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HP All-in-1 Graphing Calculator Emulator

This emulator package uses the Emu48 Engine, a freeware for Windows 9x, ME, NT, 2000 and XP provided by Christoph Giesselink of GERMANY. The engine makes use of the original ROM Calculator, that can be extracted from the Calculator to run. We have package it to toggle between:


  • HP 38G
  • HP 39G
  • HP 48G
  • HP 49G
  • HP 50G



However, this pre-pack Emu48 needs a ROM image to work. Because of licensing reasons govern by HP, ROM's aren't included, but they can be downloaded on several other sites.

Google for these files and drop them into this ROM folder.

  • ROM.38G (HP38-A 1995) for HP38g Emulator.
  • ROM.39G (HP39-A 2000 Beta No. 1.36) for HP39g Emulator.
  • ROM.48G (HP48-R 1993) for HP48g Emulator.
  • ROM.49G (HP49-C 2006 Revision 2.09) for HP49g Emulator and HP50g Emulator.

Possible links...

In general all HP-ROM files are copyrighted by Hewlett Packard. But since year 2000, HP allowed the use of the HP38, 39, 40, 48, 49 ROM's even if you're not an owner of this calculator type.


How can I make a dump of my HP Calculator ROM? Emulators for the HP48 generally require an image of your HP's Graphic Calculator internal ROM, also known as a "ROM Dump". You can search the internet to download these extraction software.

⇩ Download - File Size = 2MB KB

Unzip the content into c:EMU48 folder and the double click EMU48.exe to run the program and select the KML Script:


If you see this error message "This KML Script doesn't specify the ROM to use, or the ROM could not be loaded. Press Cancel to Abort." Then you have not properly install the ROM image. Remember to put the ROM images into the folder C:\EMU48\ROM.

Updated On: 15.07.08

  1. On 14-Aug-2016, Ronn! Blankenship wrote: 
    Hi! Just discovered this page and it's the only version of the emulator I've been able to get to work. I still have my actual HP-48GX, and would like the emulator to look like the real thing instead of with pink and baby blue text and such. (Sorry if anyone prefers that look!) I've come across some realistic skins elsewhere but apparently don't know where to put the .kml files or did something else wrong. Can you point me to some help on this? Thanks!
    Your reply to Ronn! Blankenship

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