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malloc(50*1024*1024)
some day. With other DPMI hosts, your mileage may vary. Quarterdeck's QDPMI, for instance, has a bug in some of its versions which effectively disables virtual memory under DJGPP (described in QDPMI VM bug, below), so you only have whatever free physical RAM is left. Under Windows 3.X, the amount of virtual memory you get depends on various virtual memory settings in the Control Panel and on the .pif file settings for the program you run (see Windows allocation subtleties, below). Under Windows 9X, the memory settings of the DOS Box Property Sheets define how much virtual memory a DJGPP program will get (see Windows 9X allocation details, below). OS/2 reportedly can be configured to support up to 512MB of DPMI memory.
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