proteanthread

intel80tools

Reconstruction of intel 8080 tool chain inc. PLM80, ASM80, LINK80, LOC80, LIB80 and ISIS 4.1

cpmish

An open source sort-of CP/M 2.2 distribution.

doslinux

Run Linux programs on DOS

NetBSD

Automatic conversion of the NetBSD src CVS module, use with care

OxygenBasic

BASIC compiler. Run programs directly, or compile to 32/64 bit binary. Supports C headers and assembly code. Supports Unicode source scripts.

pettil

6502 Forth-83 dialect for the Commodore PET 2001

VolksForth

volksFORTH is a 16bit Forth System maintained by the German Forth Gesellschaft e.V.

Z

:white_flower: Header-only multi-platform general purpose library

basicode-interpreter

BASICODE interpreter in Javascript

blog

retrohunblog

c64ref

Ultimate Commodore 64 Reference: ROM Disassembly, Memory Map, ...

code.mil

An experiment in open source

diskcopy

copy one disk or image file to an other

edlin

FreeDOS standard line editor

emu2

Simple x86 and DOS emulator for the Linux terminal.

fdisk

Fixed disk tool - create partitions.

fdpp

FreeDOS plus-plus, 64bit DOS

GW-BASIC-1

The original source code of Microsoft GW-BASIC from 1983

help

FreeDOS commands and usage information

HimemX

DOS extended memory (XMS) server

Jemm

Jemm386 and JemmEx are socalled EMMs ( Expanded Memory Managers ) or, more exactly, V86 monitors.

Mad-Pascal

mem

Displays the amount of used and free memory in your system.

pce

Emulates Mac Plus, PC, & Atari ST in asm.js

pearpc

PearPC - PowerPC Architecture Emulator

pforth

Portable Forth in C

shsucd

Suite of DOS programs dealing with the CD-ROM.

squirrel

Official repository for the programming language Squirrel

xv6-public

xv6 OS

yabasic

Yabasic - A simple Basic interpreter for Unix and Windows.