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MS-422 PLUS

DIAMOND FLOWER, INC.

MS-422 PLUS

Card Type

Multi I/O

Chipset/Controller

NS16550AN

I/O Options

Serial ports (2)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

J2

Serial port 2

J1

SERIAL PORT CONFIGURATION

Port 1(J2)

Port 2 (J1)

SW2/1

SW2/2

COM1

COM2

Off

Off

 

COM1

Disabled

On

Off

 

COM2

COM3

Off

On

 

COM3

COM4

On

On

SERIAL PORT INTERRUPT SELECT

Port 1(J2)

Port 2 (J1)

SW2/3

SW2/4

SW2/5

SW2/6

IRQ4

IRQ3

On

Off

Off

On

 

IRQ3

IRQ4

Off

On

On

Off

 

Disabled

Disabled

Off

Off

Off

Off

DMA SELECT

Port 1 (J1)

Port 2 (J2)

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

Receiver

Receiver

On

On

Off

Off

On

On

Off

Off

Transmitter

Transmitter

Off

Off

On

On

Off

Off

On

On

DMA PORT AND CHANNEL CONFIGURATION

Port 1 (J1)

Port 2 (J2)

JP1

JP2

JP11

JP12

DMA 1

DMA 3

Closed

Closed

Open

Open

DMA 3

N/A

Open

Closed

Closed

Closed

DMA 1

N/A

Closed

Open

Open

Open

N/A

DMA 1

Closed

Open

Closed

Closed

N/A

DMA 3

Open

Closed

Open

Open

RS-422/RS-232 INTERFACE SELECT

Port 1 (J1)

Port 2 (J2)

JP8/A-J

JP9/A-J

RS-422

RS-422

Pins 1 & 2 closed

Pins 1 & 2 closed

 

RS-422

RS-232

Pins 1 & 2 closed

Pins 2 & 3 closed

 

RS-232

RS-422

Pins 2 & 3 closed

Pins 1 & 2 closed

 

RS-232

RS-232

Pins 2 & 3 closed

Pins 2 & 3 closed

RS-422 DRIVER SELECT

Port 1 (J1)

Port 2 (J2)

JP5

JP3

Always on

Always on

Open

Open

 

Always Off

Always Off

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Controlled by RTS

Controlled by RTS

Pins 1 & 2 closed

Pins 1 & 2 closed

RS-232/RS-422 NORMAL SET SELECT

Port 1 (J1)

Port 2 (J2)

JP6

JP4

RS-422

RS--422

Pins 2 & 3, 4 & 5 closed

Pins 2 & 3, 4 & 5 closed

 

RS-422

RS-232

Pins 2 & 3, 4 & 5 closed

Pins 1 & 2, 5 & 6 closed

 

RS-232

RS-422

Pins 1 & 2, 5 & 6 closed

Pins 2 & 3, 4 & 5 closed

 

RS-232

RS-232

Pins 1 & 2, 5 & 6 closed

Pins 1 & 2, 5 & 6 closed

CLOCK SPEED SELECT

Speed

JP7

1.8432MHz

Pins 1 & 2 closed

 

8.00MHz

Pins 2 & 3 closed

SIGNAL GROUND CONFIGURATION

Setting

JP10

Connected

Closed

 

Isolated

Open