Path: utzoo!attcan!uunet!van-bc!ubc-cs!news-server.csri.toronto.edu!cs.utexas.edu!samsung!sol.ctr.columbia.edu!cica!iuvax!rschmidt From: rschmidt@copper.ucs.indiana.edu (Roy Schmidt) Newsgroups: comp.os.msdos.misc Subject: DOS 4.01 Device Drivers Keywords: EMM386.SYS, HIMEM.SYS Message-ID: <77533@iuvax.cs.indiana.edu> Date: 11 Dec 90 00:53:28 GMT Sender: news@iuvax.cs.indiana.edu Organization: Indiana University, Bloomington IN. Lines: 38 It seems that there are two device drivers in my MSDOS 4.01 package that are not documented. I had not given much thought to these two because I had only 1 MB of RAM, but recently I installed a wee bit more (4 MB). Now, I happily sat down and decided to use this new RAM by using the nifty device drivers MS included. I placed both in my config.sys file as the first two entries, figuring EMM386 would activate the LIM 4.0 memory board, and HIMEM would do something about DOS hogging up 130K of conventional memory. I was right on both counts, but somewhat dismayed that I didn't get all I expected. EMM386 only activated 640K of LIM 4.0 Expanded Memory. It also gave me a message saying that fact. I examined this with PCTOOLS and found that over 3 MB of Extended Memory was there and *not* accessible. Further, PCTOOLS thumbed its nose at the 640K of Expanded Memory and didn't use any of it to store its overlays as advertised. HIMEM grabbed 64K of RAM from limbo land (between 640 and 1024) and stored part of DOS and all the other device drivers (mouse, ansi, etc.) up there. They all function just fine, and DOS is trimmed to 73K (still a little fat, but I can wait for 5.0). Now, so much for jabbering -- just wanted everyone to understand that the things work, and I basically know what I am doing. My problem is that I don't have any documentation for these two drivers. I went thru the manuals every which way and they are not there! Is anyone familiar with these two drivers? Are there switches to control such things as how much Expanded Memory gets turned on (EMM386) or how much limbo room is stuffed with DOS? Thanks to anyone with docs or other esoteric knowledge... -------------------------------------------------------------------------- Roy Schmidt | #include Indiana University | /* They are _my_ thoughts, and you can't Graduate School of Business | have them, so there! */