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MU-440

DIAMOND FLOWER, INC.

MU-440

Card Type

Serial controller

Chipset/Controller

Unidentified UART

I/O Options

Serial I/O ports (4)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 3

J1

Serial port 2

J3

Serial port 4

J2

Serial port 1

J4

COMPATIBLE MODE ADDRESS SELECT

Port 1 (J4)

Port 2 (J3)

Port 3 (J1)

Port 4 (J2)

SW1/1

SW1/2

SW1/3

3F8h

2F8h

3E0h

3E8h

Off

Off

Off

3F8h

2F8h

2B0h

2B8h

On

Off

Off

3F8h

2F8h

1B0h

1B8h

Off

On

Off

EXPANDED MODE ADDRESS SELECT

Port 1 (J4)

Port 2 (J3)

Port 3 (J1)

Port 4 (J2)

SW1/1

SW1/2

SW1/3

280h

288h

290h

298h

On

On

Off

3E0h

3E8h

2E0h

2E8h

Off

Off

On

2A0h

2A8h

2B0h

2B8h

On

Off

On

1A0h

1A8h

2A0h

2A8h

Off

On

On

INTERRUPT SELECT

IRQ

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

IRQ5

Off

Off

Off

On

Off

 

IRQ2

On

Off

Off

Off

Off

 

IRQ3

Off

On

Off

Off

Off

 

IRQ4

Off

Off

On

Off

Off

 

IRQ7

Off

Off

Off

Off

On

PRIMARY PORT NORMAL/FORCED TRUE SELECT

Setting

JP7/A

JP7/B

JP7/C

Normal

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Forced True

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

PRIMARY PORT DTE/DCE SELECT

Jumper JP8

DTE

DCE

SECOND PORT NORMAL/FORCED TRUE SELECT

Setting

JP6/A

JP6/B

JP6/C

Normal

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Forced True

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

SECOND PORT DTE/DCE SELECT

Jumper JP5

DTE

DCE

THIRD PORT NORMAL/FORCED TRUE SELECT

Setting

JP1/A

JP1/B

JP1/C

Normal

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Forced True

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

THIRD PORT DTE/DCE SELECT

Jumper JP3

DTE

DCE

FOURTH PORT NORMAL/FORCED TRUE SELECT

Setting

JP2/A

JP2/B

JP2/C

Normal

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Forced True

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

FOURTH PORT DTE/DCE SELECT

Jumper JP4

DTE

DCE