Path: utzoo!attcan!uunet!cs.utexas.edu!usc!apple!agate!violet.berkeley.edu!ilan343 From: ilan343@violet.berkeley.edu Newsgroups: comp.windows.ms Subject: Re: Windows 3.0 (Protected mode apps) Message-ID: <1990May25.165832.29650@agate.berkeley.edu> Date: 25 May 90 16:58:32 GMT References: <6564@umd5.umd.edu> Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44) Organization: University of California, Berkeley Lines: 22 In article dsampson@x102a.harris-atd.com (sampson david 58163) writes: >The /R tells windows to start in real mode (i.e. 286 mode), which >maintains compatability for older programs. The downside of the /R >paramater is that in forcing 286 compatability, you are limited to the >640K barrier. In standard mode, that barrier is removed. > Does MSW 3.0 include a DOS extender? How do I develop protected mode applications to run under 3.0? I assume I would need a compiler and linker that generate code for the extender. Did Microsoft announce any development tools for this purpose? A related note. Quarterdeck had a display in the Xhibition, with demos of their X-Windows implementation for MS-DOS. They are able to run both X server and clients in 286 and 386 DOS machines, with applications running under a variety of DOS extenders. It runs under Deskview, allowing users to mix-and-match real, protected mode DOS and X-Windows applications. They claimed it wouldn't require much hardware (demo included a 286-laptop). Quarterdeck's approach offers PC developer the possibility of writing code portable to a variety of machines. Question: How does this impact Windows 3.0?