Command 0x0B: Set tempo

Sets the BGM tempo.

Syntax

0x0B, byte tempo

Parameters

Parameter	Type	Contents
tempo	byte	Tempo

Remarks

Sets the BGM tempo ($1F). On each timer period, the tempo is added to the tempo accumulator, and each time it overflows, the BGM sequence advances by 1 tick.
The number of ticks per second is 80 × tempo / 256.
This command takes no time to process, and the following event is read within the same tick.

Note

Even when executed on an SE channel, the BGM tempo is changed. The SE tempo cannot be changed from the value specified in the sequence data header.