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 |