DOCUMENT:Q78451 30-JUN-1999 [win16sdk] TITLE :INFO: Detecting EGA.SYS PRODUCT :Microsoft Windows Software Development Kit PROD/VER:WINDOWS:3.1 OPER/SYS: KEYWORDS:kb16bitonly _IK kbSDKWin16 ====================================================================== 3.00 3.10 WINDOWS kbprg ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows Software Development Kit (SDK) 3.1 ------------------------------------------------------------------------------- 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). Additional query words: 3.00 3.10 ====================================================================== Keywords : kb16bitonly _IK kbSDKWin16 Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310 Version : WINDOWS:3.1 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.