BOCA RESEARCH, INC.

IO 2 BY 4

Card Type

Multi I/O card

Chipset/Controller

16C550

I/O Options

Parallel ports (2), serial ports (4)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

I/O connector 1

CN1

I/O connector 2

CN2

SERIAL PORT CONFIGURATION

Port

Status

J3/A

J3/B

J3/C

J3/D

1

Enabled

Closed

N/A

N/A

N/A

1

Disabled

Open

N/A

N/A

N/A

2

Enabled

N/A

Closed

N/A

N/A

2

Disabled

N/A

Open

N/A

N/A

3

Enabled

N/A

N/A

Closed

N/A

3

Disabled

N/A

N/A

Open

N/A

4

Enabled

N/A

N/A

N/A

Closed

4

Disabled

N/A

N/A

N/A

Open

PRIMARY SERIAL PORT INTERRUPT SELECT

IRQ

J4/Q

J4/R

J4/S

J4/T

»

IRQ4

Open

Closed

Open

Open

 

IRQ2

Open

Open

Open

Closed

 

IRQ3

Open

Open

Closed

Open

 

IRQ5

Closed

Open

Open

Open

SECOND SERIAL PORT INTERRUPT SELECT

IRQ

J4/M

J4/N

J4/O

J4/P

»

IRQ3

Open

Open

Closed

Open

 

IRQ2

Open

Open

Open

Closed

 

IRQ4

Open

Closed

Open

Open

 

IRQ5

Closed

Open

Open

Open

THIRD SERIAL PORT INTERRUPT SELECT

IRQ

J4/I

J4/J

J4/K

J4/L

IRQ2

Open

Open

Open

Closed

IRQ3

Open

Open

Closed

Open

IRQ4

Open

Closed

Open

Open

IRQ5

Closed

Open

Open

Open

FOURTH SERIAL PORT INTERRUPT SELECT

IRQ

J4/E

J4/F

J4/G

J4/H

IRQ2

Open

Open

Open

Closed

IRQ3

Open

Open

Closed

Open

IRQ4

Open

Closed

Open

Open

IRQ5

Closed

Open

Open

Open

PARALLEL PORT CONFIGURATION

Port 1

J3/E

Port 2

J3/F

»

Enabled

Closed

Enabled

Closed

 

Disabled

Open

Disabled

Open

PARALLEL PORT INTERRUPT SELECT

Port 1

J4/C

J4/D

Port 2

J4/A

J4/B

»

IRQ7

Closed

Open

IRQ5

Open

Closed

 

IRQ5

Open

Closed

IRQ7

Closed

Open