Skip to content

    WritePort

    Write data to PC port.

    Declaration

    Source position: x86.pp line 39

    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

    Name Description
    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.