SS.Tone Set Status
From NitrOS-9
Creates a sound through the terminal output device.
| Entry Conditions | |
| A | path number |
| B | SS.Tone ($98) |
| X | duration and amplitude of the tone |
| LSB = duration in ticks (60/sec) in the range 0-255 | |
| MSB = amplitude of tone in the range 0-63 | |
| Y | relative frequency counter (0=low, 4095=high) |
| Exit Conditions | |
| These are the same as the entry conditions. There are no error conditions. | |
Additional Information
- This call produces a programmed I/O tone through the speaker of the monitor used by the terminal device. You can make the call on any valid path open to term or to a window device.
- The system does not mask interrupts during the time the tone is being produced.
- The frequency of the tone is a relative number ranging from 0 for a low frequency to 4095 for a high frequency. The widest variation of tones occurs at the high range of the scale.
