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I/O PLUS IO card Settings and Configuration






UNIDENTIFIED

I/O PLUS

Card Type

Multi I/O card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (2), Parallel port, Apple II game port (2), PC game port

Data Bus

8-bit ISA

Card Size

Half length, half height

CONNECTIONS

Function

Label

Function

Label

Serial port 1

J1

Apple II game port 1

J5

Serial port 2 (DTE configuration)

J2

Apple II game port 2

J6

Serial port 2 (DCE configuration)

J3

PC game port

J7

Parallel port

J4

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Game port enabled

JP2/G

Closed

Game port disabled

JP2/G

Open

PARALLEL PORT ADDRESS SELECTION

Setting

Label

Position

LPT1 enabled

JP2/P1

Closed

LPT1 disabled

JP2/P1

Open

LPT 2 enabled

JP2/P2

Closed

LPT 2 disabled

JP2/P2

Open

SERIAL PORT 1 ADDRESS SELECTION

Setting

Label

Position

COM1 enabled

JP2/C1

Closed

COM1 disabled

JP2/C1

Open

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

Label

Position

IRQ4 enabled

JP1/4

Closed

IRQ4 disabled

JP1/4

Open

SERIAL PORT 2 SETTINGS (S - OPTION)

IRQ

Label

Position

IRQ3 enabled

JP1/3S

Closed

IRQ3 disabled

JP1/3S

Open

COM2 enabled

JP2/S2

Closed

COM2 disabled

JP2/S2

Open

Note: These options are only used when the board was received as an option S.

PARALLEL PORT INTERRUPT SELECTION

IRQ

Label

Position

IRQ7 enabled

JP1/7

Closed

IRQ7 disabled

JP1/7

Open

Note: LPT is only on Rev. D and up boards.

MISCELLANEOUS TECHNICAL NOTES

Note: To use the Apple II joystick(s) IC 746505 must be installed at U1. This IC is not required when using an IBM-type joystick.








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