Dozens of minimal operating systems to learn x86 system programming. Tested on Ubuntu 17.10 host in QEMU 2.10 and real hardware. Userland cheat at: https://github.com/cirosantilli/linux-kernel-modu…

#FreeGEOS source codes. The offical home of the PC/GEOS operating system technology. For personal computing fans. For all developers and assembly lovers. For YOU!

sectorforth is a 16-bit x86 Forth that fits in a 512-byte boot sector.

Code for the 6502 microprocessor, mostly for the Replica 1 computer.

A bare-metal FORTH operating system for Raspberry Pi

Firmware to allow functional testing of ZX Spectrum hardware and related clones. See the wiki for full details.

Disassembly (CA65) of the Commodore 64 port of the seminal space-sim Elite, by Ian Bell / David Braben.

A Forth implementation for the TI-84+ calculator.

LUnix Next Generation - a Little Unix operating system for C64/128/Atari and any 6502-based machine

6502 enhanced BASIC unmodified source

x386 OS developed in Forth

John Jordan's reverse engineering of Frontier: First Encounters.

A benchmark for standard libraries

Code and material related to the PAL-1, a 6502-based SBC similar to the KIM.

forth standalone for 386

Forth compiler written in x86 assembly (inspired by colorForth)

Neuauflage des NDR KLEIN COMPUTER

Mirror of JONESFORTH