Mail Archives: opendos/1999/06/04/07:46:24
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
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Matthias Paul, Ubierstrasse 28, D-50321 Bruehl, Germany
eMail: <Matthias DOT Paul AT post DOT rwth-aachen DOT de>
Web : http://www.rhrz.uni-bonn.de/~uzs180/mpdokeng.html
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