| [Overview][Procedures and functions][Index] | 
Read data from a PC port
Source position: x86.pp line 27
procedure ReadPort(  | 
Port: LongInt;  | 
var Value: Byte  | 
);  | 
Port: LongInt;  | 
var Value: LongInt  | 
);  | 
Port: LongInt;  | 
var Value: Word  | 
);  | 
ReadPort reads one Byte, Word or Longint from port Port into Value.
Note that you need permission to read a port. This permission can be set by the root user with the FpIOPerm call.
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Set permission on IO ports  | 
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Read bytes from a PC port  | 
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Read Words from a PC port  | 
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Read longints from a PC port  | 
|
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Write data to PC port  | 
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Write byte to PC port  | 
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Write longint to PC port.  | 
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Write Word to PC port  |