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DIGICHANNEL PC/4

DIGI INTERNATIONAL, INC.

DIGICHANNEL PC/4

Card Type

Serial

Chip Set

Unidentified

I/O Options

Serial ports (4)

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

Function

Label

Odd-interrupt daisy chain connector

P2

Serial ports via DB-78 connector

P4

Even-interrupt daisy chain connector

P3

   

Note:Standard DB-25 or RJ-45 serial ports are provided on an included adapter cable.

See the daisy chain configuration table for more information about P2 and P3.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Port 1 uses interrupt table 1 (odd interrupts)

J1

Pins 1 & 2 closed

 

Port 1 uses interrupt table 2 (even interrupts)

J1

Pins 2 & 3 closed

Port 2 uses interrupt table 1

J2

Pins 1 & 2 closed

 

Port 2 uses interrupt table 2

J2

Pins 2 & 3 closed

Port 3 uses interrupt table 1

J3

Pins 1 & 2 closed

 

Port 3 uses interrupt table 2

J3

Pins 2 & 3 closed

Port 4 uses interrupt table 1

J4

Pins 1 & 2 closed

 

Port 4 uses interrupt table 2

J4

Pins 2 & 3 closed

Factory configured - do not alter

SW1/8

On

Factory configured - do not alter

SW1/9

On

Port 1 enabled

SW2/8

On

 

Port 1 disabled

SW2/8

Off

Port 2 enabled

SW3/8

On

 

Port 2 disabled

SW3/8

Off

Port 3 enabled

SW4/8

On

 

Port 3 disabled

SW4/8

Off

Port 4 enabled

SW5/8

On

 

Port 4 disabled

SW5/8

Off

BOARD NUMBER

Setting

J9

J10

0

Pins 2 & 3 closed

Pins 2 & 3 closed

1

Pins 2 & 3 closed

Pins 1 & 2 closed

2

Pins 1 & 2 closed

Pins 2 & 3 closed

3

Pins 1 & 2 closed

Pins 1 & 2 closed

STATUS REGISTER ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/10

000h

On

On

On

On

On

On

On

On

008h

On

On

On

On

On

On

Off

On

010h

On

On

On

On

On

Off

On

On

018h

On

On

On

On

On

Off

Off

On

020h

On

On

On

On

Off

On

On

On

3D8h

Off

Off

Off

Off

On

Off

Off

On

3E0h

Off

Off

Off

Off

Off

On

On

On

3E8h

Off

Off

Off

Off

Off

On

Off

On

3F0h

Off

Off

Off

Off

Off

Off

On

On

3F8h

Off

Off

Off

Off

Off

Off

Off

On

Disabled

Off

Off

Off

Off

Off

Off

Off

Off

Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/1 is the Most Significant Bit and switch SW1/7 is the Least Significant Bit. The switches have the following decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16, SW1/7=8. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0) SW1/10 must always be on.

PORT ADDRESSES

Setting

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

000h

On

On

On

On

On

On

On

008h

On

On

On

On

On

On

Off

010h

On

On

On

On

On

Off

On

018h

On

On

On

On

On

Off

Off

020h

On

On

On

On

Off

On

On

3D8h

Off

Off

Off

Off

On

Off

Off

3E0h

Off

Off

Off

Off

Off

On

On

3E8h

Off

Off

Off

Off

Off

On

Off

3F0h

Off

Off

Off

Off

Off

Off

On

3F8h

Off

Off

Off

Off

Off

Off

Off

Note:The function of switches SW3-SW5 are identical to the function of SW2. The function of SW2 is to configure port 1. The functions of switches SW3 through SW5 are to configure ports 2 through 4 respectively.

A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SWx/1 is the Most Significant Bit and switch SWx/7 is the Least Significant Bit. The switches have the following decimal values: SWx/1=512, SWx/2=256, SWx/3=128, SWx/4=64, SWx/5=32, SWx/6=16, SWx/7=8. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

INTERRUPT (TABLE 1)

Setting

J85

J86

J87

J88

J89

J90

IRQ3

Closed

Open

Open

Open

Open

Open

IRQ5

Open

Closed

Open

Open

Open

Open

IRQ7

Open

Open

Closed

Open

Open

Open

Disabled

Open

Open

Open

Open

Open

Open

INTERRUPT (TABLE 2)

Setting

J85

J86

J87

J88

J89

J90

IRQ2

Open

Open

Open

Open

Open

Closed

IRQ4

Open

Open

Open

Open

Closed

Open

IRQ6

Open

Open

Open

Closed

Open

Open

Disabled

Open

Open

Open

Open

Open

Open

DAISY CHAIN CONFIGURATION

Setting

P2

P3

No daisy chain

Pins 2 & 3 closed

Pins 2 & 3 closed

Board is set to odd interrupt

Connected to P2 on next board

Pins 2 & 3 closed

Board is set to even interrupt

Pins 2 & 3 closed

Connected to P3 on next board

Note:When using the daisy-chain connectors, the board may only use one interrupt. Up to four boards may be daisy-chained. Daisy-chaining boards to operate as one unit will only function under MS-DOS and compatible operating systems.