Top "Dos" questions

A family of disk-based operating systems (Disk Operating System) for mainframes and minicomputers in the 1960s and 1970s, and subsequently IBM PCs and compatibles of the 1980s and 1990s, including MS-DOS.

I don't understand how to use Interrupt 21, AH=0ah

My information is coming from here. The assignment asks for a program that reads in no more than 20 characters, converts …

assembly dos interrupt bios tasm
How to return to the original directory after invoking change directory in DOS batch?

I want to create a batch file, batch.bat, that accepts 2 mandatory arguments: %1 represents a path relative to the current …

batch-file dos
What does it mean by "MOV AH, 4CH" in assembly language?

Most of the assembly code is terminate by the following instructions MOV AH, 4CH INT 21H What does it mean …

assembly dos x86-16 instructions
What is the difference between MD and MKDIR batch command?

Both command creates folders. I read that MKDIR can create even subfolders. Is that only difference? Why there are two …

windows batch-file cmd dos mkdir
Assembly Basics: Output register value

I just started learning assembly language and I am already stuck on the part to "display the decimal values stored …

assembly dos x86-16 emu8086
How were graphical DOS Games written?

I always wondered how the DOS games like Sky Roads, Turbo, Aladdin, Duke Nukem, Commander Keen 6 were written. I cannot …

graphics dos
Embedding a DOS console in a windows form

Is it possible to embed a DOS console in a Windows Form or User Control in C# 2.0? We have a …

c# winforms c#-2.0 dos
How to overwrite a text file from a batch file

I am aware you can append to the end of a file with batch like so... echo I like turtles &…

batch-file dos
Telling XCOPY to copy hidden folders as well as hidden files

I'm trying to get XCOPY to copy an entire directory tree and all its files, however, one of the directory …

dos xcopy
replace a character in the string using DOS commands

I have a requirement in which I need to replace particular character from a string, by using a DOS command. …

command-line batch-file dos