ALS300 Datasheet, PDF (5/66 Pages) List of Unclassifed Manufacturers – Media Audio Controller SPEC

Avance Logic Inc.
BASEENABLE = P 'N P logical device 0 port 30.0;
ESP-RD-STATUS = ESP-RD-STATUS8 or ESP-RD-STATUS16
Mixer & Control:
BASE+4h
BASE+5h
R/W MIXER-INDEX
R/W MIXER-DATA
FM (OPL3 compatible) synthesizer :
BASE+0-3h
BASE+8,9h
ADLIBBASE+0-3h
R/W
R/W
R/W
OPL3/4 address:0-3
OPL3/4 address:0,1
OPL3/4 address:0-3
ADLIBBASE = 0388h (P 'N P logical device 1) ;
ADLIBENABLE = P 'N P logical device 1 port 30.0 (CR20.0);
Gameport :
GAMEBASE+0-7h
GAMEBASE+0-7h
R
GAME-READ
W
GAME-WRITE
GAMEBASE = 0200h (P 'N P logical device 2);
GAMEENABLE = P 'N P logical device 2 port 30.0 (CR21.0);
MPU401 And Wave-table Synthesizer:
MPU401BASE+0h
MPU401BASE+0h
MPU401BASE+1h
MPU401BASE+1h
MPU401BASE+2h
MPU401BASE+3h
R
MIDI INPUT FIFO
W
MIDI OUTPUT FIFO
R
MIDI-STATUS
W
MIDI-COMMAND
R/W RAM-CNT
R
RAM-DATA
ALS300
MPU401BASE = P 'N P logical device 3 port 60.1,0 (CR0C) and port 61.7-3 (CR0D);
MPU401ENABLE = P 'N P logical device 3 port 30.0 (CR0A);
CR3.5 = 1: Special MPU-401 or 0: Standard MPU-401
MPU401BASE+2~3h is effective only when CR3.5=1.
MIDIOUT : tri-state with internal pull up resisters when power up reset.
0
external 10K pull down
1
internal 50K pull up
Power up value
CR3.5
power up latch value of MIDIOUT
On power up reset , MIDIOUT will tri-state with 50K internal pull up resistors, after reset, these resistors
will be disconnected from VCC.
Power Management Control Register
BASE+7h
BASE+Bh
BASE+Dh
R/W POWER DOWN REGISTER
R/W POWER MANAGEMENT REGISTER
R
ACTIVITY STATUS REGISTER
5