Elo TouchSystems software Driver Manual page 100

General Information 97
The mouse IRQ is important in Windows Enhanced Mode even if you are
using NOMOUSE.COM. See if NOMOUSE.COM is the same as the version
on the DOS and Windows Driver Disk. If not, try that version.
If NOMOUSE.COM was created with PATCHMSE from Microsoft
MOUSE.COM version 7.04, the IRQ will be 2. Earlier versions may be 5. The
patches for Microsoft 8.x or later drivers do not use an interrupt, so using one
of these patched drivers is recommended.
Try removing all unnecessary TSR's and device drivers from
AUTOEXEC.BAT and CONFIG.SYS. Conflicts may show up only in
Windows. Check for interrupt contention with other devices. Remove other
devices and drivers to see if they may be contending with the touchscreen
controller or drivers.
If you are using a bus touchscreen controller on a COM port interrupt (IRQ4
or IRQ3), see Bus Controller on COM Port Interrupt, page 58.
If you have a serial mouse, and it does not work after it was moved while
Windows Enhanced Mode was loaded, see Serial Mouse, page 58.
If you get a warning message saying there is a contention over a LPT or COM
port when you run multiple DOS programs that use ELODEV or
MonitorMouse for DOS, see Running DOS Programs from Windows, page 64,
to prevent these messages.
If your calibration is off only while in Windows, try recalibrating with the
Touchscreen Control Panel.
If your calibration is off when running DOS mouse or touchscreen-driven
programs from Windows, make sure MonitorMouse for DOS is loading an
ELOGRAPH.CAL file. See Calibration File Directory Flag (-d), page 49.
Also make sure ELOGRAPH.CAL contains correct calibration points by
recalibrating with ELOCALIB in each video mode you use. You must reboot
before MONMOUSE.COM will recognize the new calibration points.
If double-clicking is difficult, check that you are using Mode 6. Also see
Double-Clicking, page 62.
If you get a message when Windows is started saying MOUSE.DRV is not
version 8.20 or later, delete POINTER.EXE from the LOAD= line in
WIN.INI.