[Overview][Procedures and functions][Index] Reference for unit 'x86' (#rtl)

WritePort

Write data to PC port

Declaration

Source position: x86.pp line 31

procedure WritePort(

  Port: LongInt;

  Value: Byte

);

procedure WritePort(

  Port: LongInt;

  Value: LongInt

);

procedure WritePort(

  Port: LongInt;

  Value: Word

);

Description

WritePort writes Value -- 1 byte, Word or longint -- to port Port.

Remark: You need permission to write to a port. This permission can be set with root permission with the FpIOPerm call.

Errors

In case of an error (not enough permissions to write to this port), runtime 216 ( Access Violation) will occur.

See also

FpIOPerm

  

Set permission on IO ports

WritePortB

  

Write byte to PC port

WritePortL

  

Write longint to PC port.

WritePortW

  

Write Word to PC port

ReadPortB

  

Read bytes from a PC port

ReadPortL

  

Read longints from a PC port

ReadPortW

  

Read Words from a PC port


Documentation generated on: Nov 16 2015