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isi551pc

Multi-tech systems, inc.

isi551pc

Card Type

Serial interface

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial port

Data Bus

16-bit ISA (EISA also available)

CONNECTIONS

Purpose

Location

Serial port 1

J1

USER CONFIGURABLE SETTINGS

 

Label

Location

Factory configured do not alter

SW1/8

On

PORT 1 ADDRESS SELECTION

IRQ

JP1/

Pins 1 & 2

JP1/

Pins 3 & 4

JP1/

Pins 5 & 6

JP1/

Pins 7 & 8

JP1/

Pins 9 & 10

2

Closed

Open

Open

Open

Open

3

Open

Closed

Open

Open

Open

4

Open

Open

Closed

Open

Open

5

Open

Open

Open

Closed

Open

7

Open

Open

Open

Open

Closed

10

Open

Open

Open

Open

Open

11

Open

Open

Open

Open

Open

12

Open

Open

Open

Open

Open

15

Open

Open

Open

Open

Open

PORT 1 ADDRESS SELECTION (CONTINUED)

IRQ

JP1/

Pins 11 & 12

JP1/

Pins 13 & 14

JP1/

Pins 15 & 16

JP1/

Pins 17 & 18

2

Open

Open

Open

Open

3

Open

Open

Open

Open

4

Open

Open

Open

Open

5

Open

Open

Open

Open

7

Open

Open

Open

Open

10

Closed

Open

Open

Open

11

Open

Closed

Open

Open

12

Open

Open

Closed

Open

15

Open

Open

Open

Closed

SERIAL PORT ADDRESS SELECT

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

 

100h

On

On

On

On

On

Off

On

 

108h

Off

On

On

On

On

Off

On

 

110h

On

Off

On

On

On

Off

On

 

118h

Off

Off

On

On

On

Off

On

 

120h

On

On

Off

On

On

Off

On

 

2E8h (COM 4:)

Off

On

Off

Off

Off

On

Off

2F8h (COM 2:)

Off

Off

Off

Off

Off

On

Off

 

3D8h

Off

Off

On

Off

Off

Off

Off

 

3E0h

On

On

Off

Off

Off

Off

Off

 

3E8h (COM 3:)

Off

On

Off

Off

Off

Off

Off

 

3F0h

On

Off

Off

Off

Off

Off

Off

 

3F8h (COM 1:)

Off

Off

Off

Off

Off

Off

Off

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=1, On=0)

MISCELLANEOUS TECHNICAL NOTES

Orientation of SW1 may vary in different revisions.