Message-ID: <3420BBED.23F69891@juno.com> Date: Wed, 17 Sep 1997 22:28:14 -0700 From: Ben Shadwick MIME-Version: 1.0 Newsgroups: comp.os.msdos.djgpp Subject: Re: DJGPP, interprocess communication, and DPMI References: <341FEC5F DOT 77F2 AT EnchantedLearning DOT com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit NNTP-Posting-Host: ip169.van6.pacifier.com Lines: 26 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Precedence: bulk Mitchell Spector wrote: > To do this right, some variables would need to be shared by the > two programs. Is there some way of telling DPMI to map a portion > of each process's virtual memory space to the same physical memory? > Or does a DOS box just not have this capability, since it's running > in a Windows 95 virtual machine? (From the experimentation I've > done, Windows 95 seems to be careful to isolate processes in different > DOS boxes from one another, so that they don't share video screens, > for example. So you don't seem to be able to pick an absolute Not to nitpick or anything, but from what I've seen, that isn't entirely true - I can't run a DOS program that uses the same SVGA mode as Win95 and then flip out of it (either to Win95 or to another running program) without Win95 destroying the program ("This application cannot be restored and will be terminated") because it doesn't save the video memory or something... Good question though... -- Ben Shadwick, Sysop, Mars Base BBS, (360)882-0773, Vancouver, WA, USA email: bshadwickATjunoDOTcom (anti-spam =) WWW: http://www.geocities.com/SiliconValley/Pines/7376/