_outp, _outpw, _outpd
Visual Studio .NET 2003
Output a byte(_outp), a word(_outpw), or a double word (_outpd) at a port.
int _outp( unsigned short port, int databyte ); unsigned short _outpw( unsigned short port, unsigned short dataword ); unsigned long _outpd( unsigned short port, unsigned long dataword );
Parameters
- port
- Port number.
- databyte, dataword
- Output values.
Return Value
The functions return the data output. There is no error return.
Remarks
The _outp, _outpw, and _outpd functions write a byte, a word, and a double word, respectively, to the specified output port. The port argument can be any unsigned integer in the range 0 – 65,535; databyte can be any integer in the range 0 – 255; and dataword can be any value in the range of an integer, an unsigned short integer, and an unsigned long integer, respectively.
Requirements
| Routine | Required header | Compatibility |
|---|---|---|
| _outp | <conio.h> | Win 95 |
| _outpw | <conio.h> | Win 95 |
| _outpd | <conio.h> | Win 95 |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
See Also
Console and Port I/O Routines | _inp | Run-Time Routines and .NET Framework Equivalents
