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Credit goes to sourceforge.net

Browse free open source Assembly ROMs and projects below. Use the toggles on the left to filter open source Assembly ROMs by OS, license, language, programming language, and project status.

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  • 1
    EmuTOS

    EmuTOS

    Free operating system for Atari computers, and more.

    EmuTOS is a TOS compatible operating system for Atari ST series computers, and more. It is made from Digital Research's GPLed original sources and is a free and open source alternative to Atari proprietary ROMs.
    Leader badge
    Downloads: 800 This Week
    Last Update:
    See Project
  • 2

    C-BIOS

    C-BIOS is an open source BIOS for MSX computers.

    C-BIOS is an open source BIOS for MSX computers. C-BIOS can be shipped with MSX emulators so they are usable out-of-the-box. This project aims to improve C-BIOS by fixing incompatibilities with the MSX BIOS and the development of a Disk ROM.
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    Downloads: 55 This Week
    Last Update:
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  • 3
    A free replacement firmware for the T/S 2000 derived from the T/S 1000 ROM.
    Downloads: 6 This Week
    Last Update:
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  • 4
    Cambridge Z88

    Cambridge Z88

    Software development for 4Mb portable, using Z80 CPU and AA batteries

    This project is for the portable computer "Cambridge Z88", produced by Sir Clive Sinclair (of ZX Spectrum fame). We continue to support software development (ROM, 3rd party apps on memory cards and desktop applications). We have moved to https://cambridgez88.jira.com/wiki (development, source code and documentation). However, we continue to publish files for download here.
    Leader badge
    Downloads: 14 This Week
    Last Update:
    See Project
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  • 5
    Another Kernel
    A kernel for your device
    Downloads: 1 This Week
    Last Update:
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  • 6
    Sources of various MSX systems ROMS. The project aims at a complete commented assembly source file.
    Downloads: 1 This Week
    Last Update:
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  • 7

    dzOS

    A single-user single-task ROM-based OS for my 8-bit homebrew computer

    dzOS is a single-user single-task ROM-based operating system (OS) for my 8-bit homebrew computer dastaZ80, which runs on a Zilog Z80 processor. It is influenced by ideas and paradigms coming from Digital Research’s CP/M, but also from 8-bit computers of the 80s era.
    Downloads: 0 This Week
    Last Update:
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