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.

Features

  • Divided into three parts: BIOS, Kernel and Command-Line Interface (CLI)
  • User Modifiable Operating System: during boot, the ROM is copied to RAM and the paged out, giving the user total freedom to modify the OS.
  • Use of jumpblocks for Kernel and BIOS subroutines allows easy modifications by just changing 2 bytes to a new address
  • Written in Z80 assembly language
  • Support for TMS9918A VDP, AY-3-8912 PSG, Zilog SIO/2, SD card, Floppy Disk Drive

Project Samples

dzOS in action dastaZ80 Block Diagram

Project Activity

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Categories

Operating System Kernels, Operating Systems, ROMs

License

MIT License

Follow dzOS

dzOS Web Site

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Additional Project Details

Programming Language

Assembly

Related Categories

Assembly Operating System Kernels, Assembly Operating Systems, Assembly ROMs

Registered

2023-10-18
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