Partially Supported APIs

The following APIs are partially supported:

• DosDevIOCtl and DosDevIOCtl2
• VioGetConfig
• VioGetMode and VioSetMode
• VioGetState and VioSetState

Note APIs with the Mou or Vio prefixes that require Presentation Manager (PM) or advanced video I/O (AVIO) are supported by the Windows NT Add-on Subsystem for Presentation Manager, available from Microsoft.