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The Original Shareware (WeMake CDs)(Volume 1.1)(CDs, Inc)(1993).iso
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RBASE21.TEC
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1988-05-18
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DESQview and QEMM Technical Note
Problems With QEMM.SYS and RBASE for DOS V2.1
A number of our users of QEMM.SYS have reported problems using RBASE
for DOS both inside DESQview and outside when the expanded memory
driver is loaded. In general, what happens is that they boot RBASE,
try to open a database and get the message "Database exists" which
goes into a loop requiring reboot.
We have now determined that this is an RBASE problem and that it is
apparently happening with some other EMS 4.0 memory managers as well.
Microrim is aware of the problem and is said to be at work on a fix.
In the meantime, in order to get RBASE to work properly, you must do
something to keep RBASE from seeing any more than 64K of expanded
memory.
If you are running in DESQview 2.0 or above, this is fairly easy.
Just run Change a Program in DESQview, select RBASE as the program you
want to change, select the advanced options and set the parameter
"Maximum Expanded Memory Size (in K)" to 64.
If you are running outside of DESQview, it is potentially more
difficult. You could set a "MEMORY=64" option for the QEMM device
driver, but this will mean for other programs that want expanded
memory, you would only have 64K available.
If QEMM comes up in the Auto/Off mode and is not being used to
backfill, sort memory or mapping high RAM or ROM, the simplest thing
to do is turn QEMM off, by typing "QEMM OFF" using the QEMM.COM file.
This makes expanded memory temporarily unavailable. After running
RBASE, you can type "QEMM ON" to reactivate expanded memory.
If you have a modem, another solution is to get a program we developed
prior to the release of DESQview 2.0 for limiting the amount of memory
a program will see when it makes a call for expanded memory. The
program is on the DESQview Bulletin Board System (213)396-3904 in the
public directory and is called LIMITEM.EXE (with documentation in
the file LIMITEM.DOC). This program can be run in a batchfile before
running RBASE and can be used to set the expanded memory available to
0K or 64K. Unfortunately, since this program was written to be run in
a DESQview window which would later be closed, there is no provision
to rerun LIMITEM and set a higher figure after exiting RBASE, so you
would have to reboot your machine to regain expanded memory after
running RBASE, but at least this is an option.
Please note, this problem only exists with RBASE for DOS version 2.1,
it does not occur with any previous version of RBASE and we expect
will not occur with future versions of RBASE since Microrim is aware
of the problem. However, we encourage you to contact Microrim
concerning the problem since it is conceivable they might develop some
sort of patch or workaround in the interim.
* * * E N D O F F I L E * * *