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outportb procedure

In unit go32

Write byte to I/O port.

Declaration

pascal
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

Example: outport

pascal
{ 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.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.