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| Keyword | Abbreviation | Token (hex) | Version(s) | Classification |
| VOL | V{Shift+O} | DB | 3.5, 7.0 | Command and Statement |
| DCLEAR | DC{Shift+L} | DB | 4.7 | Command and Statement |
VOL amplitude
| Parameters | Type | Legal Value(s) | Default Value | Note(s) |
| amplitude | Unsigned Byte | 0 ~ max | 0 (v3.5)
15 (v7.0) | max is 8 in v3.5
max is 15 in v7.0 |
Audio management. Set the audio chip's master volume level.
VOL sets the master volume for the audio generated by the computer. An amplitude greater than zero
must be used in order to hear anything from the ASCII Bell, CHR$(7) [a.k.a., Control-G ],
or the PLAY and SOUND statements.
If the amplitude is omitted or is an invalid expression, SYNTAX ERROR occurs.
If amplitude is not numeric, TYPE MISMATCH ERROR occurs; VAL may be used
to convert a string value. A floating-point amplitude will be converted with
INT. If the result is not a Legal Value (see table above),
ILLEGAL QUANTITY ERROR occurs.
BASIC provides no function to read the current amplitude. If you need to determine the value,
you will have to PEEK a secret variable.
Example:
VOL "8"
?TYPE MISMATCH ERROR
READY.
VOL 8
READY.
|
COLOR, ENVELOPE, TEMPO
POT, RCLR, RLUM
CHR$, PLAY, SOUND
© H2Obsession, 2014 |