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RS-232C ADAPTER

DIAMOND FLOWER, INC.

RS-232C ADAPTER

Card Type

Serial interface

Chipset Controller

Unidentified

I/O Options

Serial ports (2)

Maximum Dram

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

J1

Serial port 2

J2

INTERRUPT SELECTION

Port 1

Port 2

SW1/5

SW1/6

SW1/7

SW1/8

IRQ4

IRQ3

On

Off

Off

On

IRQ3

IRQ4

Off

On

On

Off

Disabled

Disabled

Off

Off

Off

Off

ADDRESS SELECTION

Port 1

Port 2

SW1/1

SW1/2

SW1/3

SW1/4

3F8 (COM1:)

2F8 (COM2:)

On

Off

On

Off

3F8 (COM1:)

2E8 (COM4:)

On

Off

Off

On

3E8 (COM3:)

2F8 (COM2:)

Off

On

On

Off

3E8 (COM3:)

2E8 (COM4:)

Off

On

Off

On

Disabled

Disabled

Off

Off

Off

Off

CHIP INSTALLATION

Chip

Location

8250

IC4

1488

IC2 (location unidentified)

1489

U9 (location unidentified)

Note: These chips must be installed for the second serial port to be enabled.