ID Number: Q78451
3.00
WINDOWS
Summary:
EGA.SYS is a driver that facilitates the use of the shadow registers
in EGA and more advanced video cards. Through the use of the mouse
driver's Interrogate Driver function, it is possible to determine if
EGA.SYS is installed.
The interface to the Interrogate Driver function is as follows:
AH = FAh
BX = 0
INT 10h
The return values are:
AX = Restored
BX = 0 if the mouse driver or EGA.SYS is not installed
< 2 if EGA.SYS was installed with the mouse driver
>= 2 if EGA.SYS was installed
For more information, see chapter 10 of the "Microsoft Mouse
Programmer's Reference," second edition (Microsoft Press).