AST RESEARCH, INC.
FOUR PORT
Card Type | Serial |
Chipset | Unidentified |
I/O Options | Serial ports (4) |
Data Bus | 8-bit ISA |
Card Size | Full height, half length |
CONNECTIONS | |
Function | Label |
Serial ports via DB-37 port | CN1 |
Note:Standard DB-25 serial ports are provided on an included adapter cable. |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | Interrupt sharing disabled | SW3/3 | On |
Interrupt sharing enabled | SW3/3 | Off | |
» | Factory configured - do not alter | SW3/4 | Off |
INTERRUPT SELECTION | |||||||
Setting | SW1/1 | SW1/2 | SW1/3 | SW2/1 | SW2/2 | SW2/3 | |
2 | On | Off | Off | Off | Off | Off | |
3 | Off | On | Off | Off | Off | Off | |
» | 4 | Off | Off | On | Off | Off | Off |
5 | Off | Off | Off | On | Off | Off | |
6 | Off | Off | Off | Off | On | Off | |
7 | Off | Off | Off | Off | Off | On |
ADDRESS SELECTION | ||||||
Port 1 | Port 2 | Port 3 | Port 4 | Control | SW3/1 | SW3/2 |
1A0h | 1A8h | 1B0h | 1B8h | 1BFh | Off | Off |
2A0h | 2A8h | 2B0h | 2B8h | 2BFh | Off | On |
3F8h (COM1:) | 2F8h (COM2:) | 1B0h | 1B8h | 1BFh | On | Off |
3F8h (COM1:) | 2F8h (COM2:) | 2B0h | 2B8h | 2BFh | On | On |