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I/O PLUS II

AST RESEARCH, INC.

I/O PLUS II

Card Type

Multi I/O card

Chipset Controller

Unidentified

I/O Options

Apple game connector (2), IBM game connector, parallel port, serial port (2)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1 (DTE)

CN1

Apple II game connector

J5

Serial port 2 (DTE)

J2

Apple II game connector

J6

Serial port 2 (DCE)

J3

IBM game connector

J7

Parallel port

J4

   

SERIAL 1 PORT CONFIGURATION

COM

IRQ

J8/A

J8/B

J9/D

J9/E

COM 1

4

Closed

Open

Closed

Open

COM 2

3

Open

Closed

Open

Closed

Disabled

N/A

Open

Open

Open

Open

SERIAL PORT 2 CONFIGURATION

Setting

IRQ

J8/C

J9/F

Enabled

3S

Closed

Closed

Disabled

N/A

Open

Open

SERIAL PORT 2 DTE/DCE CONFIGURATION

Setting

C16

DCE

Pins 3 & 4 closed

DTE

Pins 1 & 2 closed

PARALLEL PORT CONFIGURATION

Port

IRQ

J8/D

J8/E

J9/A

1 (LPT1)

7

Open

Closed

Closed

2 (LPT2)

7

Closed

Open

Closed

Disabled

N/A

Open

Open

Open

GAME PORT CONFIGURATION

Setting

J8/F

Enabled

Closed

Disabled

Open

Note: There are two types of game ports on this card, an IBM & Apple type. When enabling the Apple game port (2) you must install a chip (74LS05) at U1. This chip must be removed when enabling the IBM game port.

FACTORY CONFIGURED - DO NOT ALTER

Jumper

Position

J9/B

N/A

J9/C

N/A

J9/G

N/A

J9/H

N/A