Q35662: "Out of Memory" in MS-DOS 4.00, OK in MS-DOS 3.x; 30K Impact
Article: Q35662 Product(s): See article Version(s): 4.00 4.00b 4.50 Operating System(s): MS-DOS Keyword(s): ENDUSER | B_BasicCom | mspl13_basic Last Modified: 16-DEC-1989 MS-DOS Versions 4.00 and later take 30K or more memory than MS-DOS Versions 3.x. As a result, a memory-intensive application that successfully compiled and executed under MS-DOS Versions 3.x may fail to run under MS-DOS Version 4.00. You can check if the problem is caused by memory limitations by adding a SETMEM(-30000) to the beginning of the program and running under MS-DOS Versions 3.x. If the program runs out of memory with this test, it may fail with MS-DOS Version 4.00. This information applies to Microsoft QuickBASIC Versions 4.00 4.00b and 4.50 for MS-DOS, to Microsoft BASIC Compiler Versions 6.00 and 6.00b for MS-DOS and MS OS/2, and to Microsoft BASIC PDS Version 7.00 for MS-DOS and MS OS/2.
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