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

WritePortl

Write longint to PC port.

Declaration

Source position: line 0

procedure WritePortL(

  Port: LongInt;

  Value: LongInt

);

procedure WritePortl(

  Port: LongInt;

  var Buf;

  Count: LongInt

);

Description

The first form of WritePortB writes 1 byte to port Port. The second form writes Count bytes from Buf 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

WritePort

  

Write data to PC port

WritePortB

  

Write byte 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

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