Zeptux

NOTE: Zeptux is on hold for the time being as I am busy working on the memory management book. I plan to return to it at a later date.

Zeptux is an in-development, opinionated, UNIX-like kernel which may or may not target POSIX conformity.

It is, rather unfashionably, implemented in C and assembly.

It is released under an MIT license.

Roadmap

Next steps

• Implement interrupt handler and enable interrupts.
• Page fault handling.
• Implement interrupt-driven serial port interface for early kernel I/O.
• Implement kernel ring buffer (outputting to serial interface to start with).
• Implement virtual file system support.
• Implement correct, possibly trivial disk I/O driver.
• Implement processes both userland and kernel.
• Implement scheduler.
• Load init userland process.
• Add basic system calls.
• Implement trivial shell.

Usage

Make sure you have gcc, binutils, python 3, go and qemu installed.

Building

$ ./build

Emulation

To run under qemu:

$ ./build qemu

To run under qemu using a graphical output:

$ ./build qemu-vga

Tests

To execute all tests, run:

$ ./build test

This will generate a test kernel image which will then be executed under qemu.

Docs

• Design concepts - a rough draft document on zeptux design concepts.

• Memory map - a description of the physical and virtual memory maps within zeptux.