Microsoft KB Archive/93045
DSWAP Increases by 16 Bytes Each Time an MS-DOS Program Is Run
The information in this article applies to:
- Microsoft Windows versions 3.1, 3.11
- Microsoft Windows for Workgroups versions 3.1, 3.11
Each time you run an MS-DOS-based application in standard mode of either Windows or Windows for Workgroups, the size of DSWAP.EXE in memory increases by 16 bytes. This guarantees that each MS-DOS session starts at a unique address.
MS-DOS keeps track of per-process information such as open files using the address of the program segment prefix. If the size of DSWAP did not increase, two MS-DOS-based applications could be started with the same program segment prefix, and the system would have difficulty distinguishing between them.
Additional query words: 3.10
Issue type :
Technology : kbAudDeveloper kbWin3xSearch kbWFWSearch kbWin310 kbWin311 kbWFW310 kbWFW311
Last Reviewed: December 10, 1999