In what language was MSDOS originally written in?

Posted by nebukadnezzar on Stack Overflow See other posts from Stack Overflow or by nebukadnezzar
Published on 2010-05-26T10:54:43Z Indexed on 2010/05/26 11:01 UTC
Read the original article Hit count: 298

Filed under:

pascal

In what language was MSDOS originally written in?

The Wikipedia Article implies either C, QBasic or Pascal, but: * C was invented to write UNIX, so I don't believe it was used to write MSDOS * Pascal seems popular to teach programming, but not really popular to write Operating systems in * QBasic didn't seem to be very popular for Operating Systems at the time MSDOS was developed (or was *BASIC ever very popular to write Operating Systems in it?)

Except these three languages there is also Assembly, but I assume that Microsoft already switched from Assembly to a "higher" level language?

Since C was originally invented for UNIX, I still wouldn't think Microsoft is using C... although the Microsoft API is written in C (I find this kind-of oxymoronic, actually).

Can anyone enlighten me on this topic?

Related posts about ms-dos

MSDOS "Hello World" EXE

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, An open question - but I cant find anywhere to start!! I want to compile a "Hello World" MS-DOS exe. Not a program that runs in 16bit mode, or in MSDos mode on top of Windows OSs. A HELOWRLD.EXE that I can run on my MSDOS box. Thanksyou! >>> More
How to install Windows 7 from MS-DOS?

as seen on Super User - Search for 'Super User'
Before, I can copy Windows XP CD contents to D:\windowsxp, then Boot DOS CD format C: /s /q D:\windowsxp\i386\winnt.exe How to install Windows 7 from MS-DOS? I found install from USB only. >>> More
Custom C# Compiler and MSDOS Window

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All I've just got my own little custom c# compiler made, using the article from MSDN. But, when I create a new Windows Forms application using my sample compiler, the MSDOS window also appears, and if I close the DOS window, my WinForms app closes too. How can I tell the Compiler? not to show… >>> More
Add MS-DOS boot option to Windows 2000

as seen on Super User - Search for 'Super User'
I've got an old laptop that is running Windows 2000 & Windows 98 in a multi-boot configuration. I need to add MS-DOS to that list of startup options. I've already added a primary partition, formatted it for FAT16 and made it bootable, and installed MS-DOS 6.22. My question is, how do I add… >>> More
16-bit MS-DOS Subsystem: csrss.exe

as seen on Super User - Search for 'Super User'
Hi all, I just booted up my Samsung N120 netbook (with Windows XP Home SP3) and a dialog box came up with a command prompt window behind it. The dialog box is titled 16 bit MS-DOS Subsystem and the message is as follows: C:\DOCUME~1\SAMSUNG\csrss.exe The NTVDM CPU has encountered an illegal instruction… >>> More

Developer IT