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

WritePortW

Write Word to PC port

Declaration

Source position: x86.pp line 39

procedure WritePortW(

  Port: LongInt;

  Value: Word

);

procedure WritePortW(

  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

WritePortL

  

Write longint to PC port.

WritePortB

  

Write byte 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: Jun 23 2021