Welcome to Stephane's Home page

HP48 hardware upgrading

Working on the internal memory

You will find here a complete hand book explaining all the details on how to upgrade a HP48G to 256K ram! (341k)
(last revision: January 13th 1998)
This document consist of a one page html document with pictures (easier for print purposes).

If you are looking for a more hypertext document, start here (better pictures)!
(last revision: January 13th 1998)

If you think you must do a clean job, here are two interesting pictures! (159k)
(courtesy of Pierre-Michel Ricordel)

You have an HP48G(X) and want more than 256k? Ok, try this document and enjoy 786k of pure ram!!
(Description comming from Stefano Garavaglia and Philippe Teuwen)
(last revision: January 28th 1998)

How to build (or buy) ramcards

Do it yourself, 128k ram card. (51k) (last revision: December 11th 1996)

Commercial page: http://www.cynox.de (was Weidatec)

Check out the (local) FAQ

Upgrade for HP48SX

An interesting (but old) file I wrote once, decribing how to upgrade an HP48SX. There are some explanation why it is difficult to upgrade an HP48GX. In the latter case, I recommend trying to build a ramcard.

Must see page

Elbert Liu's Unofficial Upgrade page is:
http://www.geocities.com/CapeCanaveral/7584/index.html note: this page doesn't exist anymore, you can check the latest version on the internet archive!

Who knows, here's my resume.

Send me an e-mail: grundsch at eurecom.fr (Français, English)

This site has been designed on a Power Computing MacOS compatible

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