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Grex Micros Item 217: Of Mice and QEMM and Lotus 123
Entered by drew on Fri Oct 1 20:04:26 UTC 1999:

    I have Lotus 123 on a pentium system, kept from the days I got it on my
old 286. It works adequately in either DOS or a WFW 3.11 DOS window, *except*
when either (1) a mouse driver is present (whether running or not), or (2)
I am using QEMM (HIMEM and EMM386 are okay), or (3) both. In either case, I
get the intro screen, then the worksheet display as normal, but half a second
later I get dumped back to DOS *and* get put in the root directory of the
volume that I started on.

    Any idea why? And how to get the programs to co-exist peacefully?

3 responses total.

#1 of 3 by wlevak on Sun Oct 3 05:05:18 1999:

The DOS version of Lotus 123 uses both expanded and extended memory.  Set your
PIF file to have enough of both.  The DOS mouse driver may be incompatible.
Some DOS applications require the DOS mouse driver, some don't.  You have to
experiment.  In any case, use mouse.com, not mouse.sys. Version 7.20 is the
best.

#2 of 3 by drew on Sun Oct 3 15:48:16 1999:

It crashes under QEMM even when running without Windows, from the plain DOS
prompt, which should give it access to all the machine's memory. It's not an
issue under DOS's memory drivers (HIMEM/EMM386) provided that there is no
mouse driver present.

And I already use MOUSE.COM. I might try some third-party mouse drivers.

#3 of 3 by wlevak on Mon Oct 4 00:17:48 1999:

Your expanded memory driver must be LIM 3 or 4 compatible.  I believe there
was some question as to whether QEMM was fully compatible.

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