What is? COM File Format and How to Open it?
Both the Windows and the Disk Operating System (DOS) signal that a program is executable using the COM file format. It is one of the first file formats still in use today since it originated in the early days of computing when CP/M and DOS were the most often used operating systems.
The sole elements in the simple COM format—an instruction set and a header—are these ones. The header is a body of data comprising program size, program entry point address, and program execution entrance point information. The directions will define the way the software will be implemented.
An opened a.COM file loads the instructions into memory and reads the header. This all occurs together. Following that, the program will carry out the intended action and the central processing unit (CPU) will follow the instructions contained within it.
One can create COM files with a text editor or a hex editor and then compile them with a compiler like Turbo C++. Only because COM files are so simple is this feasible. The great majority of applications, however, are written in a high-level language—like C++—then compiled into COM files following their development.
Since their maximum size is just 64 KB. The modern world hardly uses COM files. This is so since most programs usually call for more RAM than this. Besides that, the. The Windows operating system no longer supports COM file format; yet, some emulators are still run on.COM records.