DOS Protected Mode Interface

(DPMI) The method which Microsoft prescribes for a DOS

program to access extended memory under a multitasking

environment, e.g. Microsoft Windows. This service is

provided by the HIMEM.SYS driver on IBM PCs.

The DPMI specification was finalized in 1990. The

specification itself is available from Intel LiteratureSales.

VCPI (Virtual Control Program Interface), which was an

alternative, and incompatible method for doing the same thing.

["Windows 3.1 Secrets", Brian Livingston, 1992, ISBN

1-878058-43-6, pages 280-281 and 302].

(1995-01-12)