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ISI552PC

MULTI-TECH SYSTEMS, INC.

ISI552PC

Card Type

Serial interface

Chipset Controller

Unidentified

I/O Options

Serial ports (2)

Maximum Dram

N/A

CONNECTIONS

Purpose

Location

Serial port 1

J1

Serial port 2

J2

FACTORY CONFIGURED-DO NOT ALTER

Switch

Setting

SW1/8

Off

PORT 1 INTERRUPT SELECTION

IRQ

JP1

2

Pins 1 & 2 closed

3

Pins 3 & 4 closed

4

Pins 5 & 6 closed

5

Pins 7 & 8 closed

7

Pins 9 & 10 closed

10

Pins 11 & 12 closed

11

Pins 13 & 14 closed

12

Pins 15 & 16 closed

15

Pins 17 & 18 closed

PORT 1 INTERRUPT SELECTION

IRQ

JP1

2

Pins 1 & 2 closed

3

Pins 3 & 4 closed

4

Pins 5 & 6 closed

5

Pins 7 & 8 closed

7

Pins 9 & 10 closed

10

Pins 11 & 12 closed

11

Pins 13 & 14 closed

12

Pins 15 & 16 closed

15

Pins 17 & 18 closed

PORT 1 ADDRESS SELECT

Address

SW1/7

SW1/6

SW1/5

SW1/4

SW1/3

SW1/2

SW1/1

100h

Off

Off

On

Off

Off

Off

Off

108h

Off

Off

On

Off

Off

Off

On

110h

Off

Off

On

Off

Off

On

Off

118h

Off

Off

On

Off

Off

On

On

2E8h (COM4:)

On

Off

On

On

On

Off

On

2F8h (COM2:)

On

Off

On

On

On

On

On

3E0

On

On

On

On

On

Off

Off

3E8h (COM3:)

On

On

On

On

On

Off

On

3F0h

On

On

On

On

On

On

Off

3F8h (COM1:)

On

On

On

On

On

On

On

Note: A total of 752 memory base address settings are available. The switches are a binary representation of the decimal addresses. Switch 1 is the Least Significant Bit and switch 7 is the Most Significant Bit. The switches have the following decimal values: switch 1=8, 2=16, 3=32, 4=64, 5=128, 6=256, 7=512. Add the values of the on switches to obtain the correct memory address. (Off=0, On=1)

PORT 2 ADDRESS SELECT

Address

SW2/7

SW2/6

SW2/5

SW2/4

SW2/3

SW2/2

SW2/1

100h

Off

Off

On

Off

Off

Off

Off

108h

Off

Off

On

Off

Off

Off

On

110h

Off

Off

On

Off

Off

On

Off

118h

Off

Off

On

Off

Off

On

On

2E8h (COM4:)

On

Off

On

On

On

Off

On

2F8h (COM2:)

On

Off

On

On

On

On

On

3E0

On

On

On

On

On

Off

Off

3E8h (COM3:)

On

On

On

On

On

Off

On

3F0h

On

On

On

On

On

On

Off

3F8h (COM1:)

On

On

On

On

On

On

On

Note: A total of 752 memory base address settings are available. The switches are a binary representation of the decimal addresses. Switch 1 is the Least Significant Bit and switch 7 is the Most Significant Bit. The switches have the following decimal values: switch 1=8, 2=16, 3=32, 4=64, 5=128, 6=256, 7=512. Add the values of the on switches to obtain the correct memory address. (Off=0, On=1)