(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 oNIBM PCs. The DPMI specificatioN was fiNalized iN 1990. The specificatioN itself is available from {INtel Literature Sales}. 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)