ong@d.cs.okstate.edu (ONG ENG TENG) (01/02/91)
I just got a 386SX with NEAT chips. The NEAT chips allow me to set the memory greater than 1 meg to expanded memory (EMS 4.0). I have 4 meg. Should I set the motherboard memory to expanded or should I set it to extended then use QEMM.SYS to make it work like expanded memory (I have QEMM)? Which is faster? I should think it does not matter that much. Anybody has any experience? E. Teng Ong (ong@d.cs.okstate.edu)
silver@xrtll.uucp (Hi Ho Silver) (01/04/91)
The general answer to this question is another question: What type of memory is more useful to the programs you'll be running? If you'll be running Lotus 1-2-3 R3 for the most part, for example, you should set your memory up as extended memory. If you're running Lotus 1-2-3 R2.2, on the other hand, you should set it up as expanded. So figure out what programs you'll be running, find out what type of memory each of them will use, and make your decision based on that. If it turns out to be a split, you may want to consider QEMM or other such programs, since they can often be set up to provide expanded memory to programs which want it and extended memory to those which want extended. -- __ __ _ | ...!nexus.yorku.edu!xrtll!silver | always (__ | | | | |_ |_) >----------------------------------< searching __) | |_ \/ |__ | \ | if you don't like my posts, type | for _____________________/ find / -print|xargs cat|compress | SNTF
schwalbe@pinocchio.Encore.COM (Jim Schwalbe) (01/05/91)
In article <1991Jan2.091603.24584@d.cs.okstate.edu> ong@d.cs.okstate.edu (ONG ENG TENG) writes: >I just got a 386SX with NEAT chips. The NEAT chips allow me to >set the memory greater than 1 meg to expanded memory (EMS 4.0). >I have 4 meg. Should I set the motherboard memory to >expanded or should I set it to extended then use QEMM.SYS to >make it work like expanded memory (I have QEMM)? Which is >faster? I should think it does not matter that much. Anybody >has any experience? > I'll tell you what I did and it works just fine. Set the bit in the XCMOS setup to disable expanded memory. When you install QEMM.SYS in your CONFIG.SYS file, it will automatically allocate your >1Meg memory to either expanded or extended depending on what the programs that are running need. I've run all kinds of programs that use expanded and extended memory and haven't had any problems yet. The only negative effect I've noticed so far from QEMM is that it slow the hard drive data transfer rate down from about 800 K-bytes/sec to just over 500 K-bytes/sec :-( Someone on the net here warned about that and it is true, I noticed it right away. I've decided to live with it for the benefits of QEMM. BTW, QEMM takes up less memory below 640K than other expanded memory managers alone (including Windows expanded memory manager) and it acts like a expanded and extended memory manager. .---------------------------------------------------------------------------. : Jim Schwalbe .----------------. "Half of what I say is : : Hardware Research Group .--+-------------. | meaningless; but I say it : : Encore Computer Corp. | | E N C O R E | | so that the other half may : : Mail: | `-------------+--' reach you." : : schwalbe@encore.com `----------------' - Kahil Gibran : `---------------------------------------------------------------------------'
williams@umaxc.weeg.uiowa.edu (Kent Williams) (01/05/91)
For those of you who have any of the 286 or 386 C&T chipsets, there is
a suite of drivers called The Last Byte, that does a lot of what QEMM.SYS
et al do, without using Virtual 86 mode. The Neat chipset allows you to
arbitrarily remap memory, so TLB fills in the holes above 640K with the
RAM that is normally hidden behind the ROMS and Video Ram.
There is NO performance penalty, as there is with QEMM. It is also compatible
with Windows 3.0.
If you can ftp from WSMR-SIMTEL20.ARMY.MIL, you can get TLB at
PD1:<MSDOS.SYSUTL> TLB-V117.ZIP
It is crippleware, but you can experiment with it. It is 30$ to register.
Or contact dlewis@scu.bitnet; he's the author.
--
Kent Williams --- williams@umaxc.weeg.uiowa.edu
"'Is this heaven?' --- 'No, this is Iowa'" - from the movie "Field of Dreams"
"This isn't heaven, ... this is Cleveland" - Harry Allard, in "The Stupids Die"ong@d.cs.okstate.edu (ONG ENG TENG) (01/06/91)
From article <13724@encore.Encore.COM>, by schwalbe@pinocchio.Encore.COM (Jim Schwalbe): > The only negative effect I've noticed so far from QEMM is that > it slow the hard drive data transfer rate down from about 800 K-bytes/sec to > just over 500 K-bytes/sec :-( Someone on the net here warned about that and > it is true, I noticed it right away. I've decided to live with it for the > benefits of QEMM. BTW, QEMM takes up less memory below 640K than other > expanded memory managers alone (including Windows expanded memory manager) and > it acts like a expanded and extended memory manager. Yes, I too notice the disk slowdown, but did not think much of it until you mentioned it. Anyone else see it?