VT82C686B

Manufacturer Part NumberVT82C686B
ManufacturerETC-unknow
VT82C686B datasheet
 
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Offset 42 – Function Enable ....................... RW (Function 5)
Offset 42 – Function Enable ........................ RO (Function 6)
7
MIDI PnP
0
MIDI Port Address Selected by Rx43[3-2] . def
1
MIDI Port Address Selected by IOBase2
6
Mask MIDI IRQ
0
Disable ...................................................default
1
Enable
5
Function 5 Config Reg Rx2C Writable
0
F5Rx2C-2F RO ......................................default
1
F5Rx2C-2F RW
4
Gate SoundBlaster PCM When FIFO Empty
0
Disable ...................................................default
1
Enable
3
Game Port Enable (ENGAME)
0
Disable ...................................................default
1
Enable (200-207h)
2
FM Enable (ENFM)
0
Disable ...................................................default
1
Enable (388-38B)
1
MIDI Enable (ENMIDI)
0
Disable ...................................................default
1
Enable
0
SoundBlaster Enable (ENSB)
0
Disable ...................................................default
1
Enable
Offset 43 – Plug and Play Control ............. RW (Function 5)
Offset 43 – Plug and Play Control .............. RO (Function 6)
7-6
SoundBlaster IRQ Select (SBIRQS[1:0])
00 IRQ5 .....................................................default
01 IRQ7
10 IRQ9
11 IRQ10
5-4
SoundBlaster DRQ Select (SBDRQS[1:0])
00 DMA Channel 0
01 DMA Channel 1 .....................................default
10 DMA Channel 2
11 DMA Channel 3
3-2
MIDI Decode Select (MIDIBASE)
00 300-303h
01 310-313h
10 320-323h
11 330-333h ................................................default
1-0
SoundBlaster Decode Select (SBBASE)
00 220-22Fh ................................................default
01 240-24Fh
10 260-26Fh
11 280-28Fh
Revision 1.71 June 9, 2000
Offset 44 – MC97 Interface Control .......... RO (Function 5)
Offset 44 – MC97 Interface Control ......... RW (Function 6)
7
AC-Link Interface for Slot-5
0
Disable................................................... default
1
Enable
6
Secondary Codec Support
0
Disable................................................... default
1
Enable
5
Function 6 Config Reg Rx9-B Writable
0
F6Rx9-B RO.......................................... default
1
F6Rx9-B RW
4
Function 6 Config Reg 2Ch Writable
0
F6Rx2C-2F RO...................................... default
1
F6Rx2C-2F RW
3-0
Reserved
........................................always reads 0
Offset 48 – FM NMI Control ..................... RW (Function 5)
Offset 48 – FM NMI Control ...................... RO (Function 6)
7-3
Reserved
........................................always reads 0
2
FM IRQ Select
0
Route FM Trap interrupt to NMI........... default
1
Route FM Trap interrupt to SMI
1
FM SGD Data for SoundBlaster Mixing
0
Disable................................................... default
1
Enable
0
FM Trap Interrupt
0
Enable
1
Disable .................................................. default
Offset 4B-4A – Game Port Base Address ....................... RW
15-0 Game Port Base Address .........................default = 0
-109-
Function 5 & 6 Registers - AC97 Audio & Modem Codecs
VT82C686B