Command 0x0B: Set tempo

Sets the BGM tempo.

Syntax

0x0B, byte tempo

Parameters

Parameter	Type	Description
tempo	byte	Tempo

Description

Sets the BGM tempo ($27). Every timer period the tempo is added to the tempo accumulator, and each time it overflows the BGM sequence advances by one tick.
The number of ticks per second is (8000 ÷ timer 0 divider) × tempo ÷ 256.

This command takes no time to process; the following event is read within the same tick.

Note

Executing it on an SE channel also changes the BGM tempo. The SE tempo cannot be changed from the value specified in the sequence data header.