I need to have the PC beep a set of tones (The PC has no audio card/speakers).
In the DOS version of the program I'm converting, I had this routine that worked well:

procedure Tone
parameters nFrequency,nDuration
@ 0,0 say ""
if empty(parameters())
    set bell to 512,2    && no parameters - reset
else
    set bell to nFrequency,nDuration
    ?? chr(7)
endif

Is there a way to force the output to the PC's internal speaker?

TIA