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Effect
Modifies the timbre and the volume of the 'beep' sound produced by the PSG with the BEEP instruction, a BASIC error situation, the boot sequence or printing of 'bell'-character (07h).
This selected sound and volume will be stored to the SRAM of the Real Time Clock (RTC) to prevent settings being lost when machine is powered off.
Syntax
SET BEEP <Timbre>,<Volume>
A least one parameter needs to be used.
Do not put a comma if no parameters are behind.
Parameters
<Timbre> is a number to specify the type of BEEP:
- 1: High tone beep (same as on MSX1 machines)
- 2: Low tone beep
- 3: 2-tone beep
- 4: 3-tone beep
<Volume> is a number to specify the volume of the BEEP:
- 1: Very low
- 2: Low
- 3: Medium
- 4: High
Example
SET BEEP 3,2
Storage in the RTC
The Real Time Clock (RTC) is a small storage of 53 bytes in blueMSX (52 bytes in openMSX).
The data saved with SET BEEP are stored as following (hexadecimal locations in the files):
- #25 in blueMSX (#24 in openMSX)
| Value | Timbre | Volume | Value | Timbre | Volume | |
|---|---|---|---|---|---|---|
| 00 | 1, High tone | 1, Very low | 08 | 3, 2-tone | 1, Very low | |
| 01 | 1, High tone | 2, Low | 09 | 3, 2-tone | 2, Low | |
| 02 | 1, High tone | 3, Medium | 0A | 3, 2-tone | 3, Medium | |
| 03 | 1, High tone | 4, High | 0B | 3, 2-tone | 4, High | |
| 04 | 2, Low tone | 1, Very low | 0C | 4, 3-tone | 1, Very low | |
| 05 | 2, Low tone | 2, Low | 0D | 4, 3-tone | 2, Low | |
| 06 | 2, Low tone | 3, Medium | 0E | 4, 3-tone | 3, Medium | |
| 07 | 2, Low tone | 4, High | 0F | 4, 3-tone | 4, High |
Related to
Compatibility
MSX-BASIC 2.0 or higher