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# ATTACHMATE CORPORATION
ASYNCHRONOUS SNA ADAPTER
Card Type Serial card
Chip Set Unidentified
Data Bus 8-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+