Between 1989 and 1990 an alternative specification was proposed under the name Extended VCPI (XVCPI) by a number of companies including Intel, Digital Research, Interactive Systems and Viewport to address some of the shortcomings of VCPI and better exploit the memory management and multitasking capabilities of the 386 processor. It was used by a small number of products including operating systems like Interactive Unix, Concurrent DOS 386 and Multiuser DOS. These efforts ultimately succumbed to the parallel development and publication of the DPMI specification in 1990, which addressed similar problems, but was compatible with the implementation of Microsoft Windows 3.0 to be released the same year.
Read more about this topic: Virtual Control Program Interface
Famous quotes containing the word extended:
“Only very slowly and late have men come to realize that unless freedom is universal it is only extended privilege.”
—Christopher Hill (b. 1912)