China DOS Union

“DBR boot sector -- must be written entirely in ASM, cannot call any interrupts”
Reading the disk in the MBR still has to use int 13h, that's provided by the BIOS. If you don't use interrupts, are you going to read ports directly?
"640K + XMS"
So it's still a 16-bit operating system? Everybody knows CPUs from the 386 to the P4 are all 32-bit. Using a 16-bit operating system not only wastes CPU functionality for nothing, but also can't make use of protected mode to implement multiprocessing. Although 32-bit registers can be used in 16-bit mode, the efficiency is completely lower than in 32-bit state. As for XMS, that can be said to be a memory patch MS had no choice but to add to DOS.
There is no meaning at all in making a 16-bit operating system.

I sincerely hope for the real birth of a new DOS. How about naming it NewDOS,

Actually, what should be developed is an operating system that can load Chinese fonts

The idea is very good, but there's no money! Right now I don't even have a decent machine, so how can I do it???????????????
Are you willing to sponsor me????????????????

Following this... ....

For a new OS, there has to be something new about it, otherwise the old one works just fine. Everyone can talk about their views on the OS of the future.
I think it should develop multitasking and multi-user features, strengthen networking, and in particular make the old 386, 486, and P3, P4 form a new kind of computer, so that every user feels they are using a P4, while the OS assigns tasks reasonably among the 386, 486, P3, and P4, fully making use of existing and future devices (not applications as inefficient as terminals).

I've only been writing software for a short time, but I'm very interested in OSes.
I think I'm still very weak compared with all you experts.

But I still have confidence......
Count me in
QQ:19775776

Wasn't there someone last time who stole MS's DOS code and leaked it?

Great! Then let's quickly set up a development team and get moving!

I oppose making a DOS for Chinese people only. Instead, it should follow the I18N+I10N standards and develop an internationalized DOS system with kernel-level support for international language display/input (including Chinese, of course). When the system starts, it would read in a full international language font library based on the ISO10646/UNICODE4.0 standard, start an input engine (for keyboard character mapping, input method interfaces, etc.), start drivers, communication protocols, SHELL (COMMAND.COM) ......

I think that if we establish an organization and use an open-source and free approach, then after designing the structure of NewDOS based on DOS, first make a dedicated development tool, then make a simple microkernel, set some development standards, write a basic system that can actually run, and preferably also develop (or port) a high-level language, then we could apply to the state for R&D funding or pull in some sponsorship, and continue developing graphical support (for desktop applications such as OFFICE\video\artwork, this is necessary). As long as we get past the initial stage, it shouldn't be too hard to keep it going.

System development should use an open-source and free model, while application development should use a commercial operating model. Then programmers developing software for this NEWDOS won't have to worry about having no way to make a living. GNU/LINUX places too much emphasis on being free, WINDOWS is too closed, and the various UNIX systems and FreeBSD are too huge and complicated, unsuitable for ordinary people's daily use.

I have the source code for ms dos 6.22, it's the full version
It's 60M in size

Brother above, can you give me a copy of your code?
Thanks!

Brother in post #26, could you give me a copy too? Or a link, thanks.

GNU/LINUX places too much emphasis on being free

free means libre not gratis

New here! I heard that brother joeguan2 above has the dos 6.22 source code? Could you provide a copy? Or a link would do too! Thanks!
pengod@sina.com