ATTACHMATE CORPORATION
ASYNCHRONOUS SNA ADAPTER
|
Card Type |
Serial card |
|
Chip Set |
Unidentified |
|
Data Bus |
8-bit ISA |
|
CONNECTIONS | |
|
Function |
Label |
|
Connector |
CN1 |
|
BASE I/O ADDRESS SELECTION | ||||||
|
Setting |
SW1/6 |
SW1/7 |
SW1/8 |
SW1/9 |
SW1/10 | |
|
208 |
On |
On |
On |
On |
On | |
|
218 |
On |
On |
On |
On |
Off | |
|
228 |
On |
On |
On |
Off |
On | |
|
238 |
On |
On |
On |
Off |
Off | |
|
248 |
On |
On |
Off |
On |
On | |
|
338 |
Off |
On |
On |
Off |
Off | |
|
3B8 |
Off |
Off |
On |
Off |
Off | |
|
3C8 |
Off |
Off |
Off |
On |
On | |
|
3D8 |
Off |
Off |
Off |
On |
Off | |
|
3E8 |
Off |
Off |
Off |
Off |
On | |
|
3F8 |
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: SW1/10=256, SW1/9=128, SW8/10=64, SW1/7=32, SW1/6=16. 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) | ||||||
|
MEMORY ADDRESS SELECTION | ||||||
|
Setting |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 | |
|
83FFF |
On |
On |
On |
On |
On | |
|
87FFF |
On |
On |
On |
On |
Off | |
|
8BFFF |
On |
On |
On |
Off |
On | |
|
8FFFF |
On |
On |
On |
Off |
Off | |
|
93FFF |
On |
On |
Off |
On |
Off | |
|
D3FFF |
Off |
On |
Off |
On |
On | |
|
EFFFF |
Off |
Off |
On |
Off |
Off | |
|
F3FFF |
Off |
Off |
Off |
On |
On | |
|
F7FFF |
Off |
Off |
Off |
On |
Off | |
|
FBFFF |
Off |
Off |
Off |
Off |
On | |
|
FFFFF |
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. SW1/5 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/5=262144, SW1/4=131072, SW3/10=65536, SW1/2=32768, SW1/1=16384. Turn off the switches and add the values of the switches to 540671 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 |