interesting links2024-02-26T10:26:21+01:00https://roland.iwasno.net/links/https://roland.iwasno.net/links/https://roland.iwasno.net/links/GitHub - brouhaha/nonpareil: microcode-level simulation of HP calculatorshttps://roland.iwasno.net/links/?vNgRQQ2024-02-26T10:26:21+01:00In this release, the following calculators are simulated:<br />
Classic series: 35, 45, 55, 80<br />
Woodstock series: 21, 22, 25, 27<br />
Spice series: 31E, 33C, 34C, 37E, 38E, 38C<br />
Nut series: 41CV, 41CX<br />
Voyager series: 11C, 12C, 15C, 16C<br />
<br />
Modified Voyager: 15X (more RAM)<br>(<a href="https://roland.iwasno.net/links/?vNgRQQ">Permalink</a>)Jovial RPN - Reverse Polish Notation Calculatorshttps://roland.iwasno.net/links/?dg2Rpw2023-03-24T14:24:41+01:00Simulators for the hp15c and hp16c calculators, can be used in the browser or as Android app(lication).<br>(<a href="https://roland.iwasno.net/links/?dg2Rpw">Permalink</a>)RTC Calibration program - SwissMicros Calculator Forumhttps://roland.iwasno.net/links/?M2Ayzg2022-06-13T15:58:37+02:00Program to determine the calibration value needed to correct for the frequency error of dm42s' RTC.<br>(<a href="https://roland.iwasno.net/links/?M2Ayzg">Permalink</a>)free42 Random Math Stuffhttps://roland.iwasno.net/links/?3MwYDw2022-06-13T15:52:20+02:00Polynomial root finder for {dm,hp}42s using Laguerre's method. Found on <a href="https://forum.swissmicros.com/viewtopic.php?p=20091#p20091" rel="nofollow">https://forum.swissmicros.com/viewtopic.php?p=20091#p20091</a><br />
The Emacs tools for {dm,hp}42 code on <a href="https://richmit.github.io/hp42/hp42s-meta.html" rel="nofollow">https://richmit.github.io/hp42/hp42s-meta.html</a> and the<br />
Lisp library <a href="http://www.mitchr.me/SS/mjrcalc/" rel="nofollow">http://www.mitchr.me/SS/mjrcalc/</a> look interesting too.<br>(<a href="https://roland.iwasno.net/links/?3MwYDw">Permalink</a>)txt2raw.pl: HP-42S program listing to "raw" conversionhttps://roland.iwasno.net/links/?Tf5LIQ2021-03-05T14:47:58+01:00Perl program to convert {dm,free,HP}-42 programs from textual representation to raw files which can be loaded into {dm,free}42.<br>(<a href="https://roland.iwasno.net/links/?Tf5LIQ">Permalink</a>)Free42 : An HP-42S Calculator Simulatorhttps://roland.iwasno.net/links/?p0-MXA2019-01-20T23:17:37+01:00Free42 is a re-implementation of the HP-42S Scientific Programmable Calculator and HP-82240 Printer. <br />
It is a complete rewrite, not using any HP code. It does not require an HP-42S ROM image. <br />
Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.<br>(<a href="https://roland.iwasno.net/links/?p0-MXA">Permalink</a>)start [HP Calculator Wiki]https://roland.iwasno.net/links/?uHsjUQ2018-11-19T13:56:45+01:00This wiki was originally created to be a development home for repurposing the HP-20b calculator, but has since grown to support several repurposing projects. It is our hope that this grass-roots approach to calculator hacking will expand to include other many HP calculator models and open-source projects.<br>(<a href="https://roland.iwasno.net/links/?uHsjUQ">Permalink</a>)DM42https://roland.iwasno.net/links/?XONTnA2018-02-12T17:17:28+01:00Example programs, (off) images and photos of the internals of the SwissMicros DM42 calculator.<br>(<a href="https://roland.iwasno.net/links/?XONTnA">Permalink</a>)cloudycat / hoppi — Bitbuckethttps://roland.iwasno.net/links/?3kIORA2013-11-30T17:15:41+01:00Hoppi is an application for MacOSX to allow communication with<br />
HP48/49/50 series calculators using the Kermit file transfer protocol.<br />
It supports both USB and RS232 calculator ports.<br />
