how to invoke bios service in vc++
C / C++ / MFC
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You can't. In general the BIOS is only used by Windows during the boot process. Once Windows is up and running device drivers do the jobs for which you'd use direct BIOS calls in DOS applications. When Windows runs old DOS applications using WOW the BIOS calls are intercepted and redirected through device drivers. Windows is a multitasking OS and in such an environment you can't have applications making direct BIOS calls.
Steve