The Zeal Operating System is a modernized fork of the 64-bit Temple Operating System, TempleOS.
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Website

ZealOS

The Zeal Operating System is a modernized, professional fork of the 64-bit Temple Operating System. Guiding principles of development include transparency, full user control, and adherence to public-domain/open-source implementations.

ZealOS strives to be simple, documented, and require as little of a knowledge gap as possible. One person should be able to comprehend the entire system in at least a semi-detailed way within a few days of study. Simplify, don't complicate; make accessible, don't obfuscate.

The CIA encourages code obfuscation. They make it more complicated than necessary.
—Terry A. Davis

Features in development include:

  • Fully-functional AHCI support
  • 32-bit color VBE graphics
  • Network card drivers and a networking stack

Changes include:

  • 60 FPS
  • VBE graphics with variable resolutions
  • 440Hz 'A' tuning changed to 432Hz
  • HolyC -> CosmiC
  • System-wide renaming for clarity
  • Removed shift-space mechanism
  • Reformatted code for readability
  • Added comments and documentation

Getting started

Prerequisites

  • For running in a VM: Intel VT-x/AMD-V acceleration enabled in your BIOS settings. (Required to virtualize any 64-bit operating system properly.)
  • Working knowledge of the C programming language.

Every commit contains a "ZealOS-YYYY-MM-DD-HH_MM_SS.iso" in the root of master, which is a timestamped ISO build of that commit.

This is basically a read-only repository. Everything happens inside the OS, as intended by Terry. After you've installed the latest release in a VM, you can make changes to the source. Once you've made your changes, you can make copies of the relevant files and put them into a folder, along with some kind of notes as to what you've done either as a DolDoc document or in the pull request later. You can then make a RedSea ISO file out of that folder by running RedSeaISO("MyChanges.ISO", "/Home/Folder");. Export the contents of the VM hard drive in whatever OS-specific way you have to (there are scripts in the root of the repo), grab the ISO, and send it; a pull request attachment with the zipped ISO would work fine.

Background

In around November of 2019, Z3N1THM4N decided to create ZenithOS to continue Terry's work in a direction that would make it a viable operating system while still keeping the innovative and divine-intellect ideas and design strategies intact.

At first, development occurred exclusively inside a VM and ISOs were occasionally generated as official releases. It was scrapped and restarted from scratch.
Releases of the "old" ZenithOS are currently archived on the mega.nz website:

The repository was removed in August of 2020, and reuploaded to ZenithOS. The latest archived front page, master.zip, and related links can be found on archive.org.

In July of 2021, ZealOS was forked from ZenithOS.

Screenshots

System Report, Z Splash and AutoComplete, with Stars wallpaper

32-bit color!