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PC/8

DIGI INTERNATIONAL, INC.

PC/8

Card Type

Serial card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (8 RS-232),

Hard Drives supported

None

Floppy drives supported

None

Data Bus

8-bit ISA

Card Size

Full-length

CONNECTIONS

Function

Label

Function

Label

78-pin cable connector

CN1

Daisy chain cable connector

P2

Daisy chain cable connector

P1

 

 

Note: Pins 2 & 3 of connectors P1 & P2 are closed when in single board configuration.

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

DS1/8

On

Factory configured - do not alter

DS1/9

On

 

Interrupt status register enabled

DS1/10

On

 

Interrupt status register disabled

DS1/10

Off

PORT ENABLING SELECTION

Port

Label

Position

Port 1 enabled

DS2/8

On

Port 1 disabled

DS2/8

Off

Port 2 enabled

DS3/8

On

Port 2 disabled

DS3/8

Off

Port 3 enabled

DS4/8

On

Port 3 disabled

DS4/8

Off

Port 4 enabled

DS5/8

On

Port 4 disabled

DS5/8

Off

Port 5 enabled

DS6/8

On

Port 5 disabled

DS6/8

Off

Port 6 enabled

DS7/8

On

Port 6 disabled

DS7/8

Off

Port 7 enabled

DS8/8

On

Port 7 disabled

DS8/8

Off

Port 8 enabled

DS9/8

On

Port 8 disabled

DS9/8

Off

BOARD INDENTIFICATION SELECTION

ID

J9

J10

Board 0

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Board 1

Pins 2 & 3 closed

Pins 1 & 2 closed

 

Board 2

Pins 1 & 2 closed

Pins 2 & 3 closed

 

Board 3

Pins 1 & 2 closed

Pins 1 & 2 closed

Note: The primary board in the daisy chain must remain on the default setting.

INTTERRUPT STATUS REGISTER BASE I/O ADDRESS SELECTION

Setting

DS1/1

DS1/2

DS1/3

DS1/4

DS1/5

DS1/6

DS1/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS1/1 is the Most Significant Bit and switch DS1/7 is the Least Significant Bit. The switches have the following decimal values:DS1/1=512, DS1/2=256, DS1/3=128, DS1/4=64, DS1/5=32, DS1/6=16, DS1/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 1 BASE I/O ADDRESS SELECTION

Setting

DS2/1

DS2/2

DS2/3

DS2/4

DS2/5

DS2/6

DS2/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS2/1 is the Most Significant Bit and switch DS2/7 is the Least Significant Bit. The switches have the following decimal values:DS2/1=512, DS2/2=256, DS2/3=128, DS2/4=64, DS2/5=32, DS2/6=16, DS2/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 2 BASE I/O ADDRESS SELECTION

Setting

DS3/1

DS3/2

DS3/3

DS3/4

DS3/5

DS3/6

DS3/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS3/1 is the Most Significant Bit and switch DS3/7 is the Least Significant Bit. The switches have the following decimal values:DS3/1=512, DS3/2=256, DS3/3=128, DS3/4=64, DS3/5=32, DS3/6=16, DS3/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 3 BASE I/O ADDRESS SELECTION

Setting

DS4/1

DS4/2

DS4/3

DS4/4

DS4/5

DS4/6

DS4/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS4/1 is the Most Significant Bit and switch DS4/7 is the Least Significant Bit. The switches have the following decimal values:DS4/1=512, DS4/2=256, DS4/3=128, DS4/4=64, DS4/5=32, DS4/6=16, DS4/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 4 BASE I/O ADDRESS SELECTION

Setting

DS5/1

DS5/2

DS5/3

DS5/4

DS5/5

DS5/6

DS5/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS5/1 is the Most Significant Bit and switch DS5/7 is the Least Significant Bit. The switches have the following decimal values:DS5/1=512, DS5/2=256, DS5/3=128, DS5/4=64, DS5/5=32, DS5/6=16, DS5/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 5 BASE I/O ADDRESS SELECTION

Setting

DS6/1

DS6/2

DS6/3

DS6/4

DS6/5

DS6/6

DS6/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS6/1 is the Most Significant Bit and switch DS6/7 is the Least Significant Bit. The switches have the following decimal values:DS6/1=512, DS6/2=256, DS6/3=128, DS6/4=64, DS6/5=32, DS6/6=16, DS6/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 6 BASE I/O ADDRESS SELECTION

Setting

DS7/1

DS7/2

DS7/3

DS7/4

DS7/5

DS7/6

DS7/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS7/1 is the Most Significant Bit and switch DS7/7 is the Least Significant Bit. The switches have the following decimal values:DS7/1=512, DS7/2=256, DS7/3=128, DS7/4=64, DS7/5=32, DS7/6=16, DS7/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 7 BASE I/O ADDRESS SELECTION

Setting

DS8/1

DS8/2

DS8/3

DS8/4

DS8/5

DS8/6

DS8/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS8/1 is the Most Significant Bit and switch DS8/7 is the Least Significant Bit. The switches have the following decimal values:DS8/1=512, DS8/2=256, DS8/3=128, DS8/4=64, DS8/5=32, DS8/6=16, DS8/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

PORT 8 BASE I/O ADDRESS SELECTION

Setting

DS9/1

DS9/2

DS9/3

DS9/4

DS9/5

DS9/6

DS9/7

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: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. DS9/1 is the Most Significant Bit and switch DS9/7 is the Least Significant Bit. The switches have the following decimal values:DS9/1=512, DS9/2=256, DS9/3=128, DS9/4=64, DS9/5=32, DS9/6=16, DS9/7=8. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

SERIAL PORT INTERRUPT SELECTION

IRQ

J85

J86

J87

J88

J89

J90

IRQ2

Open

Open

Open

Open

Open

Closed

IRQ3

Closed

Open

Open

Open

Open

Open

IRQ4

Open

Open

Open

Open

Closed

Open

IRQ5

Open

Closed

Open

Open

Open

Open

IRQ6

Open

Open

Open

Closed

Open

Open

IRQ7

Open

Open

Closed

Open

Open

Open

Note: Ports 1-8 must be set to accept either an odd or even interrupt. J1-J8 corresponds to ports 1-8. Place jumper on pins 1 & 2 for an odd interrupt or pins 2 & 3 for an even interrupt.