1. DJGPP, the 32-bit DPMI DOS port of gcc.

2. It requires any DPMI server that supports 32-bit mode.

3. It is also possible to run 32-bit DPMI executables using DOS extenders.

4. DOS/4G DOS Protected Mode Interface (DPMI) i.e. version 1.1 "DOS/32A DOS Extender -- ChangeLog".

5. The DOS Protected Mode Interface (DPMI) is Microsoft's prescribed method for an MS-DOS program to access extended memory under a multitasking environment.