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UN-451 IO card Settings and Configuration






MICRO EQUIPMENT CORPORATION

UN-451

Card Type

Multi I/O card

Chipset/Controller

Unknown

I/O Options

Game port, parallel port, serial ports (2)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

CN1

Serial port 1

ASYN1

Game port

CN2

Serial port 2 (optional)

ASYN2

PARALLEL PORT CONFIGURATION

LPT/Address/IRQ

JP1

LPT1/378h/IRQ7

Pins 5 & 6/2 & 3 closed

 

LPT2/278h/IRQ5

Pins 4 & 5/1 & 2 closed

 

Disable

Pins 4, 5, & 6/1, 2, & 3 all open

SERIAL PORT 1 (ASYN1) CONFIGURATION

COM/Address/IRQ

JP1

COM1/3F8h/IRQ4

Pins 20 & 21/10 & 11 closed

 

COM2/2F8h/IRQ3

Pins 16 & 17/11 & 12 closed

 

COM4/2E8h/IRQ3

Pins 19 & 20/11 & 12 closed

 

Disable

Pins 16 & 17/19, 20, & 21/10, 11, & 12 all open

SERIAL PORT 2 (ASYN2) CONFIGURATION

COM/Address/IRQ

JP1

COM2/2F8h/IRQ3

Pins 17 & 18/8 & 9 closed

 

COM3/3E8h/IRQ4

Pins 13 & 14/7 & 8 closed

 

COM4/2E8h/IRQ3

Pins 14 & 15/8 & 9 closed

 

Disable

Pins 17 & 18/13, 14, & 15/7, 8, & 9 all open

MISCELLANEOUS TECHNICAL NOTES

Serial port 2 (ASYN2) exists only on model UN451b. Model UN-451a has only one serial port

The pin numbers for JP1 printed on the actual card are incorrect. Use the numbers depicted on the above diagram to re-configure the card.

The game port can be disabled by cutting a wire on the soldering side of the card. It is located near the edge opposite of the external ports and toward the center.








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