VT82C686B

Manufacturer Part NumberVT82C686B
ManufacturerETC-unknow
VT82C686B datasheet
 


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Super-I/O Configuration Registers (I/O Space)
Port Super-I/O Configuration Registers
3F0
Super-I/O Config Index (Rx85[1]=1)
3F1
Super-I/O Config Data (Rx85[1]=1)
Super-I/O Configuration Registers (Indexed via Port
3F0/1)
Offset Super-I/O Control
00-DF -reserved-
E0
Super-I/O Device ID
E1
Super-I/O Device Revision
E2
Function Select
E3
Floppy Ctrlr Base Addr (def = 3F0-7)
E4-E5 -reserved-
E6
Parallel Port Base Addr (def = 378-F)
E7
Serial Port 1 Base Addr (def = 3F8-F)
E8
Serial Port 2 Base Addr (def = 2F8-F)
E9-ED -reserved-
EE
Serial Port Configuration
EF
Power Down Control
F0
Parallel Port Control
F1
Serial Port Control
F2
Test Mode (Do Not Program)
F3
-reserved-
F4
Test Mode (Do Not Program) 2
F5
-reserved-
F6
Floppy Controller Configuration
F7
-reserved-
F8
Floppy Controller Drive Select
F9-FB -reserved-
FC
General Purpose I/O
FD-FF -reserved-
Revision 1.71 June 9, 2000
Super-I/O I/O Ports
Default Acc
Offset Floppy Disk Controller (Base = E3) Default Acc
00
RW
00-01 -reserved-
00
RW
02
FDC Command
03
-reserved-
04
FDC Main Status
04
FDC Data Rate Select
05
FDC Data
Default
Acc
06
-reserved-
00
RO
07
Disk Change Status
3C
RW
00
RW
Offset Parallel Port (Base = E6)
03
RW
00
Parallel Port Data
FC
RW
01
Parallel Port Status
00
RO
02
Parallel Port Control
DE
RW
03
EPP Address
FE
RW
04
EPP Data Port 0
BE
RW
05
EPP Data Port 1
00
RO
06
EPP Data Port 2
00
RW
07
EPP Data Port 3
00
RW
400h ECP Data / Configuration A
00
RW
401h ECP Configuration B
00
RW
402h ECP Extended Control
00
RW
00
RO
Offset Serial Port 1 (Base = E7)
00
RW
0
Transmit (Wr) / Receive (Rd) Buffer
00
RO
1
Interrupt Enable
00
RW
2
FIFO Control
00
RO
2
Interrupt Status
00
RW
3
UART Control
00
RO
4
Handshake Control
00
RW
5
UART Status
00
RO
6
Handshake Status
7
Scratchpad
9-8
Baud Rate Generator Divisor
A-F
-undefined-
Offset Serial Port 2 (Base = E8)
0
Transmit (Wr) / Receive (Rd) Buffer
1
Interrupt Enable
2
FIFO Control
2
Interrupt Status
3
UART Control
4
Handshake Control
5
UART Status
6
Handshake Status
7
Scratchpad
9-8
Baud Rate Generator Divisor
A-F
-undefined-
-29-
VT82C686B
00
--
--
RW
00
--
--
RO
02
WO
--
RW
00
--
--
RO
Default Acc
--
RW
--
RO
RW
E0
RW
RW
RW
RW
RW
RW
RW
RW
Default Acc
RW
RW
WO
RO
RW
RW
RW
RW
RW
RW
--
Default Acc
RW
RW
WO
RO
RW
RW
RW
RW
RW
RW
--
Register Overview