Nintendo 1504166 - Game Boy Advance SP Edition Console Programming Manual page 103

AGB Programming Manual
SOUNDCNT_H [d15],[d11] FIFO Clear and Sequencer Reset for Each Direct Sound
With direct sound the sequencer counts the number of times data is
transmitted from FIFO to the mixing circuit. A setting of 1 resets the FIFO
and sequencer used for each direct sound. When this bit is read, 0 is
returned.
SOUNDCNT_H [d14],[d10] Timer Selection for Each Direct Sound
Specifies the timer used for each direct sound.
A setting of 0 selects timer 0, and 1 selects timer 1.
The same timer can be specified for both direct sounds (A and B).
SOUNDCNT_H [d13],[d09] L Output for Each Direct Sound
Controls the output to L for each direct sound. A setting of 0 results in no
output to L; a setting of 1 causes output to L.
SOUNDCNT_H [d12],[d08] R Output for Each Direct Sound
Controls the output to R for each direct sound. A setting of 0 results in no
output to R; a setting of 1 causes output to R.
SOUNDCNT_H [d03],[d02] Output Ratio for Each Direct Sound
Selects the output level for each direct sound.
A setting of 0 produces output that is 1/2 of full range. A setting of 1 results
in full-range output.
SOUNDCNT_H [d01 - 00] Output Ratio for Synthesis of Sounds 1-4
Specifies the output level for the synthesis of sounds 1-4.
A setting of 00 results in output that is 1/4 of full range.
A setting of 01 results in output that is 1/2 of full range.
A setting of 10 results in full-range output.
A setting of 11 is a prohibited code.
©1999 - 2001 Nintendo of America Inc.
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Sound
D.C.N. AGB-06-0001-002B4