for modern machines.</p>
<p>Because I’m barking mad, and this is therapy.</p>
<h4><a href="#there-are-other-barking-mad-people-out-there" id="there-are-other-barking-mad-people-out-there"></a>There are other barking mad people out there</h4>
<p>Since I wrote Beowulf, I’ve become aware of other modern reimplementations of Lisp 1.5:</p>
<ol>
<li><a href="https://github.com/sasagawa888/lisp1.5">Kenichi Sasagawa’s in C</a>;</li>
<li><a href="https://github.com/zick/IchigoLisp">Ichigo Lisp, in JavaScript, which compiles to Web Assembly</a>;</li>
<li><a href="https://github.com/GeertBosch/lisp">Geert Bosch’s implementation in ADA</a>;</li>
</ol>
<p>There are probably others.</p>
<p>In addition, <a href="https://github.com/informatimago/lisp-1-5">this</a> appears to be a transcription of the original IBM 709 card deck for the Lisp 1.5 system. There’s an IBM 709 emulator <a href="https://github.com/Bertoid1311/B7094">here</a> on which it might be possible to actually run this.</p>
<h3><a href="#status" id="status"></a>Status</h3>
<p>Working Lisp interpreter, but some key features not yet implemented.</p>
<ul>
@ -60,7 +68,7 @@
<p>You are of course welcome to fork the project and do whatever you like with it!</p>
<h3><a href="#invoking" id="invoking"></a>Invoking</h3>
<p>Invoke with</p>
<pre><code>java -jar target/uberjar/beowulf-0.3.0-standalone.jar --help
<pre><code>java -jar target/uberjar/beowulf-0.3.1-standalone.jar --help
</code></pre>
<p>(Obviously, check your version number)</p>
<p>Command line arguments as follows:</p>