Fórum Como reproduzir som pelo alto-falante interno? #191755

procedure SetPort(address, Value: Word); var bValue: Byte; begin bValue := trunc(Value and 255); asm mov dx, address mov al, bValue out dx, al end; end; function GetPort(address: Word): Word; var bValue: Byte; begin asm mov dx, address in al, dx mov bValue, al end; GetPort := bValue; end; procedure Sound(aFreq, aDelay: Integer); procedure DoSound(Freq: Word); var B: Byte; begin if Freq > 18 then begin Freq := Word(1193181 div Longint(Freq)); B := Byte(GetPort($61)); if (B and 3) = 0 then begin SetPort($61, Word(B or 3)); SetPort($43, $B6); end; SetPort($42, Freq); SetPort($42, Freq shr 8); end; end; procedure Delay(MSecs: Integer); var FirstTickCount: LongInt; begin FirstTickCount := GetTickCount; repeat Sleep(1); until ((GetTickCount - FirstTickCount) >= Longint(MSecs)); end; begin if Win32Platform = VER_PLATFORM_WIN32_NT then begin Windows.Beep(aFreq, aDelay); end else begin DoSound(aFreq); Delay(aDelay); end; end; procedure NoSound; var Value: Word; begin if not (Win32Platform = VER_PLATFORM_WIN32_NT) then begin Value := GetPort($61) and $FC; SetPort($61, Value); end; end; Exemplo de uso: CODE procedure TForm1.Button1Click(Sender: TObject); begin Sound(500, 1000); Sound(700, 1000); Sound(900, 1000); NoSound; end;