Multi-tech systems, inc.
isi551pc
|
Card Type |
Serial interface |
|
Chip Set |
Unidentified |
|
Maximum Onboard Memory |
Unidentified |
|
I/O Options |
Serial port |
|
Data Bus |
16-bit ISA (EISA also available) |
|
CONNECTIONS | |
|
Purpose |
Location |
|
Serial port 1 |
J1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Label |
Location | ||
|
Factory configured do not alter |
SW1/8 |
On | |
|
PORT 1 ADDRESS SELECTION | |||||
|
IRQ |
JP1/ Pins 1 & 2 |
JP1/ Pins 3 & 4 |
JP1/ Pins 5 & 6 |
JP1/ Pins 7 & 8 |
JP1/ Pins 9 & 10 |
|
2 |
Closed |
Open |
Open |
Open |
Open |
|
3 |
Open |
Closed |
Open |
Open |
Open |
|
4 |
Open |
Open |
Closed |
Open |
Open |
|
5 |
Open |
Open |
Open |
Closed |
Open |
|
7 |
Open |
Open |
Open |
Open |
Closed |
|
10 |
Open |
Open |
Open |
Open |
Open |
|
11 |
Open |
Open |
Open |
Open |
Open |
|
12 |
Open |
Open |
Open |
Open |
Open |
|
15 |
Open |
Open |
Open |
Open |
Open |
|
PORT 1 ADDRESS SELECTION (CONTINUED) | ||||
|
IRQ |
JP1/ Pins 11 & 12 |
JP1/ Pins 13 & 14 |
JP1/ Pins 15 & 16 |
JP1/ Pins 17 & 18 |
|
2 |
Open |
Open |
Open |
Open |
|
3 |
Open |
Open |
Open |
Open |
|
4 |
Open |
Open |
Open |
Open |
|
5 |
Open |
Open |
Open |
Open |
|
7 |
Open |
Open |
Open |
Open |
|
10 |
Closed |
Open |
Open |
Open |
|
11 |
Open |
Closed |
Open |
Open |
|
12 |
Open |
Open |
Closed |
Open |
|
15 |
Open |
Open |
Open |
Closed |
|
SERIAL PORT ADDRESS SELECT | ||||||||
|
Setting |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 |
SW1/7 | |
|
100h |
On |
On |
On |
On |
On |
Off |
On | |
|
108h |
Off |
On |
On |
On |
On |
Off |
On | |
|
110h |
On |
Off |
On |
On |
On |
Off |
On | |
|
118h |
Off |
Off |
On |
On |
On |
Off |
On | |
|
120h |
On |
On |
Off |
On |
On |
Off |
On | |
|
2E8h (COM 4:) |
Off |
On |
Off |
Off |
Off |
On |
Off | |
|
2F8h (COM 2:) |
Off |
Off |
Off |
Off |
Off |
On |
Off | |
|
3D8h |
Off |
Off |
On |
Off |
Off |
Off |
Off | |
|
3E0h |
On |
On |
Off |
Off |
Off |
Off |
Off | |
|
3E8h (COM 3:) |
Off |
On |
Off |
Off |
Off |
Off |
Off | |
|
3F0h |
On |
Off |
Off |
Off |
Off |
Off |
Off | |
|
3F8h (COM 1:) |
Off |
Off |
Off |
Off |
Off |
Off |
Off | |
|
Note: A total of 752 memory base address settings are available. The switches are a binary representation of the decimal addresses. Switch 1 is the Least Significant Bit and switch 7 is the Most Significant Bit. The switches have the following decimal values: switch 1=8, 2=16, 3=32, 4=64, 5=128, 6=256, 7=512. Add the values of the on switches to obtain the correct memory address. (Off=1, On=0) | ||||||||
|
MISCELLANEOUS TECHNICAL NOTES |
|
Orientation of SW1 may vary in different revisions. |