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bellardos

An experimental OS written for an x86 architecture. This OS currently supports several devices, memory management, paging, and cooperative multitasking. Driver support includes PS2 Keyboard, Serial, VGA, and more.

cgame

cosmodoc

The semi-complete teardown of Cosmo's Cosmic Adventure.

cosmore

A reconstruction of the source code of Cosmo's Cosmic Adventure.

duke2reconstructed

Reconstructed source code of the game Duke Nukem II

freegem-xm

FreeGEM/XM - FreeGEM desktop for DOS with multitasking

imm-dos-nx

A toy protected-mode, multitasking OS for x86, designed for running DOS programs in virtualized environments

lib-modula-pmos2

PMOS/2 is a set of Modula-2 modules designed to be used in conjunction with the OS/2 operating system. It is, in fact, an OS/2 port of the PMOS library, which is a programmer's library for writing multitasking software either under DOS or in embedded systems where there is no operating system.

mdos4-tools

Repository for tools to be used in Multitasking MS-DOS 4.0

mscreen

Multitasker for MS DOS.

multitasking-kernel-for-dos

A multitasking kernel, with synchronization construct (semaphores), made in TurboC for MS-DOS

multitasking_in_dos

Multitasking in MS-DOS

multitasking_kernel-dos_assembly-x86

The following Kernel written in x86 assembly allows non-preemptive multitasking on DOS in which there was no concept of threads and multitasking. This assembly code uses advantage of TSR(Terminate and stay resident) and ISR (interrupt service routine) of DOS to make it happen. The kernel maintains a PCB(Process Control Block) and allows Addition an

neko98

Neko for Windows is a little white cat who runs around on the desktop and chases the mouse cursor.

opengem

OpenGEM is a non-multitasking 16-bit graphical user interface (GUI) for DOS. It is an extended distribution of FreeGEM that includes features of the original Digital Research GEM. Learn more here: http://www.opendawn.com/opengem/

projectsos

SOS (Save Our System) is custom 32-bit multitasking operating system. The MS-DOS like OS is written in C and some Assembly. It supports process scheduling, system calls, inter-process communication through mailboxes and message queues, and process synchronization through semaphores

rafos_multitasking

Support for multitasking on RAF Operating System (RAF_OS), simple, educational, DOS-like operating system.

turbix

A Multitasking kernel with preemptive scheduling running on DOS

win16

osFree Windows Kernel for osFree Win16 Personality

x86_preemptive_multitasking_kernel

Implementation of x86 Kernel with all basic concepts of OS (written in Borland C++ and assembly, hosted on DOS VM).