Date: Fri, 04 Jun 1999 13:29:48 +0100 From: Matthias Paul Subject: Re: DRDOS 7.03 loading XMS-driver now wastes memory To: opendos AT delorie DOT com Message-id: <61B290265@reze-1.rz.rwth-aachen.de> Organization: Rechenzentrum RWTH Aachen X-Mailer: Pegasus Mail v3.22 Reply-To: opendos AT delorie DOT com On Wed, 02 Jun 1999 Utz Zarwell wrote: > Sometimes I use to run the HIMEM.SYS from PC-DOS7 as XMS-driver. > It consumes only about 750 Byte of my precious DOS memory. > It runs stable all the time. > Now with DRDOS 7.03 it occupies 32 KB more when loading! Strange. But what do you mean by this exactly? The PC DOS HIMEM.SYS driver under DR-DOS in contrast to DR-DOS own HIMEM.SYS, or the overall memory footprint of DR-DOS compared to PC DOS, etc.? Have you tried the MS-DOS HIMEM.SYS and PC DOS 2000 HIMEM.SYS, too? In the following I am assuming, you meant PC DOS HIMEM.SYS running on DR-DOS: The HIMEM.SYS footprint usually also depends on the detected chipset, so could it be that it has problems to properly detect the hardware when you boot DR-DOS instead of PC DOS? Have you tried the chipset selection switch provided by HIMEM.SYS? Maybe a MEM /A output and your CONFIG.SYS might help. > And using DRDOS HIMEM.SYS as an UMB server as well is not a point > as long as I cannot enable the shadow RAM and make use of it. ;-) What kind of machine are you using (CPU, mainboard, chipset)? If the chipset is not directly supported by DR-DOS HIMEM.SYS but you can provide detailed info how to program your chipset at register level, it might be relatively easy to add your chipset to those supported by HIMEM.SYS. It has preparations to add OEM chipsets when they need it, so it would be just a matter of (someone s) time... ;-) Matthias ------------------------------------------------------------------- Matthias Paul, Ubierstrasse 28, D-50321 Bruehl, Germany eMail: Web : http://www.rhrz.uni-bonn.de/~uzs180/mpdokeng.html -------------------------------------------------------------------