MS-DOS
emu2
MS-DOS | emu2 | |
---|---|---|
59 | 5 | |
15,623 | 366 | |
- | - | |
0.0 | 6.4 | |
over 4 years ago | 5 months ago | |
Assembly | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
MS-DOS
- MS-DOS v1.25, v2.0, v4.0 Source Code
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Open Sourcing DOS 4
This 4.0 code contains references to 4.00, though: https://github.com/microsoft/MS-DOS/blob/main/v4.0/src/BOOT/...
- DOS 4.0 Source Code Released Under MIT License
- Why Does Windows Use Backslash as Path Separator?
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ST-DOS
I recently stumbled across the MS-DOS 1.25 and 2.0 source code [1].
[1] https://github.com/microsoft/MS-DOS
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The History of Xenix
“Despite this reduction in scope for MS-DOS 2.0, it did carry many bits of XENIX. The system adopted I/O redirection via less-than and greater-than symbols, piping, a hierarchical directory tree, file handles […]”
The source code for MSDOS 2 is available and the file descriptor stuff appears to be in https://github.com/microsoft/MS-DOS/blob/master/v2.0/source/... and XENIX2.ASM. It stands in contrast to the File Control Block API which MSDOS 1 (née 86-DOS) modeled after CP/M’s API.
- MS-DOS v1.25 and v2.0 is now open-source (2014)
- MS-DOS v1.25 and v2.0 is now open-source
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MS-DOS is now open-sourced
Asynchronous I/O figures in prominently in Windows NT. I was really surprised to see[0]:
Each driver in the chain defines two entry points; the strategy routine and the interrupt routine. The 2.0 DOS does not really make use of two entry points (it simply calls strategy, then immediately calls interrupt). This dual entry point scheme is designed to facilitate future multi-tasking versions of MS-DOS. In multi-tasking environments I/O must be asynchronous, to accomplish this the strategy routine will be called to queue (internally) a request and return quickly. It is then the responsibility of the interrupt routine to perform the actual I/O at interrupt time by picking requests off the internal queue (set up by the strategy routine), and process them. When a request is complete, it is flagged as "done" by the interrupt routine. The DOS periodically scans the list of requests looking for ones flagged as done, and "wakes up" the process waiting for the completion of the request.
I didn't realize that kind of forwarding-looking perspective was going into the design of MS-DOS.
[0] https://github.com/microsoft/MS-DOS/blob/master/v2.0/source/...
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Exploring the Internals of Linux v0.01
>Any others I'm missing?
I would suggest MS-DOS: https://github.com/microsoft/MS-DOS
emu2
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VisiCalc
Emu2 allows to run 8086 software in text mode too, such as Turbo Pascal: https://github.com/dmsc/emu2 But what I'd like would be to have a Sixel backend for the EGA/VGA modes. Then by just using an xterm, ever over OpenSSH, I could run old retro DOS games under that.
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[twm] I improved my android app and made a music player for it :)
Other: XMotd, XV (Image Viewer), Borland C++ 2.0 (using emu2 ), TI PC-Scheme, Hugs98 (Haskell Interpreter)
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How FreeDOS Grew Up and Became a Modern DOS
I've used emu2 to run ancient MASM and the like successfully. https://github.com/dmsc/emu2
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Hacker News top posts: Apr 14, 2021
EMU2: A simple text-mode x86 and DOS emulator\ (22 comments)
- EMU2: A simple text-mode x86 and DOS emulator
What are some alternatives?
86Box - Emulator of x86-based machines based on PCem.
8086tiny - Official repository for 8086tiny: a tiny PC emulator/virtual machine
dosbox-x - DOSBox-X fork of the DOSBox project
XTulator - XTulator is a portable, open source x86 PC emulator currently supporting the 8086 instruction set and 80186 extensions.
Chicago95 - A rendition of everyone's favorite 1995 Microsoft operating system for Linux.
qubes-issues - The Qubes OS Project issue tracker
box64 - Box64 - Linux Userspace x86_64 Emulator with a twist, targeted at ARM64 Linux devices
open-watcom-v2 - Open Watcom V2.0 - Source code repository, Wiki, Latest Binary build, Archived builds including all installers for download.
emularity - easily embed emulators
gcc-ia16 - Fork of Lambertsen & Jenner (& al.)'s IA-16 (Intel 16-bit x86) port of GNU compilers ― added far pointers & more • use https://github.com/tkchia/build-ia16 to build • Ubuntu binaries at https://launchpad.net/%7Etkchia/+archive/ubuntu/build-ia16/ • DJGPP/MS-DOS binaries at https://gitlab.com/tkchia/build-ia16/-/releases • mirror of https://gitlab.com/tkchia/gcc-ia16
em-dosbox - An Emscripten port of DOSBox