Under MS DOS, interrupts originate with the central processing unit (CPU). The CPU recognizes issues in applications and stops them and sometimes restarts them in order for them to function properly. Sometimes it shut the application down entirely.
MS-DOS 6.22 was the last stand-alone version of MS-DOS. Some believed that MS-DOS 7.0 was the last version of MS-DOS since Windows 95 reported MS-DOS as MS-DOS 7.0. However, this was just a shell in Windows and not a stand-alone version of MS-DOS.
I guess it is a char or an unsigned char. When calling MS-DOS/BIOS interrupts, it represents the value of the AH register.
Shell..
There is no specific file extension for MS-DOS. Files can have any 3 character extension in MS-DOS.
MS DOS partition is always a DOS partition.. You can not make a Non-DOS partition using DOS..
MS-DOS was created by Microsoft, who bought the rights to 86-DOS from Seattle Computer Products in 1981 and modified it to IBM's specifications who then released it as PC-DOS 1.0. It was also released as MS-DOS to run on PCs. MS-DOS went through eight revisions and was finally discontinued in 2000.
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As it is a DOS game, all you have to do is restart in MS-DOS mode to play it.
Not only in DOS but in any OS user communicate with OS by shell.
When MS-DOS is started, IO.sys is loaded first.Chapter 11: MS-DOS InternalsPg: 284Book: Operating Systems
Technically speaking, there is no MS-DOS 8. MS-DOS 6.22 was the last version of MS-DOS released as a separate product. Future updates to MS-DOS were bundled with Windows. You can create a basic MS-DOS boot disk that is branded as being "MS-DOS 8" by formatting a floppy with the Startup disk option in Windows Me, Windows XP, Windows Vista, and Windows 7. These are not typically considered "full" versions of MS-DOS, because they lack many of the programs conatined in 6.22 and prior.
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