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I/O 450

BOCA RESEARCH, INC.

I/O 450

Card Type

Parallel/Serial card

Chip Set

AT-type GM 82C 455

Maximum Onboard Memory

None

I/O Options

Parallel port (2), serial port (2)

Data Bus

8-bit ISA

Floppy drives supported

None

CONNECTIONS

Function

Label

Function

Label

26-pin Parallel port 2

J1

9-pin serial port 1

J4

10-pin serial port 2

J3

25-pin parallel port 1

J7

USER CONFIGURABLE SETTINGS

Function

Label

Position

Serial port 1 enabled

J2/A

Pins 2 & 3 closed

 

Serial port 1 disabled

J2/A

Pins 1 & 2 closed

Serial port 2 enabled

J2/B

Pins 2 & 3 closed

 

Serial port 2 disabled

J2/B

Pins 1 & 2 closed

Parallel port 1 enabled

J2/C

Pins 2 & 3 closed

 

Parallel port 1 disabled

J2/C

Pins 1 & 2 closed

Parallel port 2 enabled

J2/D

Pins 2 & 3 closed

 

Parallel port 2 disabled

J2/D

Pins 1 & 2 closed

SERIAL PORT 1 ADDRESS SELECTION

Setting

J2/E

COM1 (3F8h)

Pins 2 & 3 closed

 

COM3 (3E8h)

Pins 1 & 2 closed

SERIAL PORT 2 ADDRESS SELECTION

Setting

J2/F

COM2 (2F8h)

Pins 2 & 3 closed

 

COM4 (2E8h)

Pins 1 & 2 closed

PARALLEL PORT 1 INTERRUPT SELECTION

IRQ

J2/G

 

5

Pins 2 & 3 closed

7

Pins 1 & 2 closed

PARALLEL PORT 2 INTERRUPT SELECTION

IRQ

J2/H

5

Pins 2 & 3 closed

 

7

Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

J2/I

J2/J

J2/K

J2/L

 

3

Pins 2 & 3 closed

Open

Open

Open

4

Open

Pins 2 & 3 closed

Open

Open

 

5

Open

Open

Pins 2 & 3 closed

Open

 

9

Open

Open

Open

Pins 2 & 3 closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

J2/I

J2/J

J2/K

J2/L

3

Pins 1 & 2closed

Open

Open

Open

 

4

Open

Pins 1 & 2 closed

Open

Open

 

5

Open

Open

Pins 1 & 2 closed

Open

 

9

Open

Open

Open

Pins 1 & 2 closed