outportb

Write byte to I/O port

Declaration

Source position: go32.pp line 180

  procedure outportb(port: Word; data: Byte);

Description

Sends 1 byte of data to the specified I/O port.

Parameters:

port

the I/O port number to send data to.

data

value sent to I/O port.

Return values: None.

Errors

None.

See also

Name	Description
inportb	Read byte from I/O port
outportl	Write longint to I/O port
outportw	Write word to I/O port

Example

{ This example demonstrates the use of the outport functions.
It simply turns the PC's internal speaker on for 50 ms and off again
}
uses
        crt,
        go32;
begin
        { turn on speaker }
        outportb($61, $ff);
        { wait a little bit }
        delay(50);
        { turn it off again }
        outportb($61, $0);
end.