Ultimate 1MB (U1MB) Rom Builder Icon

Ultimate 1MB (U1MB) Rom Builder

Rom Builder Utility for Atari 8 bit Ultimate1MB upgrade

5.0 Stars (3)
2 Downloads (This Week)
Last Update:
Download U1MBRomB_win32_v1.0.4.zip
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This utility is used to create/maintain ROM images for flashing to the Ultimate 1MB device. It's main purpose is to customize your U1MB device to your needs.

Ultimate 1MB (U1MB) Rom Builder Web Site


  • Create a new U1MB ROM Image
  • Update an existing U1MB ROM Image
  • Extract individual ROMs from U1MB ROM Image
  • Load individual ROMs to U1MB ROM Image
  • Modify descriptions of individual ROM Images
  • Create an .atr file which contains the flasher software and the ROM Image file for flashing to U1MB
  • Comprehensive Help screen to provide information on U1MB memory mapping and on using the software
  • Multilingual GUI (English, German and Turkish)
  • Supports versions 1 and 2 of U1MB


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User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
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User Reviews

  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    registered an account just to say thank you for this great software, makes flashing the ultimate a breeze..

    Posted 03/04/2013
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    excellent, pro quality software, easy to use and works... did many roms updates with it.. thanks a lot

    Posted 03/01/2013
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Additional Project Details


English, Turkish, German

Intended Audience

Advanced End Users, End Users/Desktop

User Interface

Qt, Windows Aero

Programming Language




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