Q37415: QuickBASIC 4.50 and Earlier May Not Work with MS-DOS 4.00
Article: Q37415 Product(s): See article Version(s): 4.00 4.00b 4.50 Operating System(s): MS-DOS Keyword(s): ENDUSER | | mspl13_basic Last Modified: 2-NOV-1988 QuickBASIC Version 4.50 and earlier releases have not been tested with MS-DOS Version 4.00. Microsoft does not claim that QuickBASIC Version 4.50 (and earlier versions) will work with MS-DOS Version 4.00. QuickBASIC Versions 4.00, 4.00b, and 4.50 require a DOS version between Versions 2.10 and 3.x. QuickBASIC may not work correctly with MS-DOS Version 4.00 because of memory-management issues. In particular, the SHELL feature fails, both from Shell in the File menu in the QB.EXE editing environment and from the SHELL statement in a compile program. The "Make .EXE" function of QuickBASIC will also not work properly in MS-DOS Version 4.00, because it requires a SHELL to BC.EXE and LINK.EXE. BC.EXE will work from the MS-DOS command line. CHAIN statement failures have also been reported with QuickBASIC operating under MS-DOS Version 4.00.
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