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AT-420GW SUPER I/O CARD Hard Disk/Floppy Controller Settings and Configuration






UNIDENTIFIED

AT-420GW SUPER I/O CARD

Chipset

Winbond

Data Bus

16-bit ISA

Card Size

Half height, half length

Hard Drives Supported

Two IDE(AT) devices

Floppy Drives Supported

Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS

Function

Label

Function

Label

40-pin IDE(AT) connector

JP1

2-pin drive active LED

JP8

16-pin game port

JP2

34-pin cable connector - floppy drive

JP9

10-pin serial port 1 - internal

JP3

25-pin parallel port - external

JP15

9-pin serial port 2 - external

JP4

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

IDE IOR signal from mainboard

J1

Pins 2 & 3 closed

 

IDE IOR signal from chipset

J1

Pins 1 & 2 closed

IDE IOW signal from mainboard

J2

Pins 2 & 3 closed

 

IDE IOW signal from chipset

J2

Pins 1 & 2 closed

Floppy drive order is normal (A:, B:)

JP6/A

Pins 1 & 2 closed

 

Floppy drive order is reversed (B:, A:)

JP6/A

Pins 2 & 3 closed

Floppy address is 3F0h

JP6/B

Pins 2 & 3 closed

 

Floppy address is 370h

JP6/B

Pins 1 & 2 closed

IDE(AT) interface enabled

JP6/C

Pins 1 & 2 closed

 

IDE(AT) interface disabled

JP6/C

Pins 2 & 3 closed

IDE(AT) address is 1F0h

JP6/D

Pins 2 & 3 closed

 

IDE(AT) address is 170h

JP6/D

Pins 1 & 2 closed

Floppy controller enabled

JP6/E

Pins 1 & 2 closed

 

Floppy controller disabled

JP6/E

Pins 2 & 3 closed

 

Parallel port is unidirectional

JP11

Closed

 

Parallel port is bidirectional

JP11

Open

 

Game port enabled

JP16

Closed

 

Game port disabled

JP16

Open

SERIAL PORT 1 ADDRESS SELECTION

Setting

JP9/A

JP9/B

3F8h (COM1:)

Pins 1 & 2 closed

Pins 2 & 3 closed

 

3E8h (COM3:)

Pins 2 & 3 closed

Pins 1 & 2 closed

 

2E8h (COM4:)

Pins 1 & 2 closed

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

Pins 2 & 3 closed

SERIAL PORT 2 ADDRESS SELECTION

Setting

JP9/C

JP9/D

2F8h (COM2:)

Pins 1 & 2 closed

Pins 2 & 3 closed

3E8h (COM3:)

Pins 1 & 2 closed

Pins 1 & 2 closed

2E8h (COM4:)

Pins 2 & 3 closed

Pins 1 & 2 closed

Disabled

Pins 2 & 3 closed

Pins 2 & 3 closed

PARALLEL PORT ADDRESS SELECTION

Setting

JP9/E

JP9/F

378h

Pins 2 & 3 closed

Pins 1 & 2 closed

 

278h

Pins 1 & 2 closed

Pins 2 & 3 closed

 

3BCh

Pins 1 & 2 closed

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

Pins 2 & 3 closed

SERIAL PORT 1 INTERRUPT SELECTION

Setting

JP12/A

JP12/B

JP12/C

 

IRQ3

Open

Closed

Open

IRQ4

Closed

Open

Open

 

IRQ5

Open

Open

Closed

SERIAL PORT 2 INTERRUPT SELECTION

Setting

JP12/A

JP12/B

JP12/C

IRQ3

Closed

Open

Open

 

IRQ4

Open

Closed

Open

 

IRQ5

Open

Open

Closed

PARALLEL PORT INTERRUPT SELECTION

Setting

JP12/G

JP12/H

 

IRQ5

Open

Closed

IRQ7

Closed

Open








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