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SDLC ADAPTER (ORIGINAL)

ATTACHMATE CORPORATION

SDLC ADAPTER (ORIGINAL)

Card Type

Serial card

Chip Set

Unidentified

Data Bus

8-bit ISA

CONNECTIONS

Function

Label

25-pin serial port

CN1

DMA CHANNEL SELECTION

Channel

JP2

JP4

1

Pins 1 & 2 closed

Pins 1 & 2 closed

2

Pins 3 & 4 closed

Pins 3 & 4 closed

3

Pins 5 & 6 closed

Pins 5 & 6 closed

None

Open

Open

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

 

0h

On

On

On

On

On

 

20h

On

On

On

On

Off

 

40h

On

On

On

Off

On

 

60h

On

On

On

Off

Off

 

80h

On

On

Off

On

On

300h

Off

Off

On

On

On

 

360h

Off

Off

On

Off

Off

 

380h

Off

Off

Off

On

On

 

3A0h

Off

Off

Off

On

Off

 

3C0h

Off

Off

Off

Off

On

 

3E0h

Off

Off

Off

Off

Off

Note: A total of 32 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/10 is the Most Significant Bit and switch SW1/5 is the Least Significant Bit. The switches have the following decimal values: SW1/5=512, SW1/4=256, SW1/3=128, SW1/2=64, SW1/1=326. Turn off the switches and add the values of the switches to 512 and convert to hexadecimal to obtain the correct memory address. (Off=1, On=0)

SERIAL PORT INTERRUPT SELECTION

IRQ

JP3

IRQ2

Pins 1 & 2 closed

IRQ3

Pins 3 & 4 closed

IRQ4

Pins 5 & 6 closed

IRQ5

Pins 7 & 8 closed