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PCCOM 8-BIT ISA 4-PORT RS-232

DECISION COMPUTER INTERNATIONAL CO., LTD.

PCCOM 8-BIT ISA 4-PORT RS-232

Card Type

Serial

Chipset

Unidentified

I/O Options

Serial ports (4 RS-232)

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

Serial ports via DB-37 connector

J

Note:Standard DB-25 serial ports are provided on an included adapter cable.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

»

Bus speed is less than 16MHz

JP1

Pins 1 & 3 closed

 

Bus speed is 16MHz or greater

JP1

Pins 2 & 4 closed

»

Normal operation

JP3

Pins 1 & 2 closed

 

PC-MOS/386 mode

JP3

Pins 2 & 3 closed

SERIAL PORT ADDRESSES/INTERRUPTS

Option

Port 1

IRQ

Port 2

IRQ

Port 3

Port 4

 

1

3F8h (COM1:)

4

2F8h (COM2:)

3

1B0h

1B8h

 

2

3F8h (COM1:)

4

2F8h (COM2:)

3

2B0h

2B8h

»

3

1A0h

SW1

1A8h

SW1

1B0h

1B8h

 

4

2A0h

SW1

2A8h

SW1

2B0h

2B8h

Note:The interrupt for port 3 and port 4 is always set by SW1.

SERIAL PORT ADDRESSES/INTERRUPTS (CON’T)

Option

JP2

SW1/7

SW1/8

 

1

Pins 1 & 2, 3 & 4 closed

On

Off

 

2

Pins 1 & 2, 3 & 4 closed

On

On

»

3

Open

Off

Off

 

4

Open

Off

On

INTERRUPT

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

IRQ2

On

Off

Off

Off

Off

Off

IRQ3

Off

On

Off

Off

Off

Off

IRQ4

Off

Off

On

Off

Off

Off

IRQ5

Off

Off

Off

On

Off

Off

IRQ6

Off

Off

Off

Off

On

Off

IRQ7

Off

Off

Off

Off

Off

On