BOOL VgaAttachToConsole(VOID);
VOID VgaDetachFromConsole(BOOL ChangeMode);
-DWORD VgaGetVideoBaseAddress(VOID);
-DWORD VgaGetVideoLimitAddress(VOID);
COORD VgaGetDisplayResolution(VOID);
VOID VgaRefreshDisplay(VOID);
-VOID VgaHorizontalRetrace(VOID);
VOID VgaWriteFont(UINT FontNumber, CONST UCHAR *FontData, UINT Height);
-VOID VgaReadMemory(DWORD Address, LPBYTE Buffer, DWORD Size);
-VOID VgaWriteMemory(DWORD Address, LPBYTE Buffer, DWORD Size);
VOID VgaClearMemory(VOID);
+BOOLEAN VgaGetDoubleVisionState(PBOOLEAN Horizontal, PBOOLEAN Vertical);
BOOLEAN VgaInitialize(HANDLE TextHandle);
VOID VgaCleanup(VOID);