Emu48 for Android

Regis Cosnier

About this app

This project ports the Windows application Emu48 written in C to Android.
It uses the Android NDK. The former Emu48 source code (written by Christoph Giesselink) remains untouched because of a thin win32 emulation layer above Linux/NDK!
This win32 layer will allow to easily update from the original Emu48 source code.
It can open or save the exact same state files (state.e48/e49) than the original Windows application!

Some KML files with theirs faceplates are embedded in the application but it is still possible to open a KML file and its dependencies by selecting a folder.

The application does not request any permission (because it opens the files or the KML folders using the content:// scheme).

The application is distributed with the same license under GPL and you can find the source code here:
https://github.com/dgis/emu48android


QUICK START

1. Click on the 3 dots button at the top left (or from the left side, slide your finger to open the menu).
2. Touch the "New..." menu item.
3. Select a default calculator (or "[Select a Custom KML script folder...]" where you have copied the KML scripts and ROM files (Android 11 cannot use the folder Download)).
4. And the calculator should now be opened.


NOT WORKING YET

- Disassembler
- Debugger


LICENSES

Android version by Régis COSNIER.
This program is based on Emu48 for Windows version, copyrighted by Christoph Gießelink & Sébastien Carlier.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Note: some included files are not covered by the GPL; these include ROM image files (copyrighted by HP), KML files and faceplate images (copyrighted by their authors).
The Eric's Real scripts ("real*.kml" and "real*.bmp") are embedded in this application with the kind permission of Eric Rechlin.

Ratings and reviews

(If you're not familiar with HP calculators or RPN, this app is probably not for you). My favourite calc of all time! Im running the 48GX, and it's way better than the original. It's always in my pocket, it hardly ever crashes. If it ever crashes, or if I deleted something, I just load a backup state file. Every time I get myself a new phone, I just copy the the emu48-folder from the old one. Up and running in no time. Setting up from new could be more intuitive, though.

I have used the emu48 for a long time. I have a Samsung Galaxy s23 ultra. Recently, I noticed the equation solver does not work. I get an error message "ERROR: too few arguments." I don't use the equation solver that much anymore. I use the HP50 skins/mode. The example I am using is the loan TVM. Not the one where you fill in the field in full screen, the one where you use the soft keys to input values. The same error happens on Go49Gp. Seems odd. If anyone has thoughts, let me know.

This really is my favorite of all the HP emulators. It took a little time to get used to RPL, but after I got the hang of it, I realized it is on a whole other level from the RPN calculators I grew up with. I've had more fun with Emu48 than any other app I have. Just amazing. Do plan to spend lots of time with the manuals.

What’s new

- Updated source code with Emu48 version 1.66+.
- Fix an USB serial issue with Android 13+ (fix #23).
- Extend the KML MenuItem commands for Android only with: 201 (CUSTOM_PIXEL_BORDER_ON), 202 (CUSTOM_PIXEL_BORDER_OFF), 203 (CUSTOM_PIXEL_BORDER_TOGGLE) (fix #28).