DOS Protected Mode Interface
DOS Protected Mode Interface
The DPMI specification was finalized in 1990. Thespecification itself is available from Intel Literature Sales.
VCPI (Virtual Control Program Interface), which was analternative, and incompatible method for doing the same thing.
["Windows 3.1 Secrets", Brian Livingston, 1992, ISBN1-878058-43-6, pages 280-281 and 302].