Filter
Top Products
YMF715E
May 21, 1997
-28-
9-1-2-2. Sound Blaster Pro compatibility Mixer
The table below is the register map of mixer of Sound Blaster Pro compatibility.
Index D7 D6 D5 D4 D3 D2 D1 D0
00h Reset Mixer
04h Voice Vol. Lch - Voice Vol. Rch
0Ah----- MIC Vol. -
0Ch - -
Input
Filter
-
Low Pass
Filter
Input Source -
0Eh - -
Output
Filter
---
Stereo
SW
-
22h Master Vol. Lch - Master Vol. R -
26h MIDI Vol. Lch - MIDI Vol. Rch -
28h CD Vol. Lch - CD Vol. Rch -
2Eh Line Vol. Lch - Line Vol. Rch -
The bit remarked indicates that these can be read and written but not effective.
The actual value written to the Master Vol., MIDI Vol., CD Vol. and Line Vol. is based on the table
shown below. And when read, actual value cannot be read and written value to each register is read
instead.
Voice Vol.
(
04h
)
, CD Vol.
(
28h
)
, Line Vol.
(
2Eh
)
01234567
0
mute mute mute mute mute mute mute mute
1
mute -28.5dB -22.5dB -16.5dB -10.5dB -7.5dB -3.0dB 0dB
2
mute -22.5dB -16.5dB -10.5dB -7.5dB -3.0dB 0dB 0dB
3
mute -16.5dB -10.5dB -7.5dB -3.0dB 0dB 0dB 0dB
4
mute -10.5dB -7.5dB -3.0dB 0dB 0dB 0dB 0dB
5
mute -7.5dB -3.0dB 0dB 0dB 0dB 0dB 0dB
6
mute -3.0dB 0dB 0dB 0dB 0dB 0dB 0dB
7
mute 0dB 0dB 0dB 0dB 0dB 0dB 0dB