UNIDENTIFIED
RS-232 DUAL I/O SHORT CARD
| 
 Card Type  | 
 Serial controller  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 I/O Options  | 
 Serial ports (2)  | 
| 
 Hard Drives supported  | 
 None  | 
| 
 Floppy drives supported  | 
 None  | 
| 
 Data Bus  | 
 8-bit ISA  | 
| 
 Card Size  | 
 Half-length  | 
| 
 CONNECTIONS  | |||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | 
| 
 Serial Port 1  | 
 CN1  | 
 Serial Port 2  | 
 CN2  | 
| 
 SERIAL PORTS CONFIGURATION  | ||||||
| 
 Setting  | 
 SW1/1  | 
 SW1/2  | 
 SW1/3  | 
 SW1/4  | 
 SW1/5  | |
| » | 
 Port 1=COM2 Port 2=COM1  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | 
| 
 Port 1=COM1 Port 2=disabled  | 
 On  | 
 Off  | 
 Off  | 
 Off  | 
 On  | |
| 
 Port 1=COM2 Port 2=disabled  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | |
| 
 Port 1=COM1 Port 2=COM2  | 
 On  | 
 On  | 
 Off  | 
 Off  | 
 On  | |
| 
 Port 1=COM3 Port 2=COM4  | 
 Off  | 
 Off  | 
 On  | 
 On  | 
 Off  | |
| 
 SERIAL PORTS CONFIGURATION (CON’T)  | ||||||
| 
 Setting  | 
 SW1/6  | 
 SW1/7  | 
 SW1/8  | 
 SW1/9  | 
 SW1/10  | |
| » | 
 Port 1=COM2 Port 2=COM1  | 
 On  | 
 On  | 
 Off  | 
 On  | 
 On  | 
| 
 Port 1=COM1 Port 2=disabled  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | |
| 
 Port 1=COM2 Port 2=disabled  | 
 On  | 
 Off  | 
 Off  | 
 On  | 
 Off  | |
| 
 Port 1=COM1 Port 2=COM2  | 
 Off  | 
 Off  | 
 On  | 
 Off  | 
 Off  | |
| 
 Port 1=COM3 Port 2=COM4  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | 
 Off  | |
| 
 SERIAL PORT 1 INTERRUPT SELECTION  | ||
| 
 IRQ  | 
 SW1/5  | 
 SW1/6  | 
| 
 IRQ4  | 
 On  | 
 Off  | 
| 
 IRQ3  | 
 Off  | 
 On  | 
| 
 SERIAL PORT 2 INTERRUPT SELECTION  | ||
| 
 IRQ  | 
 SW1/7  | 
 SW1/8  | 
| 
 IRQ3  | 
 Off  | 
 On  | 
| 
 IRQ4  | 
 On  | 
 Off  | 
| 
 MISCELLANEOUS TECHNICAL NOTES  | 
| 
 If the computer already has serial ports installed the default settings will not work.  |