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April 17, 2024

R I P of the day

Kouyaté Sotigui (b. 1936-07-19 / d. 2010-04-17)

He was one of the first Burkinabé actors. He was the father of film director Dani Kouyaté and was a member of the Mandinka ethnic group.

Looking for PPS4 spider chips? There you go!

Who said that a Gottlieb system 1 CPU board was irreparable?

Some good news in 2022, at last. You can get new, fresh, and robust clones of almost any Rockwell PPS4 device, such as A1752 or A1753 ROM/RAM/IO devices, or any A17xx actually.

PPS4 devices, also called spider chips, were components of the PPS4 system or PPS4/2 system. PPS4 was an ingenious system that was designed by Rockwell in the 70's. Spider chips are now very rare, if not completely impossible to find.

Among others, Gottlieb's pinballs of the early 80's are operated by spider chips.

Their CPU board is called System 1.

You can get them from pps4.fr

This is confine time. let's play with Columbo

Is Popcorn a modern version of ancient bergamasques?

ECM Factorization. Download our free command line tool (64-bits)

We implementated our own version of Lenstra's elliptic curves method. We make use of python's multiprocessing module to try multiple curves at the same time and we are using gmpy2 for fast arithmetic computations.

The biggest number we factor so far is rsa-79 from Paul Zimmermann's challenges.

Currently, you can get a command line WIN64 through our installer that you can get below

Win 64-bit version here:
setup_ecmpy-amd64.exe (4.5MB, downloaded 577 times).

Send an email to phd@aa55.fr for any comment or suggestion.

Enjoy! And feel free to share and report any champion value you may find.

BOGGLE: A gift from AA55 consulting for decently burying 2015
(and forget about it asap)

Please download and check out our free and superlative BOGGLE game. It is a windows remake of the famous BSD game of the same name (WIN32 build)

Be careful, it looks like a small and innocent thing. It finally appears to be rather addictive and will probably lower your productivity. You are warned!

boggle_setupx32V0_1.exe (7MB, downloaded 595 times).

Lsystem3DX: A gift from AA55 consulting

Please download and check out our L-system editor and displayer. It is a GUI for drawing L-systems (WIN32 build)

NOW a 3D version. Versions after 0.8 include contextual l-systems. There is also a fix in the scene lightening in the opengl window. Latest version can be downloaded here:

setuplsystemV0_9.exe (15MB, downloaded 1168 times).

Please, note that you will need to uninstall manually any older version than 0.9.

Your PC may complain about the fact that this executable is not often downloaded, which is the truth actually. But we don't agree with it when it says that it might harm your computer. To force execution you will have to look for the right button somewhere on the window. Though not recommended, an older version can be downloaded here:

lsystem3D-0.7-win32.msi (23MB, downloaded 1102 times).

You will be able to download the next release very soon. Keep looking at this page regularly.

This program was written in Python. A commercial version is available for building STL files. Send an email to lsystem@aa55.fr to get conditions and download details of the unlocked version.

lsystem is a graphical user interface for drawing L-system images.

An L-system consists of an alphabet of symbols that can be used to make strings, a collection of production rules that expand each symbol into some larger string of symbols, an initial "axiom" string from which to begin construction, and a mechanism for translating the generated strings into geometric structures. L-systems were introduced and developed in 1968 by Aristid Lindenmayer.

And below the result "in real life" after 3D-printing the corresponding STL file:

On demand, by email, you can even get a corresponding STL file that will allow you to 3D-print your L-system

Play gounki

Please try this unique gounki game by clicking here. You can play 2 players or against a robot.

Please note that the game only works when our personal server is on-line, which is rarely the case.

Please, also note that the game is a work in progress, and currently does not work on Microsoft IE.

To learn how to play, please refer to the following site about Gounki : here


In November, 2007, the deadabase contained 1330 entries

In February, 2008, there were 1690 entries

In February, 2009, there were 2900 entries

In February, 2014, there were 3900 entries

In February, 2020, I made a mistake and dropped the entire table. I almost decided to give it up. Actually there were very few backups to be honest. The lockdown occurred nearly at the same time. I eventually found an acceptable backup from 2015 :-( with about 4000 entries. Well OK I will connect the dots. I learned a lot about myself with this misadventure. Please give me some time to reenter data between 2014 and 2020.


The definition of 'garzol' is here

Taboo of the inside and taboo of the outside "Sur les Docks"

You will find here a translation of an interesting broadcast I listened to on 3/17/2008.

France Culture "Sur les Docks" about taboos With : Serge Lesourd et Marie-Frédérique Bacqué, psychanalystes ; David Le Breton et Thierry Goguel d’Allondans, anthropologues ; Yves de Peretti, cinéaste, et Patrick Banon, chercheur en sciences des religions. Lectures : Lionel Prevel Productrice coordonnatrice : Irène Omélianenko Producteur délégué : Christophe Deleu Réalisation : François Teste

A casual aphorism to think of

Un DSI, c'est quelqu'un qui va parler business aux informaticiens, et qui va parler informatique aux gens de l'entreprise.

J-P Corniou March 28, 2008 on France Culture.


Definition of the word "GARZOL".
Based on poppycock