UCHAR VideoPortReadPortUchar(
| PUCHAR Port | |
| ); |
VideoPortReadPortUchar reads a byte from a mapped I/O port.
Parameters
Port
Points to the port. The given Port must be in a mapped I/O-space range returned by VideoPortGetDeviceBase.
Return Value
VideoPortReadPortUchar returns the byte read from the adapter.
Comments
A miniport’s HwVidInterrupt or HwVidSynchronizeExecutionCallback function can call VideoPortReadPortUchar.
See Also
HwVidInterrupt, HwVidSynchronizeExecutionCallback, VideoPortGetDeviceBase