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TWINCOM A.2

SIIG, INC.

TWINCOM A.2

Card Type

Serial interface

Chipset Controller

Unidentified

I/O Options

Serial ports (2)

Maximum Dram

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

J1

Serial port 2

J2

PORT 1 CONFIGURATION

Port

jP3

COM1

Pins 5 & 9 closed

COM2

Pins 6 & 10 closed

COM3

Pins 7 & 11 closed

COM4

Pins 8 & 12 closed

Disabled

Open

PORT 1 INTERRUPT CONFIGURATION

IRQ

jP4

2

Pins 1 & 5 closed

3

Pins 2 & 6 closed

4

Pins 5 & 9 closed

5

Pins 6 & 10 closed

Disabled

Open

PORT 2 CONFIGURATION

Port

jP3

COM1

Pins 1 & 5 closed

COM2

Pins 2 & 6 closed

COM3

Pins 3 & 7 closed

COM4

Pins 4 & 8closed

Disabled

Open

PORT 2 INTERRUPT CONFIGURATION

IRQ

jP4

2

Pins 3 & 7 closed

3

Pins 4 & 8 closed

4

Pins 7 & 11 closed

5

Pins 8 & 12 closed

Disabled

Open

SECOND SERIAL PORT ACTIVATION

To activate the second serial port, the following chips must be installed:

Chip

Socket

16450 ASIC

U1

1488

U2

1489

U3