Hoppi is implemented in Clozure Common Lisp.<br>(<a href="https://roland.iwasno.net/links/?3kIORA">Permalink</a>)RPN calculatorshttps://roland.iwasno.net/links/?7QNc_A2013-11-15T15:51:14+01:00Interesting page about HP calculators, including tips to check the battery on the hp15c LE, example programs and more.<br>(<a href="https://roland.iwasno.net/links/?7QNc_A">Permalink</a>)Elliptic integrals of 1st and 2nd kind calculated by complex agmhttps://roland.iwasno.net/links/?nA4evQ2013-06-29T23:18:25+02:00An interesting algorithm for calculating complete elliptic integrals.<br />
Alas, the link no longer works on 2020-03-10.<br>(<a href="https://roland.iwasno.net/links/?nA4evQ">Permalink</a>)SwissMicros.comhttps://roland.iwasno.net/links/?ml7-2Q2012-11-28T09:54:36+01:00The world's smallest programmable RPN calculators ever. The complete family DM-11, DM-12, DM-15 and DM-16.<br>(<a href="https://roland.iwasno.net/links/?ml7-2Q">Permalink</a>)Virtual Pickett N600-ES Slide Rulehttps://roland.iwasno.net/links/?PIcaeg2011-10-07T22:58:38+02:00A slide rule which can be used in a web browser.<br>(<a href="https://roland.iwasno.net/links/?PIcaeg">Permalink</a>)Some badly conditioned matrices to test the accuracy of determinant calculations.https://roland.iwasno.net/links/?4-HxqQ2011-10-07T12:42:32+02:00(<a href="https://roland.iwasno.net/links/?4-HxqQ">Permalink</a>)HP-15C web-simulatorhttps://roland.iwasno.net/links/?yyWbhg2011-09-18T01:45:46+02:00Web-based simulator of the hp15c calculator. Enhanced version with stack display. Note that contrary to emulators such as nonpareil, this simulator does not produce the same results as the real hp15c.<br>(<a href="https://roland.iwasno.net/links/?yyWbhg">Permalink</a>)ND1https://roland.iwasno.net/links/?MwxHfA2011-07-25T15:27:24+02:00RPL-based calculator for iPhone, an Android version has been announced.<br>(<a href="https://roland.iwasno.net/links/?MwxHfA">Permalink</a>)HP28 with transparent casehttps://roland.iwasno.net/links/?1yDxCw2011-07-21T15:55:58+02:00Might be useful when disassembling an HP28.<br>(<a href="https://roland.iwasno.net/links/?1yDxCw">Permalink</a>)emu71 Pagehttps://roland.iwasno.net/links/?CSg3kA2011-07-21T14:00:15+02:00Emulator for the HP71B, running under DOS.<br>(<a href="https://roland.iwasno.net/links/?CSg3kA">Permalink</a>)HP 28S: shucking the clamshell, further. Book?https://roland.iwasno.net/links/?8ZK8Zg2011-07-19T14:54:45+02:00Some pictures and text about opening an HP 28S.<br>(<a href="https://roland.iwasno.net/links/?8ZK8Zg">Permalink</a>)RPN-CALC DM-15CChttps://roland.iwasno.net/links/?u6Og_g2011-07-12T20:08:44+02:00A credit-card sized clone of the legendary hp-15c calculator developed in Switzerland. First units have been shipped early February 2012. A version to emulate the hp-16c is planned. Also known as <a href="http://www.swissmicros.com/" rel="nofollow">http://www.swissmicros.com/</a>.<br>(<a href="https://roland.iwasno.net/links/?u6Og_g">Permalink</a>)Scientific web calculatorhttps://roland.iwasno.net/links/?-dojYA2009-04-15T18:30:07+02:00Web calculator implemented in JavaScript. Implements arbitrary precision, plotting, prime testing, polynomial roots, matrix arithmetic and very limited (polynomials) symbolic integration. Written by Fabrice Bellard, who also wrote TinyCC, QEmacs, FFMPEG, QEMU and more: <a href="https://bellard.org/" rel="nofollow">https://bellard.org/</a><br>(<a href="https://roland.iwasno.net/links/?-dojYA">Permalink</a>)Bring Back the HP 15Chttps://roland.iwasno.net/links/?e-_UcA2007-06-11T19:00:49+02:00A petition to bring back the HP15C scientific calculator. Note that HP produced the limited edition of the HP 15C (2011?)<br>(<a href="https://roland.iwasno.net/links/?e-_UcA">Permalink</a>)